#!/usr/bin/env python
#
# Copyright 2006, Google Inc.
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"""Unit test for Google Test's --gtest_list_tests flag.
A user can ask Google Test to list all tests by specifying the
--gtest_list_tests flag. If output is requested, via --gtest_output=xml
or --gtest_output=json, the tests are listed, with extra information in the
output file.
This script tests such functionality by invoking gtest_list_output_unittest_
(a program written with Google Test) the command line flags.
"""
import os
import re
import gtest_test_utils
GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
GTEST_OUTPUT_FLAG = '--gtest_output'
EXPECTED_XML = """<\?xml version="1.0" encoding="UTF-8"\?>
<testsuites tests="2" name="AllTests">
<testsuite name="FooTest" tests="2">
<testcase name="Test1" file=".*gtest_list_output_unittest_.cc" line="43" />
<testcase name="Test2" file=".*gtest_list_output_unittest_.cc" line="45" />
</testsuite>
</testsuites>
"""
EXPECTED_JSON = """{
"tests": 2,
"name": "AllTests",
"testsuites": \[
{
"name": "FooTest",
"tests": 2,
"testsuite": \[
{
"name": "Test1",
"file": ".*gtest_list_output_unittest_.cc",
"line": 43
},
{
"name": "Test2",
"file": ".*gtest_list_output_unittest_.cc",
"line": 45
}
\]
}
\]
}
"""
class GTestListTestsOutputUnitTest(gtest_test_utils.TestCase):
"""Unit test for Google Test's list tests with output to file functionality.
"""
def testXml(self):
"""Verifies XML output for listing tests in a Google Test binary.
Runs a test program that generates an empty XML output, and
tests that the XML output is expected.
"""
self._TestOutput('xml', EXPECTED_XML)
def testJSON(self):
"""Verifies XML output for listing tests in a Google Test binary.
Runs a test program that generates an empty XML output, and
tests that the XML output is expected.
"""
self._TestOutput('json', EXPECTED_JSON)
def _GetOutput(self, out_format):
file_path = os.path.join(gtest_test_utils.GetTempDir(),
'test_out.' + out_format)
gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
'gtest_list_output_unittest_')
command = ([
gtest_prog_path,
'%s=%s:%s' % (GTEST_OUTPUT_FLAG, out_format, file_path),
'--gtest_list_tests'
])
environ_copy = os.environ.copy()
p = gtest_test_utils.Subprocess(
command, env=environ_copy, working_dir=gtest_test_utils.GetTempDir())
self.assert_(p.exited)
self.assertEquals(0, p.exit_code)
with open(file_path) as f:
result = f.read()
return result
def _TestOutput(self, test_format, expected_output):
actual = self._GetOutput(test_format)
actual_lines = actual.splitlines()
expected_lines = expected_output.splitlines()
line_count = 0
for actual_line in actual_lines:
expected_line = expected_lines[line_count]
expected_line_re = re.compile(expected_line.strip())
self.assert_(
expected_line_re.match(actual_line.strip()),
('actual output of "%s",\n'
'which does not match expected regex of "%s"\n'
'on line %d' % (actual, expected_output, line_count)))
line_count = line_count + 1
if __name__ == '__main__':
os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
gtest_test_utils.Main()