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1from __future__ import absolute_import
2import os
3import sys
4
5import lit.Test
6import lit.TestRunner
7import lit.util
8from .base import TestFormat
9
10kIsWindows = sys.platform in ['win32', 'cygwin']
11
12class GoogleTest(TestFormat):
13    def __init__(self, test_sub_dir, test_suffix):
14        self.test_sub_dir = os.path.normcase(str(test_sub_dir)).split(';')
15        self.test_suffix = str(test_suffix)
16
17        # On Windows, assume tests will also end in '.exe'.
18        if kIsWindows:
19            self.test_suffix += '.exe'
20
21    def getGTestTests(self, path, litConfig, localConfig):
22        """getGTestTests(path) - [name]
23
24        Return the tests available in gtest executable.
25
26        Args:
27          path: String path to a gtest executable
28          litConfig: LitConfig instance
29          localConfig: TestingConfig instance"""
30
31        try:
32            lines = lit.util.capture([path, '--gtest_list_tests'],
33                                     env=localConfig.environment)
34            lines = lines.decode('ascii')
35            if kIsWindows:
36              lines = lines.replace('\r', '')
37            lines = lines.split('\n')
38        except:
39            litConfig.error("unable to discover google-tests in %r" % path)
40            raise StopIteration
41
42        nested_tests = []
43        for ln in lines:
44            if not ln.strip():
45                continue
46
47            prefix = ''
48            index = 0
49            while ln[index*2:index*2+2] == '  ':
50                index += 1
51            while len(nested_tests) > index:
52                nested_tests.pop()
53
54            ln = ln[index*2:]
55            if ln.endswith('.'):
56                nested_tests.append(ln)
57            else:
58                yield ''.join(nested_tests) + ln
59
60    # Note: path_in_suite should not include the executable name.
61    def getTestsInExecutable(self, testSuite, path_in_suite, execpath,
62                             litConfig, localConfig):
63        if not execpath.endswith(self.test_suffix):
64            return
65        (dirname, basename) = os.path.split(execpath)
66        # Discover the tests in this executable.
67        for testname in self.getGTestTests(execpath, litConfig, localConfig):
68            testPath = path_in_suite + (basename, testname)
69            yield lit.Test.Test(testSuite, testPath, localConfig, file_path=execpath)
70
71    def getTestsInDirectory(self, testSuite, path_in_suite,
72                            litConfig, localConfig):
73        source_path = testSuite.getSourcePath(path_in_suite)
74        for filename in os.listdir(source_path):
75            filepath = os.path.join(source_path, filename)
76            if os.path.isdir(filepath):
77                # Iterate over executables in a directory.
78                if not os.path.normcase(filename) in self.test_sub_dir:
79                    continue
80                dirpath_in_suite = path_in_suite + (filename, )
81                for subfilename in os.listdir(filepath):
82                    execpath = os.path.join(filepath, subfilename)
83                    for test in self.getTestsInExecutable(
84                            testSuite, dirpath_in_suite, execpath,
85                            litConfig, localConfig):
86                      yield test
87            elif ('.' in self.test_sub_dir):
88                for test in self.getTestsInExecutable(
89                        testSuite, path_in_suite, filepath,
90                        litConfig, localConfig):
91                    yield test
92
93    def execute(self, test, litConfig):
94        testPath,testName = os.path.split(test.getSourcePath())
95        while not os.path.exists(testPath):
96            # Handle GTest parametrized and typed tests, whose name includes
97            # some '/'s.
98            testPath, namePrefix = os.path.split(testPath)
99            testName = os.path.join(namePrefix, testName)
100
101        cmd = [testPath, '--gtest_filter=' + testName]
102        if litConfig.useValgrind:
103            cmd = litConfig.valgrindArgs + cmd
104
105        if litConfig.noExecute:
106            return lit.Test.PASS, ''
107
108        out, err, exitCode = lit.util.executeCommand(
109            cmd, env=test.config.environment)
110
111        if not exitCode:
112            return lit.Test.PASS,''
113
114        return lit.Test.FAIL, out + err
115