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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 import parse_expression, parse_statement, PartialParserConfig
from libcst._nodes.tests.base import CSTNodeTest
from libcst.metadata import CodeRange
from libcst.testing.utils import data_provider
class AwaitTest(CSTNodeTest):
@data_provider(
(
# Some simple calls
{
"node": cst.Await(cst.Name("test")),
"code": "await test",
"parser": lambda code: parse_expression(
code, config=PartialParserConfig(python_version="3.7")
),
"expected_position": None,
},
{
"node": cst.Await(cst.Call(cst.Name("test"))),
"code": "await test()",
"parser": lambda code: parse_expression(
code, config=PartialParserConfig(python_version="3.7")
),
"expected_position": None,
},
# Whitespace
{
"node": cst.Await(
cst.Name("test"),
whitespace_after_await=cst.SimpleWhitespace(" "),
lpar=(cst.LeftParen(whitespace_after=cst.SimpleWhitespace(" ")),),
rpar=(cst.RightParen(whitespace_before=cst.SimpleWhitespace(" ")),),
),
"code": "( await test )",
"parser": lambda code: parse_expression(
code, config=PartialParserConfig(python_version="3.7")
),
"expected_position": CodeRange((1, 2), (1, 13)),
},
# Whitespace after await
{
"node": cst.Await(
cst.Name("foo", lpar=[cst.LeftParen()], rpar=[cst.RightParen()]),
whitespace_after_await=cst.SimpleWhitespace(""),
),
"code": "await(foo)",
},
)
)
def test_valid_py37(self, **kwargs: Any) -> None:
# We don't have sentinel nodes for atoms, so we know that 100% of atoms
# can be parsed identically to their creation.
self.validate_node(**kwargs)
@data_provider(
(
# Some simple calls
{
"node": cst.FunctionDef(
cst.Name("foo"),
cst.Parameters(),
cst.IndentedBlock(
(
cst.SimpleStatementLine(
(cst.Expr(cst.Await(cst.Name("test"))),)
),
)
),
asynchronous=cst.Asynchronous(),
),
"code": "async def foo():\n await test\n",
"parser": lambda code: parse_statement(
code, config=PartialParserConfig(python_version="3.6")
),
"expected_position": None,
},
{
"node": cst.FunctionDef(
cst.Name("foo"),
cst.Parameters(),
cst.IndentedBlock(
(
cst.SimpleStatementLine(
(cst.Expr(cst.Await(cst.Call(cst.Name("test")))),)
),
)
),
asynchronous=cst.Asynchronous(),
),
"code": "async def foo():\n await test()\n",
"parser": lambda code: parse_statement(
code, config=PartialParserConfig(python_version="3.6")
),
"expected_position": None,
},
# Whitespace
{
"node": cst.FunctionDef(
cst.Name("foo"),
cst.Parameters(),
cst.IndentedBlock(
(
cst.SimpleStatementLine(
(
cst.Expr(
cst.Await(
cst.Name("test"),
whitespace_after_await=cst.SimpleWhitespace(
" "
),
lpar=(
cst.LeftParen(
whitespace_after=cst.SimpleWhitespace(
" "
)
),
),
rpar=(
cst.RightParen(
whitespace_before=cst.SimpleWhitespace(
" "
)
),
),
)
),
)
),
)
),
asynchronous=cst.Asynchronous(),
),
"code": "async def foo():\n ( await test )\n",
"parser": lambda code: parse_statement(
code, config=PartialParserConfig(python_version="3.6")
),
"expected_position": None,
},
)
)
def test_valid_py36(self, **kwargs: Any) -> None:
# We don't have sentinel nodes for atoms, so we know that 100% of atoms
# can be parsed identically to their creation.
self.validate_node(**kwargs)
@data_provider(
(
# Expression wrapping parenthesis rules
{
"get_node": (
lambda: cst.Await(cst.Name("foo"), lpar=(cst.LeftParen(),))
),
"expected_re": "left paren without right paren",
},
{
"get_node": (
lambda: cst.Await(cst.Name("foo"), rpar=(cst.RightParen(),))
),
"expected_re": "right paren without left paren",
},
{
"get_node": (
lambda: cst.Await(
cst.Name("foo"), whitespace_after_await=cst.SimpleWhitespace("")
)
),
"expected_re": "at least one space after await",
},
)
)
def test_invalid(self, **kwargs: Any) -> None:
self.assert_invalid(**kwargs)
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