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from functools import partial
from graphql.validation import UniqueVariableNamesRule
from .harness import assert_validation_errors
assert_errors = partial(assert_validation_errors, UniqueVariableNamesRule)
assert_valid = partial(assert_errors, errors=[])
def describe_validate_unique_variable_names():
def unique_variable_names():
assert_valid(
"""
query A($x: Int, $y: String) { __typename }
query B($x: String, $y: Int) { __typename }
"""
)
def duplicate_variable_names():
assert_errors(
"""
query A($x: Int, $x: Int, $x: String) { __typename }
query B($x: String, $x: Int) { __typename }
query C($x: Int, $x: Int) { __typename }
""",
[
{
"message": "There can be only one variable named '$x'.",
"locations": [(2, 22), (2, 31), (2, 40)],
},
{
"message": "There can be only one variable named '$x'.",
"locations": [(3, 22), (3, 34)],
},
{
"message": "There can be only one variable named '$x'.",
"locations": [(4, 22), (4, 31)],
},
],
)
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