xref: /freebsd/contrib/googletest/googlemock/test/gmock_output_test.py (revision cab6a39d7b343596a5823e65c0f7b426551ec22d) 
1#!/usr/bin/env python
2#
3# Copyright 2008, Google Inc.
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30# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32r"""Tests the text output of Google C++ Mocking Framework.
33
34To update the golden file:
35gmock_output_test.py --build_dir=BUILD/DIR --gengolden
36where BUILD/DIR contains the built gmock_output_test_ file.
37gmock_output_test.py --gengolden
38gmock_output_test.py
39
40"""
41
42import os
43import re
44import sys
45import gmock_test_utils
46
47
48# The flag for generating the golden file
49GENGOLDEN_FLAG = '--gengolden'
50
51PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_output_test_')
52COMMAND = [PROGRAM_PATH, '--gtest_stack_trace_depth=0', '--gtest_print_time=0']
53GOLDEN_NAME = 'gmock_output_test_golden.txt'
54GOLDEN_PATH = os.path.join(gmock_test_utils.GetSourceDir(), GOLDEN_NAME)
55
56
57def ToUnixLineEnding(s):
58  """Changes all Windows/Mac line endings in s to UNIX line endings."""
59
60  return s.replace('\r\n', '\n').replace('\r', '\n')
61
62
63def RemoveReportHeaderAndFooter(output):
64  """Removes Google Test result report's header and footer from the output."""
65
66  output = re.sub(r'.*gtest_main.*\n', '', output)
67  output = re.sub(r'\[.*\d+ tests.*\n', '', output)
68  output = re.sub(r'\[.* test environment .*\n', '', output)
69  output = re.sub(r'\[=+\] \d+ tests .* ran.*', '', output)
70  output = re.sub(r'.* FAILED TESTS\n', '', output)
71  return output
72
73
74def RemoveLocations(output):
75  """Removes all file location info from a Google Test program's output.
76
77  Args:
78       output:  the output of a Google Test program.
79
80  Returns:
81       output with all file location info (in the form of
82       'DIRECTORY/FILE_NAME:LINE_NUMBER: 'or
83       'DIRECTORY\\FILE_NAME(LINE_NUMBER): ') replaced by
84       'FILE:#: '.
85  """
86
87  return re.sub(r'.*[/\\](.+)(\:\d+|\(\d+\))\:', 'FILE:#:', output)
88
89
90def NormalizeErrorMarker(output):
91  """Normalizes the error marker, which is different on Windows vs on Linux."""
92
93  return re.sub(r' error: ', ' Failure\n', output)
94
95
96def RemoveMemoryAddresses(output):
97  """Removes memory addresses from the test output."""
98
99  return re.sub(r'@\w+', '@0x#', output)
100
101
102def RemoveTestNamesOfLeakedMocks(output):
103  """Removes the test names of leaked mock objects from the test output."""
104
105  return re.sub(r'\(used in test .+\) ', '', output)
106
107
108def GetLeakyTests(output):
109  """Returns a list of test names that leak mock objects."""
110
111  # findall() returns a list of all matches of the regex in output.
112  # For example, if '(used in test FooTest.Bar)' is in output, the
113  # list will contain 'FooTest.Bar'.
114  return re.findall(r'\(used in test (.+)\)', output)
115
116
117def GetNormalizedOutputAndLeakyTests(output):
118  """Normalizes the output of gmock_output_test_.
119
120  Args:
121    output: The test output.
122
123  Returns:
124    A tuple (the normalized test output, the list of test names that have
125    leaked mocks).
126  """
127
128  output = ToUnixLineEnding(output)
129  output = RemoveReportHeaderAndFooter(output)
130  output = NormalizeErrorMarker(output)
131  output = RemoveLocations(output)
132  output = RemoveMemoryAddresses(output)
133  return (RemoveTestNamesOfLeakedMocks(output), GetLeakyTests(output))
134
135
136def GetShellCommandOutput(cmd):
137  """Runs a command in a sub-process, and returns its STDOUT in a string."""
138
139  return gmock_test_utils.Subprocess(cmd, capture_stderr=False).output
140
141
142def GetNormalizedCommandOutputAndLeakyTests(cmd):
143  """Runs a command and returns its normalized output and a list of leaky tests.
144
145  Args:
146    cmd:  the shell command.
147  """
148
149  # Disables exception pop-ups on Windows.
150  os.environ['GTEST_CATCH_EXCEPTIONS'] = '1'
151  return GetNormalizedOutputAndLeakyTests(GetShellCommandOutput(cmd))
152
153
154class GMockOutputTest(gmock_test_utils.TestCase):
155  def testOutput(self):
156    (output, leaky_tests) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
157    golden_file = open(GOLDEN_PATH, 'rb')
158    golden = golden_file.read()
159    golden_file.close()
160
161    # The normalized output should match the golden file.
162    self.assertEquals(golden, output)
163
164    # The raw output should contain 2 leaked mock object errors for
165    # test GMockOutputTest.CatchesLeakedMocks.
166    self.assertEquals(['GMockOutputTest.CatchesLeakedMocks',
167                       'GMockOutputTest.CatchesLeakedMocks'],
168                      leaky_tests)
169
170
171if __name__ == '__main__':
172  if sys.argv[1:] == [GENGOLDEN_FLAG]:
173    (output, _) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
174    golden_file = open(GOLDEN_PATH, 'wb')
175    golden_file.write(output)
176    golden_file.close()
177    # Suppress the error "googletest was imported but a call to its main()
178    # was never detected."
179    os._exit(0)
180  else:
181    gmock_test_utils.Main()
182