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R9484/googlemock/test/gmock-cardinalities_test.cc
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gmock-cardinalities_test.cc
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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 built-in cardinalities.
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "gtest/gtest-spi.h"
namespace {
using std::stringstream;
using testing::AnyNumber;
using testing::AtLeast;
using testing::AtMost;
using testing::Between;
using testing::Cardinality;
using testing::CardinalityInterface;
using testing::Exactly;
using testing::IsSubstring;
using testing::MakeCardinality;
class MockFoo {
public:
MockFoo() {}
MOCK_METHOD0(Bar, int()); // NOLINT
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
};
// Tests that Cardinality objects can be default constructed.
TEST(CardinalityTest, IsDefaultConstructable) {
Cardinality c;
}
// Tests that Cardinality objects are copyable.
TEST(CardinalityTest, IsCopyable) {
// Tests the copy constructor.
Cardinality c = Exactly(1);
EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
EXPECT_TRUE(c.IsSaturatedByCallCount(1));
// Tests the assignment operator.
c = Exactly(2);
EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_TRUE(c.IsSaturatedByCallCount(2));
}
TEST(CardinalityTest, IsOverSaturatedByCallCountWorks) {
const Cardinality c = AtMost(5);
EXPECT_FALSE(c.IsOverSaturatedByCallCount(4));
EXPECT_FALSE(c.IsOverSaturatedByCallCount(5));
EXPECT_TRUE(c.IsOverSaturatedByCallCount(6));
}
// Tests that Cardinality::DescribeActualCallCountTo() creates the
// correct description.
TEST(CardinalityTest, CanDescribeActualCallCount) {
stringstream ss0;
Cardinality::DescribeActualCallCountTo(0, &ss0);
EXPECT_EQ("never called", ss0.str());
stringstream ss1;
Cardinality::DescribeActualCallCountTo(1, &ss1);
EXPECT_EQ("called once", ss1.str());
stringstream ss2;
Cardinality::DescribeActualCallCountTo(2, &ss2);
EXPECT_EQ("called twice", ss2.str());
stringstream ss3;
Cardinality::DescribeActualCallCountTo(3, &ss3);
EXPECT_EQ("called 3 times", ss3.str());
}
// Tests AnyNumber()
TEST(AnyNumber, Works) {
const Cardinality c = AnyNumber();
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
EXPECT_FALSE(c.IsSaturatedByCallCount(1));
EXPECT_TRUE(c.IsSatisfiedByCallCount(9));
EXPECT_FALSE(c.IsSaturatedByCallCount(9));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "called any number of times",
ss.str());
}
TEST(AnyNumberTest, HasCorrectBounds) {
const Cardinality c = AnyNumber();
EXPECT_EQ(0, c.ConservativeLowerBound());
EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
}
// Tests AtLeast(n).
TEST(AtLeastTest, OnNegativeNumber) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
AtLeast(-1);
}, "The invocation lower bound must be >= 0");
}
TEST(AtLeastTest, OnZero) {
const Cardinality c = AtLeast(0);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
EXPECT_FALSE(c.IsSaturatedByCallCount(1));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "any number of times",
ss.str());
}
TEST(AtLeastTest, OnPositiveNumber) {
const Cardinality c = AtLeast(2);
EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
EXPECT_FALSE(c.IsSaturatedByCallCount(1));
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_FALSE(c.IsSaturatedByCallCount(2));
stringstream ss1;
AtLeast(1).DescribeTo(&ss1);
EXPECT_PRED_FORMAT2(IsSubstring, "at least once",
ss1.str());
stringstream ss2;
c.DescribeTo(&ss2);
EXPECT_PRED_FORMAT2(IsSubstring, "at least twice",
ss2.str());
stringstream ss3;
AtLeast(3).DescribeTo(&ss3);
EXPECT_PRED_FORMAT2(IsSubstring, "at least 3 times",
ss3.str());
}
TEST(AtLeastTest, HasCorrectBounds) {
const Cardinality c = AtLeast(2);
EXPECT_EQ(2, c.ConservativeLowerBound());
EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
}
// Tests AtMost(n).
TEST(AtMostTest, OnNegativeNumber) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
AtMost(-1);
}, "The invocation upper bound must be >= 0");
}
TEST(AtMostTest, OnZero) {
const Cardinality c = AtMost(0);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_TRUE(c.IsSaturatedByCallCount(0));
EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
EXPECT_TRUE(c.IsSaturatedByCallCount(1));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "never called",
ss.str());
}
TEST(AtMostTest, OnPositiveNumber) {
const Cardinality c = AtMost(2);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
EXPECT_FALSE(c.IsSaturatedByCallCount(1));
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_TRUE(c.IsSaturatedByCallCount(2));
stringstream ss1;
AtMost(1).DescribeTo(&ss1);
EXPECT_PRED_FORMAT2(IsSubstring, "called at most once",
ss1.str());
stringstream ss2;
c.DescribeTo(&ss2);
EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
ss2.str());
stringstream ss3;
AtMost(3).DescribeTo(&ss3);
EXPECT_PRED_FORMAT2(IsSubstring, "called at most 3 times",
ss3.str());
}
TEST(AtMostTest, HasCorrectBounds) {
const Cardinality c = AtMost(2);
EXPECT_EQ(0, c.ConservativeLowerBound());
EXPECT_EQ(2, c.ConservativeUpperBound());
}
// Tests Between(m, n).
TEST(BetweenTest, OnNegativeStart) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
Between(-1, 2);
}, "The invocation lower bound must be >= 0, but is actually -1");
}
TEST(BetweenTest, OnNegativeEnd) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
Between(1, -2);
}, "The invocation upper bound must be >= 0, but is actually -2");
}
TEST(BetweenTest, OnStartBiggerThanEnd) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
Between(2, 1);
}, "The invocation upper bound (1) must be >= "
"the invocation lower bound (2)");
}
TEST(BetweenTest, OnZeroStartAndZeroEnd) {
const Cardinality c = Between(0, 0);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_TRUE(c.IsSaturatedByCallCount(0));
EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
EXPECT_TRUE(c.IsSaturatedByCallCount(1));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "never called",
ss.str());
}
TEST(BetweenTest, OnZeroStartAndNonZeroEnd) {
const Cardinality c = Between(0, 2);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_TRUE(c.IsSaturatedByCallCount(2));
EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
EXPECT_TRUE(c.IsSaturatedByCallCount(4));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
ss.str());
}
TEST(BetweenTest, OnSameStartAndEnd) {
const Cardinality c = Between(3, 3);
EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
EXPECT_FALSE(c.IsSaturatedByCallCount(2));
EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
EXPECT_TRUE(c.IsSaturatedByCallCount(3));
EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
EXPECT_TRUE(c.IsSaturatedByCallCount(4));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
ss.str());
}
TEST(BetweenTest, OnDifferentStartAndEnd) {
const Cardinality c = Between(3, 5);
EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
EXPECT_FALSE(c.IsSaturatedByCallCount(2));
EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
EXPECT_FALSE(c.IsSaturatedByCallCount(3));
EXPECT_TRUE(c.IsSatisfiedByCallCount(5));
EXPECT_TRUE(c.IsSaturatedByCallCount(5));
EXPECT_FALSE(c.IsSatisfiedByCallCount(6));
EXPECT_TRUE(c.IsSaturatedByCallCount(6));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "called between 3 and 5 times",
ss.str());
}
TEST(BetweenTest, HasCorrectBounds) {
const Cardinality c = Between(3, 5);
EXPECT_EQ(3, c.ConservativeLowerBound());
EXPECT_EQ(5, c.ConservativeUpperBound());
}
// Tests Exactly(n).
TEST(ExactlyTest, OnNegativeNumber) {
EXPECT_NONFATAL_FAILURE({ // NOLINT
Exactly(-1);
}, "The invocation lower bound must be >= 0");
}
TEST(ExactlyTest, OnZero) {
const Cardinality c = Exactly(0);
EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
EXPECT_TRUE(c.IsSaturatedByCallCount(0));
EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
EXPECT_TRUE(c.IsSaturatedByCallCount(1));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_PRED_FORMAT2(IsSubstring, "never called",
ss.str());
}
TEST(ExactlyTest, OnPositiveNumber) {
const Cardinality c = Exactly(2);
EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
EXPECT_FALSE(c.IsSaturatedByCallCount(0));
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_TRUE(c.IsSaturatedByCallCount(2));
stringstream ss1;
Exactly(1).DescribeTo(&ss1);
EXPECT_PRED_FORMAT2(IsSubstring, "called once",
ss1.str());
stringstream ss2;
c.DescribeTo(&ss2);
EXPECT_PRED_FORMAT2(IsSubstring, "called twice",
ss2.str());
stringstream ss3;
Exactly(3).DescribeTo(&ss3);
EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
ss3.str());
}
TEST(ExactlyTest, HasCorrectBounds) {
const Cardinality c = Exactly(3);
EXPECT_EQ(3, c.ConservativeLowerBound());
EXPECT_EQ(3, c.ConservativeUpperBound());
}
// Tests that a user can make their own cardinality by implementing
// CardinalityInterface and calling MakeCardinality().
class EvenCardinality : 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* ss) const override {
*ss << "called even number of times";
}
};
TEST(MakeCardinalityTest, ConstructsCardinalityFromInterface) {
const Cardinality c = MakeCardinality(new EvenCardinality);
EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
EXPECT_FALSE(c.IsSatisfiedByCallCount(3));
EXPECT_FALSE(c.IsSaturatedByCallCount(10000));
stringstream ss;
c.DescribeTo(&ss);
EXPECT_EQ("called even number of times", ss.str());
}
} // Unnamed namespace
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