def test_resolve_returns_expected_result_for_nominal_case(self):
empty_dir = tempfile.mkdtemp()
dir_containing_file = tempfile.mkdtemp()
frag1 = "somefile"
self.__create_empty_file(os.path.join(dir_containing_file, frag1))
ret = multipath.resolve([empty_dir, dir_containing_file], frag1)
self.assertEqual(ret, os.path.join(dir_containing_file, frag1))
def resolve(*paths):
"""
Joins `paths` onto each dir in overlay_dirs + workspace dir using `os.path.join` until one of the join results is
found to exist and returns that existent result
:param paths: Path components to join
:return: The first path to be resolved that exists
:raises ValueError: If no overlay dirs are set *and* the workspace dir cannot be established
:raises FileNotFoundError: If no path could be resolved
"""
return multipath.resolve(__get_dirs(), *paths)
def test_resolve_returns_first_existent_path_even_if_other_paths_have_the_subpath(
self):
empty_dir = tempfile.mkdtemp()
first_dir_with_file = tempfile.mkdtemp()
second_dir_with_file = tempfile.mkdtemp()
path = "somefile"
self.__create_empty_file(os.path.join(first_dir_with_file, path))
self.__create_empty_file(os.path.join(second_dir_with_file, path))
ret = multipath.resolve(
[empty_dir, first_dir_with_file, second_dir_with_file], path)
self.assertEqual(ret, os.path.join(first_dir_with_file, path))
def copy_file(self, source, destination):
"""
Copy a file from `source` to `destination`.
:param source: Path to source file. Relative paths are resolved relative to `source_roots` until a path exists.
:param destination: Destination path. Relative paths are resolved relative to `destination_root`
:raises FileNotFoundError if `source` does not exist
:raises FileExistsError if `destination` already exists
"""
source_path = multipath.resolve(self.source_roots(), source)
destination_path = os.path.join(self.destination_root(), destination)
if os.path.exists(destination_path):
raise FileExistsError(
"{destination_path}: already exists: cannot copy {source_path} to this location"
.format(destination_path=destination_path,
source_path=source_path))
shutil.copy(source_path, destination_path)
self.__print_creation(destination)
def test_resolve_raises_ValueError_if_dirs_is_empty(self):
with self.assertRaises(ValueError):
multipath.resolve([], "doesnt", "matter")