def test_process_args_should_reject_non_existent_input_directory(
self, arg_dict):
"""
If the input directory does not exist, there is no work to be done.
"""
self.use_source_path(arg_dict, 'sample/directory/does/not/exist/')
with pytest.raises(FileNotFoundError):
expand_page.process_args(arg_dict)
def test_process_args_should_reject_non_existent_file(self, arg_dict):
"""
The argument processor should only generate a valid input if the
input file actually exists.
"""
self.use_source_file(
arg_dict, os.path.join(sample.SAMPLE_ROOT, 'does_not_exist.tiff'))
with pytest.raises(FileNotFoundError):
expand_page.process_args(arg_dict)
def test_process_args_should_reject_bad_dimensions(self, arg_dict):
"""
The new dimensions of the input page should both be integer values.
You cannot define the notion of width and height by other means in
terms of pixels.
"""
self.use_dimensions(arg_dict, height="Potato")
with pytest.raises(TypeError):
expand_page.process_args(arg_dict)
def test_process_args(self, arg_dict):
"""
The argument processor should produce a valid instance of
a page action given valid inputs.
"""
action = expand_page.process_args(arg_dict)
# No exception occurred.
assert isinstance(action, expand_page.ExpandPageWithFill)
assert action.width == arg_dict['dimensions'][0]
assert action.height == arg_dict['dimensions'][1]
assert action.source_file == arg_dict['input']
def test_process_args_should_generate_multiple_actions_from_input_directory(
self, arg_dict):
"""
If an input directory exists and has multiple tiff files in it, the
argument processor should find them and pack them together into a
multiple page action.
"""
multi_actions = expand_page.process_args(arg_dict)
source_files = self.get_source_files(arg_dict)
for action in multi_actions.values():
assert isinstance(action, expand_page.ExpandPageWithFill)
assert action.width == arg_dict['dimensions'][0]
assert action.height == arg_dict['dimensions'][1]
assert action.source_file in source_files
def test_expand_page_runner(self, fixture):
action = expand_page.process_args(fixture.arg_dict)
expand_page.Runner.setup(action)
expand_page.Runner.execute(action)
assert os.path.exists(fixture.target_file)