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bpo-43417: Better buffer handling for ast.unparse (GH-24772)

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Batuhan Taskaya 2021-05-09 02:32:04 +03:00 • committed by GitHub
parent a0bd9e9c11
commit 3d98ececda
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2 changed files with 87 additions and 66 deletions
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35
Lib/test/test_unparse.py
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@ -149,6 +149,27 @@ class UnparseTestCase(ASTTestCase):
# Tests for specific bugs found in earlier versions of unparse
def test_fstrings(self):
self.check_ast_roundtrip("f'a'")
self.check_ast_roundtrip("f'{{}}'")
self.check_ast_roundtrip("f'{{5}}'")
self.check_ast_roundtrip("f'{{5}}5'")
self.check_ast_roundtrip("f'X{{}}X'")
self.check_ast_roundtrip("f'{a}'")
self.check_ast_roundtrip("f'{ {1:2}}'")
self.check_ast_roundtrip("f'a{a}a'")
self.check_ast_roundtrip("f'a{a}{a}a'")
self.check_ast_roundtrip("f'a{a}a{a}a'")
self.check_ast_roundtrip("f'{a!r}x{a!s}12{{}}{a!a}'")
self.check_ast_roundtrip("f'{a:10}'")
self.check_ast_roundtrip("f'{a:100_000{10}}'")
self.check_ast_roundtrip("f'{a!r:10}'")
self.check_ast_roundtrip("f'{a:a{b}10}'")
self.check_ast_roundtrip(
"f'a{b}{c!s}{d!r}{e!a}{f:a}{g:a{b}}{h!s:a}"
"{j!s:{a}b}{k!s:a{b}c}{l!a:{b}c{d}}{x+y=}'"
)
def test_fstrings_special_chars(self):
# See issue 25180
self.check_ast_roundtrip(r"""f'{f"{0}"*3}'""")
self.check_ast_roundtrip(r"""f'{f"{y}"*3}'""")
@ -323,15 +344,13 @@ class UnparseTestCase(ASTTestCase):
def test_invalid_raise(self):
self.check_invalid(ast.Raise(exc=None, cause=ast.Name(id="X")))
def test_invalid_fstring_constant(self):
self.check_invalid(ast.JoinedStr(values=[ast.Constant(value=100)]))
def test_invalid_fstring_conversion(self):
def test_invalid_fstring_value(self):
self.check_invalid(
ast.FormattedValue(
value=ast.Constant(value="a", kind=None),
conversion=ord("Y"), # random character
format_spec=None,
ast.JoinedStr(
values=[
ast.Name(id="test"),
ast.Constant(value="test")
]
)
)