def test_to_json_schema_invalid_field():
field = CustomField()
with pytest.raises(ValueError) as exc_info:
to_json_schema(field)
expected = "Cannot convert field type 'CustomField' to JSON Schema"
assert str(exc_info.value) == expected
def test_to_json_schema_complex_regular_expression():
field = typesystem.String(pattern=re.compile("foo", re.IGNORECASE
| re.VERBOSE))
with pytest.raises(ValueError) as exc_info:
to_json_schema(field)
expected = ("Cannot convert regular expression with non-standard flags "
"to JSON schema: RegexFlag.")
assert str(exc_info.value).startswith(expected)
def test_to_from_json_schema(schema, data, is_valid, description):
"""
Test that marshalling to and from JSON schema doens't affect the
behavior of the validation.
Ie. `new_field = from_json_schema(to_json_schema(initial_field))` should
always result in `new_field` having the same behavior as `initial_field`.
"""
validator = from_json_schema(schema)
value_before_convert, error_before_convert = validator.validate_or_error(
data, strict=True)
schema_after = to_json_schema(validator)
validator = from_json_schema(schema_after)
value_after_convert, error_after_convert = validator.validate_or_error(
data, strict=True)
assert error_before_convert == error_after_convert
assert value_before_convert == value_after_convert
def test_schema_to_json_schema():
class BookingSchema(typesystem.Schema):
start_date = typesystem.Date(title="Start date")
end_date = typesystem.Date(title="End date")
room = typesystem.Choice(
title="Room type",
choices=[
("double", "Double room"),
("twin", "Twin room"),
("single", "Single room"),
],
)
include_breakfast = typesystem.Boolean(title="Include breakfast",
default=False)
schema = to_json_schema(BookingSchema)
assert schema == {
"type": "object",
"properties": {
"start_date": {
"type": "string",
"format": "date",
"minLength": 1
},
"end_date": {
"type": "string",
"format": "date",
"minLength": 1
},
"room": {
"enum": ["double", "twin", "single"]
},
"include_breakfast": {
"type": "boolean",
"default": False
},
},
"required": ["start_date", "end_date", "room"],
}