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|
from typing import List
from graphql.error import GraphQLError
from graphql.language import parse, Source
from graphql.validation import validate
from .star_wars_schema import star_wars_schema
def validation_errors(query: str) -> List[GraphQLError]:
"""Helper function to test a query and the expected response."""
source = Source(query, "StarWars.graphql")
ast = parse(source)
return validate(star_wars_schema, ast)
def describe_star_wars_validation_tests():
def describe_basic_queries():
def validates_a_complex_but_valid_query():
query = """
query NestedQueryWithFragment {
hero {
...NameAndAppearances
friends {
...NameAndAppearances
friends {
...NameAndAppearances
}
}
}
}
fragment NameAndAppearances on Character {
name
appearsIn
}
"""
assert not validation_errors(query)
def notes_that_non_existent_fields_are_invalid():
query = """
query HeroSpaceshipQuery {
hero {
favoriteSpaceship
}
}
"""
assert validation_errors(query)
def requires_fields_on_object():
query = """
query HeroNoFieldsQuery {
hero
}
"""
assert validation_errors(query)
def disallows_fields_on_scalars():
query = """
query HeroFieldsOnScalarQuery {
hero {
name {
firstCharacterOfName
}
}
}
"""
assert validation_errors(query)
def disallows_object_fields_on_interfaces():
query = """
query DroidFieldOnCharacter {
hero {
name
primaryFunction
}
}
"""
assert validation_errors(query)
def allows_object_fields_in_fragments():
query = """
query DroidFieldInFragment {
hero {
name
...DroidFields
}
}
fragment DroidFields on Droid {
primaryFunction
}
"""
assert not validation_errors(query)
def allows_object_fields_in_inline_fragments():
query = """
query DroidFieldInFragment {
hero {
name
...DroidFields
}
}
fragment DroidFields on Droid {
primaryFunction
}
"""
assert not validation_errors(query)
|
