diff options
Diffstat (limited to 'lib/python2.7/lib2to3/tests/test_parser.py')
| -rw-r--r-- | lib/python2.7/lib2to3/tests/test_parser.py | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/lib/python2.7/lib2to3/tests/test_parser.py b/lib/python2.7/lib2to3/tests/test_parser.py deleted file mode 100644 index 2602381..0000000 --- a/lib/python2.7/lib2to3/tests/test_parser.py +++ /dev/null @@ -1,227 +0,0 @@ -"""Test suite for 2to3's parser and grammar files. - -This is the place to add tests for changes to 2to3's grammar, such as those -merging the grammars for Python 2 and 3. In addition to specific tests for -parts of the grammar we've changed, we also make sure we can parse the -test_grammar.py files from both Python 2 and Python 3. -""" - -from __future__ import with_statement - -# Testing imports -from . import support -from .support import driver, test_dir - -# Python imports -import os -import sys - -# Local imports -from lib2to3.pgen2 import tokenize -from ..pgen2.parse import ParseError -from lib2to3.pygram import python_symbols as syms - - -class TestDriver(support.TestCase): - - def test_formfeed(self): - s = """print 1\n\x0Cprint 2\n""" - t = driver.parse_string(s) - self.assertEqual(t.children[0].children[0].type, syms.print_stmt) - self.assertEqual(t.children[1].children[0].type, syms.print_stmt) - - -class GrammarTest(support.TestCase): - def validate(self, code): - support.parse_string(code) - - def invalid_syntax(self, code): - try: - self.validate(code) - except ParseError: - pass - else: - raise AssertionError("Syntax shouldn't have been valid") - - -class TestRaiseChanges(GrammarTest): - def test_2x_style_1(self): - self.validate("raise") - - def test_2x_style_2(self): - self.validate("raise E, V") - - def test_2x_style_3(self): - self.validate("raise E, V, T") - - def test_2x_style_invalid_1(self): - self.invalid_syntax("raise E, V, T, Z") - - def test_3x_style(self): - self.validate("raise E1 from E2") - - def test_3x_style_invalid_1(self): - self.invalid_syntax("raise E, V from E1") - - def test_3x_style_invalid_2(self): - self.invalid_syntax("raise E from E1, E2") - - def test_3x_style_invalid_3(self): - self.invalid_syntax("raise from E1, E2") - - def test_3x_style_invalid_4(self): - self.invalid_syntax("raise E from") - - -# Adapated from Python 3's Lib/test/test_grammar.py:GrammarTests.testFuncdef -class TestFunctionAnnotations(GrammarTest): - def test_1(self): - self.validate("""def f(x) -> list: pass""") - - def test_2(self): - self.validate("""def f(x:int): pass""") - - def test_3(self): - self.validate("""def f(*x:str): pass""") - - def test_4(self): - self.validate("""def f(**x:float): pass""") - - def test_5(self): - self.validate("""def f(x, y:1+2): pass""") - - def test_6(self): - self.validate("""def f(a, (b:1, c:2, d)): pass""") - - def test_7(self): - self.validate("""def f(a, (b:1, c:2, d), e:3=4, f=5, *g:6): pass""") - - def test_8(self): - s = """def f(a, (b:1, c:2, d), e:3=4, f=5, - *g:6, h:7, i=8, j:9=10, **k:11) -> 12: pass""" - self.validate(s) - - -class TestExcept(GrammarTest): - def test_new(self): - s = """ - try: - x - except E as N: - y""" - self.validate(s) - - def test_old(self): - s = """ - try: - x - except E, N: - y""" - self.validate(s) - - -# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.testAtoms -class TestSetLiteral(GrammarTest): - def test_1(self): - self.validate("""x = {'one'}""") - - def test_2(self): - self.validate("""x = {'one', 1,}""") - - def test_3(self): - self.validate("""x = {'one', 'two', 'three'}""") - - def test_4(self): - self.validate("""x = {2, 3, 4,}""") - - -class TestNumericLiterals(GrammarTest): - def test_new_octal_notation(self): - self.validate("""0o7777777777777""") - self.invalid_syntax("""0o7324528887""") - - def test_new_binary_notation(self): - self.validate("""0b101010""") - self.invalid_syntax("""0b0101021""") - - -class TestClassDef(GrammarTest): - def test_new_syntax(self): - self.validate("class B(t=7): pass") - self.validate("class B(t, *args): pass") - self.validate("class B(t, **kwargs): pass") - self.validate("class B(t, *args, **kwargs): pass") - self.validate("class B(t, y=9, *args, **kwargs): pass") - - -class TestParserIdempotency(support.TestCase): - - """A cut-down version of pytree_idempotency.py.""" - - def test_all_project_files(self): - if sys.platform.startswith("win"): - # XXX something with newlines goes wrong on Windows. - return - for filepath in support.all_project_files(): - with open(filepath, "rb") as fp: - encoding = tokenize.detect_encoding(fp.readline)[0] - self.assertTrue(encoding is not None, - "can't detect encoding for %s" % filepath) - with open(filepath, "r") as fp: - source = fp.read() - source = source.decode(encoding) - tree = driver.parse_string(source) - new = unicode(tree) - if diff(filepath, new, encoding): - self.fail("Idempotency failed: %s" % filepath) - - def test_extended_unpacking(self): - driver.parse_string("a, *b, c = x\n") - driver.parse_string("[*a, b] = x\n") - driver.parse_string("(z, *y, w) = m\n") - driver.parse_string("for *z, m in d: pass\n") - -class TestLiterals(GrammarTest): - - def validate(self, s): - driver.parse_string(support.dedent(s) + "\n\n") - - def test_multiline_bytes_literals(self): - s = """ - md5test(b"\xaa" * 80, - (b"Test Using Larger Than Block-Size Key " - b"and Larger Than One Block-Size Data"), - "6f630fad67cda0ee1fb1f562db3aa53e") - """ - self.validate(s) - - def test_multiline_bytes_tripquote_literals(self): - s = ''' - b""" - <?xml version="1.0" encoding="UTF-8"?> - <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"> - """ - ''' - self.validate(s) - - def test_multiline_str_literals(self): - s = """ - md5test("\xaa" * 80, - ("Test Using Larger Than Block-Size Key " - "and Larger Than One Block-Size Data"), - "6f630fad67cda0ee1fb1f562db3aa53e") - """ - self.validate(s) - - -def diff(fn, result, encoding): - f = open("@", "w") - try: - f.write(result.encode(encoding)) - finally: - f.close() - try: - fn = fn.replace('"', '\\"') - return os.system('diff -u "%s" @' % fn) - finally: - os.remove("@") |