diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py index d063837bae..d555c53fee 100644 --- a/Lib/test/support/__init__.py +++ b/Lib/test/support/__init__.py @@ -12,6 +12,7 @@ import stat import sys import sysconfig +import textwrap import time import types import unittest @@ -619,6 +620,14 @@ def sortdict(dict): withcommas = ", ".join(reprpairs) return "{%s}" % withcommas + +def run_code(code: str) -> dict[str, object]: + """Run a piece of code after dedenting it, and return its global namespace.""" + ns = {} + exec(textwrap.dedent(code), ns) + return ns + + def check_syntax_error(testcase, statement, errtext='', *, lineno=None, offset=None): with testcase.assertRaisesRegex(SyntaxError, errtext) as cm: compile(statement, '', 'exec') diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py index 34808ed856..cf128e1e8c 100644 --- a/Lib/test/test_ast.py +++ b/Lib/test/test_ast.py @@ -181,7 +181,22 @@ def to_tuple(t): "def f(a=1, /, b=2, *, c): pass", "def f(a=1, /, b=2, *, c=4, **kwargs): pass", "def f(a=1, /, b=2, *, c, **kwargs): pass", - + # Type aliases + "type X = int", + "type X[T] = int", + "type X[T, *Ts, **P] = (T, Ts, P)", + "type X[T: int, *Ts, **P] = (T, Ts, P)", + "type X[T: (int, str), *Ts, **P] = (T, Ts, P)", + # Generic classes + "class X[T]: pass", + "class X[T, *Ts, **P]: pass", + "class X[T: int, *Ts, **P]: pass", + "class X[T: (int, str), *Ts, **P]: pass", + # Generic functions + "def f[T](): pass", + "def f[T, *Ts, **P](): pass", + "def f[T: int, *Ts, **P](): pass", + "def f[T: (int, str), *Ts, **P](): pass", ] # These are compiled through "single" @@ -262,7 +277,6 @@ def to_tuple(t): "()", # Combination "a.b.c.d(a.b[1:2])", - ] # TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension @@ -1013,6 +1027,18 @@ def test_exception_groups_feature_version(self): with self.assertRaises(SyntaxError): ast.parse(code, feature_version=(3, 10)) + def test_type_params_feature_version(self): + samples = [ + "type X = int", + "class X[T]: pass", + "def f[T](): pass", + ] + for sample in samples: + with self.subTest(sample): + ast.parse(sample) + with self.assertRaises(SyntaxError): + ast.parse(sample, feature_version=(3, 11)) + def test_invalid_major_feature_version(self): with self.assertRaises(ValueError): ast.parse('pass', feature_version=(2, 7)) @@ -1557,16 +1583,16 @@ def arguments(args=None, posonlyargs=None, vararg=None, def test_funcdef(self): a = ast.arguments([], [], None, [], [], None, []) - f = ast.FunctionDef("x", a, [], [], None) + f = ast.FunctionDef("x", [], a, [], [], None) self.stmt(f, "empty body on FunctionDef") - f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())], + f = ast.FunctionDef("x", [], a, [ast.Pass()], [ast.Name("x", ast.Store())], None) self.stmt(f, "must have Load context") - f = ast.FunctionDef("x", a, [ast.Pass()], [], + f = ast.FunctionDef("x", [], a, [ast.Pass()], [], ast.Name("x", ast.Store())) self.stmt(f, "must have Load context") def fac(args): - return ast.FunctionDef("x", args, [ast.Pass()], [], None) + return ast.FunctionDef("x", [], args, [ast.Pass()], [], None) self._check_arguments(fac, self.stmt) def test_classdef(self): @@ -1579,7 +1605,7 @@ def cls(bases=None, keywords=None, body=None, decorator_list=None): body = [ast.Pass()] if decorator_list is None: decorator_list = [] - return ast.ClassDef("myclass", bases, keywords, + return ast.ClassDef("myclass", [], bases, keywords, body, decorator_list) self.stmt(cls(bases=[ast.Name("x", ast.Store())]), "must have Load context") @@ -2869,23 +2895,23 @@ def main(): exec_results = [ ('Module', [('Expr', (1, 0, 1, 4), ('Constant', (1, 0, 1, 4), None, None))], []), ('Module', [('Expr', (1, 0, 1, 18), ('Constant', (1, 0, 1, 18), 'module docstring', None))], []), -('Module', [('FunctionDef', (1, 0, 1, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (1, 9, 1, 29), ('Constant', (1, 9, 1, 29), 'function docstring', None))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 14), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, []), [('Pass', (1, 10, 1, 14))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 0, None)]), [('Pass', (1, 12, 1, 16))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 18), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 11), 'args', None, None), [], [], None, []), [('Pass', (1, 14, 1, 18))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 23), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 16), 'args', ('Starred', (1, 13, 1, 16), ('Name', (1, 14, 1, 16), 'Ts', ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 19, 1, 23))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Constant', (1, 25, 1, 28), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Starred', (1, 25, 1, 28), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 21), 'f', ('arguments', [], [], None, [], [], ('arg', (1, 8, 1, 14), 'kwargs', None, None), []), [('Pass', (1, 17, 1, 21))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 71), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None), ('arg', (1, 9, 1, 10), 'b', None, None), ('arg', (1, 14, 1, 15), 'c', None, None), ('arg', (1, 22, 1, 23), 'd', None, None), ('arg', (1, 28, 1, 29), 'e', None, None)], ('arg', (1, 35, 1, 39), 'args', None, None), [('arg', (1, 41, 1, 42), 'f', None, None)], [('Constant', (1, 43, 1, 45), 42, None)], ('arg', (1, 49, 1, 55), 'kwargs', None, None), [('Constant', (1, 11, 1, 12), 1, None), ('Constant', (1, 16, 1, 20), None, None), ('List', (1, 24, 1, 26), [], ('Load',)), ('Dict', (1, 30, 1, 32), [], [])]), [('Expr', (1, 58, 1, 71), ('Constant', (1, 58, 1, 71), 'doc for f()', None))], [], None, None)], []), -('Module', [('FunctionDef', (1, 0, 1, 27), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), -('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), -('Module', [('FunctionDef', (1, 0, 1, 45), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), -('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [('Pass', (1, 8, 1, 12))], [])], []), -('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [])], []), -('Module', [('ClassDef', (1, 0, 1, 21), 'C', [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [])], []), -('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Return', (1, 8, 1, 16), ('Constant', (1, 15, 1, 16), 1, None))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 13), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 29), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Expr', (1, 9, 1, 29), ('Constant', (1, 9, 1, 29), 'function docstring', None))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 14), 'f', [], ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, []), [('Pass', (1, 10, 1, 14))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 16), 'f', [], ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 0, None)]), [('Pass', (1, 12, 1, 16))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 18), 'f', [], ('arguments', [], [], ('arg', (1, 7, 1, 11), 'args', None, None), [], [], None, []), [('Pass', (1, 14, 1, 18))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 23), 'f', [], ('arguments', [], [], ('arg', (1, 7, 1, 16), 'args', ('Starred', (1, 13, 1, 16), ('Name', (1, 14, 1, 16), 'Ts', ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 19, 1, 23))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 36), 'f', [], ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Constant', (1, 25, 1, 28), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 36), 'f', [], ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Starred', (1, 25, 1, 28), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 21), 'f', [], ('arguments', [], [], None, [], [], ('arg', (1, 8, 1, 14), 'kwargs', None, None), []), [('Pass', (1, 17, 1, 21))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 71), 'f', [], ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None), ('arg', (1, 9, 1, 10), 'b', None, None), ('arg', (1, 14, 1, 15), 'c', None, None), ('arg', (1, 22, 1, 23), 'd', None, None), ('arg', (1, 28, 1, 29), 'e', None, None)], ('arg', (1, 35, 1, 39), 'args', None, None), [('arg', (1, 41, 1, 42), 'f', None, None)], [('Constant', (1, 43, 1, 45), 42, None)], ('arg', (1, 49, 1, 55), 'kwargs', None, None), [('Constant', (1, 11, 1, 12), 1, None), ('Constant', (1, 16, 1, 20), None, None), ('List', (1, 24, 1, 26), [], ('Load',)), ('Dict', (1, 30, 1, 32), [], [])]), [('Expr', (1, 58, 1, 71), ('Constant', (1, 58, 1, 71), 'doc for f()', None))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 27), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), +('Module', [('FunctionDef', (1, 0, 1, 32), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), +('Module', [('FunctionDef', (1, 0, 1, 45), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []), +('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [], [('Pass', (1, 8, 1, 12))], [])], []), +('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [])], []), +('Module', [('ClassDef', (1, 0, 1, 21), 'C', [], [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [])], []), +('Module', [('FunctionDef', (1, 0, 1, 16), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Return', (1, 8, 1, 16), ('Constant', (1, 15, 1, 16), 1, None))], [], None, None)], []), ('Module', [('Delete', (1, 0, 1, 5), [('Name', (1, 4, 1, 5), 'v', ('Del',))])], []), ('Module', [('Assign', (1, 0, 1, 5), [('Name', (1, 0, 1, 1), 'v', ('Store',))], ('Constant', (1, 4, 1, 5), 1, None), None)], []), ('Module', [('Assign', (1, 0, 1, 7), [('Tuple', (1, 0, 1, 3), [('Name', (1, 0, 1, 1), 'a', ('Store',)), ('Name', (1, 2, 1, 3), 'b', ('Store',))], ('Store',))], ('Name', (1, 6, 1, 7), 'c', ('Load',)), None)], []), @@ -2922,28 +2948,41 @@ def main(): ('Module', [('Expr', (1, 0, 1, 20), ('DictComp', (1, 0, 1, 20), ('Name', (1, 1, 1, 2), 'a', ('Load',)), ('Name', (1, 5, 1, 6), 'b', ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 14), [('Name', (1, 11, 1, 12), 'v', ('Store',)), ('Name', (1, 13, 1, 14), 'w', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'x', ('Load',)), [], 0)]))], []), ('Module', [('Expr', (1, 0, 1, 19), ('SetComp', (1, 0, 1, 19), ('Name', (1, 1, 1, 2), 'r', ('Load',)), [('comprehension', ('Name', (1, 7, 1, 8), 'l', ('Store',)), ('Name', (1, 12, 1, 13), 'x', ('Load',)), [('Name', (1, 17, 1, 18), 'g', ('Load',))], 0)]))], []), ('Module', [('Expr', (1, 0, 1, 16), ('SetComp', (1, 0, 1, 16), ('Name', (1, 1, 1, 2), 'r', ('Load',)), [('comprehension', ('Tuple', (1, 7, 1, 10), [('Name', (1, 7, 1, 8), 'l', ('Store',)), ('Name', (1, 9, 1, 10), 'm', ('Store',))], ('Store',)), ('Name', (1, 14, 1, 15), 'x', ('Load',)), [], 0)]))], []), -('Module', [('AsyncFunctionDef', (1, 0, 3, 18), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (2, 1, 2, 17), ('Constant', (2, 1, 2, 17), 'async function', None)), ('Expr', (3, 1, 3, 18), ('Await', (3, 1, 3, 18), ('Call', (3, 7, 3, 18), ('Name', (3, 7, 3, 16), 'something', ('Load',)), [], [])))], [], None, None)], []), -('Module', [('AsyncFunctionDef', (1, 0, 3, 8), 'f', ('arguments', [], [], None, [], [], None, []), [('AsyncFor', (2, 1, 3, 8), ('Name', (2, 11, 2, 12), 'e', ('Store',)), ('Name', (2, 16, 2, 17), 'i', ('Load',)), [('Expr', (2, 19, 2, 20), ('Constant', (2, 19, 2, 20), 1, None))], [('Expr', (3, 7, 3, 8), ('Constant', (3, 7, 3, 8), 2, None))], None)], [], None, None)], []), -('Module', [('AsyncFunctionDef', (1, 0, 2, 21), 'f', ('arguments', [], [], None, [], [], None, []), [('AsyncWith', (2, 1, 2, 21), [('withitem', ('Name', (2, 12, 2, 13), 'a', ('Load',)), ('Name', (2, 17, 2, 18), 'b', ('Store',)))], [('Expr', (2, 20, 2, 21), ('Constant', (2, 20, 2, 21), 1, None))], None)], [], None, None)], []), +('Module', [('AsyncFunctionDef', (1, 0, 3, 18), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Expr', (2, 1, 2, 17), ('Constant', (2, 1, 2, 17), 'async function', None)), ('Expr', (3, 1, 3, 18), ('Await', (3, 1, 3, 18), ('Call', (3, 7, 3, 18), ('Name', (3, 7, 3, 16), 'something', ('Load',)), [], [])))], [], None, None)], []), +('Module', [('AsyncFunctionDef', (1, 0, 3, 8), 'f', [], ('arguments', [], [], None, [], [], None, []), [('AsyncFor', (2, 1, 3, 8), ('Name', (2, 11, 2, 12), 'e', ('Store',)), ('Name', (2, 16, 2, 17), 'i', ('Load',)), [('Expr', (2, 19, 2, 20), ('Constant', (2, 19, 2, 20), 1, None))], [('Expr', (3, 7, 3, 8), ('Constant', (3, 7, 3, 8), 2, None))], None)], [], None, None)], []), +('Module', [('AsyncFunctionDef', (1, 0, 2, 21), 'f', [], ('arguments', [], [], None, [], [], None, []), [('AsyncWith', (2, 1, 2, 21), [('withitem', ('Name', (2, 12, 2, 13), 'a', ('Load',)), ('Name', (2, 17, 2, 18), 'b', ('Store',)))], [('Expr', (2, 20, 2, 21), ('Constant', (2, 20, 2, 21), 1, None))], None)], [], None, None)], []), ('Module', [('Expr', (1, 0, 1, 14), ('Dict', (1, 0, 1, 14), [None, ('Constant', (1, 10, 1, 11), 2, None)], [('Dict', (1, 3, 1, 8), [('Constant', (1, 4, 1, 5), 1, None)], [('Constant', (1, 6, 1, 7), 2, None)]), ('Constant', (1, 12, 1, 13), 3, None)]))], []), ('Module', [('Expr', (1, 0, 1, 12), ('Set', (1, 0, 1, 12), [('Starred', (1, 1, 1, 8), ('Set', (1, 2, 1, 8), [('Constant', (1, 3, 1, 4), 1, None), ('Constant', (1, 6, 1, 7), 2, None)]), ('Load',)), ('Constant', (1, 10, 1, 11), 3, None)]))], []), -('Module', [('AsyncFunctionDef', (1, 0, 2, 21), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (2, 1, 2, 21), ('ListComp', (2, 1, 2, 21), ('Name', (2, 2, 2, 3), 'i', ('Load',)), [('comprehension', ('Name', (2, 14, 2, 15), 'b', ('Store',)), ('Name', (2, 19, 2, 20), 'c', ('Load',)), [], 1)]))], [], None, None)], []), -('Module', [('FunctionDef', (4, 0, 4, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (4, 9, 4, 13))], [('Name', (1, 1, 1, 6), 'deco1', ('Load',)), ('Call', (2, 1, 2, 8), ('Name', (2, 1, 2, 6), 'deco2', ('Load',)), [], []), ('Call', (3, 1, 3, 9), ('Name', (3, 1, 3, 6), 'deco3', ('Load',)), [('Constant', (3, 7, 3, 8), 1, None)], [])], None, None)], []), -('Module', [('AsyncFunctionDef', (4, 0, 4, 19), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (4, 15, 4, 19))], [('Name', (1, 1, 1, 6), 'deco1', ('Load',)), ('Call', (2, 1, 2, 8), ('Name', (2, 1, 2, 6), 'deco2', ('Load',)), [], []), ('Call', (3, 1, 3, 9), ('Name', (3, 1, 3, 6), 'deco3', ('Load',)), [('Constant', (3, 7, 3, 8), 1, None)], [])], None, None)], []), -('Module', [('ClassDef', (4, 0, 4, 13), 'C', [], [], [('Pass', (4, 9, 4, 13))], [('Name', (1, 1, 1, 6), 'deco1', ('Load',)), ('Call', (2, 1, 2, 8), ('Name', (2, 1, 2, 6), 'deco2', ('Load',)), [], []), ('Call', (3, 1, 3, 9), ('Name', (3, 1, 3, 6), 'deco3', ('Load',)), [('Constant', (3, 7, 3, 8), 1, None)], [])])], []), -('Module', [('FunctionDef', (2, 0, 2, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (2, 9, 2, 13))], [('Call', (1, 1, 1, 19), ('Name', (1, 1, 1, 5), 'deco', ('Load',)), [('GeneratorExp', (1, 5, 1, 19), ('Name', (1, 6, 1, 7), 'a', ('Load',)), [('comprehension', ('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 17, 1, 18), 'b', ('Load',)), [], 0)])], [])], None, None)], []), -('Module', [('FunctionDef', (2, 0, 2, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (2, 9, 2, 13))], [('Attribute', (1, 1, 1, 6), ('Attribute', (1, 1, 1, 4), ('Name', (1, 1, 1, 2), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',))], None, None)], []), +('Module', [('AsyncFunctionDef', (1, 0, 2, 21), 'f', [], ('arguments', [], [], None, [], [], None, []), [('Expr', (2, 1, 2, 21), ('ListComp', (2, 1, 2, 21), ('Name', (2, 2, 2, 3), 'i', ('Load',)), [('comprehension', ('Name', (2, 14, 2, 15), 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16, 1, 17), 2, None), ('Constant', (1, 21, 1, 22), 4, None)]), [('Pass', (1, 25, 1, 29))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 32), 'f', [], ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [('Constant', (1, 24, 1, 25), 4, None)], None, [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 28, 1, 32))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 30), 'f', [], ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [None], None, [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 26, 1, 30))], [], None, None)], []), +('Module', [('FunctionDef', (1, 0, 1, 42), 'f', [], ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, 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'T', ('Tuple', (1, 9, 1, 19), [('Name', (1, 10, 1, 13), 'int', ('Load',)), ('Name', (1, 15, 1, 18), 'str', ('Load',))], ('Load',))), ('TypeVarTuple', (1, 21, 1, 24), 'Ts'), ('ParamSpec', (1, 26, 1, 29), 'P')], ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 34, 1, 38))], [], None, None)], []), ] single_results = [ ('Interactive', [('Expr', (1, 0, 1, 3), ('BinOp', (1, 0, 1, 3), ('Constant', (1, 0, 1, 1), 1, None), ('Add',), ('Constant', (1, 2, 1, 3), 2, None)))]), diff --git a/Lib/test/test_keyword.py b/Lib/test/test_keyword.py index f329f88fa0..858e5de3b9 100644 --- a/Lib/test/test_keyword.py +++ b/Lib/test/test_keyword.py @@ -39,7 +39,8 @@ def test_async_and_await_are_keywords(self): self.assertIn("async", keyword.kwlist) self.assertIn("await", keyword.kwlist) - def test_match_and_case_are_soft_keywords(self): + def test_soft_keywords(self): + self.assertIn("type", keyword.softkwlist) self.assertIn("match", keyword.softkwlist) self.assertIn("case", keyword.softkwlist) self.assertIn("_", keyword.softkwlist) diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py index e1db450bf8..d81501f6f1 100644 --- a/Lib/test/test_sys.py +++ b/Lib/test/test_sys.py @@ -1449,7 +1449,7 @@ def func(): check(x, size('3Pi3c7P2ic??2P')) # function def func(): pass - check(func, size('14Pi')) + check(func, size('15Pi')) class c(): @staticmethod def foo(): diff --git a/Lib/test/test_type_aliases.py b/Lib/test/test_type_aliases.py new file mode 100644 index 0000000..efec4db --- /dev/null +++ b/Lib/test/test_type_aliases.py @@ -0,0 +1,204 @@ +import types +import unittest +from test.support import check_syntax_error, run_code + +from typing import Callable, TypeAliasType, TypeVar, get_args + + +class TypeParamsInvalidTest(unittest.TestCase): + def test_name_collision_01(self): + check_syntax_error(self, """type TA1[A, **A] = None""") + + def test_name_non_collision_02(self): + ns = run_code("""type TA1[A] = lambda A: A""") + self.assertIsInstance(ns["TA1"], TypeAliasType) + self.assertTrue(callable(ns["TA1"].__value__)) + self.assertEqual("arg", ns["TA1"].__value__("arg")) + + def test_name_non_collision_03(self): + ns = run_code(""" + class Outer[A]: + type TA1[A] = None + """ + ) + outer_A, = ns["Outer"].__type_params__ + inner_A, = ns["Outer"].TA1.__type_params__ + self.assertIsNot(outer_A, inner_A) + + +class TypeParamsAccessTest(unittest.TestCase): + def test_alias_access_01(self): + ns = run_code("type TA1[A, B] = dict[A, B]") + alias = ns["TA1"] + self.assertIsInstance(alias, TypeAliasType) + self.assertEqual(alias.__type_params__, get_args(alias.__value__)) + + def test_alias_access_02(self): + ns = run_code(""" + type TA1[A, B] = TA1[A, B] | int + """ + ) + alias = ns["TA1"] + self.assertIsInstance(alias, TypeAliasType) + A, B = alias.__type_params__ + self.assertEqual(alias.__value__, alias[A, B] | int) + + def test_alias_access_03(self): + ns = run_code(""" + class Outer[A]: + def inner[B](self): + type TA1[C] = TA1[A, B] | int + return TA1 + """ + ) + cls = ns["Outer"] + A, = cls.__type_params__ + B, = cls.inner.__type_params__ + alias = cls.inner(None) + self.assertIsInstance(alias, TypeAliasType) + alias2 = cls.inner(None) + self.assertIsNot(alias, alias2) + self.assertEqual(len(alias.__type_params__), 1) + + self.assertEqual(alias.__value__, alias[A, B] | int) + + +class TypeParamsAliasValueTest(unittest.TestCase): + def test_alias_value_01(self): + type TA1 = int + + self.assertIsInstance(TA1, TypeAliasType) + self.assertEqual(TA1.__value__, int) + self.assertEqual(TA1.__parameters__, ()) + self.assertEqual(TA1.__type_params__, ()) + + type TA2 = TA1 | str + + self.assertIsInstance(TA2, TypeAliasType) + a, b = TA2.__value__.__args__ + self.assertEqual(a, TA1) + self.assertEqual(b, str) + self.assertEqual(TA2.__parameters__, ()) + self.assertEqual(TA2.__type_params__, ()) + + def test_alias_value_02(self): + class Parent[A]: + type TA1[B] = dict[A, B] + + self.assertIsInstance(Parent.TA1, TypeAliasType) + self.assertEqual(len(Parent.TA1.__parameters__), 1) + self.assertEqual(len(Parent.__parameters__), 1) + a, = Parent.__parameters__ + b, = Parent.TA1.__parameters__ + self.assertEqual(Parent.__type_params__, (a,)) + self.assertEqual(Parent.TA1.__type_params__, (b,)) + self.assertEqual(Parent.TA1.__value__, dict[a, b]) + + def test_alias_value_03(self): + def outer[A](): + type TA1[B] = dict[A, B] + return TA1 + + o = outer() + self.assertIsInstance(o, TypeAliasType) + self.assertEqual(len(o.__parameters__), 1) + self.assertEqual(len(outer.__type_params__), 1) + b = o.__parameters__[0] + self.assertEqual(o.__type_params__, (b,)) + + def test_alias_value_04(self): + def more_generic[T, *Ts, **P](): + type TA[T2, *Ts2, **P2] = tuple[Callable[P, tuple[T, *Ts]], Callable[P2, tuple[T2, *Ts2]]] + return TA + + alias = more_generic() + self.assertIsInstance(alias, TypeAliasType) + T2, Ts2, P2 = alias.__type_params__ + self.assertEqual(alias.__parameters__, (T2, *Ts2, P2)) + T, Ts, P = more_generic.__type_params__ + self.assertEqual(alias.__value__, tuple[Callable[P, tuple[T, *Ts]], Callable[P2, tuple[T2, *Ts2]]]) + + def test_subscripting(self): + type NonGeneric = int + type Generic[A] = dict[A, A] + type VeryGeneric[T, *Ts, **P] = Callable[P, tuple[T, *Ts]] + + with self.assertRaises(TypeError): + NonGeneric[int] + + specialized = Generic[int] + self.assertIsInstance(specialized, types.GenericAlias) + self.assertIs(specialized.__origin__, Generic) + self.assertEqual(specialized.__args__, (int,)) + + specialized2 = VeryGeneric[int, str, float, [bool, range]] + self.assertIsInstance(specialized2, types.GenericAlias) + self.assertIs(specialized2.__origin__, VeryGeneric) + self.assertEqual(specialized2.__args__, (int, str, float, [bool, range])) + + def test_repr(self): + type Simple = int + self.assertEqual(repr(Simple), "Simple") + + def test_recursive_repr(self): + type Recursive = Recursive + self.assertEqual(repr(Recursive), "Recursive") + + type X = list[Y] + type Y = list[X] + self.assertEqual(repr(X), "X") + + +class TypeAliasConstructorTest(unittest.TestCase): + def test_basic(self): + TA = TypeAliasType("TA", int) + self.assertEqual(TA.__name__, "TA") + self.assertIs(TA.__value__, int) + self.assertEqual(TA.__type_params__, ()) + + def test_generic(self): + T = TypeVar("T") + TA = TypeAliasType("TA", list[T], type_params=(T,)) + self.assertEqual(TA.__name__, "TA") + self.assertEqual(TA.__value__, list[T]) + self.assertEqual(TA.__type_params__, (T,)) + + def test_keywords(self): + TA = TypeAliasType(name="TA", value=int) + self.assertEqual(TA.__name__, "TA") + self.assertIs(TA.__value__, int) + self.assertEqual(TA.__type_params__, ()) + + def test_errors(self): + with self.assertRaises(TypeError): + TypeAliasType() + with self.assertRaises(TypeError): + TypeAliasType("TA") + with self.assertRaises(TypeError): + TypeAliasType("TA", list, ()) + with self.assertRaises(TypeError): + TypeAliasType("TA", list, type_params=42) + + +class TypeAliasTypeTest(unittest.TestCase): + def test_immutable(self): + with self.assertRaises(TypeError): + TypeAliasType.whatever = "not allowed" + + def test_no_subclassing(self): + with self.assertRaisesRegex(TypeError, "not an acceptable base type"): + class MyAlias(TypeAliasType): + pass + + def test_union(self): + type Alias1 = int + type Alias2 = str + union = Alias1 | Alias2 + self.assertIsInstance(union, types.UnionType) + self.assertEqual(get_args(union), (Alias1, Alias2)) + union2 = Alias1 | list[float] + self.assertIsInstance(union2, types.UnionType) + self.assertEqual(get_args(union2), (Alias1, list[float])) + union3 = list[range] | Alias1 + self.assertIsInstance(union3, types.UnionType) + self.assertEqual(get_args(union3), (list[range], Alias1)) diff --git a/Lib/test/test_type_params.py b/Lib/test/test_type_params.py new file mode 100644 index 0000000..4ae9841 --- /dev/null +++ b/Lib/test/test_type_params.py @@ -0,0 +1,847 @@ +import asyncio +import textwrap +import types +import unittest +from test.support import requires_working_socket, check_syntax_error, run_code + +from typing import Generic, Sequence, TypeVar, TypeVarTuple, ParamSpec, get_args + + +class TypeParamsInvalidTest(unittest.TestCase): + def test_name_collision_01(self): + check_syntax_error(self, """def func[**A, A](): ...""") + + def test_name_non_collision_02(self): + ns = run_code("""def func[A](A): return A""") + func = ns["func"] + self.assertEqual(func(1), 1) + A, = func.__type_params__ + self.assertEqual(A.__name__, "A") + + def test_name_non_collision_03(self): + ns = run_code("""def func[A](*A): return A""") + func = ns["func"] + self.assertEqual(func(1), (1,)) + A, = func.__type_params__ + self.assertEqual(A.__name__, "A") + + def test_name_non_collision_04(self): + # Mangled names should not cause a conflict. + ns = run_code(""" + class ClassA: + def func[__A](self, __A): return __A + """ + ) + cls = ns["ClassA"] + self.assertEqual(cls().func(1), 1) + A, = cls.func.__type_params__ + self.assertEqual(A.__name__, "__A") + + def test_name_non_collision_05(self): + ns = run_code(""" + class ClassA: + def func[_ClassA__A](self, __A): return __A + """ + ) + cls = ns["ClassA"] + self.assertEqual(cls().func(1), 1) + A, = cls.func.__type_params__ + self.assertEqual(A.__name__, "_ClassA__A") + + def test_name_non_collision_06(self): + ns = run_code(""" + class ClassA[X]: + def func(self, X): return X + """ + ) + cls = ns["ClassA"] + self.assertEqual(cls().func(1), 1) + X, = cls.__type_params__ + self.assertEqual(X.__name__, "X") + + def test_name_non_collision_07(self): + ns = run_code(""" + class ClassA[X]: + def func(self): + X = 1 + return X + """ + ) + cls = ns["ClassA"] + self.assertEqual(cls().func(), 1) + X, = cls.__type_params__ + self.assertEqual(X.__name__, "X") + + def test_name_non_collision_08(self): + ns = run_code(""" + class ClassA[X]: + def func(self): + return [X for X in [1, 2]] + """ + ) + cls = ns["ClassA"] + self.assertEqual(cls().func(), [1, 2]) + X, = cls.__type_params__ + self.assertEqual(X.__name__, "X") + + def test_name_non_collision_9(self): + ns = run_code(""" + class ClassA[X]: + def func[X](self): + ... + """ + ) + cls = ns["ClassA"] + outer_X, = cls.__type_params__ + inner_X, = cls.func.__type_params__ + self.assertEqual(outer_X.__name__, "X") + self.assertEqual(inner_X.__name__, "X") + self.assertIsNot(outer_X, inner_X) + + def test_name_non_collision_10(self): + ns = run_code(""" + class ClassA[X]: + X: int + """ + ) + cls = ns["ClassA"] + X, = cls.__type_params__ + self.assertEqual(X.__name__, "X") + self.assertIs(cls.__annotations__["X"], int) + + def test_name_non_collision_13(self): + ns = run_code(""" + X = 1 + def outer(): + def inner[X](): + global X + X = 2 + return inner + """ + ) + self.assertEqual(ns["X"], 1) + outer = ns["outer"] + outer()() + self.assertEqual(ns["X"], 2) + + def test_disallowed_expressions(self): + check_syntax_error(self, "type X = (yield)") + check_syntax_error(self, "type X = (yield from x)") + check_syntax_error(self, "type X = (await 42)") + check_syntax_error(self, "async def f(): type X = (yield)") + check_syntax_error(self, "type X = (y := 3)") + check_syntax_error(self, "class X[T: (yield)]: pass") + check_syntax_error(self, "class X[T: (yield from x)]: pass") + check_syntax_error(self, "class X[T: (await 42)]: pass") + check_syntax_error(self, "class X[T: (y := 3)]: pass") + check_syntax_error(self, "class X[T](y := Sequence[T]): pass") + check_syntax_error(self, "def f[T](y: (x := Sequence[T])): pass") + + +class TypeParamsNonlocalTest(unittest.TestCase): + def test_nonlocal_disallowed_01(self): + code = """ + def outer(): + X = 1 + def inner[X](): + nonlocal X + return X + """ + check_syntax_error(self, code) + + def test_nonlocal_disallowed_02(self): + code = """ + def outer2[T](): + def inner1(): + nonlocal T + """ + check_syntax_error(self, textwrap.dedent(code)) + + def test_nonlocal_disallowed_03(self): + code = """ + class Cls[T]: + nonlocal T + """ + check_syntax_error(self, textwrap.dedent(code)) + + def test_nonlocal_allowed(self): + code = """ + def func[T](): + T = "func" + def inner(): + nonlocal T + T = "inner" + inner() + assert T == "inner" + """ + ns = run_code(code) + func = ns["func"] + T, = func.__type_params__ + self.assertEqual(T.__name__, "T") + + +class TypeParamsAccessTest(unittest.TestCase): + def test_class_access_01(self): + ns = run_code(""" + class ClassA[A, B](dict[A, B]): + ... + """ + ) + cls = ns["ClassA"] + A, B = cls.__type_params__ + self.assertEqual(types.get_original_bases(cls), (dict[A, B], Generic[A, B])) + + def test_class_access_02(self): + ns = run_code(""" + class MyMeta[A, B](type): ... + class ClassA[A, B](metaclass=MyMeta[A, B]): + ... + """ + ) + meta = ns["MyMeta"] + cls = ns["ClassA"] + A1, B1 = meta.__type_params__ + A2, B2 = cls.__type_params__ + self.assertIsNot(A1, A2) + self.assertIsNot(B1, B2) + self.assertIs(type(cls), meta) + + def test_class_access_03(self): + code = """ + def my_decorator(a): + ... + @my_decorator(A) + class ClassA[A, B](): + ... + """ + + with self.assertRaisesRegex(NameError, "name 'A' is not defined"): + run_code(code) + + def test_function_access_01(self): + ns = run_code(""" + def func[A, B](a: dict[A, B]): + ... + """ + ) + func = ns["func"] + A, B = func.__type_params__ + self.assertEqual(func.__annotations__["a"], dict[A, B]) + + def test_function_access_02(self): + code = """ + def func[A](a = list[A]()): + ... + """ + + with self.assertRaisesRegex(NameError, "name 'A' is not defined"): + run_code(code) + + def test_function_access_03(self): + code = """ + def my_decorator(a): + ... + @my_decorator(A) + def func[A](): + ... + """ + + with self.assertRaisesRegex(NameError, "name 'A' is not defined"): + run_code(code) + + def test_method_access_01(self): + ns = run_code(""" + class ClassA: + x = int + def func[T](self, a: x, b: T): + ... + """ + ) + cls = ns["ClassA"] + self.assertIs(cls.func.__annotations__["a"], int) + T, = cls.func.__type_params__ + self.assertIs(cls.func.__annotations__["b"], T) + + def test_nested_access_01(self): + ns = run_code(""" + class ClassA[A]: + def funcB[B](self): + class ClassC[C]: + def funcD[D](self): + return lambda: (A, B, C, D) + return ClassC + """ + ) + cls = ns["ClassA"] + A, = cls.__type_params__ + B, = cls.funcB.__type_params__ + classC = cls().funcB() + C, = classC.__type_params__ + D, = classC.funcD.__type_params__ + self.assertEqual(classC().funcD()(), (A, B, C, D)) + + def test_out_of_scope_01(self): + code = """ + class ClassA[T]: ... + x = T + """ + + with self.assertRaisesRegex(NameError, "name 'T' is not defined"): + run_code(code) + + def test_out_of_scope_02(self): + code = """ + class ClassA[A]: + def funcB[B](self): ... + + x = B + """ + + with self.assertRaisesRegex(NameError, "name 'B' is not defined"): + run_code(code) + + def test_class_scope_interaction_01(self): + ns = run_code(""" + class C: + x = 1 + def method[T](self, arg: x): pass + """) + cls = ns["C"] + self.assertEqual(cls.method.__annotations__["arg"], 1) + + def test_class_scope_interaction_02(self): + ns = run_code(""" + class C: + class Base: pass + class Child[T](Base): pass + """) + cls = ns["C"] + self.assertEqual(cls.Child.__bases__, (cls.Base, Generic)) + T, = cls.Child.__type_params__ + self.assertEqual(types.get_original_bases(cls.Child), (cls.Base, Generic[T])) + + def test_class_deref(self): + ns = run_code(""" + class C[T]: + T = "class" + type Alias = T + """) + cls = ns["C"] + self.assertEqual(cls.Alias.__value__, "class") + + def test_shadowing_nonlocal(self): + ns = run_code(""" + def outer[T](): + T = "outer" + def inner(): + nonlocal T + T = "inner" + return T + return lambda: T, inner + """) + outer = ns["outer"] + T, = outer.__type_params__ + self.assertEqual(T.__name__, "T") + getter, inner = outer() + self.assertEqual(getter(), "outer") + self.assertEqual(inner(), "inner") + self.assertEqual(getter(), "inner") + + def test_reference_previous_typevar(self): + def func[S, T: Sequence[S]](): + pass + + S, T = func.__type_params__ + self.assertEqual(T.__bound__, Sequence[S]) + + def test_super(self): + class Base: + def meth(self): + return "base" + + class Child(Base): + # Having int in the annotation ensures the class gets cells for both + # __class__ and __classdict__ + def meth[T](self, arg: int) -> T: + return super().meth() + "child" + + c = Child() + self.assertEqual(c.meth(1), "basechild") + + def test_type_alias_containing_lambda(self): + type Alias[T] = lambda: T + T, = Alias.__type_params__ + self.assertIs(Alias.__value__(), T) + + def test_class_base_containing_lambda(self): + # Test that scopes nested inside hidden functions work correctly + outer_var = "outer" + class Base[T]: ... + class Child[T](Base[lambda: (int, outer_var, T)]): ... + base, _ = types.get_original_bases(Child) + func, = get_args(base) + T, = Child.__type_params__ + self.assertEqual(func(), (int, "outer", T)) + + def test_comprehension_01(self): + type Alias[T: ([T for T in (T, [1])[1]], T)] = [T for T in T.__name__] + self.assertEqual(Alias.__value__, ["T"]) + T, = Alias.__type_params__ + self.assertEqual(T.__constraints__, ([1], T)) + + def test_comprehension_02(self): + type Alias[T: [lambda: T for T in (T, [1])[1]]] = [lambda: T for T in T.__name__] + func, = Alias.__value__ + self.assertEqual(func(), "T") + T, = Alias.__type_params__ + func, = T.__bound__ + self.assertEqual(func(), 1) + + +def global_generic_func[T](): + pass + +class GlobalGenericClass[T]: + pass + + +class TypeParamsLazyEvaluationTest(unittest.TestCase): + def test_qualname(self): + class Foo[T]: + pass + + def func[T](): + pass + + self.assertEqual(Foo.__qualname__, "TypeParamsLazyEvaluationTest.test_qualname..Foo") + self.assertEqual(func.__qualname__, "TypeParamsLazyEvaluationTest.test_qualname..func") + self.assertEqual(global_generic_func.__qualname__, "global_generic_func") + self.assertEqual(GlobalGenericClass.__qualname__, "GlobalGenericClass") + + def test_recursive_class(self): + class Foo[T: Foo, U: (Foo, Foo)]: + pass + + type_params = Foo.__type_params__ + self.assertEqual(len(type_params), 2) + self.assertEqual(type_params[0].__name__, "T") + self.assertEqual(type_params[0].__bound__, Foo) + self.assertEqual(type_params[0].__constraints__, None) + + self.assertEqual(type_params[1].__name__, "U") + self.assertEqual(type_params[1].__bound__, None) + self.assertEqual(type_params[1].__constraints__, (Foo, Foo)) + + def test_evaluation_error(self): + class Foo[T: Undefined, U: (Undefined,)]: + pass + + type_params = Foo.__type_params__ + with self.assertRaises(NameError): + type_params[0].__bound__ + self.assertEqual(type_params[0].__constraints__, None) + self.assertEqual(type_params[1].__bound__, None) + with self.assertRaises(NameError): + type_params[1].__constraints__ + + Undefined = "defined" + self.assertEqual(type_params[0].__bound__, "defined") + self.assertEqual(type_params[0].__constraints__, None) + + self.assertEqual(type_params[1].__bound__, None) + self.assertEqual(type_params[1].__constraints__, ("defined",)) + + +class TypeParamsClassScopeTest(unittest.TestCase): + def test_alias(self): + class X: + T = int + type U = T + self.assertIs(X.U.__value__, int) + + ns = run_code(""" + glb = "global" + class X: + cls = "class" + type U = (glb, cls) + """) + cls = ns["X"] + self.assertEqual(cls.U.__value__, ("global", "class")) + + def test_bound(self): + class X: + T = int + def foo[U: T](self): ... + self.assertIs(X.foo.__type_params__[0].__bound__, int) + + ns = run_code(""" + glb = "global" + class X: + cls = "class" + def foo[T: glb, U: cls](self): ... + """) + cls = ns["X"] + T, U = cls.foo.__type_params__ + self.assertEqual(T.__bound__, "global") + self.assertEqual(U.__bound__, "class") + + def test_modified_later(self): + class X: + T = int + def foo[U: T](self): ... + type Alias = T + X.T = float + self.assertIs(X.foo.__type_params__[0].__bound__, float) + self.assertIs(X.Alias.__value__, float) + + def test_binding_uses_global(self): + ns = run_code(""" + x = "global" + def outer(): + x = "nonlocal" + class Cls: + type Alias = x + val = Alias.__value__ + def meth[T: x](self, arg: x): ... + bound = meth.__type_params__[0].__bound__ + annotation = meth.__annotations__["arg"] + x = "class" + return Cls + """) + cls = ns["outer"]() + self.assertEqual(cls.val, "global") + self.assertEqual(cls.bound, "global") + self.assertEqual(cls.annotation, "global") + + def test_no_binding_uses_nonlocal(self): + ns = run_code(""" + x = "global" + def outer(): + x = "nonlocal" + class Cls: + type Alias = x + val = Alias.__value__ + def meth[T: x](self, arg: x): ... + bound = meth.__type_params__[0].__bound__ + return Cls + """) + cls = ns["outer"]() + self.assertEqual(cls.val, "nonlocal") + self.assertEqual(cls.bound, "nonlocal") + self.assertEqual(cls.meth.__annotations__["arg"], "nonlocal") + + def test_explicit_global(self): + ns = run_code(""" + x = "global" + def outer(): + x = "nonlocal" + class Cls: + global x + type Alias = x + Cls.x = "class" + return Cls + """) + cls = ns["outer"]() + self.assertEqual(cls.Alias.__value__, "global") + + def test_explicit_global_with_no_static_bound(self): + ns = run_code(""" + def outer(): + class Cls: + global x + type Alias = x + Cls.x = "class" + return Cls + """) + ns["x"] = "global" + cls = ns["outer"]() + self.assertEqual(cls.Alias.__value__, "global") + + def test_explicit_global_with_assignment(self): + ns = run_code(""" + x = "global" + def outer(): + x = "nonlocal" + class Cls: + global x + type Alias = x + x = "global from class" + Cls.x = "class" + return Cls + """) + cls = ns["outer"]() + self.assertEqual(cls.Alias.__value__, "global from class") + + def test_explicit_nonlocal(self): + ns = run_code(""" + x = "global" + def outer(): + x = "nonlocal" + class Cls: + nonlocal x + type Alias = x + x = "class" + return Cls + """) + cls = ns["outer"]() + self.assertEqual(cls.Alias.__value__, "class") + + +class TypeParamsManglingTest(unittest.TestCase): + def test_mangling(self): + class Foo[__T]: + param = __T + def meth[__U](self, arg: __T, arg2: __U): + return (__T, __U) + type Alias[__V] = (__T, __V) + + T = Foo.__type_params__[0] + self.assertEqual(T.__name__, "__T") + U = Foo.meth.__type_params__[0] + self.assertEqual(U.__name__, "__U") + V = Foo.Alias.__type_params__[0] + self.assertEqual(V.__name__, "__V") + + anno = Foo.meth.__annotations__ + self.assertIs(anno["arg"], T) + self.assertIs(anno["arg2"], U) + self.assertEqual(Foo().meth(1, 2), (T, U)) + + self.assertEqual(Foo.Alias.__value__, (T, V)) + + +class TypeParamsComplexCallsTest(unittest.TestCase): + def test_defaults(self): + # Generic functions with both defaults and kwdefaults trigger a specific code path + # in the compiler. + def func[T](a: T = "a", *, b: T = "b"): + return (a, b) + + T, = func.__type_params__ + self.assertIs(func.__annotations__["a"], T) + self.assertIs(func.__annotations__["b"], T) + self.assertEqual(func(), ("a", "b")) + self.assertEqual(func(1), (1, "b")) + self.assertEqual(func(b=2), ("a", 2)) + + def test_complex_base(self): + class Base: + def __init_subclass__(cls, **kwargs) -> None: + cls.kwargs = kwargs + + kwargs = {"c": 3} + # Base classes with **kwargs trigger a different code path in the compiler. + class C[T](Base, a=1, b=2, **kwargs): + pass + + T, = C.__type_params__ + self.assertEqual(T.__name__, "T") + self.assertEqual(C.kwargs, {"a": 1, "b": 2, "c": 3}) + + bases = (Base,) + class C2[T](*bases, **kwargs): + pass + + T, = C2.__type_params__ + self.assertEqual(T.__name__, "T") + self.assertEqual(C2.kwargs, {"c": 3}) + + +class TypeParamsTraditionalTypeVarsTest(unittest.TestCase): + def test_traditional_01(self): + code = """ + from typing import Generic + class ClassA[T](Generic[T]): ... + """ + + with self.assertRaisesRegex(TypeError, r"Cannot inherit from Generic\[...\] multiple times."): + run_code(code) + + def test_traditional_02(self): + from typing import TypeVar + S = TypeVar("S") + with self.assertRaises(TypeError): + class ClassA[T](dict[T, S]): ... + + def test_traditional_03(self): + # This does not generate a runtime error, but it should be + # flagged as an error by type checkers. + from typing import TypeVar + S = TypeVar("S") + def func[T](a: T, b: S) -> T | S: + return a + + +class TypeParamsTypeVarTest(unittest.TestCase): + def test_typevar_01(self): + def func1[A: str, B: str | int, C: (int, str)](): + return (A, B, C) + + a, b, c = func1() + + self.assertIsInstance(a, TypeVar) + self.assertEqual(a.__bound__, str) + self.assertTrue(a.__infer_variance__) + self.assertFalse(a.__covariant__) + self.assertFalse(a.__contravariant__) + + self.assertIsInstance(b, TypeVar) + self.assertEqual(b.__bound__, str | int) + self.assertTrue(b.__infer_variance__) + self.assertFalse(b.__covariant__) + self.assertFalse(b.__contravariant__) + + self.assertIsInstance(c, TypeVar) + self.assertEqual(c.__bound__, None) + self.assertEqual(c.__constraints__, (int, str)) + self.assertTrue(c.__infer_variance__) + self.assertFalse(c.__covariant__) + self.assertFalse(c.__contravariant__) + + def test_typevar_generator(self): + def get_generator[A](): + def generator1[C](): + yield C + + def generator2[B](): + yield A + yield B + yield from generator1() + return generator2 + + gen = get_generator() + + a, b, c = [x for x in gen()] + + self.assertIsInstance(a, TypeVar) + self.assertEqual(a.__name__, "A") + self.assertIsInstance(b, TypeVar) + self.assertEqual(b.__name__, "B") + self.assertIsInstance(c, TypeVar) + self.assertEqual(c.__name__, "C") + + @requires_working_socket() + def test_typevar_coroutine(self): + def get_coroutine[A](): + async def coroutine[B](): + return (A, B) + return coroutine + + co = get_coroutine() + + self.addCleanup(asyncio.set_event_loop_policy, None) + a, b = asyncio.run(co()) + + self.assertIsInstance(a, TypeVar) + self.assertEqual(a.__name__, "A") + self.assertIsInstance(b, TypeVar) + self.assertEqual(b.__name__, "B") + + +class TypeParamsTypeVarTupleTest(unittest.TestCase): + def test_typevartuple_01(self): + code = """def func1[*A: str](): pass""" + check_syntax_error(self, code) + code = """def func1[*A: (int, str)](): pass""" + check_syntax_error(self, code) + code = """class X[*A: str]: pass""" + check_syntax_error(self, code) + code = """class X[*A: (int, str)]: pass""" + check_syntax_error(self, code) + code = """type X[*A: str] = int""" + check_syntax_error(self, code) + code = """type X[*A: (int, str)] = int""" + check_syntax_error(self, code) + + def test_typevartuple_02(self): + def func1[*A](): + return A + + a = func1() + self.assertIsInstance(a, TypeVarTuple) + + +class TypeParamsTypeVarParamSpecTest(unittest.TestCase): + def test_paramspec_01(self): + code = """def func1[**A: str](): pass""" + check_syntax_error(self, code) + code = """def func1[**A: (int, str)](): pass""" + check_syntax_error(self, code) + code = """class X[**A: str]: pass""" + check_syntax_error(self, code) + code = """class X[**A: (int, str)]: pass""" + check_syntax_error(self, code) + code = """type X[**A: str] = int""" + check_syntax_error(self, code) + code = """type X[**A: (int, str)] = int""" + check_syntax_error(self, code) + + def test_paramspec_02(self): + def func1[**A](): + return A + + a = func1() + self.assertIsInstance(a, ParamSpec) + self.assertTrue(a.__infer_variance__) + self.assertFalse(a.__covariant__) + self.assertFalse(a.__contravariant__) + + +class TypeParamsTypeParamsDunder(unittest.TestCase): + def test_typeparams_dunder_class_01(self): + class Outer[A, B]: + class Inner[C, D]: + @staticmethod + def get_typeparams(): + return A, B, C, D + + a, b, c, d = Outer.Inner.get_typeparams() + self.assertEqual(Outer.__type_params__, (a, b)) + self.assertEqual(Outer.Inner.__type_params__, (c, d)) + + self.assertEqual(Outer.__parameters__, (a, b)) + self.assertEqual(Outer.Inner.__parameters__, (c, d)) + + def test_typeparams_dunder_class_02(self): + class ClassA: + pass + + self.assertEqual(ClassA.__type_params__, ()) + + def test_typeparams_dunder_class_03(self): + code = """ + class ClassA[A](): + pass + ClassA.__type_params__ = () + """ + + with self.assertRaisesRegex(AttributeError, "attribute '__type_params__' of 'type' objects is not writable"): + run_code(code) + + def test_typeparams_dunder_function_01(self): + def outer[A, B](): + def inner[C, D](): + return A, B, C, D + + return inner + + inner = outer() + a, b, c, d = inner() + self.assertEqual(outer.__type_params__, (a, b)) + self.assertEqual(inner.__type_params__, (c, d)) + + def test_typeparams_dunder_function_02(self): + def func1(): + pass + + self.assertEqual(func1.__type_params__, ()) + + def test_typeparams_dunder_function_03(self): + code = """ + def func[A](): + pass + func.__type_params__ = () + """ + + with self.assertRaisesRegex(AttributeError, "attribute '__type_params__' of 'function' objects is not writable"): + run_code(code) diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py index e1c6a8a7f3..71aff87dca 100644 --- a/Lib/test/test_typing.py +++ b/Lib/test/test_typing.py @@ -48,11 +48,8 @@ from test import _typed_dict_helper -py_typing = import_helper.import_fresh_module('typing', blocked=['_typing']) -c_typing = import_helper.import_fresh_module('typing', fresh=['_typing']) - - CANNOT_SUBCLASS_TYPE = 'Cannot subclass special typing classes' +NOT_A_BASE_TYPE = "type 'typing.%s' is not an acceptable base type" CANNOT_SUBCLASS_INSTANCE = 'Cannot subclass an instance of %s' @@ -430,7 +427,7 @@ def test_no_redefinition(self): self.assertNotEqual(TypeVar('T', int, str), TypeVar('T', int, str)) def test_cannot_subclass(self): - with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE): + with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'TypeVar'): class V(TypeVar): pass T = TypeVar("T") with self.assertRaisesRegex(TypeError, @@ -446,6 +443,9 @@ def test_bound_errors(self): TypeVar('X', bound=Union) with self.assertRaises(TypeError): TypeVar('X', str, float, bound=Employee) + with self.assertRaisesRegex(TypeError, + r"Bound must be a type\. Got \(1, 2\)\."): + TypeVar('X', bound=(1, 2)) def test_missing__name__(self): # See bpo-39942 @@ -1161,7 +1161,7 @@ class A(Generic[Unpack[Ts]]): pass self.assertEndsWith(repr(K[float, str]), 'A[float, str, typing.Unpack[typing.Tuple[str, ...]]]') def test_cannot_subclass(self): - with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE): + with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'TypeVarTuple'): class C(TypeVarTuple): pass Ts = TypeVarTuple('Ts') with self.assertRaisesRegex(TypeError, @@ -6444,34 +6444,27 @@ def foo(a: A) -> Optional[BaseException]: class TestModules(TestCase): func_names = ['_idfunc'] - def test_py_functions(self): - for fname in self.func_names: - self.assertEqual(getattr(py_typing, fname).__module__, 'typing') - - @skipUnless(c_typing, 'requires _typing') def test_c_functions(self): for fname in self.func_names: - self.assertEqual(getattr(c_typing, fname).__module__, '_typing') + self.assertEqual(getattr(typing, fname).__module__, '_typing') -class NewTypeTests: +class NewTypeTests(BaseTestCase): def cleanup(self): - for f in self.module._cleanups: + for f in typing._cleanups: f() @classmethod def setUpClass(cls): - sys.modules['typing'] = cls.module global UserId - UserId = cls.module.NewType('UserId', int) - cls.UserName = cls.module.NewType(cls.__qualname__ + '.UserName', str) + UserId = typing.NewType('UserId', int) + cls.UserName = typing.NewType(cls.__qualname__ + '.UserName', str) @classmethod def tearDownClass(cls): global UserId del UserId del cls.UserName - sys.modules['typing'] = typing def tearDown(self): self.cleanup() @@ -6491,11 +6484,11 @@ class D(UserId): def test_or(self): for cls in (int, self.UserName): with self.subTest(cls=cls): - self.assertEqual(UserId | cls, self.module.Union[UserId, cls]) - self.assertEqual(cls | UserId, self.module.Union[cls, UserId]) + self.assertEqual(UserId | cls, typing.Union[UserId, cls]) + self.assertEqual(cls | UserId, typing.Union[cls, UserId]) - self.assertEqual(self.module.get_args(UserId | cls), (UserId, cls)) - self.assertEqual(self.module.get_args(cls | UserId), (cls, UserId)) + self.assertEqual(typing.get_args(UserId | cls), (UserId, cls)) + self.assertEqual(typing.get_args(cls | UserId), (cls, UserId)) def test_special_attrs(self): self.assertEqual(UserId.__name__, 'UserId') @@ -6516,7 +6509,7 @@ def test_repr(self): f'{__name__}.{self.__class__.__qualname__}.UserName') def test_pickle(self): - UserAge = self.module.NewType('UserAge', float) + UserAge = typing.NewType('UserAge', float) for proto in range(pickle.HIGHEST_PROTOCOL + 1): with self.subTest(proto=proto): pickled = pickle.dumps(UserId, proto) @@ -6548,15 +6541,6 @@ class ProUserId(UserId): ... -class NewTypePythonTests(NewTypeTests, BaseTestCase): - module = py_typing - - -@skipUnless(c_typing, 'requires _typing') -class NewTypeCTests(NewTypeTests, BaseTestCase): - module = c_typing - - class NamedTupleTests(BaseTestCase): class NestedEmployee(NamedTuple): name: str @@ -8170,11 +8154,11 @@ def test_paramspec_gets_copied(self): self.assertEqual(C2[Concatenate[T, P2]].__parameters__, (T, P2)) def test_cannot_subclass(self): - with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE): + with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpec'): class C(ParamSpec): pass - with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE): + with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpecArgs'): class C(ParamSpecArgs): pass - with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE): + with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpecKwargs'): class C(ParamSpecKwargs): pass P = ParamSpec('P') with self.assertRaisesRegex(TypeError,