def test_boolean_should_be_lowercase(self):
self.assertFalse(is_json('{"bool": True}'))
self.assertFalse(is_json('{"bool": FALSE}'))
self.assertTrue(is_json('{"bool": true}'))
self.assertIsInstance(json.loads('{"bool": true}'), dict)
self.assertTrue(is_json('{"bool": false}'))
self.assertIsInstance(json.loads('{"bool": false}'), dict)
def test_external_spaces_are_ignored(self):
self.assertTrue(is_json('{"foo":"bar"}'))
self.assertTrue(is_json(' { "foo": "bar" } '))
self.assertTrue(is_json('''
{
"foo": "bar"
}
'''))
self.assertTrue(is_json('''
[
1, 2, 3
]
'''))
def test_complete_json_case(self):
string = '''
{
"books": [
{
"title": "Book title 1",
"author": "FirstName LastName",
"tags": ["tech", "programming", "python"],
"available": true,
"pageCount": 516,
"rating": 4.5,
"comments": [
{
"author": "FirstName LastName",
"content": "Nice book!"
}
]
},
{
"title": "Book title 2",
"author": "FirstName LastName",
"tags": ["tech", "programming", "javascript"],
"available": true,
"rating": 4,
"pageCount": 422,
"comments": [
]
}
]
}
'''
self.assertTrue(is_json(string))
self.assertIsInstance(json.loads(string), dict)
def test_array_is_json(self):
self.assertTrue(is_json('[1,2,3]'))
self.assertTrue(is_json('[]'))
self.assertTrue(is_json('["foo", "bar"]'))
self.assertTrue(is_json('[true]'))
self.assertTrue(is_json('[false]'))
self.assertTrue(is_json('[{"a": "b"}]'))
def test_non_string_objects_are_properly_handled(self):
# noinspection PyTypeChecker
self.assertFalse(is_json({'a': 1}))
# noinspection PyTypeChecker
self.assertFalse(is_json(None))
# noinspection PyTypeChecker
self.assertFalse(is_json([1, 2, 3]))
# noinspection PyTypeChecker
self.assertFalse(is_json(500))
# noinspection PyTypeChecker
self.assertFalse(is_json(True))
# noinspection PyTypeChecker
self.assertFalse(is_json({1, 2}))
def test_string_values_should_be_wrapped_by_double_quotes(self):
self.assertFalse(is_json('{"foo": hello}'))
self.assertFalse(is_json('{"foo": \'hello\'}'))
self.assertTrue(is_json('{"foo": "hello"}'))
def test_quotes_should_be_double_quotes(self):
self.assertFalse(is_json("{'foo': 1}"))
self.assertFalse(is_json("['boo', 'bar']"))
def test_cannot_have_multiple_comma_in_array(self):
self.assertFalse(is_json('{"numbers": [1,2,,3]}'))
def test_array_can_be_empty(self):
self.assertTrue(is_json('{"array": []}'))
self.assertTrue(is_json('{"array": [ ]}'))
def test_float_numbers_should_use_dot_as_separator(self):
self.assertFalse(is_json('{"float": 4,5}'))
self.assertTrue(is_json('{"float": 4.5}'))
self.assertIsInstance(json.loads('{"float": 4.5}'), dict)
def test_json_object_can_be_empty(self):
self.assertTrue(is_json('{}'))
def test_empty_string_are_invalid(self):
self.assertFalse(is_json(''))
self.assertFalse(is_json(' '))
def test_string_can_contain_escaped_quotes(self):
s = '{"string": "Look: \\"escaped string here!\\""}'
self.assertTrue(is_json(s))
self.assertIsInstance(json.loads(s), dict)
def test_cannot_have_multiple_comma_in_object(self):
self.assertFalse(is_json('{"numbers": {"a": 1,, "b": 2}}'))
def test_cannot_have_trailing_comma_in_object(self):
self.assertFalse(is_json('{"numbers": {"a": 1, "b": 2,}}'))
def test_null_should_be_lowercase(self):
self.assertFalse(is_json('{"null": NULL}'))
self.assertFalse(is_json('{"null": Null}'))
self.assertTrue(is_json('{"null": null}'))
self.assertIsInstance(json.loads('{"null": null}'), dict)
def test_int_number_can_be_any_length(self):
self.assertTrue(is_json('{"number": 1}'))
self.assertTrue(is_json('{"number": 99}'))
self.assertTrue(is_json('{"number": 1000}'))
self.assertTrue(is_json('{"number": 1234567890}'))
def test_json_array_can_be_empty(self):
self.assertTrue(is_json('[]'))
def test_negative_numbers_should_be_start_with_minus(self):
self.assertFalse(is_json('{"number": - 2}'))
self.assertFalse(is_json('{"number": - 2.5}'))
self.assertTrue(is_json('{"number": -2}'))
self.assertTrue(is_json('{"number": -2.5}'))
def test_attributes_quotes_are_mandatory(self):
self.assertFalse(is_json('{foo: 1}'))
def test_object_can_be_empty(self):
self.assertTrue(is_json('{"obj": {}}'))
self.assertTrue(is_json('{"obj": { }}'))
def test_cannot_have_trailing_comma_in_array(self):
self.assertFalse(is_json('{"numbers": [1,2,3,]}'))