26   def __init__(self, foo=None, bar=None):  argument
28     self.bar = bar
34     yield self.bar.encode() if self.bar else b''
42                 'bar': self.bar
50   def __init__(self, foo=None, bar=None):  argument
51     super().__init__(foo=foo, bar=bar)
59                 'bar': 'bar'
61         TraceUriResolver.Result(f'simple:foo={self.foo};bar={self.bar}'),
62         TraceUriResolver.Result(SimpleResolver(foo=self.foo, bar=self.bar)),
71     res = registry.resolve('simple:foo=x;bar=y')
77     (foo_res, bar_res) = registry.resolve(['simple:foo=x;bar=y'])
80     resolver = SimpleResolver(foo='x', bar='y')
89      bar_y) = registry.resolve(['simple:foo=a;bar=b', resolver])
90     self._check_resolver_result(foo_a, bar_b, foo='a', bar='b')
97     self._check_resolver_result(foo_res, bar_res, bar=None)
99     (foo_res, bar_res) = registry.resolve('simple:bar=y')
103     self._check_resolver_result(foo_res, bar_res, foo=None, bar=None)
109     res = registry.resolve('recursive:foo=x;bar=y')
116         non_rec_foo, non_rec_bar, foo_metadata='foo', bar_metadata='bar')
121     self.assertEqual(parse_trace_uri('/foo/bar'), (None, '/foo/bar'))
122     self.assertEqual(parse_trace_uri('foo/bar'), (None, 'foo/bar'))
129     self.assertEqual(_args_dict_from_uri('foo:bar=baz'), {
130         'bar': 'baz',
135         _args_dict_from_uri('foo:bar=baz;key=v1,v2'), {
136             'bar': 'baz',
144                              bar='y',  argument
150         tuple(bar_res.generator), (bar.encode() if bar else ''.encode(),))
154             'bar': bar_metadata if bar_metadata else bar