diff options
Diffstat (limited to 'lib/spack/external/jsonschema/tests/test_exceptions.py')
-rw-r--r-- | lib/spack/external/jsonschema/tests/test_exceptions.py | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/lib/spack/external/jsonschema/tests/test_exceptions.py b/lib/spack/external/jsonschema/tests/test_exceptions.py new file mode 100644 index 0000000000..9e5793c628 --- /dev/null +++ b/lib/spack/external/jsonschema/tests/test_exceptions.py @@ -0,0 +1,382 @@ +import textwrap + +from jsonschema import Draft4Validator, exceptions +from jsonschema.compat import PY3 +from jsonschema.tests.compat import mock, unittest + + +class TestBestMatch(unittest.TestCase): + def best_match(self, errors): + errors = list(errors) + best = exceptions.best_match(errors) + reversed_best = exceptions.best_match(reversed(errors)) + self.assertEqual( + best, + reversed_best, + msg="Didn't return a consistent best match!\n" + "Got: {0}\n\nThen: {1}".format(best, reversed_best), + ) + return best + + def test_shallower_errors_are_better_matches(self): + validator = Draft4Validator( + { + "properties" : { + "foo" : { + "minProperties" : 2, + "properties" : {"bar" : {"type" : "object"}}, + } + } + } + ) + best = self.best_match(validator.iter_errors({"foo" : {"bar" : []}})) + self.assertEqual(best.validator, "minProperties") + + def test_oneOf_and_anyOf_are_weak_matches(self): + """ + A property you *must* match is probably better than one you have to + match a part of. + + """ + + validator = Draft4Validator( + { + "minProperties" : 2, + "anyOf" : [{"type" : "string"}, {"type" : "number"}], + "oneOf" : [{"type" : "string"}, {"type" : "number"}], + } + ) + best = self.best_match(validator.iter_errors({})) + self.assertEqual(best.validator, "minProperties") + + def test_if_the_most_relevant_error_is_anyOf_it_is_traversed(self): + """ + If the most relevant error is an anyOf, then we traverse its context + and select the otherwise *least* relevant error, since in this case + that means the most specific, deep, error inside the instance. + + I.e. since only one of the schemas must match, we look for the most + relevant one. + + """ + + validator = Draft4Validator( + { + "properties" : { + "foo" : { + "anyOf" : [ + {"type" : "string"}, + {"properties" : {"bar" : {"type" : "array"}}}, + ], + }, + }, + }, + ) + best = self.best_match(validator.iter_errors({"foo" : {"bar" : 12}})) + self.assertEqual(best.validator_value, "array") + + def test_if_the_most_relevant_error_is_oneOf_it_is_traversed(self): + """ + If the most relevant error is an oneOf, then we traverse its context + and select the otherwise *least* relevant error, since in this case + that means the most specific, deep, error inside the instance. + + I.e. since only one of the schemas must match, we look for the most + relevant one. + + """ + + validator = Draft4Validator( + { + "properties" : { + "foo" : { + "oneOf" : [ + {"type" : "string"}, + {"properties" : {"bar" : {"type" : "array"}}}, + ], + }, + }, + }, + ) + best = self.best_match(validator.iter_errors({"foo" : {"bar" : 12}})) + self.assertEqual(best.validator_value, "array") + + def test_if_the_most_relevant_error_is_allOf_it_is_traversed(self): + """ + Now, if the error is allOf, we traverse but select the *most* relevant + error from the context, because all schemas here must match anyways. + + """ + + validator = Draft4Validator( + { + "properties" : { + "foo" : { + "allOf" : [ + {"type" : "string"}, + {"properties" : {"bar" : {"type" : "array"}}}, + ], + }, + }, + }, + ) + best = self.best_match(validator.iter_errors({"foo" : {"bar" : 12}})) + self.assertEqual(best.validator_value, "string") + + def test_nested_context_for_oneOf(self): + validator = Draft4Validator( + { + "properties" : { + "foo" : { + "oneOf" : [ + {"type" : "string"}, + { + "oneOf" : [ + {"type" : "string"}, + { + "properties" : { + "bar" : {"type" : "array"} + }, + }, + ], + }, + ], + }, + }, + }, + ) + best = self.best_match(validator.iter_errors({"foo" : {"bar" : 12}})) + self.assertEqual(best.validator_value, "array") + + def test_one_error(self): + validator = Draft4Validator({"minProperties" : 2}) + error, = validator.iter_errors({}) + self.assertEqual( + exceptions.best_match(validator.iter_errors({})).validator, + "minProperties", + ) + + def test_no_errors(self): + validator = Draft4Validator({}) + self.assertIsNone(exceptions.best_match(validator.iter_errors({}))) + + +class TestByRelevance(unittest.TestCase): + def test_short_paths_are_better_matches(self): + shallow = exceptions.ValidationError("Oh no!", path=["baz"]) + deep = exceptions.ValidationError("Oh yes!", path=["foo", "bar"]) + match = max([shallow, deep], key=exceptions.relevance) + self.assertIs(match, shallow) + + match = max([deep, shallow], key=exceptions.relevance) + self.assertIs(match, shallow) + + def test_global_errors_are_even_better_matches(self): + shallow = exceptions.ValidationError("Oh no!", path=[]) + deep = exceptions.ValidationError("Oh yes!", path=["foo"]) + + errors = sorted([shallow, deep], key=exceptions.relevance) + self.assertEqual( + [list(error.path) for error in errors], + [["foo"], []], + ) + + errors = sorted([deep, shallow], key=exceptions.relevance) + self.assertEqual( + [list(error.path) for error in errors], + [["foo"], []], + ) + + def test_weak_validators_are_lower_priority(self): + weak = exceptions.ValidationError("Oh no!", path=[], validator="a") + normal = exceptions.ValidationError("Oh yes!", path=[], validator="b") + + best_match = exceptions.by_relevance(weak="a") + + match = max([weak, normal], key=best_match) + self.assertIs(match, normal) + + match = max([normal, weak], key=best_match) + self.assertIs(match, normal) + + def test_strong_validators_are_higher_priority(self): + weak = exceptions.ValidationError("Oh no!", path=[], validator="a") + normal = exceptions.ValidationError("Oh yes!", path=[], validator="b") + strong = exceptions.ValidationError("Oh fine!", path=[], validator="c") + + best_match = exceptions.by_relevance(weak="a", strong="c") + + match = max([weak, normal, strong], key=best_match) + self.assertIs(match, strong) + + match = max([strong, normal, weak], key=best_match) + self.assertIs(match, strong) + + +class TestErrorTree(unittest.TestCase): + def test_it_knows_how_many_total_errors_it_contains(self): + errors = [mock.MagicMock() for _ in range(8)] + tree = exceptions.ErrorTree(errors) + self.assertEqual(tree.total_errors, 8) + + def test_it_contains_an_item_if_the_item_had_an_error(self): + errors = [exceptions.ValidationError("a message", path=["bar"])] + tree = exceptions.ErrorTree(errors) + self.assertIn("bar", tree) + + def test_it_does_not_contain_an_item_if_the_item_had_no_error(self): + errors = [exceptions.ValidationError("a message", path=["bar"])] + tree = exceptions.ErrorTree(errors) + self.assertNotIn("foo", tree) + + def test_validators_that_failed_appear_in_errors_dict(self): + error = exceptions.ValidationError("a message", validator="foo") + tree = exceptions.ErrorTree([error]) + self.assertEqual(tree.errors, {"foo" : error}) + + def test_it_creates_a_child_tree_for_each_nested_path(self): + errors = [ + exceptions.ValidationError("a bar message", path=["bar"]), + exceptions.ValidationError("a bar -> 0 message", path=["bar", 0]), + ] + tree = exceptions.ErrorTree(errors) + self.assertIn(0, tree["bar"]) + self.assertNotIn(1, tree["bar"]) + + def test_children_have_their_errors_dicts_built(self): + e1, e2 = ( + exceptions.ValidationError("1", validator="foo", path=["bar", 0]), + exceptions.ValidationError("2", validator="quux", path=["bar", 0]), + ) + tree = exceptions.ErrorTree([e1, e2]) + self.assertEqual(tree["bar"][0].errors, {"foo" : e1, "quux" : e2}) + + def test_it_does_not_contain_subtrees_that_are_not_in_the_instance(self): + error = exceptions.ValidationError("123", validator="foo", instance=[]) + tree = exceptions.ErrorTree([error]) + + with self.assertRaises(IndexError): + tree[0] + + def test_if_its_in_the_tree_anyhow_it_does_not_raise_an_error(self): + """ + If a validator is dumb (like :validator:`required` in draft 3) and + refers to a path that isn't in the instance, the tree still properly + returns a subtree for that path. + + """ + + error = exceptions.ValidationError( + "a message", validator="foo", instance={}, path=["foo"], + ) + tree = exceptions.ErrorTree([error]) + self.assertIsInstance(tree["foo"], exceptions.ErrorTree) + + +class TestErrorReprStr(unittest.TestCase): + def make_error(self, **kwargs): + defaults = dict( + message=u"hello", + validator=u"type", + validator_value=u"string", + instance=5, + schema={u"type": u"string"}, + ) + defaults.update(kwargs) + return exceptions.ValidationError(**defaults) + + def assertShows(self, expected, **kwargs): + if PY3: + expected = expected.replace("u'", "'") + expected = textwrap.dedent(expected).rstrip("\n") + + error = self.make_error(**kwargs) + message_line, _, rest = str(error).partition("\n") + self.assertEqual(message_line, error.message) + self.assertEqual(rest, expected) + + def test_repr(self): + self.assertEqual( + repr(exceptions.ValidationError(message="Hello!")), + "<ValidationError: %r>" % "Hello!", + ) + + def test_unset_error(self): + error = exceptions.ValidationError("message") + self.assertEqual(str(error), "message") + + kwargs = { + "validator": "type", + "validator_value": "string", + "instance": 5, + "schema": {"type": "string"} + } + # Just the message should show if any of the attributes are unset + for attr in kwargs: + k = dict(kwargs) + del k[attr] + error = exceptions.ValidationError("message", **k) + self.assertEqual(str(error), "message") + + def test_empty_paths(self): + self.assertShows( + """ + Failed validating u'type' in schema: + {u'type': u'string'} + + On instance: + 5 + """, + path=[], + schema_path=[], + ) + + def test_one_item_paths(self): + self.assertShows( + """ + Failed validating u'type' in schema: + {u'type': u'string'} + + On instance[0]: + 5 + """, + path=[0], + schema_path=["items"], + ) + + def test_multiple_item_paths(self): + self.assertShows( + """ + Failed validating u'type' in schema[u'items'][0]: + {u'type': u'string'} + + On instance[0][u'a']: + 5 + """, + path=[0, u"a"], + schema_path=[u"items", 0, 1], + ) + + def test_uses_pprint(self): + with mock.patch("pprint.pformat") as pformat: + str(self.make_error()) + self.assertEqual(pformat.call_count, 2) # schema + instance + + def test_str_works_with_instances_having_overriden_eq_operator(self): + """ + Check for https://github.com/Julian/jsonschema/issues/164 which + rendered exceptions unusable when a `ValidationError` involved + instances with an `__eq__` method that returned truthy values. + + """ + + instance = mock.MagicMock() + error = exceptions.ValidationError( + "a message", + validator="foo", + instance=instance, + validator_value="some", + schema="schema", + ) + str(error) + self.assertFalse(instance.__eq__.called) |