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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 Callable, Optional
import libcst as cst
from libcst import parse_expression
from libcst._nodes.tests.base import CSTNodeTest
from libcst.metadata import CodeRange
from libcst.testing.utils import data_provider
class IfExpTest(CSTNodeTest):
@data_provider(
(
# Simple if experessions
(
cst.IfExp(
body=cst.Name("foo"), test=cst.Name("bar"), orelse=cst.Name("baz")
),
"foo if bar else baz",
),
# Parenthesized if expressions
(
cst.IfExp(
lpar=(cst.LeftParen(),),
body=cst.Name("foo"),
test=cst.Name("bar"),
orelse=cst.Name("baz"),
rpar=(cst.RightParen(),),
),
"(foo if bar else baz)",
),
(
cst.IfExp(
body=cst.Name(
"foo", lpar=(cst.LeftParen(),), rpar=(cst.RightParen(),)
),
whitespace_before_if=cst.SimpleWhitespace(""),
whitespace_after_if=cst.SimpleWhitespace(""),
test=cst.Name(
"bar", lpar=(cst.LeftParen(),), rpar=(cst.RightParen(),)
),
whitespace_before_else=cst.SimpleWhitespace(""),
whitespace_after_else=cst.SimpleWhitespace(""),
orelse=cst.Name(
"baz", lpar=(cst.LeftParen(),), rpar=(cst.RightParen(),)
),
),
"(foo)if(bar)else(baz)",
CodeRange((1, 0), (1, 21)),
),
(
cst.IfExp(
body=cst.Name("foo"),
whitespace_before_if=cst.SimpleWhitespace(" "),
whitespace_after_if=cst.SimpleWhitespace(" "),
test=cst.Name("bar"),
whitespace_before_else=cst.SimpleWhitespace(" "),
whitespace_after_else=cst.SimpleWhitespace(""),
orelse=cst.IfExp(
body=cst.SimpleString("''"),
whitespace_before_if=cst.SimpleWhitespace(""),
test=cst.Name("bar"),
orelse=cst.Name("baz"),
),
),
"foo if bar else''if bar else baz",
CodeRange((1, 0), (1, 32)),
),
(
cst.GeneratorExp(
elt=cst.IfExp(
body=cst.Name("foo"),
test=cst.Name("bar"),
orelse=cst.SimpleString("''"),
whitespace_after_else=cst.SimpleWhitespace(""),
),
for_in=cst.CompFor(
target=cst.Name("_"),
iter=cst.Name("_"),
whitespace_before=cst.SimpleWhitespace(""),
),
),
"(foo if bar else''for _ in _)",
CodeRange((1, 1), (1, 28)),
),
# Make sure that spacing works
(
cst.IfExp(
lpar=(cst.LeftParen(whitespace_after=cst.SimpleWhitespace(" ")),),
body=cst.Name("foo"),
whitespace_before_if=cst.SimpleWhitespace(" "),
whitespace_after_if=cst.SimpleWhitespace(" "),
test=cst.Name("bar"),
whitespace_before_else=cst.SimpleWhitespace(" "),
whitespace_after_else=cst.SimpleWhitespace(" "),
orelse=cst.Name("baz"),
rpar=(cst.RightParen(whitespace_before=cst.SimpleWhitespace(" ")),),
),
"( foo if bar else baz )",
CodeRange((1, 2), (1, 25)),
),
)
)
def test_valid(
self, node: cst.CSTNode, code: str, position: Optional[CodeRange] = None
) -> None:
self.validate_node(node, code, parse_expression, expected_position=position)
@data_provider(
(
(
lambda: cst.IfExp(
cst.Name("bar"),
cst.Name("foo"),
cst.Name("baz"),
lpar=(cst.LeftParen(),),
),
"left paren without right paren",
),
(
lambda: cst.IfExp(
cst.Name("bar"),
cst.Name("foo"),
cst.Name("baz"),
rpar=(cst.RightParen(),),
),
"right paren without left paren",
),
)
)
def test_invalid(
self, get_node: Callable[[], cst.CSTNode], expected_re: str
) -> None:
self.assert_invalid(get_node, expected_re)
|
