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// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file tests the spec builder syntax.
#include "gmock/gmock-spec-builders.h"
#include <memory>
#include <ostream> // NOLINT
#include <sstream>
#include <string>
#include "gmock/gmock.h"
#include "gmock/internal/gmock-port.h"
#include "gtest/gtest.h"
#include "gtest/gtest-spi.h"
#include "gtest/internal/gtest-port.h"
namespace testing {
namespace internal {
// Helper class for testing the Expectation class template.
class ExpectationTester {
public:
// Sets the call count of the given expectation to the given number.
void SetCallCount(int n, ExpectationBase* exp) {
exp->call_count_ = n;
}
};
} // namespace internal
} // namespace testing
namespace {
using testing::_;
using testing::AnyNumber;
using testing::AtLeast;
using testing::AtMost;
using testing::Between;
using testing::Cardinality;
using testing::CardinalityInterface;
using testing::Const;
using testing::ContainsRegex;
using testing::DoAll;
using testing::DoDefault;
using testing::Eq;
using testing::Expectation;
using testing::ExpectationSet;
using testing::GMOCK_FLAG(verbose);
using testing::Gt;
using testing::IgnoreResult;
using testing::InSequence;
using testing::Invoke;
using testing::InvokeWithoutArgs;
using testing::IsNotSubstring;
using testing::IsSubstring;
using testing::Lt;
using testing::Message;
using testing::Mock;
using testing::NaggyMock;
using testing::Ne;
using testing::Return;
using testing::SaveArg;
using testing::Sequence;
using testing::SetArgPointee;
using testing::internal::ExpectationTester;
using testing::internal::FormatFileLocation;
using testing::internal::kAllow;
using testing::internal::kErrorVerbosity;
using testing::internal::kFail;
using testing::internal::kInfoVerbosity;
using testing::internal::kWarn;
using testing::internal::kWarningVerbosity;
#if GTEST_HAS_STREAM_REDIRECTION
using testing::HasSubstr;
using testing::internal::CaptureStdout;
using testing::internal::GetCapturedStdout;
#endif
class Incomplete;
class MockIncomplete {
public:
// This line verifies that a mock method can take a by-reference
// argument of an incomplete type.
MOCK_METHOD1(ByRefFunc, void(const Incomplete& x));
};
// Tells Google Mock how to print a value of type Incomplete.
void PrintTo(const Incomplete& x, ::std::ostream* os);
TEST(MockMethodTest, CanInstantiateWithIncompleteArgType) {
// Even though this mock class contains a mock method that takes
// by-reference an argument whose type is incomplete, we can still
// use the mock, as long as Google Mock knows how to print the
// argument.
MockIncomplete incomplete;
EXPECT_CALL(incomplete, ByRefFunc(_))
.Times(AnyNumber());
}
// The definition of the printer for the argument type doesn't have to
// be visible where the mock is used.
void PrintTo(const Incomplete& /* x */, ::std::ostream* os) {
*os << "incomplete";
}
class Result {};
// A type that's not default constructible.
class NonDefaultConstructible {
public:
explicit NonDefaultConstructible(int /* dummy */) {}
};
class MockA {
public:
MockA() {}
MOCK_METHOD1(DoA, void(int n));
MOCK_METHOD1(ReturnResult, Result(int n));
MOCK_METHOD0(ReturnNonDefaultConstructible, NonDefaultConstructible());
MOCK_METHOD2(Binary, bool(int x, int y));
MOCK_METHOD2(ReturnInt, int(int x, int y));
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(MockA);
};
class MockB {
public:
MockB() {}
MOCK_CONST_METHOD0(DoB, int()); // NOLINT
MOCK_METHOD1(DoB, int(int n)); // NOLINT
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
};
class ReferenceHoldingMock {
public:
ReferenceHoldingMock() {}
MOCK_METHOD1(AcceptReference, void(std::shared_ptr<MockA>*));
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(ReferenceHoldingMock);
};
// Tests that EXPECT_CALL and ON_CALL compile in a presence of macro
// redefining a mock method name. This could happen, for example, when
// the tested code #includes Win32 API headers which define many APIs
// as macros, e.g. #define TextOut TextOutW.
#define Method MethodW
class CC {
public:
virtual ~CC() {}
virtual int Method() = 0;
};
class MockCC : public CC {
public:
MockCC() {}
MOCK_METHOD0(Method, int());
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(MockCC);
};
// Tests that a method with expanded name compiles.
TEST(OnCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) {
MockCC cc;
ON_CALL(cc, Method());
}
// Tests that the method with expanded name not only compiles but runs
// and returns a correct value, too.
TEST(OnCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) {
MockCC cc;
ON_CALL(cc, Method()).WillByDefault(Return(42));
EXPECT_EQ(42, cc.Method());
}
// Tests that a method with expanded name compiles.
TEST(ExpectCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) {
MockCC cc;
EXPECT_CALL(cc, Method());
cc.Method();
}
// Tests that it works, too.
TEST(ExpectCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) {
MockCC cc;
EXPECT_CALL(cc, Method()).WillOnce(Return(42));
EXPECT_EQ(42, cc.Method());
}
#undef Method // Done with macro redefinition tests.
// Tests that ON_CALL evaluates its arguments exactly once as promised
// by Google Mock.
TEST(OnCallSyntaxTest, EvaluatesFirstArgumentOnce) {
MockA a;
MockA* pa = &a;
ON_CALL(*pa++, DoA(_));
EXPECT_EQ(&a + 1, pa);
}
TEST(OnCallSyntaxTest, EvaluatesSecondArgumentOnce) {
MockA a;
int n = 0;
ON_CALL(a, DoA(n++));
EXPECT_EQ(1, n);
}
// Tests that the syntax of ON_CALL() is enforced at run time.
TEST(OnCallSyntaxTest, WithIsOptional) {
MockA a;
ON_CALL(a, DoA(5))
.WillByDefault(Return());
ON_CALL(a, DoA(_))
.With(_)
.WillByDefault(Return());
}
TEST(OnCallSyntaxTest, WithCanAppearAtMostOnce) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
ON_CALL(a, ReturnResult(_))
.With(_)
.With(_)
.WillByDefault(Return(Result()));
}, ".With() cannot appear more than once in an ON_CALL()");
}
TEST(OnCallSyntaxTest, WillByDefaultIsMandatory) {
MockA a;
EXPECT_DEATH_IF_SUPPORTED({
ON_CALL(a, DoA(5));
a.DoA(5);
}, "");
}
TEST(OnCallSyntaxTest, WillByDefaultCanAppearAtMostOnce) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
ON_CALL(a, DoA(5))
.WillByDefault(Return())
.WillByDefault(Return());
}, ".WillByDefault() must appear exactly once in an ON_CALL()");
}
// Tests that EXPECT_CALL evaluates its arguments exactly once as
// promised by Google Mock.
TEST(ExpectCallSyntaxTest, EvaluatesFirstArgumentOnce) {
MockA a;
MockA* pa = &a;
EXPECT_CALL(*pa++, DoA(_));
a.DoA(0);
EXPECT_EQ(&a + 1, pa);
}
TEST(ExpectCallSyntaxTest, EvaluatesSecondArgumentOnce) {
MockA a;
int n = 0;
EXPECT_CALL(a, DoA(n++));
a.DoA(0);
EXPECT_EQ(1, n);
}
// Tests that the syntax of EXPECT_CALL() is enforced at run time.
TEST(ExpectCallSyntaxTest, WithIsOptional) {
MockA a;
EXPECT_CALL(a, DoA(5))
.Times(0);
EXPECT_CALL(a, DoA(6))
.With(_)
.Times(0);
}
TEST(ExpectCallSyntaxTest, WithCanAppearAtMostOnce) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(6))
.With(_)
.With(_);
}, ".With() cannot appear more than once in an EXPECT_CALL()");
a.DoA(6);
}
TEST(ExpectCallSyntaxTest, WithMustBeFirstClause) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.Times(1)
.With(_);
}, ".With() must be the first clause in an EXPECT_CALL()");
a.DoA(1);
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(2))
.WillOnce(Return())
.With(_);
}, ".With() must be the first clause in an EXPECT_CALL()");
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, TimesCanBeInferred) {
MockA a;
EXPECT_CALL(a, DoA(1))
.WillOnce(Return());
EXPECT_CALL(a, DoA(2))
.WillOnce(Return())
.WillRepeatedly(Return());
a.DoA(1);
a.DoA(2);
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, TimesCanAppearAtMostOnce) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.Times(1)
.Times(2);
}, ".Times() cannot appear more than once in an EXPECT_CALL()");
a.DoA(1);
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, TimesMustBeBeforeInSequence) {
MockA a;
Sequence s;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.InSequence(s)
.Times(1);
}, ".Times() cannot appear after ");
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, InSequenceIsOptional) {
MockA a;
Sequence s;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(2))
.InSequence(s);
a.DoA(1);
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, InSequenceCanAppearMultipleTimes) {
MockA a;
Sequence s1, s2;
EXPECT_CALL(a, DoA(1))
.InSequence(s1, s2)
.InSequence(s1);
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeAfter) {
MockA a;
Sequence s;
Expectation e = EXPECT_CALL(a, DoA(1))
.Times(AnyNumber());
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(2))
.After(e)
.InSequence(s);
}, ".InSequence() cannot appear after ");
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeWillOnce) {
MockA a;
Sequence s;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.WillOnce(Return())
.InSequence(s);
}, ".InSequence() cannot appear after ");
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, AfterMustBeBeforeWillOnce) {
MockA a;
Expectation e = EXPECT_CALL(a, DoA(1));
EXPECT_NONFATAL_FAILURE({
EXPECT_CALL(a, DoA(2))
.WillOnce(Return())
.After(e);
}, ".After() cannot appear after ");
a.DoA(1);
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, WillIsOptional) {
MockA a;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(2))
.WillOnce(Return());
a.DoA(1);
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, WillCanAppearMultipleTimes) {
MockA a;
EXPECT_CALL(a, DoA(1))
.Times(AnyNumber())
.WillOnce(Return())
.WillOnce(Return())
.WillOnce(Return());
}
TEST(ExpectCallSyntaxTest, WillMustBeBeforeWillRepeatedly) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.WillRepeatedly(Return())
.WillOnce(Return());
}, ".WillOnce() cannot appear after ");
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, WillRepeatedlyIsOptional) {
MockA a;
EXPECT_CALL(a, DoA(1))
.WillOnce(Return());
EXPECT_CALL(a, DoA(2))
.WillOnce(Return())
.WillRepeatedly(Return());
a.DoA(1);
a.DoA(2);
a.DoA(2);
}
TEST(ExpectCallSyntaxTest, WillRepeatedlyCannotAppearMultipleTimes) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.WillRepeatedly(Return())
.WillRepeatedly(Return());
}, ".WillRepeatedly() cannot appear more than once in an "
"EXPECT_CALL()");
}
TEST(ExpectCallSyntaxTest, WillRepeatedlyMustBeBeforeRetiresOnSaturation) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.RetiresOnSaturation()
.WillRepeatedly(Return());
}, ".WillRepeatedly() cannot appear after ");
}
TEST(ExpectCallSyntaxTest, RetiresOnSaturationIsOptional) {
MockA a;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(1))
.RetiresOnSaturation();
a.DoA(1);
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, RetiresOnSaturationCannotAppearMultipleTimes) {
MockA a;
EXPECT_NONFATAL_FAILURE({ // NOLINT
EXPECT_CALL(a, DoA(1))
.RetiresOnSaturation()
.RetiresOnSaturation();
}, ".RetiresOnSaturation() cannot appear more than once");
a.DoA(1);
}
TEST(ExpectCallSyntaxTest, DefaultCardinalityIsOnce) {
{
MockA a;
EXPECT_CALL(a, DoA(1));
a.DoA(1);
}
EXPECT_NONFATAL_FAILURE({ // NOLINT
MockA a;
EXPECT_CALL(a, DoA(1));
}, "to be called once");
EXPECT_NONFATAL_FAILURE({ // NOLINT
MockA a;
EXPECT_CALL(a, DoA(1));
a.DoA(1);
a.DoA(1);
}, "to be called once");
}
#if GTEST_HAS_STREAM_REDIRECTION
// Tests that Google Mock doesn't print a warning when the number of
// WillOnce() is adequate.
TEST(ExpectCallSyntaxTest, DoesNotWarnOnAdequateActionCount) {
CaptureStdout();
{
MockB b;
// It's always fine to omit WillOnce() entirely.
EXPECT_CALL(b, DoB())
.Times(0);
EXPECT_CALL(b, DoB(1))
.Times(AtMost(1));
EXPECT_CALL(b, DoB(2))
.Times(1)
.WillRepeatedly(Return(1));
// It's fine for the number of WillOnce()s to equal the upper bound.
EXPECT_CALL(b, DoB(3))
.Times(Between(1, 2))
.WillOnce(Return(1))
.WillOnce(Return(2));
// It's fine for the number of WillOnce()s to be smaller than the
// upper bound when there is a WillRepeatedly().
EXPECT_CALL(b, DoB(4))
.Times(AtMost(3))
.WillOnce(Return(1))
.WillRepeatedly(Return(2));
// Satisfies the above expectations.
b.DoB(2);
b.DoB(3);
}
EXPECT_STREQ("", GetCapturedStdout().c_str());
}
// Tests that Google Mock warns on having too many actions in an
// expectation compared to its cardinality.
TEST(ExpectCallSyntaxTest, WarnsOnTooManyActions) {
CaptureStdout();
{
MockB b;
// Warns when the number of WillOnce()s is larger than the upper bound.
EXPECT_CALL(b, DoB())
.Times(0)
.WillOnce(Return(1)); // #1
EXPECT_CALL(b, DoB())
.Times(AtMost(1))
.WillOnce(Return(1))
.WillOnce(Return(2)); // #2
EXPECT_CALL(b, DoB(1))
.Times(1)
.WillOnce(Return(1))
.WillOnce(Return(2))
.RetiresOnSaturation(); // #3
// Warns when the number of WillOnce()s equals the upper bound and
// there is a WillRepeatedly().
EXPECT_CALL(b, DoB())
.Times(0)
.WillRepeatedly(Return(1)); // #4
EXPECT_CALL(b, DoB(2))
.Times(1)
.WillOnce(Return(1))
.WillRepeatedly(Return(2)); // #5
// Satisfies the above expectations.
b.DoB(1);
b.DoB(2);
}
const std::string output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too many actions specified in EXPECT_CALL(b, DoB())...\n"
"Expected to be never called, but has 1 WillOnce().",
output); // #1
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too many actions specified in EXPECT_CALL(b, DoB())...\n"
"Expected to be called at most once, "
"but has 2 WillOnce()s.",
output); // #2
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too many actions specified in EXPECT_CALL(b, DoB(1))...\n"
"Expected to be called once, but has 2 WillOnce()s.",
output); // #3
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too many actions specified in EXPECT_CALL(b, DoB())...\n"
"Expected to be never called, but has 0 WillOnce()s "
"and a WillRepeatedly().",
output); // #4
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too many actions specified in EXPECT_CALL(b, DoB(2))...\n"
"Expected to be called once, but has 1 WillOnce() "
"and a WillRepeatedly().",
output); // #5
}
// Tests that Google Mock warns on having too few actions in an
// expectation compared to its cardinality.
TEST(ExpectCallSyntaxTest, WarnsOnTooFewActions) {
MockB b;
EXPECT_CALL(b, DoB())
.Times(Between(2, 3))
.WillOnce(Return(1));
CaptureStdout();
b.DoB();
const std::string output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(
IsSubstring,
"Too few actions specified in EXPECT_CALL(b, DoB())...\n"
"Expected to be called between 2 and 3 times, "
"but has only 1 WillOnce().",
output);
b.DoB();
}
TEST(ExpectCallSyntaxTest, WarningIsErrorWithFlag) {
int original_behavior = testing::GMOCK_FLAG(default_mock_behavior);
testing::GMOCK_FLAG(default_mock_behavior) = kAllow;
CaptureStdout();
{
MockA a;
a.DoA(0);
}
std::string output = GetCapturedStdout();
EXPECT_TRUE(output.empty()) << output;
testing::GMOCK_FLAG(default_mock_behavior) = kWarn;
CaptureStdout();
{
MockA a;
a.DoA(0);
}
std::string warning_output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
warning_output);
testing::GMOCK_FLAG(default_mock_behavior) = kFail;
EXPECT_NONFATAL_FAILURE({
MockA a;
a.DoA(0);
}, "Uninteresting mock function call");
// Out of bounds values are converted to kWarn
testing::GMOCK_FLAG(default_mock_behavior) = -1;
CaptureStdout();
{
MockA a;
a.DoA(0);
}
warning_output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
warning_output);
testing::GMOCK_FLAG(default_mock_behavior) = 3;
CaptureStdout();
{
MockA a;
a.DoA(0);
}
warning_output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
warning_output);
testing::GMOCK_FLAG(default_mock_behavior) = original_behavior;
}
#endif // GTEST_HAS_STREAM_REDIRECTION
// Tests the semantics of ON_CALL().
// Tests that the built-in default action is taken when no ON_CALL()
// is specified.
TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCall) {
MockB b;
EXPECT_CALL(b, DoB());
EXPECT_EQ(0, b.DoB());
}
// Tests that the built-in default action is taken when no ON_CALL()
// matches the invocation.
TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCallMatches) {
MockB b;
ON_CALL(b, DoB(1))
.WillByDefault(Return(1));
EXPECT_CALL(b, DoB(_));
EXPECT_EQ(0, b.DoB(2));
}
// Tests that the last matching ON_CALL() action is taken.
TEST(OnCallTest, PicksLastMatchingOnCall) {
MockB b;
ON_CALL(b, DoB(_))
.WillByDefault(Return(3));
ON_CALL(b, DoB(2))
.WillByDefault(Return(2));
ON_CALL(b, DoB(1))
.WillByDefault(Return(1));
EXPECT_CALL(b, DoB(_));
EXPECT_EQ(2, b.DoB(2));
}
// Tests the semantics of EXPECT_CALL().
// Tests that any call is allowed when no EXPECT_CALL() is specified.
TEST(ExpectCallTest, AllowsAnyCallWhenNoSpec) {
MockB b;
EXPECT_CALL(b, DoB());
// There is no expectation on DoB(int).
b.DoB();
// DoB(int) can be called any number of times.
b.DoB(1);
b.DoB(2);
}
// Tests that the last matching EXPECT_CALL() fires.
TEST(ExpectCallTest, PicksLastMatchingExpectCall) {
MockB b;
EXPECT_CALL(b, DoB(_))
.WillRepeatedly(Return(2));
EXPECT_CALL(b, DoB(1))
.WillRepeatedly(Return(1));
EXPECT_EQ(1, b.DoB(1));
}
// Tests lower-bound violation.
TEST(ExpectCallTest, CatchesTooFewCalls) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
MockB b;
EXPECT_CALL(b, DoB(5))
.Times(AtLeast(2));
b.DoB(5);
}, "Actual function call count doesn't match EXPECT_CALL(b, DoB(5))...\n"
" Expected: to be called at least twice\n"
" Actual: called once - unsatisfied and active");
}
// Tests that the cardinality can be inferred when no Times(...) is
// specified.
TEST(ExpectCallTest, InfersCardinalityWhenThereIsNoWillRepeatedly) {
{
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillOnce(Return(2));
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
}
EXPECT_NONFATAL_FAILURE({ // NOLINT
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillOnce(Return(2));
EXPECT_EQ(1, b.DoB());
}, "to be called twice");
{ // NOLINT
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillOnce(Return(2));
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
EXPECT_NONFATAL_FAILURE(b.DoB(), "to be called twice");
}
}
TEST(ExpectCallTest, InfersCardinality1WhenThereIsWillRepeatedly) {
{
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillRepeatedly(Return(2));
EXPECT_EQ(1, b.DoB());
}
{ // NOLINT
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillRepeatedly(Return(2));
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
EXPECT_EQ(2, b.DoB());
}
EXPECT_NONFATAL_FAILURE({ // NOLINT
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillRepeatedly(Return(2));
}, "to be called at least once");
}
// Tests that the n-th action is taken for the n-th matching
// invocation.
TEST(ExpectCallTest, NthMatchTakesNthAction) {
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillOnce(Return(2))
.WillOnce(Return(3));
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
EXPECT_EQ(3, b.DoB());
}
// Tests that the WillRepeatedly() action is taken when the WillOnce(...)
// list is exhausted.
TEST(ExpectCallTest, TakesRepeatedActionWhenWillListIsExhausted) {
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1))
.WillRepeatedly(Return(2));
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
EXPECT_EQ(2, b.DoB());
}
#if GTEST_HAS_STREAM_REDIRECTION
// Tests that the default action is taken when the WillOnce(...) list is
// exhausted and there is no WillRepeatedly().
TEST(ExpectCallTest, TakesDefaultActionWhenWillListIsExhausted) {
MockB b;
EXPECT_CALL(b, DoB(_))
.Times(1);
EXPECT_CALL(b, DoB())
.Times(AnyNumber())
.WillOnce(Return(1))
.WillOnce(Return(2));
CaptureStdout();
EXPECT_EQ(0, b.DoB(1)); // Shouldn't generate a warning as the
// expectation has no action clause at all.
EXPECT_EQ(1, b.DoB());
EXPECT_EQ(2, b.DoB());
const std::string output1 = GetCapturedStdout();
EXPECT_STREQ("", output1.c_str());
CaptureStdout();
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB());
const std::string output2 = GetCapturedStdout();
EXPECT_THAT(output2.c_str(),
HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n"
"Called 3 times, but only 2 WillOnce()s are specified"
" - returning default value."));
EXPECT_THAT(output2.c_str(),
HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n"
"Called 4 times, but only 2 WillOnce()s are specified"
" - returning default value."));
}
TEST(FunctionMockerMessageTest, ReportsExpectCallLocationForExhausedActions) {
MockB b;
std::string expect_call_location = FormatFileLocation(__FILE__, __LINE__ + 1);
EXPECT_CALL(b, DoB()).Times(AnyNumber()).WillOnce(Return(1));
EXPECT_EQ(1, b.DoB());
CaptureStdout();
EXPECT_EQ(0, b.DoB());
const std::string output = GetCapturedStdout();
// The warning message should contain the call location.
EXPECT_PRED_FORMAT2(IsSubstring, expect_call_location, output);
}
TEST(FunctionMockerMessageTest,
ReportsDefaultActionLocationOfUninterestingCallsForNaggyMock) {
std::string on_call_location;
CaptureStdout();
{
NaggyMock<MockB> b;
on_call_location = FormatFileLocation(__FILE__, __LINE__ + 1);
ON_CALL(b, DoB(_)).WillByDefault(Return(0));
b.DoB(0);
}
EXPECT_PRED_FORMAT2(IsSubstring, on_call_location, GetCapturedStdout());
}
#endif // GTEST_HAS_STREAM_REDIRECTION
// Tests that an uninteresting call performs the default action.
TEST(UninterestingCallTest, DoesDefaultAction) {
// When there is an ON_CALL() statement, the action specified by it
// should be taken.
MockA a;
ON_CALL(a, Binary(_, _))
.WillByDefault(Return(true));
EXPECT_TRUE(a.Binary(1, 2));
// When there is no ON_CALL(), the default value for the return type
// should be returned.
MockB b;
EXPECT_EQ(0, b.DoB());
}
// Tests that an unexpected call performs the default action.
TEST(UnexpectedCallTest, DoesDefaultAction) {
// When there is an ON_CALL() statement, the action specified by it
// should be taken.
MockA a;
ON_CALL(a, Binary(_, _))
.WillByDefault(Return(true));
EXPECT_CALL(a, Binary(0, 0));
a.Binary(0, 0);
bool result = false;
EXPECT_NONFATAL_FAILURE(result = a.Binary(1, 2),
"Unexpected mock function call");
EXPECT_TRUE(result);
// When there is no ON_CALL(), the default value for the return type
// should be returned.
MockB b;
EXPECT_CALL(b, DoB(0))
.Times(0);
int n = -1;
EXPECT_NONFATAL_FAILURE(n = b.DoB(1),
"Unexpected mock function call");
EXPECT_EQ(0, n);
}
// Tests that when an unexpected void function generates the right
// failure message.
TEST(UnexpectedCallTest, GeneratesFailureForVoidFunction) {
// First, tests the message when there is only one EXPECT_CALL().
MockA a1;
EXPECT_CALL(a1, DoA(1));
a1.DoA(1);
// Ideally we should match the failure message against a regex, but
// EXPECT_NONFATAL_FAILURE doesn't support that, so we test for
// multiple sub-strings instead.
EXPECT_NONFATAL_FAILURE(
a1.DoA(9),
"Unexpected mock function call - returning directly.\n"
" Function call: DoA(9)\n"
"Google Mock tried the following 1 expectation, but it didn't match:");
EXPECT_NONFATAL_FAILURE(
a1.DoA(9),
" Expected arg #0: is equal to 1\n"
" Actual: 9\n"
" Expected: to be called once\n"
" Actual: called once - saturated and active");
// Next, tests the message when there are more than one EXPECT_CALL().
MockA a2;
EXPECT_CALL(a2, DoA(1));
EXPECT_CALL(a2, DoA(3));
a2.DoA(1);
EXPECT_NONFATAL_FAILURE(
a2.DoA(2),
"Unexpected mock function call - returning directly.\n"
" Function call: DoA(2)\n"
"Google Mock tried the following 2 expectations, but none matched:");
EXPECT_NONFATAL_FAILURE(
a2.DoA(2),
"tried expectation #0: EXPECT_CALL(a2, DoA(1))...\n"
" Expected arg #0: is equal to 1\n"
" Actual: 2\n"
" Expected: to be called once\n"
" Actual: called once - saturated and active");
EXPECT_NONFATAL_FAILURE(
a2.DoA(2),
"tried expectation #1: EXPECT_CALL(a2, DoA(3))...\n"
" Expected arg #0: is equal to 3\n"
" Actual: 2\n"
" Expected: to be called once\n"
" Actual: never called - unsatisfied and active");
a2.DoA(3);
}
// Tests that an unexpected non-void function generates the right
// failure message.
TEST(UnexpectedCallTest, GeneartesFailureForNonVoidFunction) {
MockB b1;
EXPECT_CALL(b1, DoB(1));
b1.DoB(1);
EXPECT_NONFATAL_FAILURE(
b1.DoB(2),
"Unexpected mock function call - returning default value.\n"
" Function call: DoB(2)\n"
" Returns: 0\n"
"Google Mock tried the following 1 expectation, but it didn't match:");
EXPECT_NONFATAL_FAILURE(
b1.DoB(2),
" Expected arg #0: is equal to 1\n"
" Actual: 2\n"
" Expected: to be called once\n"
" Actual: called once - saturated and active");
}
// Tests that Google Mock explains that an retired expectation doesn't
// match the call.
TEST(UnexpectedCallTest, RetiredExpectation) {
MockB b;
EXPECT_CALL(b, DoB(1))
.RetiresOnSaturation();
b.DoB(1);
EXPECT_NONFATAL_FAILURE(
b.DoB(1),
" Expected: the expectation is active\n"
" Actual: it is retired");
}
// Tests that Google Mock explains that an expectation that doesn't
// match the arguments doesn't match the call.
TEST(UnexpectedCallTest, UnmatchedArguments) {
MockB b;
EXPECT_CALL(b, DoB(1));
EXPECT_NONFATAL_FAILURE(
b.DoB(2),
" Expected arg #0: is equal to 1\n"
" Actual: 2\n");
b.DoB(1);
}
// Tests that Google Mock explains that an expectation with
// unsatisfied pre-requisites doesn't match the call.
TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
Sequence s1, s2;
MockB b;
EXPECT_CALL(b, DoB(1))
.InSequence(s1);
EXPECT_CALL(b, DoB(2))
.Times(AnyNumber())
.InSequence(s1);
EXPECT_CALL(b, DoB(3))
.InSequence(s2);
EXPECT_CALL(b, DoB(4))
.InSequence(s1, s2);
::testing::TestPartResultArray failures;
{
::testing::ScopedFakeTestPartResultReporter reporter(&failures);
b.DoB(4);
// Now 'failures' contains the Google Test failures generated by
// the above statement.
}
// There should be one non-fatal failure.
ASSERT_EQ(1, failures.size());
const ::testing::TestPartResult& r = failures.GetTestPartResult(0);
EXPECT_EQ(::testing::TestPartResult::kNonFatalFailure, r.type());
// Verifies that the failure message contains the two unsatisfied
// pre-requisites but not the satisfied one.
#if GTEST_USES_PCRE
EXPECT_THAT(r.message(), ContainsRegex(
// PCRE has trouble using (.|\n) to match any character, but
// supports the (?s) prefix for using . to match any character.
"(?s)the following immediate pre-requisites are not satisfied:\n"
".*: pre-requisite #0\n"
".*: pre-requisite #1"));
#elif GTEST_USES_POSIX_RE
EXPECT_THAT(r.message(), ContainsRegex(
// POSIX RE doesn't understand the (?s) prefix, but has no trouble
// with (.|\n).
"the following immediate pre-requisites are not satisfied:\n"
"(.|\n)*: pre-requisite #0\n"
"(.|\n)*: pre-requisite #1"));
#else
// We can only use Google Test's own simple regex.
EXPECT_THAT(r.message(), ContainsRegex(
"the following immediate pre-requisites are not satisfied:"));
EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #0"));
EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #1"));
#endif // GTEST_USES_PCRE
b.DoB(1);
b.DoB(3);
b.DoB(4);
}
TEST(UndefinedReturnValueTest,
ReturnValueIsMandatoryWhenNotDefaultConstructible) {
MockA a;
// FIXME: We should really verify the output message,
// but we cannot yet due to that EXPECT_DEATH only captures stderr
// while Google Mock logs to stdout.
#if GTEST_HAS_EXCEPTIONS
EXPECT_ANY_THROW(a.ReturnNonDefaultConstructible());
#else
EXPECT_DEATH_IF_SUPPORTED(a.ReturnNonDefaultConstructible(), "");
#endif
}
// Tests that an excessive call (one whose arguments match the
// matchers but is called too many times) performs the default action.
TEST(ExcessiveCallTest, DoesDefaultAction) {
// When there is an ON_CALL() statement, the action specified by it
// should be taken.
MockA a;
ON_CALL(a, Binary(_, _))
.WillByDefault(Return(true));
EXPECT_CALL(a, Binary(0, 0));
a.Binary(0, 0);
bool result = false;
EXPECT_NONFATAL_FAILURE(result = a.Binary(0, 0),
"Mock function called more times than expected");
EXPECT_TRUE(result);
// When there is no ON_CALL(), the default value for the return type
// should be returned.
MockB b;
EXPECT_CALL(b, DoB(0))
.Times(0);
int n = -1;
EXPECT_NONFATAL_FAILURE(n = b.DoB(0),
"Mock function called more times than expected");
EXPECT_EQ(0, n);
}
// Tests that when a void function is called too many times,
// the failure message contains the argument values.
TEST(ExcessiveCallTest, GeneratesFailureForVoidFunction) {
MockA a;
EXPECT_CALL(a, DoA(_))
.Times(0);
EXPECT_NONFATAL_FAILURE(
a.DoA(9),
"Mock function called more times than expected - returning directly.\n"
" Function call: DoA(9)\n"
" Expected: to be never called\n"
" Actual: called once - over-saturated and active");
}
// Tests that when a non-void function is called too many times, the
// failure message contains the argument values and the return value.
TEST(ExcessiveCallTest, GeneratesFailureForNonVoidFunction) {
MockB b;
EXPECT_CALL(b, DoB(_));
b.DoB(1);
EXPECT_NONFATAL_FAILURE(
b.DoB(2),
"Mock function called more times than expected - "
"returning default value.\n"
" Function call: DoB(2)\n"
" Returns: 0\n"
" Expected: to be called once\n"
" Actual: called twice - over-saturated and active");
}
// Tests using sequences.
TEST(InSequenceTest, AllExpectationInScopeAreInSequence) {
MockA a;
{
InSequence dummy;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(2));
}
EXPECT_NONFATAL_FAILURE({ // NOLINT
a.DoA(2);
}, "Unexpected mock function call");
a.DoA(1);
a.DoA(2);
}
TEST(InSequenceTest, NestedInSequence) {
MockA a;
{
InSequence dummy;
EXPECT_CALL(a, DoA(1));
{
InSequence dummy2;
EXPECT_CALL(a, DoA(2));
EXPECT_CALL(a, DoA(3));
}
}
EXPECT_NONFATAL_FAILURE({ // NOLINT
a.DoA(1);
a.DoA(3);
}, "Unexpected mock function call");
a.DoA(2);
a.DoA(3);
}
TEST(InSequenceTest, ExpectationsOutOfScopeAreNotAffected) {
MockA a;
{
InSequence dummy;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(2));
}
EXPECT_CALL(a, DoA(3));
EXPECT_NONFATAL_FAILURE({ // NOLINT
a.DoA(2);
}, "Unexpected mock function call");
a.DoA(3);
a.DoA(1);
a.DoA(2);
}
// Tests that any order is allowed when no sequence is used.
TEST(SequenceTest, AnyOrderIsOkByDefault) {
{
MockA a;
MockB b;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(b, DoB())
.Times(AnyNumber());
a.DoA(1);
b.DoB();
}
{ // NOLINT
MockA a;
MockB b;
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(b, DoB())
.Times(AnyNumber());
b.DoB();
a.DoA(1);
}
}
// Tests that the calls must be in strict order when a complete order
// is specified.
TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo1) {
MockA a;
ON_CALL(a, ReturnResult(_))
.WillByDefault(Return(Result()));
Sequence s;
EXPECT_CALL(a, ReturnResult(1))
.InSequence(s);
EXPECT_CALL(a, ReturnResult(2))
.InSequence(s);
EXPECT_CALL(a, ReturnResult(3))
.InSequence(s);
a.ReturnResult(1);
// May only be called after a.ReturnResult(2).
EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
a.ReturnResult(2);
a.ReturnResult(3);
}
// Tests that the calls must be in strict order when a complete order
// is specified.
TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo2) {
MockA a;
ON_CALL(a, ReturnResult(_))
.WillByDefault(Return(Result()));
Sequence s;
EXPECT_CALL(a, ReturnResult(1))
.InSequence(s);
EXPECT_CALL(a, ReturnResult(2))
.InSequence(s);
// May only be called after a.ReturnResult(1).
EXPECT_NONFATAL_FAILURE(a.ReturnResult(2), "Unexpected mock function call");
a.ReturnResult(1);
a.ReturnResult(2);
}
// Tests specifying a DAG using multiple sequences.
class PartialOrderTest : public testing::Test {
protected:
PartialOrderTest() {
ON_CALL(a_, ReturnResult(_))
.WillByDefault(Return(Result()));
// Specifies this partial ordering:
//
// a.ReturnResult(1) ==>
// a.ReturnResult(2) * n ==> a.ReturnResult(3)
// b.DoB() * 2 ==>
Sequence x, y;
EXPECT_CALL(a_, ReturnResult(1))
.InSequence(x);
EXPECT_CALL(b_, DoB())
.Times(2)
.InSequence(y);
EXPECT_CALL(a_, ReturnResult(2))
.Times(AnyNumber())
.InSequence(x, y);
EXPECT_CALL(a_, ReturnResult(3))
.InSequence(x);
}
MockA a_;
MockB b_;
};
TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag1) {
a_.ReturnResult(1);
b_.DoB();
// May only be called after the second DoB().
EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
b_.DoB();
a_.ReturnResult(3);
}
TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag2) {
// May only be called after ReturnResult(1).
EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
a_.ReturnResult(1);
b_.DoB();
b_.DoB();
a_.ReturnResult(3);
}
TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag3) {
// May only be called last.
EXPECT_NONFATAL_FAILURE(a_.ReturnResult(3), "Unexpected mock function call");
a_.ReturnResult(1);
b_.DoB();
b_.DoB();
a_.ReturnResult(3);
}
TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag4) {
a_.ReturnResult(1);
b_.DoB();
b_.DoB();
a_.ReturnResult(3);
// May only be called before ReturnResult(3).
EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
}
TEST(SequenceTest, Retirement) {
MockA a;
Sequence s;
EXPECT_CALL(a, DoA(1))
.InSequence(s);
EXPECT_CALL(a, DoA(_))
.InSequence(s)
.RetiresOnSaturation();
EXPECT_CALL(a, DoA(1))
.InSequence(s);
a.DoA(1);
a.DoA(2);
a.DoA(1);
}
// Tests Expectation.
TEST(ExpectationTest, ConstrutorsWork) {
MockA a;
Expectation e1; // Default ctor.
// Ctor from various forms of EXPECT_CALL.
Expectation e2 = EXPECT_CALL(a, DoA(2));
Expectation e3 = EXPECT_CALL(a, DoA(3)).With(_);
{
Sequence s;
Expectation e4 = EXPECT_CALL(a, DoA(4)).Times(1);
Expectation e5 = EXPECT_CALL(a, DoA(5)).InSequence(s);
}
Expectation e6 = EXPECT_CALL(a, DoA(6)).After(e2);
Expectation e7 = EXPECT_CALL(a, DoA(7)).WillOnce(Return());
Expectation e8 = EXPECT_CALL(a, DoA(8)).WillRepeatedly(Return());
Expectation e9 = EXPECT_CALL(a, DoA(9)).RetiresOnSaturation();
Expectation e10 = e2; // Copy ctor.
EXPECT_THAT(e1, Ne(e2));
EXPECT_THAT(e2, Eq(e10));
a.DoA(2);
a.DoA(3);
a.DoA(4);
a.DoA(5);
a.DoA(6);
a.DoA(7);
a.DoA(8);
a.DoA(9);
}
TEST(ExpectationTest, AssignmentWorks) {
MockA a;
Expectation e1;
Expectation e2 = EXPECT_CALL(a, DoA(1));
EXPECT_THAT(e1, Ne(e2));
e1 = e2;
EXPECT_THAT(e1, Eq(e2));
a.DoA(1);
}
// Tests ExpectationSet.
TEST(ExpectationSetTest, MemberTypesAreCorrect) {
::testing::StaticAssertTypeEq<Expectation, ExpectationSet::value_type>();
}
TEST(ExpectationSetTest, ConstructorsWork) {
MockA a;
Expectation e1;
const Expectation e2;
ExpectationSet es1; // Default ctor.
ExpectationSet es2 = EXPECT_CALL(a, DoA(1)); // Ctor from EXPECT_CALL.
ExpectationSet es3 = e1; // Ctor from Expectation.
ExpectationSet es4(e1); // Ctor from Expectation; alternative syntax.
ExpectationSet es5 = e2; // Ctor from const Expectation.
ExpectationSet es6(e2); // Ctor from const Expectation; alternative syntax.
ExpectationSet es7 = es2; // Copy ctor.
EXPECT_EQ(0, es1.size());
EXPECT_EQ(1, es2.size());
EXPECT_EQ(1, es3.size());
EXPECT_EQ(1, es4.size());
EXPECT_EQ(1, es5.size());
EXPECT_EQ(1, es6.size());
EXPECT_EQ(1, es7.size());
EXPECT_THAT(es3, Ne(es2));
EXPECT_THAT(es4, Eq(es3));
EXPECT_THAT(es5, Eq(es4));
EXPECT_THAT(es6, Eq(es5));
EXPECT_THAT(es7, Eq(es2));
a.DoA(1);
}
TEST(ExpectationSetTest, AssignmentWorks) {
ExpectationSet es1;
ExpectationSet es2 = Expectation();
es1 = es2;
EXPECT_EQ(1, es1.size());
EXPECT_THAT(*(es1.begin()), Eq(Expectation()));
EXPECT_THAT(es1, Eq(es2));
}
TEST(ExpectationSetTest, InsertionWorks) {
ExpectationSet es1;
Expectation e1;
es1 += e1;
EXPECT_EQ(1, es1.size());
EXPECT_THAT(*(es1.begin()), Eq(e1));
MockA a;
Expectation e2 = EXPECT_CALL(a, DoA(1));
es1 += e2;
EXPECT_EQ(2, es1.size());
ExpectationSet::const_iterator it1 = es1.begin();
ExpectationSet::const_iterator it2 = it1;
++it2;
EXPECT_TRUE(*it1 == e1 || *it2 == e1); // e1 must be in the set.
EXPECT_TRUE(*it1 == e2 || *it2 == e2); // e2 must be in the set too.
a.DoA(1);
}
TEST(ExpectationSetTest, SizeWorks) {
ExpectationSet es;
EXPECT_EQ(0, es.size());
es += Expectation();
EXPECT_EQ(1, es.size());
MockA a;
es += EXPECT_CALL(a, DoA(1));
EXPECT_EQ(2, es.size());
a.DoA(1);
}
TEST(ExpectationSetTest, IsEnumerable) {
ExpectationSet es;
EXPECT_TRUE(es.begin() == es.end());
es += Expectation();
ExpectationSet::const_iterator it = es.begin();
EXPECT_TRUE(it != es.end());
EXPECT_THAT(*it, Eq(Expectation()));
++it;
EXPECT_TRUE(it== es.end());
}
// Tests the .After() clause.
TEST(AfterTest, SucceedsWhenPartialOrderIsSatisfied) {
MockA a;
ExpectationSet es;
es += EXPECT_CALL(a, DoA(1));
es += EXPECT_CALL(a, DoA(2));
EXPECT_CALL(a, DoA(3))
.After(es);
a.DoA(1);
a.DoA(2);
a.DoA(3);
}
TEST(AfterTest, SucceedsWhenTotalOrderIsSatisfied) {
MockA a;
MockB b;
// The following also verifies that const Expectation objects work
// too. Do not remove the const modifiers.
const Expectation e1 = EXPECT_CALL(a, DoA(1));
const Expectation e2 = EXPECT_CALL(b, DoB())
.Times(2)
.After(e1);
EXPECT_CALL(a, DoA(2)).After(e2);
a.DoA(1);
b.DoB();
b.DoB();
a.DoA(2);
}
// Calls must be in strict order when specified so using .After().
TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo1) {
MockA a;
MockB b;
// Define ordering:
// a.DoA(1) ==> b.DoB() ==> a.DoA(2)
Expectation e1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(b, DoB())
.After(e1);
EXPECT_CALL(a, DoA(2))
.After(e2);
a.DoA(1);
// May only be called after DoB().
EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call");
b.DoB();
a.DoA(2);
}
// Calls must be in strict order when specified so using .After().
TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo2) {
MockA a;
MockB b;
// Define ordering:
// a.DoA(1) ==> b.DoB() * 2 ==> a.DoA(2)
Expectation e1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(b, DoB())
.Times(2)
.After(e1);
EXPECT_CALL(a, DoA(2))
.After(e2);
a.DoA(1);
b.DoB();
// May only be called after the second DoB().
EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call");
b.DoB();
a.DoA(2);
}
// Calls must satisfy the partial order when specified so.
TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo) {
MockA a;
ON_CALL(a, ReturnResult(_))
.WillByDefault(Return(Result()));
// Define ordering:
// a.DoA(1) ==>
// a.DoA(2) ==> a.ReturnResult(3)
Expectation e = EXPECT_CALL(a, DoA(1));
const ExpectationSet es = EXPECT_CALL(a, DoA(2));
EXPECT_CALL(a, ReturnResult(3))
.After(e, es);
// May only be called last.
EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
a.DoA(2);
a.DoA(1);
a.ReturnResult(3);
}
// Calls must satisfy the partial order when specified so.
TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo2) {
MockA a;
// Define ordering:
// a.DoA(1) ==>
// a.DoA(2) ==> a.DoA(3)
Expectation e = EXPECT_CALL(a, DoA(1));
const ExpectationSet es = EXPECT_CALL(a, DoA(2));
EXPECT_CALL(a, DoA(3))
.After(e, es);
a.DoA(2);
// May only be called last.
EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call");
a.DoA(1);
a.DoA(3);
}
// .After() can be combined with .InSequence().
TEST(AfterTest, CanBeUsedWithInSequence) {
MockA a;
Sequence s;
Expectation e = EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(2)).InSequence(s);
EXPECT_CALL(a, DoA(3))
.InSequence(s)
.After(e);
a.DoA(1);
// May only be after DoA(2).
EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call");
a.DoA(2);
a.DoA(3);
}
// .After() can be called multiple times.
TEST(AfterTest, CanBeCalledManyTimes) {
MockA a;
Expectation e1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(a, DoA(2));
Expectation e3 = EXPECT_CALL(a, DoA(3));
EXPECT_CALL(a, DoA(4))
.After(e1)
.After(e2)
.After(e3);
a.DoA(3);
a.DoA(1);
a.DoA(2);
a.DoA(4);
}
// .After() accepts up to 5 arguments.
TEST(AfterTest, AcceptsUpToFiveArguments) {
MockA a;
Expectation e1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(a, DoA(2));
Expectation e3 = EXPECT_CALL(a, DoA(3));
ExpectationSet es1 = EXPECT_CALL(a, DoA(4));
ExpectationSet es2 = EXPECT_CALL(a, DoA(5));
EXPECT_CALL(a, DoA(6))
.After(e1, e2, e3, es1, es2);
a.DoA(5);
a.DoA(2);
a.DoA(4);
a.DoA(1);
a.DoA(3);
a.DoA(6);
}
// .After() allows input to contain duplicated Expectations.
TEST(AfterTest, AcceptsDuplicatedInput) {
MockA a;
ON_CALL(a, ReturnResult(_))
.WillByDefault(Return(Result()));
// Define ordering:
// DoA(1) ==>
// DoA(2) ==> ReturnResult(3)
Expectation e1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(a, DoA(2));
ExpectationSet es;
es += e1;
es += e2;
EXPECT_CALL(a, ReturnResult(3))
.After(e1, e2, es, e1);
a.DoA(1);
// May only be after DoA(2).
EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
a.DoA(2);
a.ReturnResult(3);
}
// An Expectation added to an ExpectationSet after it has been used in
// an .After() has no effect.
TEST(AfterTest, ChangesToExpectationSetHaveNoEffectAfterwards) {
MockA a;
ExpectationSet es1 = EXPECT_CALL(a, DoA(1));
Expectation e2 = EXPECT_CALL(a, DoA(2));
EXPECT_CALL(a, DoA(3))
.After(es1);
es1 += e2;
a.DoA(1);
a.DoA(3);
a.DoA(2);
}
// Tests that Google Mock correctly handles calls to mock functions
// after a mock object owning one of their pre-requisites has died.
// Tests that calls that satisfy the original spec are successful.
TEST(DeletingMockEarlyTest, Success1) {
MockB* const b1 = new MockB;
MockA* const a = new MockA;
MockB* const b2 = new MockB;
{
InSequence dummy;
EXPECT_CALL(*b1, DoB(_))
.WillOnce(Return(1));
EXPECT_CALL(*a, Binary(_, _))
.Times(AnyNumber())
.WillRepeatedly(Return(true));
EXPECT_CALL(*b2, DoB(_))
.Times(AnyNumber())
.WillRepeatedly(Return(2));
}
EXPECT_EQ(1, b1->DoB(1));
delete b1;
// a's pre-requisite has died.
EXPECT_TRUE(a->Binary(0, 1));
delete b2;
// a's successor has died.
EXPECT_TRUE(a->Binary(1, 2));
delete a;
}
// Tests that calls that satisfy the original spec are successful.
TEST(DeletingMockEarlyTest, Success2) {
MockB* const b1 = new MockB;
MockA* const a = new MockA;
MockB* const b2 = new MockB;
{
InSequence dummy;
EXPECT_CALL(*b1, DoB(_))
.WillOnce(Return(1));
EXPECT_CALL(*a, Binary(_, _))
.Times(AnyNumber());
EXPECT_CALL(*b2, DoB(_))
.Times(AnyNumber())
.WillRepeatedly(Return(2));
}
delete a; // a is trivially satisfied.
EXPECT_EQ(1, b1->DoB(1));
EXPECT_EQ(2, b2->DoB(2));
delete b1;
delete b2;
}
// Tests that it's OK to delete a mock object itself in its action.
// Suppresses warning on unreferenced formal parameter in MSVC with
// -W4.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
#endif
ACTION_P(Delete, ptr) { delete ptr; }
#ifdef _MSC_VER
# pragma warning(pop)
#endif
TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningVoid) {
MockA* const a = new MockA;
EXPECT_CALL(*a, DoA(_)).WillOnce(Delete(a));
a->DoA(42); // This will cause a to be deleted.
}
TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningValue) {
MockA* const a = new MockA;
EXPECT_CALL(*a, ReturnResult(_))
.WillOnce(DoAll(Delete(a), Return(Result())));
a->ReturnResult(42); // This will cause a to be deleted.
}
// Tests that calls that violate the original spec yield failures.
TEST(DeletingMockEarlyTest, Failure1) {
MockB* const b1 = new MockB;
MockA* const a = new MockA;
MockB* const b2 = new MockB;
{
InSequence dummy;
EXPECT_CALL(*b1, DoB(_))
.WillOnce(Return(1));
EXPECT_CALL(*a, Binary(_, _))
.Times(AnyNumber());
EXPECT_CALL(*b2, DoB(_))
.Times(AnyNumber())
.WillRepeatedly(Return(2));
}
delete a; // a is trivially satisfied.
EXPECT_NONFATAL_FAILURE({
b2->DoB(2);
}, "Unexpected mock function call");
EXPECT_EQ(1, b1->DoB(1));
delete b1;
delete b2;
}
// Tests that calls that violate the original spec yield failures.
TEST(DeletingMockEarlyTest, Failure2) {
MockB* const b1 = new MockB;
MockA* const a = new MockA;
MockB* const b2 = new MockB;
{
InSequence dummy;
EXPECT_CALL(*b1, DoB(_));
EXPECT_CALL(*a, Binary(_, _))
.Times(AnyNumber());
EXPECT_CALL(*b2, DoB(_))
.Times(AnyNumber());
}
EXPECT_NONFATAL_FAILURE(delete b1,
"Actual: never called");
EXPECT_NONFATAL_FAILURE(a->Binary(0, 1),
"Unexpected mock function call");
EXPECT_NONFATAL_FAILURE(b2->DoB(1),
"Unexpected mock function call");
delete a;
delete b2;
}
class EvenNumberCardinality : public CardinalityInterface {
public:
// Returns true if and only if call_count calls will satisfy this
// cardinality.
bool IsSatisfiedByCallCount(int call_count) const override {
return call_count % 2 == 0;
}
// Returns true if and only if call_count calls will saturate this
// cardinality.
bool IsSaturatedByCallCount(int /* call_count */) const override {
return false;
}
// Describes self to an ostream.
void DescribeTo(::std::ostream* os) const override {
*os << "called even number of times";
}
};
Cardinality EvenNumber() {
return Cardinality(new EvenNumberCardinality);
}
TEST(ExpectationBaseTest,
AllPrerequisitesAreSatisfiedWorksForNonMonotonicCardinality) {
MockA* a = new MockA;
Sequence s;
EXPECT_CALL(*a, DoA(1))
.Times(EvenNumber())
.InSequence(s);
EXPECT_CALL(*a, DoA(2))
.Times(AnyNumber())
.InSequence(s);
EXPECT_CALL(*a, DoA(3))
.Times(AnyNumber());
a->DoA(3);
a->DoA(1);
EXPECT_NONFATAL_FAILURE(a->DoA(2), "Unexpected mock function call");
EXPECT_NONFATAL_FAILURE(delete a, "to be called even number of times");
}
// The following tests verify the message generated when a mock
// function is called.
struct Printable {
};
inline void operator<<(::std::ostream& os, const Printable&) {
os << "Printable";
}
struct Unprintable {
Unprintable() : value(0) {}
int value;
};
class MockC {
public:
MockC() {}
MOCK_METHOD6(VoidMethod, void(bool cond, int n, std::string s, void* p,
const Printable& x, Unprintable y));
MOCK_METHOD0(NonVoidMethod, int()); // NOLINT
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(MockC);
};
class VerboseFlagPreservingFixture : public testing::Test {
protected:
VerboseFlagPreservingFixture()
: saved_verbose_flag_(GMOCK_FLAG(verbose)) {}
~VerboseFlagPreservingFixture() override {
GMOCK_FLAG(verbose) = saved_verbose_flag_;
}
private:
const std::string saved_verbose_flag_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(VerboseFlagPreservingFixture);
};
#if GTEST_HAS_STREAM_REDIRECTION
// Tests that an uninteresting mock function call on a naggy mock
// generates a warning without the stack trace when
// --gmock_verbose=warning is specified.
TEST(FunctionCallMessageTest,
UninterestingCallOnNaggyMockGeneratesNoStackTraceWhenVerboseWarning) {
GMOCK_FLAG(verbose) = kWarningVerbosity;
NaggyMock<MockC> c;
CaptureStdout();
c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
const std::string output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
EXPECT_PRED_FORMAT2(IsNotSubstring, "Stack trace:", output);
}
// Tests that an uninteresting mock function call on a naggy mock
// generates a warning containing the stack trace when
// --gmock_verbose=info is specified.
TEST(FunctionCallMessageTest,
UninterestingCallOnNaggyMockGeneratesFyiWithStackTraceWhenVerboseInfo) {
GMOCK_FLAG(verbose) = kInfoVerbosity;
NaggyMock<MockC> c;
CaptureStdout();
c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
const std::string output = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
EXPECT_PRED_FORMAT2(IsSubstring, "Stack trace:", output);
# ifndef NDEBUG
// We check the stack trace content in dbg-mode only, as opt-mode
// may inline the call we are interested in seeing.
// Verifies that a void mock function's name appears in the stack
// trace.
EXPECT_PRED_FORMAT2(IsSubstring, "VoidMethod(", output);
// Verifies that a non-void mock function's name appears in the
// stack trace.
CaptureStdout();
c.NonVoidMethod();
const std::string output2 = GetCapturedStdout();
EXPECT_PRED_FORMAT2(IsSubstring, "NonVoidMethod(", output2);
# endif // NDEBUG
}
// Tests that an uninteresting mock function call on a naggy mock
// causes the function arguments and return value to be printed.
TEST(FunctionCallMessageTest,
UninterestingCallOnNaggyMockPrintsArgumentsAndReturnValue) {
// A non-void mock function.
NaggyMock<MockB> b;
CaptureStdout();
b.DoB();
const std::string output1 = GetCapturedStdout();
EXPECT_PRED_FORMAT2(
IsSubstring,
"Uninteresting mock function call - returning default value.\n"
" Function call: DoB()\n"
" Returns: 0\n", output1.c_str());
// Makes sure the return value is printed.
// A void mock function.
NaggyMock<MockC> c;
CaptureStdout();
c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
const std::string output2 = GetCapturedStdout();
EXPECT_THAT(output2.c_str(),
ContainsRegex(
"Uninteresting mock function call - returning directly\\.\n"
" Function call: VoidMethod"
"\\(false, 5, \"Hi\", NULL, @.+ "
"Printable, 4-byte object <00-00 00-00>\\)"));
// A void function has no return value to print.
}
// Tests how the --gmock_verbose flag affects Google Mock's output.
class GMockVerboseFlagTest : public VerboseFlagPreservingFixture {
public:
// Verifies that the given Google Mock output is correct. (When
// should_print is true, the output should match the given regex and
// contain the given function name in the stack trace. When it's
// false, the output should be empty.)
void VerifyOutput(const std::string& output, bool should_print,
const std::string& expected_substring,
const std::string& function_name) {
if (should_print) {
EXPECT_THAT(output.c_str(), HasSubstr(expected_substring));
# ifndef NDEBUG
// We check the stack trace content in dbg-mode only, as opt-mode
// may inline the call we are interested in seeing.
EXPECT_THAT(output.c_str(), HasSubstr(function_name));
# else
// Suppresses 'unused function parameter' warnings.
static_cast<void>(function_name);
# endif // NDEBUG
} else {
EXPECT_STREQ("", output.c_str());
}
}
// Tests how the flag affects expected calls.
void TestExpectedCall(bool should_print) {
MockA a;
EXPECT_CALL(a, DoA(5));
EXPECT_CALL(a, Binary(_, 1))
.WillOnce(Return(true));
// A void-returning function.
CaptureStdout();
a.DoA(5);
VerifyOutput(
GetCapturedStdout(),
should_print,
"Mock function call matches EXPECT_CALL(a, DoA(5))...\n"
" Function call: DoA(5)\n"
"Stack trace:\n",
"DoA");
// A non-void-returning function.
CaptureStdout();
a.Binary(2, 1);
VerifyOutput(
GetCapturedStdout(),
should_print,
"Mock function call matches EXPECT_CALL(a, Binary(_, 1))...\n"
" Function call: Binary(2, 1)\n"
" Returns: true\n"
"Stack trace:\n",
"Binary");
}
// Tests how the flag affects uninteresting calls on a naggy mock.
void TestUninterestingCallOnNaggyMock(bool should_print) {
NaggyMock<MockA> a;
const std::string note =
"NOTE: You can safely ignore the above warning unless this "
"call should not happen. Do not suppress it by blindly adding "
"an EXPECT_CALL() if you don't mean to enforce the call. "
"See "
"https://github.com/google/googletest/blob/master/googlemock/docs/"
"cook_book.md#"
"knowing-when-to-expect for details.";
// A void-returning function.
CaptureStdout();
a.DoA(5);
VerifyOutput(
GetCapturedStdout(),
should_print,
"\nGMOCK WARNING:\n"
"Uninteresting mock function call - returning directly.\n"
" Function call: DoA(5)\n" +
note,
"DoA");
// A non-void-returning function.
CaptureStdout();
a.Binary(2, 1);
VerifyOutput(
GetCapturedStdout(),
should_print,
"\nGMOCK WARNING:\n"
"Uninteresting mock function call - returning default value.\n"
" Function call: Binary(2, 1)\n"
" Returns: false\n" +
note,
"Binary");
}
};
// Tests that --gmock_verbose=info causes both expected and
// uninteresting calls to be reported.
TEST_F(GMockVerboseFlagTest, Info) {
GMOCK_FLAG(verbose) = kInfoVerbosity;
TestExpectedCall(true);
TestUninterestingCallOnNaggyMock(true);
}
// Tests that --gmock_verbose=warning causes uninteresting calls to be
// reported.
TEST_F(GMockVerboseFlagTest, Warning) {
GMOCK_FLAG(verbose) = kWarningVerbosity;
TestExpectedCall(false);
TestUninterestingCallOnNaggyMock(true);
}
// Tests that --gmock_verbose=warning causes neither expected nor
// uninteresting calls to be reported.
TEST_F(GMockVerboseFlagTest, Error) {
GMOCK_FLAG(verbose) = kErrorVerbosity;
TestExpectedCall(false);
TestUninterestingCallOnNaggyMock(false);
}
// Tests that --gmock_verbose=SOME_INVALID_VALUE has the same effect
// as --gmock_verbose=warning.
TEST_F(GMockVerboseFlagTest, InvalidFlagIsTreatedAsWarning) {
GMOCK_FLAG(verbose) = "invalid"; // Treated as "warning".
TestExpectedCall(false);
TestUninterestingCallOnNaggyMock(true);
}
#endif // GTEST_HAS_STREAM_REDIRECTION
// A helper class that generates a failure when printed. We use it to
// ensure that Google Mock doesn't print a value (even to an internal
// buffer) when it is not supposed to do so.
class PrintMeNot {};
void PrintTo(PrintMeNot /* dummy */, ::std::ostream* /* os */) {
ADD_FAILURE() << "Google Mock is printing a value that shouldn't be "
<< "printed even to an internal buffer.";
}
class LogTestHelper {
public:
LogTestHelper() {}
MOCK_METHOD1(Foo, PrintMeNot(PrintMeNot));
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(LogTestHelper);
};
class GMockLogTest : public VerboseFlagPreservingFixture {
protected:
LogTestHelper helper_;
};
TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsWarning) {
GMOCK_FLAG(verbose) = kWarningVerbosity;
EXPECT_CALL(helper_, Foo(_))
.WillOnce(Return(PrintMeNot()));
helper_.Foo(PrintMeNot()); // This is an expected call.
}
TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsError) {
GMOCK_FLAG(verbose) = kErrorVerbosity;
EXPECT_CALL(helper_, Foo(_))
.WillOnce(Return(PrintMeNot()));
helper_.Foo(PrintMeNot()); // This is an expected call.
}
TEST_F(GMockLogTest, DoesNotPrintWarningInternallyIfVerbosityIsError) {
GMOCK_FLAG(verbose) = kErrorVerbosity;
ON_CALL(helper_, Foo(_))
.WillByDefault(Return(PrintMeNot()));
helper_.Foo(PrintMeNot()); // This should generate a warning.
}
// Tests Mock::AllowLeak().
TEST(AllowLeakTest, AllowsLeakingUnusedMockObject) {
MockA* a = new MockA;
Mock::AllowLeak(a);
}
TEST(AllowLeakTest, CanBeCalledBeforeOnCall) {
MockA* a = new MockA;
Mock::AllowLeak(a);
ON_CALL(*a, DoA(_)).WillByDefault(Return());
a->DoA(0);
}
TEST(AllowLeakTest, CanBeCalledAfterOnCall) {
MockA* a = new MockA;
ON_CALL(*a, DoA(_)).WillByDefault(Return());
Mock::AllowLeak(a);
}
TEST(AllowLeakTest, CanBeCalledBeforeExpectCall) {
MockA* a = new MockA;
Mock::AllowLeak(a);
EXPECT_CALL(*a, DoA(_));
a->DoA(0);
}
TEST(AllowLeakTest, CanBeCalledAfterExpectCall) {
MockA* a = new MockA;
EXPECT_CALL(*a, DoA(_)).Times(AnyNumber());
Mock::AllowLeak(a);
}
TEST(AllowLeakTest, WorksWhenBothOnCallAndExpectCallArePresent) {
MockA* a = new MockA;
ON_CALL(*a, DoA(_)).WillByDefault(Return());
EXPECT_CALL(*a, DoA(_)).Times(AnyNumber());
Mock::AllowLeak(a);
}
// Tests that we can verify and clear a mock object's expectations
// when none of its methods has expectations.
TEST(VerifyAndClearExpectationsTest, NoMethodHasExpectations) {
MockB b;
ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can verify and clear a mock object's expectations
// when some, but not all, of its methods have expectations *and* the
// verification succeeds.
TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndSucceed) {
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1));
b.DoB();
ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can verify and clear a mock object's expectations
// when some, but not all, of its methods have expectations *and* the
// verification fails.
TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndFail) {
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1));
bool result = true;
EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b),
"Actual: never called");
ASSERT_FALSE(result);
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can verify and clear a mock object's expectations
// when all of its methods have expectations.
TEST(VerifyAndClearExpectationsTest, AllMethodsHaveExpectations) {
MockB b;
EXPECT_CALL(b, DoB())
.WillOnce(Return(1));
EXPECT_CALL(b, DoB(_))
.WillOnce(Return(2));
b.DoB();
b.DoB(1);
ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can verify and clear a mock object's expectations
// when a method has more than one expectation.
TEST(VerifyAndClearExpectationsTest, AMethodHasManyExpectations) {
MockB b;
EXPECT_CALL(b, DoB(0))
.WillOnce(Return(1));
EXPECT_CALL(b, DoB(_))
.WillOnce(Return(2));
b.DoB(1);
bool result = true;
EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b),
"Actual: never called");
ASSERT_FALSE(result);
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can call VerifyAndClearExpectations() on the same
// mock object multiple times.
TEST(VerifyAndClearExpectationsTest, CanCallManyTimes) {
MockB b;
EXPECT_CALL(b, DoB());
b.DoB();
Mock::VerifyAndClearExpectations(&b);
EXPECT_CALL(b, DoB(_))
.WillOnce(Return(1));
b.DoB(1);
Mock::VerifyAndClearExpectations(&b);
Mock::VerifyAndClearExpectations(&b);
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can clear a mock object's default actions when none
// of its methods has default actions.
TEST(VerifyAndClearTest, NoMethodHasDefaultActions) {
MockB b;
// If this crashes or generates a failure, the test will catch it.
Mock::VerifyAndClear(&b);
EXPECT_EQ(0, b.DoB());
}
// Tests that we can clear a mock object's default actions when some,
// but not all of its methods have default actions.
TEST(VerifyAndClearTest, SomeMethodsHaveDefaultActions) {
MockB b;
ON_CALL(b, DoB())
.WillByDefault(Return(1));
Mock::VerifyAndClear(&b);
// Verifies that the default action of int DoB() was removed.
EXPECT_EQ(0, b.DoB());
}
// Tests that we can clear a mock object's default actions when all of
// its methods have default actions.
TEST(VerifyAndClearTest, AllMethodsHaveDefaultActions) {
MockB b;
ON_CALL(b, DoB())
.WillByDefault(Return(1));
ON_CALL(b, DoB(_))
.WillByDefault(Return(2));
Mock::VerifyAndClear(&b);
// Verifies that the default action of int DoB() was removed.
EXPECT_EQ(0, b.DoB());
// Verifies that the default action of int DoB(int) was removed.
EXPECT_EQ(0, b.DoB(0));
}
// Tests that we can clear a mock object's default actions when a
// method has more than one ON_CALL() set on it.
TEST(VerifyAndClearTest, AMethodHasManyDefaultActions) {
MockB b;
ON_CALL(b, DoB(0))
.WillByDefault(Return(1));
ON_CALL(b, DoB(_))
.WillByDefault(Return(2));
Mock::VerifyAndClear(&b);
// Verifies that the default actions (there are two) of int DoB(int)
// were removed.
EXPECT_EQ(0, b.DoB(0));
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can call VerifyAndClear() on a mock object multiple
// times.
TEST(VerifyAndClearTest, CanCallManyTimes) {
MockB b;
ON_CALL(b, DoB())
.WillByDefault(Return(1));
Mock::VerifyAndClear(&b);
Mock::VerifyAndClear(&b);
ON_CALL(b, DoB(_))
.WillByDefault(Return(1));
Mock::VerifyAndClear(&b);
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that VerifyAndClear() works when the verification succeeds.
TEST(VerifyAndClearTest, Success) {
MockB b;
ON_CALL(b, DoB())
.WillByDefault(Return(1));
EXPECT_CALL(b, DoB(1))
.WillOnce(Return(2));
b.DoB();
b.DoB(1);
ASSERT_TRUE(Mock::VerifyAndClear(&b));
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that VerifyAndClear() works when the verification fails.
TEST(VerifyAndClearTest, Failure) {
MockB b;
ON_CALL(b, DoB(_))
.WillByDefault(Return(1));
EXPECT_CALL(b, DoB())
.WillOnce(Return(2));
b.DoB(1);
bool result = true;
EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClear(&b),
"Actual: never called");
ASSERT_FALSE(result);
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that VerifyAndClear() works when the default actions and
// expectations are set on a const mock object.
TEST(VerifyAndClearTest, Const) {
MockB b;
ON_CALL(Const(b), DoB())
.WillByDefault(Return(1));
EXPECT_CALL(Const(b), DoB())
.WillOnce(DoDefault())
.WillOnce(Return(2));
b.DoB();
b.DoB();
ASSERT_TRUE(Mock::VerifyAndClear(&b));
// There should be no expectations on the methods now, so we can
// freely call them.
EXPECT_EQ(0, b.DoB());
EXPECT_EQ(0, b.DoB(1));
}
// Tests that we can set default actions and expectations on a mock
// object after VerifyAndClear() has been called on it.
TEST(VerifyAndClearTest, CanSetDefaultActionsAndExpectationsAfterwards) {
MockB b;
ON_CALL(b, DoB())
.WillByDefault(Return(1));
EXPECT_CALL(b, DoB(_))
.WillOnce(Return(2));
b.DoB(1);
Mock::VerifyAndClear(&b);
EXPECT_CALL(b, DoB())
.WillOnce(Return(3));
ON_CALL(b, DoB(_))
.WillByDefault(Return(4));
EXPECT_EQ(3, b.DoB());
EXPECT_EQ(4, b.DoB(1));
}
// Tests that calling VerifyAndClear() on one mock object does not
// affect other mock objects (either of the same type or not).
TEST(VerifyAndClearTest, DoesNotAffectOtherMockObjects) {
MockA a;
MockB b1;
MockB b2;
ON_CALL(a, Binary(_, _))
.WillByDefault(Return(true));
EXPECT_CALL(a, Binary(_, _))
.WillOnce(DoDefault())
.WillOnce(Return(false));
ON_CALL(b1, DoB())
.WillByDefault(Return(1));
EXPECT_CALL(b1, DoB(_))
.WillOnce(Return(2));
ON_CALL(b2, DoB())
.WillByDefault(Return(3));
EXPECT_CALL(b2, DoB(_));
b2.DoB(0);
Mock::VerifyAndClear(&b2);
// Verifies that the default actions and expectations of a and b1
// are still in effect.
EXPECT_TRUE(a.Binary(0, 0));
EXPECT_FALSE(a.Binary(0, 0));
EXPECT_EQ(1, b1.DoB());
EXPECT_EQ(2, b1.DoB(0));
}
TEST(VerifyAndClearTest,
DestroyingChainedMocksDoesNotDeadlockThroughExpectations) {
std::shared_ptr<MockA> a(new MockA);
ReferenceHoldingMock test_mock;
// EXPECT_CALL stores a reference to a inside test_mock.
EXPECT_CALL(test_mock, AcceptReference(_))
.WillRepeatedly(SetArgPointee<0>(a));
// Throw away the reference to the mock that we have in a. After this, the
// only reference to it is stored by test_mock.
a.reset();
// When test_mock goes out of scope, it destroys the last remaining reference
// to the mock object originally pointed to by a. This will cause the MockA
// destructor to be called from inside the ReferenceHoldingMock destructor.
// The state of all mocks is protected by a single global lock, but there
// should be no deadlock.
}
TEST(VerifyAndClearTest,
DestroyingChainedMocksDoesNotDeadlockThroughDefaultAction) {
std::shared_ptr<MockA> a(new MockA);
ReferenceHoldingMock test_mock;
// ON_CALL stores a reference to a inside test_mock.
ON_CALL(test_mock, AcceptReference(_))
.WillByDefault(SetArgPointee<0>(a));
// Throw away the reference to the mock that we have in a. After this, the
// only reference to it is stored by test_mock.
a.reset();
// When test_mock goes out of scope, it destroys the last remaining reference
// to the mock object originally pointed to by a. This will cause the MockA
// destructor to be called from inside the ReferenceHoldingMock destructor.
// The state of all mocks is protected by a single global lock, but there
// should be no deadlock.
}
// Tests that a mock function's action can call a mock function
// (either the same function or a different one) either as an explicit
// action or as a default action without causing a dead lock. It
// verifies that the action is not performed inside the critical
// section.
TEST(SynchronizationTest, CanCallMockMethodInAction) {
MockA a;
MockC c;
ON_CALL(a, DoA(_))
.WillByDefault(IgnoreResult(InvokeWithoutArgs(&c,
&MockC::NonVoidMethod)));
EXPECT_CALL(a, DoA(1));
EXPECT_CALL(a, DoA(1))
.WillOnce(Invoke(&a, &MockA::DoA))
.RetiresOnSaturation();
EXPECT_CALL(c, NonVoidMethod());
a.DoA(1);
// This will match the second EXPECT_CALL() and trigger another a.DoA(1),
// which will in turn match the first EXPECT_CALL() and trigger a call to
// c.NonVoidMethod() that was specified by the ON_CALL() since the first
// EXPECT_CALL() did not specify an action.
}
TEST(ParameterlessExpectationsTest, CanSetExpectationsWithoutMatchers) {
MockA a;
int do_a_arg0 = 0;
ON_CALL(a, DoA).WillByDefault(SaveArg<0>(&do_a_arg0));
int do_a_47_arg0 = 0;
ON_CALL(a, DoA(47)).WillByDefault(SaveArg<0>(&do_a_47_arg0));
a.DoA(17);
EXPECT_THAT(do_a_arg0, 17);
EXPECT_THAT(do_a_47_arg0, 0);
a.DoA(47);
EXPECT_THAT(do_a_arg0, 17);
EXPECT_THAT(do_a_47_arg0, 47);
ON_CALL(a, Binary).WillByDefault(Return(true));
ON_CALL(a, Binary(_, 14)).WillByDefault(Return(false));
EXPECT_THAT(a.Binary(14, 17), true);
EXPECT_THAT(a.Binary(17, 14), false);
}
TEST(ParameterlessExpectationsTest, CanSetExpectationsForOverloadedMethods) {
MockB b;
ON_CALL(b, DoB()).WillByDefault(Return(9));
ON_CALL(b, DoB(5)).WillByDefault(Return(11));
EXPECT_THAT(b.DoB(), 9);
EXPECT_THAT(b.DoB(1), 0); // default value
EXPECT_THAT(b.DoB(5), 11);
}
struct MockWithConstMethods {
public:
MOCK_CONST_METHOD1(Foo, int(int));
MOCK_CONST_METHOD2(Bar, int(int, const char*));
};
TEST(ParameterlessExpectationsTest, CanSetExpectationsForConstMethods) {
MockWithConstMethods mock;
ON_CALL(mock, Foo).WillByDefault(Return(7));
ON_CALL(mock, Bar).WillByDefault(Return(33));
EXPECT_THAT(mock.Foo(17), 7);
EXPECT_THAT(mock.Bar(27, "purple"), 33);
}
class MockConstOverload {
public:
MOCK_METHOD1(Overloaded, int(int));
MOCK_CONST_METHOD1(Overloaded, int(int));
};
TEST(ParameterlessExpectationsTest,
CanSetExpectationsForConstOverloadedMethods) {
MockConstOverload mock;
ON_CALL(mock, Overloaded(_)).WillByDefault(Return(7));
ON_CALL(mock, Overloaded(5)).WillByDefault(Return(9));
ON_CALL(Const(mock), Overloaded(5)).WillByDefault(Return(11));
ON_CALL(Const(mock), Overloaded(7)).WillByDefault(Return(13));
EXPECT_THAT(mock.Overloaded(1), 7);
EXPECT_THAT(mock.Overloaded(5), 9);
EXPECT_THAT(mock.Overloaded(7), 7);
const MockConstOverload& const_mock = mock;
EXPECT_THAT(const_mock.Overloaded(1), 0);
EXPECT_THAT(const_mock.Overloaded(5), 11);
EXPECT_THAT(const_mock.Overloaded(7), 13);
}
} // namespace
// Allows the user to define their own main and then invoke gmock_main
// from it. This might be necessary on some platforms which require
// specific setup and teardown.
#if GMOCK_RENAME_MAIN
int gmock_main(int argc, char **argv) {
#else
int main(int argc, char **argv) {
#endif // GMOCK_RENAME_MAIN
testing::InitGoogleMock(&argc, argv);
// Ensures that the tests pass no matter what value of
// --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
testing::GMOCK_FLAG(catch_leaked_mocks) = true;
testing::GMOCK_FLAG(verbose) = testing::internal::kWarningVerbosity;
return RUN_ALL_TESTS();
}
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