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# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
from typing import Any
import libcst as cst
from libcst._nodes.tests.base import (
CSTNodeTest,
parse_expression_as,
parse_statement_as,
)
from libcst._parser.entrypoints import is_native
from libcst.testing.utils import data_provider
class NamedExprTest(CSTNodeTest):
@data_provider(
(
{
"node": cst.BinaryOperation(
left=cst.Name("a"),
operator=cst.MatrixMultiply(),
right=cst.Name("b"),
),
"code": "a @ b",
"parser": parse_expression_as(python_version="3.8"),
},
{
"node": cst.SimpleStatementLine(
body=(
cst.AugAssign(
target=cst.Name("a"),
operator=cst.MatrixMultiplyAssign(),
value=cst.Name("b"),
),
),
),
"code": "a @= b\n",
"parser": parse_statement_as(python_version="3.8"),
},
)
)
def test_valid(self, **kwargs: Any) -> None:
self.validate_node(**kwargs)
@data_provider(
(
{
"code": "a @ b",
"parser": parse_expression_as(python_version="3.6"),
"expect_success": True,
},
{
"code": "a @ b",
"parser": parse_expression_as(python_version="3.3"),
"expect_success": False,
},
{
"code": "a @= b",
"parser": parse_statement_as(python_version="3.6"),
"expect_success": True,
},
{
"code": "a @= b",
"parser": parse_statement_as(python_version="3.3"),
"expect_success": False,
},
)
)
def test_versions(self, **kwargs: Any) -> None:
if is_native() and not kwargs.get("expect_success", True):
self.skipTest("parse errors are disabled for native parser")
self.assert_parses(**kwargs)
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