def test_writing_to_yaml(self):
params = Parameters.from_mapping({
"hello":
"world",
"moo": {
"nested_dict": {
"lalala": "fooo",
"meep": 2,
"list": [1, 2, 3]
}
},
"some_path":
Path("/hello/world"),
"path_list": [Path("/meep/lalala"),
Path("/moo/cow")],
})
string_buffer = CharSink.to_string()
YAMLParametersWriter().write(params, string_buffer)
self.assertEqual(TestParameters.WRITING_REFERENCE,
string_buffer.last_string_written)
with self.assertRaisesRegex(
RuntimeError,
"bytes and bytearrays are not legal parameter values"):
YAMLParametersWriter().write(
Parameters.from_mapping({"illegal": b"bytes"}),
CharSink.to_nowhere())
with self.assertRaisesRegex(
RuntimeError,
"bytes and bytearrays are not legal parameter values"):
YAMLParametersWriter().write(
Parameters.from_mapping({"illegal": bytearray()}),
CharSink.to_nowhere())
with self.assertRaisesRegex(
RuntimeError,
"Don't know how to serialize out .* as a parameter value"):
YAMLParametersWriter().write(
Parameters.from_mapping({"illegal": Parameters}),
CharSink.to_nowhere())
def test_null_sink(self):
sink = CharSink.to_nowhere()
sink.write("foo")
with sink.open() as out:
out.write("meep")