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gtest_xml_test_utils.py
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R9484 sp4e-homework-lars-bertil
gtest_xml_test_utils.py
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# Copyright 2006, 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.
"""Unit test utilities for gtest_xml_output"""
import
re
from
xml.dom
import
minidom
,
Node
import
gtest_test_utils
GTEST_DEFAULT_OUTPUT_FILE
=
'test_detail.xml'
class
GTestXMLTestCase
(
gtest_test_utils
.
TestCase
):
"""
Base class for tests of Google Test's XML output functionality.
"""
def
AssertEquivalentNodes
(
self
,
expected_node
,
actual_node
):
"""
Asserts that actual_node (a DOM node object) is equivalent to
expected_node (another DOM node object), in that either both of
them are CDATA nodes and have the same value, or both are DOM
elements and actual_node meets all of the following conditions:
* It has the same tag name as expected_node.
* It has the same set of attributes as expected_node, each with
the same value as the corresponding attribute of expected_node.
Exceptions are any attribute named "time", which needs only be
convertible to a floating-point number and any attribute named
"type_param" which only has to be non-empty.
* It has an equivalent set of child nodes (including elements and
CDATA sections) as expected_node. Note that we ignore the
order of the children as they are not guaranteed to be in any
particular order.
"""
if
expected_node
.
nodeType
==
Node
.
CDATA_SECTION_NODE
:
self
.
assertEquals
(
Node
.
CDATA_SECTION_NODE
,
actual_node
.
nodeType
)
self
.
assertEquals
(
expected_node
.
nodeValue
,
actual_node
.
nodeValue
)
return
self
.
assertEquals
(
Node
.
ELEMENT_NODE
,
actual_node
.
nodeType
)
self
.
assertEquals
(
Node
.
ELEMENT_NODE
,
expected_node
.
nodeType
)
self
.
assertEquals
(
expected_node
.
tagName
,
actual_node
.
tagName
)
expected_attributes
=
expected_node
.
attributes
actual_attributes
=
actual_node
.
attributes
self
.
assertEquals
(
expected_attributes
.
length
,
actual_attributes
.
length
,
'attribute numbers differ in element
%s
:
\n
Expected:
%r
\n
Actual:
%r
'
%
(
actual_node
.
tagName
,
expected_attributes
.
keys
(),
actual_attributes
.
keys
()))
for
i
in
range
(
expected_attributes
.
length
):
expected_attr
=
expected_attributes
.
item
(
i
)
actual_attr
=
actual_attributes
.
get
(
expected_attr
.
name
)
self
.
assert_
(
actual_attr
is
not
None
,
'expected attribute
%s
not found in element
%s
'
%
(
expected_attr
.
name
,
actual_node
.
tagName
))
self
.
assertEquals
(
expected_attr
.
value
,
actual_attr
.
value
,
' values of attribute
%s
in element
%s
differ:
%s
vs
%s
'
%
(
expected_attr
.
name
,
actual_node
.
tagName
,
expected_attr
.
value
,
actual_attr
.
value
))
expected_children
=
self
.
_GetChildren
(
expected_node
)
actual_children
=
self
.
_GetChildren
(
actual_node
)
self
.
assertEquals
(
len
(
expected_children
),
len
(
actual_children
),
'number of child elements differ in element '
+
actual_node
.
tagName
)
for
child_id
,
child
in
expected_children
.
items
():
self
.
assert_
(
child_id
in
actual_children
,
'<
%s
> is not in <
%s
> (in element
%s
)'
%
(
child_id
,
actual_children
,
actual_node
.
tagName
))
self
.
AssertEquivalentNodes
(
child
,
actual_children
[
child_id
])
identifying_attribute
=
{
'testsuites'
:
'name'
,
'testsuite'
:
'name'
,
'testcase'
:
'name'
,
'failure'
:
'message'
,
'property'
:
'name'
,
}
def
_GetChildren
(
self
,
element
):
"""
Fetches all of the child nodes of element, a DOM Element object.
Returns them as the values of a dictionary keyed by the IDs of the
children. For <testsuites>, <testsuite>, <testcase>, and <property>
elements, the ID is the value of their "name" attribute; for <failure>
elements, it is the value of the "message" attribute; for <properties>
elements, it is the value of their parent's "name" attribute plus the
literal string "properties"; CDATA sections and non-whitespace
text nodes are concatenated into a single CDATA section with ID
"detail". An exception is raised if any element other than the above
four is encountered, if two child elements with the same identifying
attributes are encountered, or if any other type of node is encountered.
"""
children
=
{}
for
child
in
element
.
childNodes
:
if
child
.
nodeType
==
Node
.
ELEMENT_NODE
:
if
child
.
tagName
==
'properties'
:
self
.
assert_
(
child
.
parentNode
is
not
None
,
'Encountered <properties> element without a parent'
)
child_id
=
child
.
parentNode
.
getAttribute
(
'name'
)
+
'-properties'
else
:
self
.
assert_
(
child
.
tagName
in
self
.
identifying_attribute
,
'Encountered unknown element <
%s
>'
%
child
.
tagName
)
child_id
=
child
.
getAttribute
(
self
.
identifying_attribute
[
child
.
tagName
])
self
.
assert_
(
child_id
not
in
children
)
children
[
child_id
]
=
child
elif
child
.
nodeType
in
[
Node
.
TEXT_NODE
,
Node
.
CDATA_SECTION_NODE
]:
if
'detail'
not
in
children
:
if
(
child
.
nodeType
==
Node
.
CDATA_SECTION_NODE
or
not
child
.
nodeValue
.
isspace
()):
children
[
'detail'
]
=
child
.
ownerDocument
.
createCDATASection
(
child
.
nodeValue
)
else
:
children
[
'detail'
]
.
nodeValue
+=
child
.
nodeValue
else
:
self
.
fail
(
'Encountered unexpected node type
%d
'
%
child
.
nodeType
)
return
children
def
NormalizeXml
(
self
,
element
):
"""
Normalizes Google Test's XML output to eliminate references to transient
information that may change from run to run.
* The "time" attribute of <testsuites>, <testsuite> and <testcase>
elements is replaced with a single asterisk, if it contains
only digit characters.
* The "timestamp" attribute of <testsuites> elements is replaced with a
single asterisk, if it contains a valid ISO8601 datetime value.
* The "type_param" attribute of <testcase> elements is replaced with a
single asterisk (if it sn non-empty) as it is the type name returned
by the compiler and is platform dependent.
* The line info reported in the first line of the "message"
attribute and CDATA section of <failure> elements is replaced with the
file's basename and a single asterisk for the line number.
* The directory names in file paths are removed.
* The stack traces are removed.
"""
if
element
.
tagName
in
(
'testsuites'
,
'testsuite'
,
'testcase'
):
timestamp
=
element
.
getAttributeNode
(
'timestamp'
)
timestamp
.
value
=
re
.
sub
(
r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d$'
,
'*'
,
timestamp
.
value
)
if
element
.
tagName
in
(
'testsuites'
,
'testsuite'
,
'testcase'
):
time
=
element
.
getAttributeNode
(
'time'
)
time
.
value
=
re
.
sub
(
r'^\d+(\.\d+)?$'
,
'*'
,
time
.
value
)
type_param
=
element
.
getAttributeNode
(
'type_param'
)
if
type_param
and
type_param
.
value
:
type_param
.
value
=
'*'
elif
element
.
tagName
==
'failure'
:
source_line_pat
=
r'^.*[/\\](.*:)\d+\n'
# Replaces the source line information with a normalized form.
message
=
element
.
getAttributeNode
(
'message'
)
message
.
value
=
re
.
sub
(
source_line_pat
,
'
\\
1*
\n
'
,
message
.
value
)
for
child
in
element
.
childNodes
:
if
child
.
nodeType
==
Node
.
CDATA_SECTION_NODE
:
# Replaces the source line information with a normalized form.
cdata
=
re
.
sub
(
source_line_pat
,
'
\\
1*
\n
'
,
child
.
nodeValue
)
# Removes the actual stack trace.
child
.
nodeValue
=
re
.
sub
(
r'Stack trace:\n(.|\n)*'
,
'Stack trace:
\n
*'
,
cdata
)
for
child
in
element
.
childNodes
:
if
child
.
nodeType
==
Node
.
ELEMENT_NODE
:
self
.
NormalizeXml
(
child
)
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