diff options
Diffstat (limited to 'Lib/test/test_peg_parser.py')
| -rw-r--r-- | Lib/test/test_peg_parser.py | 803 |
1 files changed, 0 insertions, 803 deletions
diff --git a/Lib/test/test_peg_parser.py b/Lib/test/test_peg_parser.py deleted file mode 100644 index fae85e3..0000000 --- a/Lib/test/test_peg_parser.py +++ /dev/null @@ -1,803 +0,0 @@ -import ast -import _peg_parser as peg_parser -import unittest -from typing import Any, Union, Iterable, Tuple -from textwrap import dedent -from test import support - - -TEST_CASES = [ - ('annotated_assignment', 'x: int = 42'), - ('annotated_assignment_with_tuple', 'x: tuple = 1, 2'), - ('annotated_assignment_with_parens', '(paren): int = 3+2'), - ('annotated_assignment_with_yield', 'x: int = yield 42'), - ('annotated_no_assignment', 'x: int'), - ('annotation_with_multiple_parens', '((parens)): int'), - ('annotation_with_parens', '(parens): int'), - ('annotated_assignment_with_attr', 'a.b: int'), - ('annotated_assignment_with_subscript', 'a[b]: int'), - ('annotated_assignment_with_attr_and_parens', '(a.b): int'), - ('annotated_assignment_with_subscript_and_parens', '(a[b]): int'), - ('assert', 'assert a'), - ('assert_message', 'assert a, b'), - ('assignment_false', 'a = False'), - ('assignment_none', 'a = None'), - ('assignment_true', 'a = True'), - ('assignment_paren', '(a) = 42'), - ('assignment_paren_multiple', '(a, b) = (0, 1)'), - ('asyncfor', - ''' - async for i in a: - pass - '''), - ('attribute_call', 'a.b()'), - ('attribute_multiple_names', 'abcd.efg.hij'), - ('attribute_simple', 'a.b'), - ('attributes_subscript', 'a.b[0]'), - ('augmented_assignment', 'x += 42'), - ('augmented_assignment_attribute', 'a.b.c += 42'), - ('augmented_assignment_paren', '(x) += 42'), - ('augmented_assignment_paren_subscript', '(x[0]) -= 42'), - ('binop_add', '1 + 1'), - ('binop_add_multiple', '1 + 1 + 1 + 1'), - ('binop_all', '1 + 2 * 5 + 3 ** 2 - -3'), - ('binop_boolop_comp', '1 + 1 == 2 or 1 + 1 == 3 and not b'), - ('boolop_or', 'a or b'), - ('boolop_or_multiple', 'a or b or c'), - ('class_def_bases', - ''' - class C(A, B): - pass - '''), - ('class_def_decorators', - ''' - @a - class C: - pass - '''), - ('class_def_decorator_with_expression', - ''' - @lambda x: 42 - class C: - pass - '''), - ('class_def_decorator_with_expression_and_walrus', - ''' - @x:=lambda x: 42 - class C: - pass - '''), - - ('class_def_keywords', - ''' - class C(keyword=a+b, **c): - pass - '''), - ('class_def_mixed', - ''' - class C(A, B, keyword=0, **a): - pass - '''), - ('class_def_simple', - ''' - class C: - pass - '''), - ('class_def_starred_and_kwarg', - ''' - class C(A, B, *x, **y): - pass - '''), - ('class_def_starred_in_kwargs', - ''' - class C(A, x=2, *[B, C], y=3): - pass - '''), - ('call_attribute', 'f().b'), - ('call_genexp', 'f(i for i in a)'), - ('call_mixed_args', 'f(a, b, *c, **d)'), - ('call_mixed_args_named', 'f(a, b, *c, d=4, **v)'), - ('call_one_arg', 'f(a)'), - ('call_posarg_genexp', 'f(a, (i for i in a))'), - ('call_simple', 'f()'), - ('call_subscript', 'f()[0]'), - ('comp', 'a == b'), - ('comp_multiple', 'a == b == c'), - ('comp_paren_end', 'a == (b-1)'), - ('comp_paren_start', '(a-1) == b'), - ('decorator', - ''' - @a - def f(): - pass - '''), - ('decorator_async', - ''' - @a - async def d(): - pass - '''), - ('decorator_with_expression', - ''' - @lambda x: 42 - def f(): - pass - '''), - ('decorator_with_expression_and_walrus', - ''' - @x:=lambda x: 42 - def f(): - pass - '''), - ('del_attribute', 'del a.b'), - ('del_call_attribute', 'del a().c'), - ('del_call_genexp_attribute', 'del a(i for i in b).c'), - ('del_empty', 'del()'), - ('del_list', 'del a, [b, c]'), - ('del_mixed', 'del a[0].b().c'), - ('del_multiple', 'del a, b'), - ('del_multiple_calls_attribute', 'del a()().b'), - ('del_paren', 'del(a,b)'), - ('del_paren_single_target', 'del(a)'), - ('del_subscript_attribute', 'del a[0].b'), - ('del_tuple', 'del a, (b, c)'), - ('delete', 'del a'), - ('dict', - ''' - { - a: 1, - b: 2, - c: 3 - } - '''), - ('dict_comp', '{x:1 for x in a}'), - ('dict_comp_if', '{x:1+2 for x in a if b}'), - ('dict_empty', '{}'), - ('empty_line_after_linecont', - r''' - pass - \ - - pass - '''), - ('for', - ''' - for i in a: - pass - '''), - ('for_else', - ''' - for i in a: - pass - else: - pass - '''), - ('for_star_target_in_paren', 'for (a) in b: pass'), - ('for_star_targets_attribute', 'for a.b in c: pass'), - ('for_star_targets_call_attribute', 'for a().c in b: pass'), - ('for_star_targets_empty', 'for () in a: pass'), - ('for_star_targets_mixed', 'for a[0].b().c in d: pass'), - ('for_star_targets_mixed_starred', - ''' - for a, *b, (c, d) in e: - pass - '''), - ('for_star_targets_multiple', 'for a, b in c: pass'), - ('for_star_targets_nested_starred', 'for *[*a] in b: pass'), - ('for_star_targets_starred', 'for *a in b: pass'), - ('for_star_targets_subscript_attribute', 'for a[0].b in c: pass'), - ('for_star_targets_trailing_comma', - ''' - for a, (b, c), in d: - pass - '''), - ('for_star_targets_tuple', 'for a, (b, c) in d: pass'), - ('for_underscore', - ''' - for _ in a: - pass - '''), - ('function_return_type', - ''' - def f() -> Any: - pass - '''), - ('f-string_slice', "f'{x[2]}'"), - ('f-string_slice_upper', "f'{x[2:3]}'"), - ('f-string_slice_step', "f'{x[2:3:-2]}'"), - ('f-string_constant', "f'{42}'"), - ('f-string_boolop', "f'{x and y}'"), - ('f-string_named_expr', "f'{(x:=42)}'"), - ('f-string_binop', "f'{x+y}'"), - ('f-string_unaryop', "f'{not x}'"), - ('f-string_lambda', "f'{(lambda x, /, y, y2=42 , *z, k1, k2=34, **k3: 42)}'"), - ('f-string_lambda_call', "f'{(lambda: 2)(2)}'"), - ('f-string_ifexpr', "f'{x if y else z}'"), - ('f-string_dict', "f'{ {2:34, 3:34} }'"), - ('f-string_set', "f'{ {2,-45} }'"), - ('f-string_list', "f'{ [2,-45] }'"), - ('f-string_tuple', "f'{ (2,-45) }'"), - ('f-string_listcomp', "f'{[x for x in y if z]}'"), - ('f-string_setcomp', "f'{ {x for x in y if z} }'"), - ('f-string_dictcomp', "f'{ {x:x for x in y if z} }'"), - ('f-string_genexpr', "f'{ (x for x in y if z) }'"), - ('f-string_yield', "f'{ (yield x) }'"), - ('f-string_yieldfrom', "f'{ (yield from x) }'"), - ('f-string_await', "f'{ await x }'"), - ('f-string_compare', "f'{ x == y }'"), - ('f-string_call', "f'{ f(x,y,z) }'"), - ('f-string_attribute', "f'{ f.x.y.z }'"), - ('f-string_starred', "f'{ *x, }'"), - ('f-string_doublestarred', "f'{ {**x} }'"), - ('f-string_escape_brace', "f'{{Escape'"), - ('f-string_escape_closing_brace', "f'Escape}}'"), - ('f-string_repr', "f'{a!r}'"), - ('f-string_str', "f'{a!s}'"), - ('f-string_ascii', "f'{a!a}'"), - ('f-string_debug', "f'{a=}'"), - ('f-string_padding', "f'{a:03d}'"), - ('f-string_multiline', - """ - f''' - {hello} - ''' - """), - ('f-string_multiline_in_expr', - """ - f''' - { - hello - } - ''' - """), - ('f-string_multiline_in_call', - """ - f''' - {f( - a, b, c - )} - ''' - """), - ('global', 'global a, b'), - ('group', '(yield a)'), - ('if_elif', - ''' - if a: - pass - elif b: - pass - '''), - ('if_elif_elif', - ''' - if a: - pass - elif b: - pass - elif c: - pass - '''), - ('if_elif_else', - ''' - if a: - pass - elif b: - pass - else: - pass - '''), - ('if_else', - ''' - if a: - pass - else: - pass - '''), - ('if_simple', 'if a: pass'), - ('import', 'import a'), - ('import_alias', 'import a as b'), - ('import_dotted', 'import a.b'), - ('import_dotted_alias', 'import a.b as c'), - ('import_dotted_multichar', 'import ab.cd'), - ('import_from', 'from a import b'), - ('import_from_alias', 'from a import b as c'), - ('import_from_dotted', 'from a.b import c'), - ('import_from_dotted_alias', 'from a.b import c as d'), - ('import_from_multiple_aliases', 'from a import b as c, d as e'), - ('import_from_one_dot', 'from .a import b'), - ('import_from_one_dot_alias', 'from .a import b as c'), - ('import_from_star', 'from a import *'), - ('import_from_three_dots', 'from ...a import b'), - ('import_from_trailing_comma', 'from a import (b,)'), - ('kwarg', - ''' - def f(**a): - pass - '''), - ('kwonly_args', - ''' - def f(*, a, b): - pass - '''), - ('kwonly_args_with_default', - ''' - def f(*, a=2, b): - pass - '''), - ('lambda_kwarg', 'lambda **a: 42'), - ('lambda_kwonly_args', 'lambda *, a, b: 42'), - ('lambda_kwonly_args_with_default', 'lambda *, a=2, b: 42'), - ('lambda_mixed_args', 'lambda a, /, b, *, c: 42'), - ('lambda_mixed_args_with_default', 'lambda a, b=2, /, c=3, *e, f, **g: 42'), - ('lambda_no_args', 'lambda: 42'), - ('lambda_pos_args', 'lambda a,b: 42'), - ('lambda_pos_args_with_default', 'lambda a, b=2: 42'), - ('lambda_pos_only_args', 'lambda a, /: 42'), - ('lambda_pos_only_args_with_default', 'lambda a=0, /: 42'), - ('lambda_pos_posonly_args', 'lambda a, b, /, c, d: 42'), - ('lambda_pos_posonly_args_with_default', 'lambda a, b=0, /, c=2: 42'), - ('lambda_vararg', 'lambda *a: 42'), - ('lambda_vararg_kwonly_args', 'lambda *a, b: 42'), - ('list', '[1, 2, a]'), - ('list_comp', '[i for i in a]'), - ('list_comp_if', '[i for i in a if b]'), - ('list_trailing_comma', '[1+2, a, 3+4,]'), - ('mixed_args', - ''' - def f(a, /, b, *, c): - pass - '''), - ('mixed_args_with_default', - ''' - def f(a, b=2, /, c=3, *e, f, **g): - pass - '''), - ('multipart_string_bytes', 'b"Hola" b"Hello" b"Bye"'), - ('multipart_string_triple', '"""Something here""" "and now"'), - ('multipart_string_different_prefixes', 'u"Something" "Other thing" r"last thing"'), - ('multiple_assignments', 'x = y = z = 42'), - ('multiple_assignments_with_yield', 'x = y = z = yield 42'), - ('multiple_pass', - ''' - pass; pass - pass - '''), - ('namedexpr', '(x := [1, 2, 3])'), - ('namedexpr_false', '(x := False)'), - ('namedexpr_none', '(x := None)'), - ('namedexpr_true', '(x := True)'), - ('nonlocal', 'nonlocal a, b'), - ('number_complex', '-2.234+1j'), - ('number_float', '-34.2333'), - ('number_imaginary_literal', '1.1234j'), - ('number_integer', '-234'), - ('number_underscores', '1_234_567'), - ('pass', 'pass'), - ('pos_args', - ''' - def f(a, b): - pass - '''), - ('pos_args_with_default', - ''' - def f(a, b=2): - pass - '''), - ('pos_only_args', - ''' - def f(a, /): - pass - '''), - ('pos_only_args_with_default', - ''' - def f(a=0, /): - pass - '''), - ('pos_posonly_args', - ''' - def f(a, b, /, c, d): - pass - '''), - ('pos_posonly_args_with_default', - ''' - def f(a, b=0, /, c=2): - pass - '''), - ('primary_mixed', 'a.b.c().d[0]'), - ('raise', 'raise'), - ('raise_ellipsis', 'raise ...'), - ('raise_expr', 'raise a'), - ('raise_from', 'raise a from b'), - ('return', 'return'), - ('return_expr', 'return a'), - ('set', '{1, 2+4, 3+5}'), - ('set_comp', '{i for i in a}'), - ('set_trailing_comma', '{1, 2, 3,}'), - ('simple_assignment', 'x = 42'), - ('simple_assignment_with_yield', 'x = yield 42'), - ('string_bytes', 'b"hello"'), - ('string_concatenation_bytes', 'b"hello" b"world"'), - ('string_concatenation_simple', '"abcd" "efgh"'), - ('string_format_simple', 'f"hello"'), - ('string_format_with_formatted_value', 'f"hello {world}"'), - ('string_simple', '"hello"'), - ('string_unicode', 'u"hello"'), - ('subscript_attribute', 'a[0].b'), - ('subscript_call', 'a[b]()'), - ('subscript_multiple_slices', 'a[0:a:2, 1]'), - ('subscript_simple', 'a[0]'), - ('subscript_single_element_tuple', 'a[0,]'), - ('subscript_trailing_comma', 'a[0, 1, 2,]'), - ('subscript_tuple', 'a[0, 1, 2]'), - ('subscript_whole_slice', 'a[0+1:b:c]'), - ('try_except', - ''' - try: - pass - except: - pass - '''), - ('try_except_else', - ''' - try: - pass - except: - pass - else: - pass - '''), - ('try_except_else_finally', - ''' - try: - pass - except: - pass - else: - pass - finally: - pass - '''), - ('try_except_expr', - ''' - try: - pass - except a: - pass - '''), - ('try_except_expr_target', - ''' - try: - pass - except a as b: - pass - '''), - ('try_except_finally', - ''' - try: - pass - except: - pass - finally: - pass - '''), - ('try_finally', - ''' - try: - pass - finally: - pass - '''), - ('unpacking_binop', '[*([1, 2, 3] + [3, 4, 5])]'), - ('unpacking_call', '[*b()]'), - ('unpacking_compare', '[*(x < y)]'), - ('unpacking_constant', '[*3]'), - ('unpacking_dict', '[*{1: 2, 3: 4}]'), - ('unpacking_dict_comprehension', '[*{x:y for x,y in z}]'), - ('unpacking_ifexpr', '[*([1, 2, 3] if x else y)]'), - ('unpacking_list', '[*[1,2,3]]'), - ('unpacking_list_comprehension', '[*[x for x in y]]'), - ('unpacking_namedexpr', '[*(x:=[1, 2, 3])]'), - ('unpacking_set', '[*{1,2,3}]'), - ('unpacking_set_comprehension', '[*{x for x in y}]'), - ('unpacking_string', '[*"myvalue"]'), - ('unpacking_tuple', '[*(1,2,3)]'), - ('unpacking_unaryop', '[*(not [1, 2, 3])]'), - ('unpacking_yield', '[*(yield 42)]'), - ('unpacking_yieldfrom', '[*(yield from x)]'), - ('tuple', '(1, 2, 3)'), - ('vararg', - ''' - def f(*a): - pass - '''), - ('vararg_kwonly_args', - ''' - def f(*a, b): - pass - '''), - ('while', - ''' - while a: - pass - '''), - ('while_else', - ''' - while a: - pass - else: - pass - '''), - ('with', - ''' - with a: - pass - '''), - ('with_as', - ''' - with a as b: - pass - '''), - ('with_as_paren', - ''' - with a as (b): - pass - '''), - ('with_as_empty', 'with a as (): pass'), - ('with_list_recursive', - ''' - with a as [x, [y, z]]: - pass - '''), - ('with_tuple_recursive', - ''' - with a as ((x, y), z): - pass - '''), - ('with_tuple_target', - ''' - with a as (x, y): - pass - '''), - ('with_list_target', - ''' - with a as [x, y]: - pass - '''), - ('yield', 'yield'), - ('yield_expr', 'yield a'), - ('yield_from', 'yield from a'), -] - -FAIL_TEST_CASES = [ - ("annotation_multiple_targets", "(a, b): int = 42"), - ("annotation_nested_tuple", "((a, b)): int"), - ("annotation_list", "[a]: int"), - ("annotation_lambda", "lambda: int = 42"), - ("annotation_tuple", "(a,): int"), - ("annotation_tuple_without_paren", "a,: int"), - ("assignment_keyword", "a = if"), - ("augmented_assignment_list", "[a, b] += 1"), - ("augmented_assignment_tuple", "a, b += 1"), - ("augmented_assignment_tuple_paren", "(a, b) += (1, 2)"), - ("comprehension_lambda", "(a for a in lambda: b)"), - ("comprehension_else", "(a for a in b if c else d"), - ("del_call", "del a()"), - ("del_call_genexp", "del a(i for i in b)"), - ("del_subscript_call", "del a[b]()"), - ("del_attribute_call", "del a.b()"), - ("del_mixed_call", "del a[0].b().c.d()"), - ("for_star_targets_call", "for a() in b: pass"), - ("for_star_targets_subscript_call", "for a[b]() in c: pass"), - ("for_star_targets_attribute_call", "for a.b() in c: pass"), - ("for_star_targets_mixed_call", "for a[0].b().c.d() in e: pass"), - ("for_star_targets_in", "for a, in in b: pass"), - ("f-string_assignment", "f'{x = 42}'"), - ("f-string_empty", "f'{}'"), - ("f-string_function_def", "f'{def f(): pass}'"), - ("f-string_lambda", "f'{lambda x: 42}'"), - ("f-string_singe_brace", "f'{'"), - ("f-string_single_closing_brace", "f'}'"), - ("from_import_invalid", "from import import a"), - ("from_import_trailing_comma", "from a import b,"), - ("import_non_ascii_syntax_error", "import ä £"), - # This test case checks error paths involving tokens with uninitialized - # values of col_offset and end_col_offset. - ("invalid indentation", - """ - def f(): - a - a - """), - ("not_terminated_string", "a = 'example"), - ("try_except_attribute_target", - """ - try: - pass - except Exception as a.b: - pass - """), - ("try_except_subscript_target", - """ - try: - pass - except Exception as a[0]: - pass - """), -] - -FAIL_SPECIALIZED_MESSAGE_CASES = [ - ("f(x, y, z=1, **b, *a", "iterable argument unpacking follows keyword argument unpacking"), - ("f(x, y=1, *z, **a, b", "positional argument follows keyword argument unpacking"), - ("f(x, y, z=1, a=2, b", "positional argument follows keyword argument"), - ("True = 1", "cannot assign to True"), - ("a() = 1", "cannot assign to function call"), - ("(a, b): int", "only single target (not tuple) can be annotated"), - ("[a, b]: int", "only single target (not list) can be annotated"), - ("a(): int", "illegal target for annotation"), - ("1 += 1", "'literal' is an illegal expression for augmented assignment"), - ("pass\n pass", "unexpected indent"), - ("def f():\npass", "expected an indented block"), - ("def f(*): pass", "named arguments must follow bare *"), - ("def f(*,): pass", "named arguments must follow bare *"), - ("def f(*, **a): pass", "named arguments must follow bare *"), - ("lambda *: pass", "named arguments must follow bare *"), - ("lambda *,: pass", "named arguments must follow bare *"), - ("lambda *, **a: pass", "named arguments must follow bare *"), - ("f(g()=2", "expression cannot contain assignment, perhaps you meant \"==\"?"), - ("f(a, b, *c, d.e=2", "expression cannot contain assignment, perhaps you meant \"==\"?"), - ("f(*a, **b, c=0, d[1]=3)", "expression cannot contain assignment, perhaps you meant \"==\"?"), -] - -GOOD_BUT_FAIL_TEST_CASES = [ - ('string_concatenation_format', 'f"{hello} world" f"again {and_again}"'), - ('string_concatenation_multiple', - ''' - f"hello" f"{world} again" f"and_again" - '''), - ('f-string_multiline_comp', - """ - f''' - {(i for i in a - if b)} - ''' - """), -] - -FSTRINGS_TRACEBACKS = { - 'multiline_fstrings_same_line_with_brace': ( - """ - f''' - {a$b} - ''' - """, - '(a$b)', - ), - 'multiline_fstring_brace_on_next_line': ( - """ - f''' - {a$b - }''' - """, - '(a$b', - ), - 'multiline_fstring_brace_on_previous_line': ( - """ - f''' - { - a$b}''' - """, - 'a$b)', - ), -} - -EXPRESSIONS_TEST_CASES = [ - ("expression_add", "1+1"), - ("expression_add_2", "a+b"), - ("expression_call", "f(a, b=2, **kw)"), - ("expression_tuple", "1, 2, 3"), - ("expression_tuple_one_value", "1,") -] - - -def cleanup_source(source: Any) -> str: - if isinstance(source, str): - result = dedent(source) - elif not isinstance(source, (list, tuple)): - result = "\n".join(source) - else: - raise TypeError(f"Invalid type for test source: {source}") - return result - - -def prepare_test_cases( - test_cases: Iterable[Tuple[str, Union[str, Iterable[str]]]] -) -> Tuple[Iterable[str], Iterable[str]]: - - test_ids, _test_sources = zip(*test_cases) - test_sources = list(_test_sources) - for index, source in enumerate(test_sources): - result = cleanup_source(source) - test_sources[index] = result - return test_ids, test_sources - - -TEST_IDS, TEST_SOURCES = prepare_test_cases(TEST_CASES) - -GOOD_BUT_FAIL_TEST_IDS, GOOD_BUT_FAIL_SOURCES = prepare_test_cases( - GOOD_BUT_FAIL_TEST_CASES -) - -FAIL_TEST_IDS, FAIL_SOURCES = prepare_test_cases(FAIL_TEST_CASES) - -EXPRESSIONS_TEST_IDS, EXPRESSIONS_TEST_SOURCES = prepare_test_cases( - EXPRESSIONS_TEST_CASES -) - - -class ASTGenerationTest(unittest.TestCase): - def test_correct_ast_generation_on_source_files(self) -> None: - self.maxDiff = None - for source in TEST_SOURCES: - actual_ast = peg_parser.parse_string(source) - expected_ast = peg_parser.parse_string(source, oldparser=True) - self.assertEqual( - ast.dump(actual_ast, include_attributes=True), - ast.dump(expected_ast, include_attributes=True), - f"Wrong AST generation for source: {source}", - ) - - def test_incorrect_ast_generation_on_source_files(self) -> None: - for source in FAIL_SOURCES: - with self.assertRaises(SyntaxError, msg=f"Parsing {source} did not raise an exception"): - peg_parser.parse_string(source) - - def test_incorrect_ast_generation_with_specialized_errors(self) -> None: - for source, error_text in FAIL_SPECIALIZED_MESSAGE_CASES: - exc = IndentationError if "indent" in error_text else SyntaxError - with self.assertRaises(exc) as se: - peg_parser.parse_string(source) - self.assertTrue( - error_text in se.exception.msg, - f"Actual error message does not match expexted for {source}" - ) - - @unittest.expectedFailure - def test_correct_but_known_to_fail_ast_generation_on_source_files(self) -> None: - for source in GOOD_BUT_FAIL_SOURCES: - actual_ast = peg_parser.parse_string(source) - expected_ast = peg_parser.parse_string(source, oldparser=True) - self.assertEqual( - ast.dump(actual_ast, include_attributes=True), - ast.dump(expected_ast, include_attributes=True), - f"Wrong AST generation for source: {source}", - ) - - def test_correct_ast_generation_without_pos_info(self) -> None: - for source in GOOD_BUT_FAIL_SOURCES: - actual_ast = peg_parser.parse_string(source) - expected_ast = peg_parser.parse_string(source, oldparser=True) - self.assertEqual( - ast.dump(actual_ast), - ast.dump(expected_ast), - f"Wrong AST generation for source: {source}", - ) - - def test_fstring_parse_error_tracebacks(self) -> None: - for source, error_text in FSTRINGS_TRACEBACKS.values(): - with self.assertRaises(SyntaxError) as se: - peg_parser.parse_string(dedent(source)) - self.assertEqual(error_text, se.exception.text) - - def test_correct_ast_generatrion_eval(self) -> None: - for source in EXPRESSIONS_TEST_SOURCES: - actual_ast = peg_parser.parse_string(source, mode='eval') - expected_ast = peg_parser.parse_string(source, mode='eval', oldparser=True) - self.assertEqual( - ast.dump(actual_ast, include_attributes=True), - ast.dump(expected_ast, include_attributes=True), - f"Wrong AST generation for source: {source}", - ) - - def test_tokenizer_errors_are_propagated(self) -> None: - n=201 - with self.assertRaisesRegex(SyntaxError, "too many nested parentheses"): - peg_parser.parse_string(n*'(' + ')'*n) |