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tests.py
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tests.py
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from __future__ import unicode_literals
from decimal import Decimal
from io import BytesIO
import glob
import os
import re
import sys
import json
if sys.version_info[:2] < (2, 7): # pragma: no cover
from unittest2 import TestCase, skipIf
else:
from unittest import TestCase, skipIf
try:
from unittest import mock
except ImportError:
import mock
from jsonschema import (
PY3, SchemaError, UnknownType, ValidationError, ErrorTree,
Draft3Validator, RefResolver, validate
)
def make_case(schema, data, valid, cls):
def test_case(self):
if valid:
validate(data, schema, cls=cls)
else:
with self.assertRaises(ValidationError):
validate(data, schema, cls=cls)
return test_case
def load_json_cases(test_dir):
def add_test_methods(test_class):
for filename in glob.iglob(os.path.join(test_dir, "*.json")):
validating, _ = os.path.splitext(os.path.basename(filename))
with open(filename) as test_file:
data = json.load(test_file)
for case in data:
for test in case["tests"]:
a_test = make_case(
case["schema"],
test["data"],
test["valid"],
test_class.validator_class,
)
test_name = "test_%s_%s" % (
validating,
re.sub(r"[\W ]+", "_", test["description"]),
)
if not PY3:
test_name = test_name.encode("utf-8")
a_test.__name__ = test_name
setattr(test_class, test_name, a_test)
return test_class
return add_test_methods
class ByteStringMixin(object):
@skipIf(PY3, "The JSON module in Python 3 always produces unicode")
def test_string_a_bytestring_is_a_string(self):
self.validator_class({"type" : "string"}).validate(b"foo")
class DecimalMixin(object):
def test_it_can_validate_with_decimals(self):
schema = {"type" : "number"}
validator = self.validator_class(
schema, types={"number" : (int, float, Decimal)}
)
for valid in [1, 1.1, Decimal(1) / Decimal(8)]:
validator.validate(valid)
for invalid in ["foo", {}, [], True, None]:
with self.assertRaises(ValidationError):
validator.validate(invalid)
class AnyTypeMixin(object):
def test_any_type_is_valid_for_type_any(self):
validator = self.validator_class({"type" : "any"})
validator.validate(mock.Mock())
@load_json_cases(os.path.join(os.path.dirname(__file__), "json/tests/draft3/"))
class TestDraft3(TestCase, ByteStringMixin, DecimalMixin, AnyTypeMixin):
validator_class = Draft3Validator
# TODO: we're in need of more meta schema tests
def test_invalid_properties(self):
with self.assertRaises(SchemaError):
validate({}, {"properties": {"test": True}})
def test_minItems_invalid_string(self):
with self.assertRaises(SchemaError):
validate([1], {"minItems" : "1"}) # needs to be an integer
class TestIterErrors(TestCase):
def setUp(self):
self.validator = Draft3Validator({})
def test_iter_errors(self):
instance = [1, 2]
schema = {
"disallow" : "array",
"enum" : [["a", "b", "c"], ["d", "e", "f"]],
"minItems" : 3
}
got = (str(e) for e in self.validator.iter_errors(instance, schema))
expected = [
"%r is disallowed for [1, 2]" % (schema["disallow"],),
"[1, 2] is too short",
"[1, 2] is not one of %r" % (schema["enum"],),
]
self.assertEqual(sorted(got), sorted(expected))
def test_iter_errors_multiple_failures_one_validator(self):
instance = {"foo" : 2, "bar" : [1], "baz" : 15, "quux" : "spam"}
schema = {
"properties" : {
"foo" : {"type" : "string"},
"bar" : {"minItems" : 2},
"baz" : {"maximum" : 10, "enum" : [2, 4, 6, 8]},
}
}
errors = list(self.validator.iter_errors(instance, schema))
self.assertEqual(len(errors), 4)
class TestValidationErrorMessages(TestCase):
def message_for(self, instance, schema):
with self.assertRaises(ValidationError) as e:
validate(instance, schema)
return e.exception.message
def test_single_type_failure(self):
message = self.message_for(instance=1, schema={"type" : "string"})
self.assertEqual(message, "1 is not of type %r" % "string")
def test_single_type_list_failure(self):
message = self.message_for(instance=1, schema={"type" : ["string"]})
self.assertEqual(message, "1 is not of type %r" % "string")
def test_multiple_type_failure(self):
types = ("string", "object")
message = self.message_for(instance=1, schema={"type" : list(types)})
self.assertEqual(message, "1 is not of type %r, %r" % types)
def test_object_without_title_type_failure(self):
type = {"type" : [{"minimum" : 3}]}
message = self.message_for(instance=1, schema={"type" : [type]})
self.assertEqual(message, "1 is not of type %r" % (type,))
def test_object_with_name_type_failure(self):
name = "Foo"
schema = {"type" : [{"name" : name, "minimum" : 3}]}
message = self.message_for(instance=1, schema=schema)
self.assertEqual(message, "1 is not of type %r" % (name,))
def test_dependencies_failure_has_single_element_not_list(self):
depend, on = "bar", "foo"
schema = {"dependencies" : {depend : on}}
message = self.message_for({"bar" : 2}, schema)
self.assertEqual(message, "%r is a dependency of %r" % (on, depend))
def test_additionalItems_single_failure(self):
message = self.message_for(
[2], {"items" : [], "additionalItems" : False},
)
self.assertIn("(2 was unexpected)", message)
def test_additionalItems_multiple_failures(self):
message = self.message_for(
[1, 2, 3], {"items" : [], "additionalItems" : False}
)
self.assertIn("(1, 2, 3 were unexpected)", message)
def test_additionalProperties_single_failure(self):
additional = "foo"
schema = {"additionalProperties" : False}
message = self.message_for({additional : 2}, schema)
self.assertIn("(%r was unexpected)" % (additional,), message)
def test_additionalProperties_multiple_failures(self):
schema = {"additionalProperties" : False}
message = self.message_for(dict.fromkeys(["foo", "bar"]), schema)
self.assertIn(repr("foo"), message)
self.assertIn(repr("bar"), message)
self.assertIn("were unexpected)", message)
class TestValidationErrorDetails(TestCase):
def setUp(self):
self.validator = Draft3Validator({})
# TODO: These really need unit tests for each individual validator, rather
# than just these higher level tests.
def test_single_nesting(self):
instance = {"foo" : 2, "bar" : [1], "baz" : 15, "quux" : "spam"}
schema = {
"properties" : {
"foo" : {"type" : "string"},
"bar" : {"minItems" : 2},
"baz" : {"maximum" : 10, "enum" : [2, 4, 6, 8]},
}
}
errors = self.validator.iter_errors(instance, schema)
e1, e2, e3, e4 = sorted_errors(errors)
self.assertEqual(e1.path, ["bar"])
self.assertEqual(e2.path, ["baz"])
self.assertEqual(e3.path, ["baz"])
self.assertEqual(e4.path, ["foo"])
self.assertEqual(e1.validator, "minItems")
self.assertEqual(e2.validator, "enum")
self.assertEqual(e3.validator, "maximum")
self.assertEqual(e4.validator, "type")
def test_multiple_nesting(self):
instance = [1, {"foo" : 2, "bar" : {"baz" : [1]}}, "quux"]
schema = {
"type" : "string",
"items" : {
"type" : ["string", "object"],
"properties" : {
"foo" : {"enum" : [1, 3]},
"bar" : {
"type" : "array",
"properties" : {
"bar" : {"required" : True},
"baz" : {"minItems" : 2},
}
}
}
}
}
errors = self.validator.iter_errors(instance, schema)
e1, e2, e3, e4, e5, e6 = sorted_errors(errors)
self.assertEqual(e1.path, [])
self.assertEqual(e2.path, [0])
self.assertEqual(e3.path, ["bar", 1])
self.assertEqual(e4.path, ["bar", "bar", 1])
self.assertEqual(e5.path, ["baz", "bar", 1])
self.assertEqual(e6.path, ["foo", 1])
self.assertEqual(e1.validator, "type")
self.assertEqual(e2.validator, "type")
self.assertEqual(e3.validator, "type")
self.assertEqual(e4.validator, "required")
self.assertEqual(e5.validator, "minItems")
self.assertEqual(e6.validator, "enum")
class TestErrorTree(TestCase):
def setUp(self):
self.validator = Draft3Validator({})
def test_it_knows_how_many_total_errors_it_contains(self):
errors = [mock.MagicMock() for _ in range(8)]
tree = ErrorTree(errors)
self.assertEqual(tree.total_errors, 8)
def test_it_contains_an_item_if_the_item_had_an_error(self):
errors = [ValidationError("a message", path=["bar"])]
tree = ErrorTree(errors)
self.assertIn("bar", tree)
def test_it_does_not_contain_an_item_if_the_item_had_no_error(self):
errors = [ValidationError("a message", path=["bar"])]
tree = ErrorTree(errors)
self.assertNotIn("foo", tree)
def test_validators_that_failed_appear_in_errors_dict(self):
error = ValidationError("a message", validator="foo")
tree = ErrorTree([error])
self.assertEqual(tree.errors, {"foo" : error})
def test_it_creates_a_child_tree_for_each_nested_path(self):
errors = [
ValidationError("a bar message", path=["bar"]),
ValidationError("a bar -> 0 message", path=[0, "bar"]),
]
tree = ErrorTree(errors)
self.assertIn(0, tree["bar"])
self.assertNotIn(1, tree["bar"])
def test_children_have_their_errors_dicts_built(self):
e1, e2 = (
ValidationError("message 1", validator="foo", path=[0, "bar"]),
ValidationError("message 2", validator="quux", path=[0, "bar"]),
)
tree = ErrorTree([e1, e2])
self.assertEqual(tree["bar"][0].errors, {"foo" : e1, "quux" : e2})
class TestDraft3Validator(TestCase):
def setUp(self):
self.instance = mock.Mock()
self.schema = {}
self.resolver = mock.Mock()
self.validator = Draft3Validator(self.schema)
def test_valid_instances_are_valid(self):
errors = iter([])
with mock.patch.object(
self.validator, "iter_errors", return_value=errors,
):
self.assertTrue(
self.validator.is_valid(self.instance, self.schema)
)
def test_invalid_instances_are_not_valid(self):
errors = iter([mock.Mock()])
with mock.patch.object(
self.validator, "iter_errors", return_value=errors,
):
self.assertFalse(
self.validator.is_valid(self.instance, self.schema)
)
def test_non_existent_properties_are_ignored(self):
instance, my_property, my_value = mock.Mock(), mock.Mock(), mock.Mock()
validate(instance=instance, schema={my_property : my_value})
def test_it_creates_a_ref_resolver_if_not_provided(self):
self.assertIsInstance(self.validator.resolver, RefResolver)
def test_it_delegates_to_a_ref_resolver(self):
resolver = mock.Mock()
resolver.resolve.return_value = {"type" : "integer"}
schema = {"$ref" : mock.Mock()}
with self.assertRaises(ValidationError):
Draft3Validator(schema, resolver=resolver).validate(None)
resolver.resolve.assert_called_once_with(schema["$ref"])
def test_is_type_is_true_for_valid_type(self):
self.assertTrue(self.validator.is_type("foo", "string"))
def test_is_type_is_false_for_invalid_type(self):
self.assertFalse(self.validator.is_type("foo", "array"))
def test_is_type_is_true_for_any_type(self):
self.assertTrue(self.validator.is_type(mock.Mock(), "any"))
def test_is_type_evades_bool_inheriting_from_int(self):
self.assertFalse(self.validator.is_type(True, "integer"))
self.assertFalse(self.validator.is_type(True, "number"))
def test_is_type_does_not_evade_bool_if_it_is_being_tested(self):
self.assertTrue(self.validator.is_type(True, "boolean"))
self.assertTrue(self.validator.is_type(True, "any"))
def test_is_type_raises_exception_for_unknown_type(self):
with self.assertRaises(UnknownType):
self.validator.is_type("foo", object())
class TestRefResolver(TestCase):
def setUp(self):
self.base_uri = ""
self.referrer = {}
self.store = {}
self.resolver = RefResolver(self.base_uri, self.referrer, self.store)
def test_it_does_not_retrieve_schema_urls_from_the_network(self):
ref = Draft3Validator.META_SCHEMA["id"]
with mock.patch.object(self.resolver, "resolve_remote") as remote:
resolved = self.resolver.resolve(ref)
self.assertEqual(resolved, Draft3Validator.META_SCHEMA)
self.assertFalse(remote.called)
def test_it_resolves_local_refs(self):
ref = "#/properties/foo"
self.referrer["properties"] = {"foo" : object()}
resolved = self.resolver.resolve(ref)
self.assertEqual(resolved, self.referrer["properties"]["foo"])
def test_it_retrieves_stored_refs(self):
ref = self.resolver.store["cached_ref"] = {"foo" : 12}
resolved = self.resolver.resolve("cached_ref#/foo")
self.assertEqual(resolved, 12)
def test_it_retrieves_unstored_refs_via_urlopen(self):
ref = "http://bar#baz"
schema = {"baz" : 12}
with mock.patch("jsonschema.urlopen") as urlopen:
urlopen.return_value.read.return_value = json.dumps(schema)
resolved = self.resolver.resolve(ref)
self.assertEqual(resolved, 12)
urlopen.assert_called_once_with("http://bar")
def test_it_can_construct_a_base_uri_from_a_schema(self):
schema = {"id" : "foo"}
resolver = RefResolver.from_schema(schema)
self.assertEqual(resolver.base_uri, "foo")
self.assertEqual(resolver.referrer, schema)
def test_it_can_construct_a_base_uri_from_a_schema_without_id(self):
schema = {}
resolver = RefResolver.from_schema(schema)
self.assertEqual(resolver.base_uri, "")
self.assertEqual(resolver.referrer, schema)
def sorted_errors(errors):
def key(error) : return ([str(e) for e in error.path], error.validator)
return sorted(errors, key=key)