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  1. # Copyright 2006, Google Inc.
  2. # All rights reserved.
  3. #
  4. # Redistribution and use in source and binary forms, with or without
  5. # modification, are permitted provided that the following conditions are
  6. # met:
  7. #
  8. #     * Redistributions of source code must retain the above copyright
  9. # notice, this list of conditions and the following disclaimer.
  10. #     * Redistributions in binary form must reproduce the above
  11. # copyright notice, this list of conditions and the following disclaimer
  12. # in the documentation and/or other materials provided with the
  13. # distribution.
  14. #     * Neither the name of Google Inc. nor the names of its
  15. # contributors may be used to endorse or promote products derived from
  16. # this software without specific prior written permission.
  17. #
  18. # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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  28. # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  
  30. """Unit test utilities for gtest_xml_output"""
  31.  
  32. import re
  33. from xml.dom import minidom, Node
  34. import gtest_test_utils
  35.  
  36. GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
  37.  
  38. class GTestXMLTestCase(gtest_test_utils.TestCase):
  39.   """
  40.  Base class for tests of Google Test's XML output functionality.
  41.  """
  42.  
  43.  
  44.   def AssertEquivalentNodes(self, expected_node, actual_node):
  45.     """
  46.    Asserts that actual_node (a DOM node object) is equivalent to
  47.    expected_node (another DOM node object), in that either both of
  48.    them are CDATA nodes and have the same value, or both are DOM
  49.    elements and actual_node meets all of the following conditions:
  50.  
  51.    *  It has the same tag name as expected_node.
  52.    *  It has the same set of attributes as expected_node, each with
  53.       the same value as the corresponding attribute of expected_node.
  54.       Exceptions are any attribute named "time", which needs only be
  55.       convertible to a floating-point number and any attribute named
  56.       "type_param" which only has to be non-empty.
  57.    *  It has an equivalent set of child nodes (including elements and
  58.       CDATA sections) as expected_node.  Note that we ignore the
  59.       order of the children as they are not guaranteed to be in any
  60.       particular order.
  61.    """
  62.  
  63.     if expected_node.nodeType == Node.CDATA_SECTION_NODE:
  64.       self.assertEquals(Node.CDATA_SECTION_NODE, actual_node.nodeType)
  65.       self.assertEquals(expected_node.nodeValue, actual_node.nodeValue)
  66.       return
  67.  
  68.     self.assertEquals(Node.ELEMENT_NODE, actual_node.nodeType)
  69.     self.assertEquals(Node.ELEMENT_NODE, expected_node.nodeType)
  70.     self.assertEquals(expected_node.tagName, actual_node.tagName)
  71.  
  72.     expected_attributes = expected_node.attributes
  73.     actual_attributes   = actual_node  .attributes
  74.     self.assertEquals(
  75.         expected_attributes.length, actual_attributes.length,
  76.         'attribute numbers differ in element %s:\nExpected: %r\nActual: %r' % (
  77.             actual_node.tagName, expected_attributes.keys(),
  78.             actual_attributes.keys()))
  79.     for i in range(expected_attributes.length):
  80.       expected_attr = expected_attributes.item(i)
  81.       actual_attr   = actual_attributes.get(expected_attr.name)
  82.       self.assert_(
  83.           actual_attr is not None,
  84.           'expected attribute %s not found in element %s' %
  85.           (expected_attr.name, actual_node.tagName))
  86.       self.assertEquals(
  87.           expected_attr.value, actual_attr.value,
  88.           ' values of attribute %s in element %s differ: %s vs %s' %
  89.           (expected_attr.name, actual_node.tagName,
  90.            expected_attr.value, actual_attr.value))
  91.  
  92.     expected_children = self._GetChildren(expected_node)
  93.     actual_children = self._GetChildren(actual_node)
  94.     self.assertEquals(
  95.         len(expected_children), len(actual_children),
  96.         'number of child elements differ in element ' + actual_node.tagName)
  97.     for child_id, child in expected_children.iteritems():
  98.       self.assert_(child_id in actual_children,
  99.                    '<%s> is not in <%s> (in element %s)' %
  100.                    (child_id, actual_children, actual_node.tagName))
  101.       self.AssertEquivalentNodes(child, actual_children[child_id])
  102.  
  103.   identifying_attribute = {
  104.       'testsuites': 'name',
  105.       'testsuite': 'name',
  106.       'testcase': 'name',
  107.       'failure': 'message',
  108.       'property': 'name',
  109.   }
  110.  
  111.   def _GetChildren(self, element):
  112.     """
  113.    Fetches all of the child nodes of element, a DOM Element object.
  114.    Returns them as the values of a dictionary keyed by the IDs of the
  115.    children.  For <testsuites>, <testsuite>, <testcase>, and <property>
  116.    elements, the ID is the value of their "name" attribute; for <failure>
  117.    elements, it is the value of the "message" attribute; for <properties>
  118.    elements, it is the value of their parent's "name" attribute plus the
  119.    literal string "properties"; CDATA sections and non-whitespace
  120.    text nodes are concatenated into a single CDATA section with ID
  121.    "detail".  An exception is raised if any element other than the above
  122.    four is encountered, if two child elements with the same identifying
  123.    attributes are encountered, or if any other type of node is encountered.
  124.    """
  125.  
  126.     children = {}
  127.     for child in element.childNodes:
  128.       if child.nodeType == Node.ELEMENT_NODE:
  129.         if child.tagName == 'properties':
  130.           self.assert_(child.parentNode is not None,
  131.                        'Encountered <properties> element without a parent')
  132.           child_id = child.parentNode.getAttribute('name') + '-properties'
  133.         else:
  134.           self.assert_(child.tagName in self.identifying_attribute,
  135.                        'Encountered unknown element <%s>' % child.tagName)
  136.           child_id = child.getAttribute(
  137.               self.identifying_attribute[child.tagName])
  138.         self.assert_(child_id not in children)
  139.         children[child_id] = child
  140.       elif child.nodeType in [Node.TEXT_NODE, Node.CDATA_SECTION_NODE]:
  141.         if 'detail' not in children:
  142.           if (child.nodeType == Node.CDATA_SECTION_NODE or
  143.               not child.nodeValue.isspace()):
  144.             children['detail'] = child.ownerDocument.createCDATASection(
  145.                 child.nodeValue)
  146.         else:
  147.           children['detail'].nodeValue += child.nodeValue
  148.       else:
  149.         self.fail('Encountered unexpected node type %d' % child.nodeType)
  150.     return children
  151.  
  152.   def NormalizeXml(self, element):
  153.     """
  154.    Normalizes Google Test's XML output to eliminate references to transient
  155.    information that may change from run to run.
  156.  
  157.    *  The "time" attribute of <testsuites>, <testsuite> and <testcase>
  158.       elements is replaced with a single asterisk, if it contains
  159.       only digit characters.
  160.    *  The "timestamp" attribute of <testsuites> elements is replaced with a
  161.       single asterisk, if it contains a valid ISO8601 datetime value.
  162.    *  The "type_param" attribute of <testcase> elements is replaced with a
  163.       single asterisk (if it sn non-empty) as it is the type name returned
  164.       by the compiler and is platform dependent.
  165.    *  The line info reported in the first line of the "message"
  166.       attribute and CDATA section of <failure> elements is replaced with the
  167.       file's basename and a single asterisk for the line number.
  168.    *  The directory names in file paths are removed.
  169.    *  The stack traces are removed.
  170.    """
  171.  
  172.     if element.tagName == 'testsuites':
  173.       timestamp = element.getAttributeNode('timestamp')
  174.       timestamp.value = re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d$',
  175.                                '*', timestamp.value)
  176.     if element.tagName in ('testsuites', 'testsuite', 'testcase'):
  177.       time = element.getAttributeNode('time')
  178.       time.value = re.sub(r'^\d+(\.\d+)?$', '*', time.value)
  179.       type_param = element.getAttributeNode('type_param')
  180.       if type_param and type_param.value:
  181.         type_param.value = '*'
  182.     elif element.tagName == 'failure':
  183.       source_line_pat = r'^.*[/\\](.*:)\d+\n'
  184.       # Replaces the source line information with a normalized form.
  185.       message = element.getAttributeNode('message')
  186.       message.value = re.sub(source_line_pat, '\\1*\n', message.value)
  187.       for child in element.childNodes:
  188.         if child.nodeType == Node.CDATA_SECTION_NODE:
  189.           # Replaces the source line information with a normalized form.
  190.           cdata = re.sub(source_line_pat, '\\1*\n', child.nodeValue)
  191.           # Removes the actual stack trace.
  192.           child.nodeValue = re.sub(r'Stack trace:\n(.|\n)*',
  193.                                    'Stack trace:\n*', cdata)
  194.     for child in element.childNodes:
  195.       if child.nodeType == Node.ELEMENT_NODE:
  196.         self.NormalizeXml(child)
  197.