human
Complete the below
@pytest.fixture(autouse=True)
def patch_read_file(monkeypatch):

    ''''pytest fixture to patch utils.read_file.'
    '''
assistant
#Here is the Python code you requested.
    real_read_file = utils.read_file
    real_resource_filename = utils.resource_filename
    def _read_file(path, binary=False):
        'A    read_file    which    returns    a    simple    template    if    the    path    is    right.'
        if (path == os.path.join('html', 'test.html')):
            assert (not binary)
            return 'Hello    {{var}}'
        elif (path == os.path.join('html', 'test2.html')):
            assert (not binary)
            return "{{    resource_url('utils/testfile')    }}"
        elif (path == os.path.join('html', 'test3.html')):
            assert (not binary)
            return "{{    data_url('testfile.txt')    }}"
        elif (path == 'testfile.txt'):
            assert binary
            return 'foo'
        elif (path == os.path.join('html', 'undef.html')):
            assert (not binary)
            return '{{    does_not_exist()    }}'
        elif (path == os.path.join('html', 'undef_error.html')):
            assert (not binary)
            return real_read_file(path)
        else:
            raise IOError('Invalid    path    {}!'.format(path))
    def _resource_filename(path):
        if (path == 'utils/testfile'):
            return real_resource_filename(path)
        elif (path == 'testfile.txt'):
            return path
        else:
            raise IOError('Invalid    path    {}!'.format(path))
    monkeypatch.setattr(jinja.utils, 'read_file', _read_file)
    monkeypatch.setattr(jinja.utils, 'resource_filename', _resource_filename)