human
Complete this python program:
def _test_one_distribution(module, testcase):
assistant
#Here is the Python program you requested.

    """run the test on one distribution testcase
    * prepare some mock functions to get the testdata in
    * run Facts()
    * compare with the expected output
    """
    def mock_get_file_content(fname, default=None, strip=True):
        'give    fake    content    if    it    exists,    otherwise    pretend    the    file    is    empty'
        data = default
        if (fname in testcase['input']):
            print ('faked    %s    for    %s' % (fname, testcase['name']))
            data = testcase['input'][fname].strip()
        if (strip and (data is not None)):
            data = data.strip()
        return data
    def mock_get_uname_version(module):
        return testcase.get('uname_v', None)
    def mock_file_exists(fname, allow_empty=False):
        if (fname not in testcase['input']):
            return False
        if allow_empty:
            return True
        return bool(len(testcase['input'][fname]))
    def mock_platform_system():
        return testcase.get('platform.system', 'Linux')
    def mock_platform_release():
        return testcase.get('platform.release', '')
    def mock_platform_version():
        return testcase.get('platform.version', '')
    @patch('ansible.module_utils.facts.system.distribution.get_file_content', mock_get_file_content)
    @patch('ansible.module_utils.facts.system.distribution.get_uname_version', mock_get_uname_version)
    @patch('ansible.module_utils.facts.system.distribution._file_exists', mock_file_exists)
    @patch('platform.dist', (lambda : testcase['platform.dist']))
    @patch('platform.system', mock_platform_system)
    @patch('platform.release', mock_platform_release)
    @patch('platform.version', mock_platform_version)
    def get_facts(testcase):
        distro_collector = DistributionFactCollector()
        res = distro_collector.collect(module)
        return res
    generated_facts = get_facts(testcase)
    for (key, val) in testcase['result'].items():
        assert (key in generated_facts)
        msg = ('Comparing    value    of    %s    on    %s,    should:    %s,    is:    %s' % (key, testcase['name'], val, generated_facts[key]))
        assert (generated_facts[key] == val), msg