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      1 # Copyright (C) 2012 Google, Inc.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions
      5 # are met:
      6 # 1.  Redistributions of source code must retain the above copyright
      7 #     notice, this list of conditions and the following disclaimer.
      8 # 2.  Redistributions in binary form must reproduce the above copyright
      9 #     notice, this list of conditions and the following disclaimer in the
     10 #     documentation and/or other materials provided with the distribution.
     11 #
     12 # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
     13 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     14 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     15 # DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
     16 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     17 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     18 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     19 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     20 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     21 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     22 
     23 import StringIO
     24 import logging
     25 import sys
     26 import unittest
     27 
     28 from webkitpy.common.system.filesystem import FileSystem
     29 from webkitpy.common.system.executive import Executive
     30 from webkitpy.common.system.outputcapture import OutputCapture
     31 from webkitpy.test.main import Tester
     32 
     33 
     34 STUBS_CLASS = __name__ + ".TestStubs"
     35 
     36 
     37 class TestStubs(unittest.TestCase):
     38     def test_empty(self):
     39         pass
     40 
     41 
     42 class TesterTest(unittest.TestCase):
     43 
     44     def test_no_tests_found(self):
     45         tester = Tester()
     46         errors = StringIO.StringIO()
     47 
     48         # Here we need to remove any existing log handlers so that they
     49         # don't log the messages webkitpy.test while we're testing it.
     50         root_logger = logging.getLogger()
     51         root_handlers = root_logger.handlers
     52         root_logger.handlers = []
     53 
     54         tester.printer.stream = errors
     55         tester.finder.find_names = lambda args, run_all: []
     56         oc = OutputCapture()
     57         orig_argv = sys.argv[:]
     58         try:
     59             sys.argv = sys.argv[0:1]
     60             oc.capture_output()
     61             self.assertFalse(tester.run())
     62         finally:
     63             _, _, logs = oc.restore_output()
     64             root_logger.handlers = root_handlers
     65             sys.argv = orig_argv
     66 
     67         self.assertIn('No tests to run', errors.getvalue())
     68         self.assertIn('No tests to run', logs)
     69 
     70     def _find_test_names(self, args):
     71         tester = Tester()
     72         tester._options, args = tester._parse_args(args)
     73         return tester._test_names(unittest.TestLoader(), args)
     74 
     75     def test_individual_names_are_not_run_twice(self):
     76         args = [STUBS_CLASS + '.test_empty']
     77         tests = self._find_test_names(args)
     78         self.assertEqual(tests, args)
     79 
     80     def test_coverage_works(self):
     81         # This is awkward; by design, running test-webkitpy -c will
     82         # create a .coverage file in Tools/Scripts, so we need to be
     83         # careful not to clobber an existing one, and to clean up.
     84         # FIXME: This design needs to change since it means we can't actually
     85         # run this method itself under coverage properly.
     86         filesystem = FileSystem()
     87         executive = Executive()
     88         module_path = filesystem.path_to_module(self.__module__)
     89         script_dir = module_path[0:module_path.find('webkitpy') - 1]
     90         coverage_file = filesystem.join(script_dir, '.coverage')
     91         coverage_file_orig = None
     92         if filesystem.exists(coverage_file):
     93             coverage_file_orig = coverage_file + '.orig'
     94             filesystem.move(coverage_file, coverage_file_orig)
     95 
     96         try:
     97             proc = executive.popen([sys.executable, filesystem.join(script_dir, 'test-webkitpy'), '-c', STUBS_CLASS + '.test_empty'],
     98                                 stdout=executive.PIPE, stderr=executive.PIPE)
     99             out, _ = proc.communicate()
    100             retcode = proc.returncode
    101             self.assertEqual(retcode, 0)
    102             self.assertIn('Cover', out)
    103         finally:
    104             if coverage_file_orig:
    105                 filesystem.move(coverage_file_orig, coverage_file)
    106             elif filesystem.exists(coverage_file):
    107                 filesystem.remove(coverage_file)
    108