forked from VimPlug/jedi
7077d0b762
See https://github.com/davidhalter/jedi/pull/691#issuecomment-182815864
Revert "Update tokenizer to adhere to PEP492 magic"
This reverts commit 65187930bd.
266 lines
7.3 KiB
Python
266 lines
7.3 KiB
Python
"""Test suite for 2to3's parser and grammar files.
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This is the place to add tests for changes to 2to3's grammar, such as those
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merging the grammars for Python 2 and 3. In addition to specific tests for
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parts of the grammar we've changed, we also make sure we can parse the
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test_grammar.py files from both Python 2 and Python 3.
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"""
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from textwrap import dedent
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from jedi._compatibility import unicode
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from jedi.parser import Parser, load_grammar, ParseError
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import pytest
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from test.helpers import TestCase
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def parse(code, version='3.4'):
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code = dedent(code) + "\n\n"
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grammar = load_grammar(version=version)
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return Parser(grammar, unicode(code), 'file_input').get_parsed_node()
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class TestDriver(TestCase):
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def test_formfeed(self):
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s = """print 1\n\x0Cprint 2\n"""
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t = parse(s, '2.7')
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self.assertEqual(t.children[0].children[0].type, 'print_stmt')
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self.assertEqual(t.children[1].children[0].type, 'print_stmt')
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s = """1\n\x0C\x0C2\n"""
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t = parse(s, '2.7')
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class GrammarTest(TestCase):
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def invalid_syntax(self, code, **kwargs):
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try:
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parse(code, **kwargs)
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except ParseError:
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pass
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else:
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raise AssertionError("Syntax shouldn't have been valid")
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class TestMatrixMultiplication(GrammarTest):
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@pytest.mark.skipif('sys.version_info[:2] < (3, 5)')
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def test_matrix_multiplication_operator(self):
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parse("a @ b")
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parse("a @= b")
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class TestYieldFrom(GrammarTest):
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def test_yield_from(self):
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parse("yield from x")
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parse("(yield from x) + y")
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self.invalid_syntax("yield from")
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class TestAsyncAwait(GrammarTest):
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@pytest.mark.skipif('sys.version_info[:2] < (3, 5)')
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def test_await_expr(self):
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parse("""async def foo():
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await x
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""")
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parse("""async def foo():
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def foo(): pass
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def foo(): pass
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await x
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""")
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parse("""async def foo(): return await a""")
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parse("""def foo():
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def foo(): pass
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async def foo(): await x
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""")
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self.invalid_syntax("await x")
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self.invalid_syntax("""def foo():
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await x""")
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self.invalid_syntax("""def foo():
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def foo(): pass
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async def foo(): pass
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await x
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""")
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@pytest.mark.skipif('sys.version_info[:2] < (3, 5)')
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def test_async_var(self):
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parse("""async = 1""")
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parse("""await = 1""")
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parse("""def async(): pass""")
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@pytest.mark.skipif('sys.version_info[:2] < (3, 5)')
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def test_async_with(self):
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parse("""async def foo():
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async for a in b: pass""")
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self.invalid_syntax("""def foo():
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async for a in b: pass""")
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@pytest.mark.skipif('sys.version_info[:2] < (3, 5)')
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def test_async_for(self):
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parse("""async def foo():
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async with a: pass""")
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self.invalid_syntax("""def foo():
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async with a: pass""")
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class TestRaiseChanges(GrammarTest):
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def test_2x_style_1(self):
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parse("raise")
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def test_2x_style_2(self):
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parse("raise E, V", version='2.7')
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def test_2x_style_3(self):
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parse("raise E, V, T", version='2.7')
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def test_2x_style_invalid_1(self):
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self.invalid_syntax("raise E, V, T, Z", version='2.7')
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def test_3x_style(self):
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parse("raise E1 from E2")
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def test_3x_style_invalid_1(self):
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self.invalid_syntax("raise E, V from E1")
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def test_3x_style_invalid_2(self):
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self.invalid_syntax("raise E from E1, E2")
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def test_3x_style_invalid_3(self):
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self.invalid_syntax("raise from E1, E2")
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def test_3x_style_invalid_4(self):
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self.invalid_syntax("raise E from")
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# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.testFuncdef
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class TestFunctionAnnotations(GrammarTest):
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def test_1(self):
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parse("""def f(x) -> list: pass""")
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def test_2(self):
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parse("""def f(x:int): pass""")
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def test_3(self):
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parse("""def f(*x:str): pass""")
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def test_4(self):
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parse("""def f(**x:float): pass""")
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def test_5(self):
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parse("""def f(x, y:1+2): pass""")
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def test_6(self):
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self.invalid_syntax("""def f(a, (b:1, c:2, d)): pass""")
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def test_7(self):
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self.invalid_syntax("""def f(a, (b:1, c:2, d), e:3=4, f=5, *g:6): pass""")
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def test_8(self):
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s = """def f(a, (b:1, c:2, d), e:3=4, f=5,
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*g:6, h:7, i=8, j:9=10, **k:11) -> 12: pass"""
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self.invalid_syntax(s)
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class TestExcept(GrammarTest):
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def test_new(self):
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s = """
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try:
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x
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except E as N:
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y"""
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parse(s)
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def test_old(self):
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s = """
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try:
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x
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except E, N:
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y"""
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parse(s, version='2.7')
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# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.testAtoms
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class TestSetLiteral(GrammarTest):
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def test_1(self):
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parse("""x = {'one'}""")
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def test_2(self):
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parse("""x = {'one', 1,}""")
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def test_3(self):
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parse("""x = {'one', 'two', 'three'}""")
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def test_4(self):
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parse("""x = {2, 3, 4,}""")
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class TestNumericLiterals(GrammarTest):
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def test_new_octal_notation(self):
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parse("""0o7777777777777""")
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self.invalid_syntax("""0o7324528887""")
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def test_new_binary_notation(self):
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parse("""0b101010""")
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self.invalid_syntax("""0b0101021""")
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class TestClassDef(GrammarTest):
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def test_new_syntax(self):
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parse("class B(t=7): pass")
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parse("class B(t, *args): pass")
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parse("class B(t, **kwargs): pass")
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parse("class B(t, *args, **kwargs): pass")
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parse("class B(t, y=9, *args, **kwargs): pass")
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class TestParserIdempotency(TestCase):
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"""A cut-down version of pytree_idempotency.py."""
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def test_extended_unpacking(self):
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parse("a, *b, c = x\n")
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parse("[*a, b] = x\n")
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parse("(z, *y, w) = m\n")
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parse("for *z, m in d: pass\n")
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class TestLiterals(GrammarTest):
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# It's not possible to get the same result when using \xaa in Python 2/3,
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# because it's treated differently.
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@pytest.mark.skipif('sys.version_info[0] < 3')
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def test_multiline_bytes_literals(self):
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s = """
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md5test(b"\xaa" * 80,
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(b"Test Using Larger Than Block-Size Key "
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b"and Larger Than One Block-Size Data"),
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"6f630fad67cda0ee1fb1f562db3aa53e")
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"""
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parse(s)
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def test_multiline_bytes_tripquote_literals(self):
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s = '''
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b"""
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN">
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"""
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'''
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parse(s)
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@pytest.mark.skipif('sys.version_info[0] < 3')
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def test_multiline_str_literals(self):
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s = """
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md5test("\xaa" * 80,
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("Test Using Larger Than Block-Size Key "
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"and Larger Than One Block-Size Data"),
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"6f630fad67cda0ee1fb1f562db3aa53e")
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"""
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parse(s)
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