#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.

"""Unittest runner for Nova.

To run all tests
    python run_tests.py

To run a single test:
    python run_tests.py test_compute:ComputeTestCase.test_run_terminate

To run a single test module:
    python run_tests.py test_compute

    or

    python run_tests.py api.test_wsgi

"""

import gettext
import os
import unittest
import sys

from nose import config
from nose import result
from nose import core

from nova import log as logging
from nova.tests import fake_flags


class NovaTestResult(result.TextTestResult):
    def __init__(self, *args, **kw):
        result.TextTestResult.__init__(self, *args, **kw)
        self._last_case = None

    def getDescription(self, test):
        return str(test)

    def startTest(self, test):
        unittest.TestResult.startTest(self, test)
        current_case = test.test.__class__.__name__

        if self.showAll:
            if current_case != self._last_case:
                self.stream.writeln(current_case)
                self._last_case = current_case

            self.stream.write(
                '    %s' % str(test.test._testMethodName).ljust(60))
            self.stream.flush()


class NovaTestRunner(core.TextTestRunner):
    def _makeResult(self):
        return NovaTestResult(self.stream,
                              self.descriptions,
                              self.verbosity,
                              self.config)


if __name__ == '__main__':
    logging.setup()
    # If any argument looks like a test name but doesn't have "nova.tests" in
    # front of it, automatically add that so we don't have to type as much
    argv = []
    for x in sys.argv:
        if x.startswith('test_'):
            argv.append('nova.tests.%s' % x)
        else:
            argv.append(x)

    c = config.Config(stream=sys.stdout,
                      env=os.environ,
                      verbosity=3,
                      plugins=core.DefaultPluginManager())

    runner = NovaTestRunner(stream=c.stream,
                            verbosity=c.verbosity,
                            config=c)
    sys.exit(not core.run(config=c, testRunner=runner, argv=argv))