def test_load_from_json_file_not_set():
"""
Return empty configuration if json file is not defined.
"""
metadata = Metadata("foo-bar")
config = load_from_json_file(metadata)
assert_that(config, is_(empty()))
def test_load_from_json_file():
"""
Return configuration from a json file.
"""
metadata = Metadata("foo-bar")
with configfile(dumps(dict(foo="bar"))) as configfile_:
with envvar("FOO_BAR_SETTINGS", configfile_.name):
config = load_from_json_file(metadata)
assert_that(config.foo, is_(equal_to("bar")))