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from jsonschema import Draft4Validator, ValidationError, cli
from jsonschema.compat import StringIO
from jsonschema.tests.compat import mock, unittest
def fake_validator(*errors):
errors = list(reversed(errors))
class FakeValidator(object):
def __init__(self, *args, **kwargs):
pass
def iter_errors(self, instance):
if errors:
return errors.pop()
return []
return FakeValidator
class TestParser(unittest.TestCase):
FakeValidator = fake_validator()
def setUp(self):
mock_open = mock.mock_open()
patch_open = mock.patch.object(cli, "open", mock_open, create=True)
patch_open.start()
self.addCleanup(patch_open.stop)
mock_json_load = mock.Mock()
mock_json_load.return_value = {}
patch_json_load = mock.patch("json.load")
patch_json_load.start()
self.addCleanup(patch_json_load.stop)
def test_find_validator_by_fully_qualified_object_name(self):
arguments = cli.parse_args(
[
"--validator",
"jsonschema.tests.test_cli.TestParser.FakeValidator",
"--instance", "foo.json",
"schema.json",
]
)
self.assertIs(arguments["validator"], self.FakeValidator)
def test_find_validator_in_jsonschema(self):
arguments = cli.parse_args(
[
"--validator", "Draft4Validator",
"--instance", "foo.json",
"schema.json",
]
)
self.assertIs(arguments["validator"], Draft4Validator)
class TestCLI(unittest.TestCase):
def test_successful_validation(self):
stdout, stderr = StringIO(), StringIO()
exit_code = cli.run(
{
"validator": fake_validator(),
"schema": {},
"instances": [1],
"error_format": "{error.message}",
},
stdout=stdout,
stderr=stderr,
)
self.assertFalse(stdout.getvalue())
self.assertFalse(stderr.getvalue())
self.assertEqual(exit_code, 0)
def test_unsuccessful_validation(self):
error = ValidationError("I am an error!", instance=1)
stdout, stderr = StringIO(), StringIO()
exit_code = cli.run(
{
"validator": fake_validator([error]),
"schema": {},
"instances": [1],
"error_format": "{error.instance} - {error.message}",
},
stdout=stdout,
stderr=stderr,
)
self.assertFalse(stdout.getvalue())
self.assertEqual(stderr.getvalue(), "1 - I am an error!")
self.assertEqual(exit_code, 1)
def test_unsuccessful_validation_multiple_instances(self):
first_errors = [
ValidationError("9", instance=1),
ValidationError("8", instance=1),
]
second_errors = [ValidationError("7", instance=2)]
stdout, stderr = StringIO(), StringIO()
exit_code = cli.run(
{
"validator": fake_validator(first_errors, second_errors),
"schema": {},
"instances": [1, 2],
"error_format": "{error.instance} - {error.message}\t",
},
stdout=stdout,
stderr=stderr,
)
self.assertFalse(stdout.getvalue())
self.assertEqual(stderr.getvalue(), "1 - 9\t1 - 8\t2 - 7\t")
self.assertEqual(exit_code, 1)