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330 lines
8.7 KiB
Python
330 lines
8.7 KiB
Python
"""
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Test cases for codeop.py
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Nick Mathewson
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"""
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import unittest
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import warnings
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from test.support import warnings_helper
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from textwrap import dedent
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from codeop import compile_command, PyCF_DONT_IMPLY_DEDENT
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class CodeopTests(unittest.TestCase):
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def assertValid(self, str, symbol='single'):
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'''succeed iff str is a valid piece of code'''
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expected = compile(str, "<input>", symbol, PyCF_DONT_IMPLY_DEDENT)
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self.assertEqual(compile_command(str, "<input>", symbol), expected)
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def assertIncomplete(self, str, symbol='single'):
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'''succeed iff str is the start of a valid piece of code'''
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self.assertEqual(compile_command(str, symbol=symbol), None)
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def assertInvalid(self, str, symbol='single', is_syntax=1):
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'''succeed iff str is the start of an invalid piece of code'''
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try:
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compile_command(str,symbol=symbol)
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self.fail("No exception raised for invalid code")
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except SyntaxError:
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self.assertTrue(is_syntax)
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except OverflowError:
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self.assertTrue(not is_syntax)
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def test_valid(self):
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av = self.assertValid
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# special case
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self.assertEqual(compile_command(""),
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compile("pass", "<input>", 'single',
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PyCF_DONT_IMPLY_DEDENT))
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self.assertEqual(compile_command("\n"),
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compile("pass", "<input>", 'single',
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PyCF_DONT_IMPLY_DEDENT))
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av("a = 1")
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av("\na = 1")
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av("a = 1\n")
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av("a = 1\n\n")
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av("\n\na = 1\n\n")
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av("def x():\n pass\n")
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av("if 1:\n pass\n")
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av("\n\nif 1: pass\n")
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av("\n\nif 1: pass\n\n")
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av("def x():\n\n pass\n")
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av("def x():\n pass\n \n")
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av("def x():\n pass\n \n")
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av("pass\n")
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av("3**3\n")
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av("if 9==3:\n pass\nelse:\n pass\n")
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av("if 1:\n pass\n if 1:\n pass\n else:\n pass\n")
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av("#a\n#b\na = 3\n")
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av("#a\n\n \na=3\n")
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av("a=3\n\n")
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av("a = 9+ \\\n3")
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av("3**3","eval")
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av("(lambda z: \n z**3)","eval")
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av("9+ \\\n3","eval")
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av("9+ \\\n3\n","eval")
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av("\n\na**3","eval")
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av("\n \na**3","eval")
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av("#a\n#b\na**3","eval")
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av("\n\na = 1\n\n")
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av("\n\nif 1: a=1\n\n")
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av("if 1:\n pass\n if 1:\n pass\n else:\n pass\n")
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av("#a\n\n \na=3\n\n")
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av("\n\na**3","eval")
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av("\n \na**3","eval")
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av("#a\n#b\na**3","eval")
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av("def f():\n try: pass\n finally: [x for x in (1,2)]\n")
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av("def f():\n pass\n#foo\n")
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av("@a.b.c\ndef f():\n pass\n")
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def test_incomplete(self):
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ai = self.assertIncomplete
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ai("(a **")
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ai("(a,b,")
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ai("(a,b,(")
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ai("(a,b,(")
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ai("a = (")
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ai("a = {")
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ai("b + {")
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ai("print([1,\n2,")
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ai("print({1:1,\n2:3,")
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ai("print((1,\n2,")
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ai("if 9==3:\n pass\nelse:")
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ai("if 9==3:\n pass\nelse:\n")
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ai("if 9==3:\n pass\nelse:\n pass")
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ai("if 1:")
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ai("if 1:\n")
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ai("if 1:\n pass\n if 1:\n pass\n else:")
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ai("if 1:\n pass\n if 1:\n pass\n else:\n")
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ai("if 1:\n pass\n if 1:\n pass\n else:\n pass")
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ai("def x():")
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ai("def x():\n")
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ai("def x():\n\n")
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ai("def x():\n pass")
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ai("def x():\n pass\n ")
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ai("def x():\n pass\n ")
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ai("\n\ndef x():\n pass")
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ai("a = 9+ \\")
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ai("a = 'a\\")
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ai("a = '''xy")
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ai("","eval")
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ai("\n","eval")
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ai("(","eval")
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ai("(9+","eval")
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ai("9+ \\","eval")
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ai("lambda z: \\","eval")
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ai("if True:\n if True:\n if True: \n")
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ai("@a(")
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ai("@a(b")
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ai("@a(b,")
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ai("@a(b,c")
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ai("@a(b,c,")
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ai("from a import (")
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ai("from a import (b")
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ai("from a import (b,")
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ai("from a import (b,c")
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ai("from a import (b,c,")
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ai("[")
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ai("[a")
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ai("[a,")
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ai("[a,b")
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ai("[a,b,")
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ai("{")
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ai("{a")
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ai("{a:")
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ai("{a:b")
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ai("{a:b,")
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ai("{a:b,c")
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ai("{a:b,c:")
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ai("{a:b,c:d")
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ai("{a:b,c:d,")
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ai("a(")
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ai("a(b")
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ai("a(b,")
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ai("a(b,c")
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ai("a(b,c,")
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ai("a[")
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ai("a[b")
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ai("a[b,")
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ai("a[b:")
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ai("a[b:c")
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ai("a[b:c:")
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ai("a[b:c:d")
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ai("def a(")
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ai("def a(b")
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ai("def a(b,")
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ai("def a(b,c")
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ai("def a(b,c,")
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ai("(")
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ai("(a")
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ai("(a,")
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ai("(a,b")
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ai("(a,b,")
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ai("if a:\n pass\nelif b:")
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ai("if a:\n pass\nelif b:\n pass\nelse:")
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ai("while a:")
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ai("while a:\n pass\nelse:")
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ai("for a in b:")
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ai("for a in b:\n pass\nelse:")
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ai("try:")
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ai("try:\n pass\nexcept:")
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ai("try:\n pass\nfinally:")
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ai("try:\n pass\nexcept:\n pass\nfinally:")
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ai("with a:")
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ai("with a as b:")
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ai("class a:")
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ai("class a(")
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ai("class a(b")
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ai("class a(b,")
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ai("class a():")
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ai("[x for")
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ai("[x for x in")
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ai("[x for x in (")
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ai("(x for")
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ai("(x for x in")
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ai("(x for x in (")
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ai('a = f"""')
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ai('a = \\')
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def test_invalid(self):
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ai = self.assertInvalid
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ai("a b")
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ai("a @")
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ai("a b @")
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ai("a ** @")
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ai("a = ")
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ai("a = 9 +")
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ai("def x():\n\npass\n")
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ai("\n\n if 1: pass\n\npass")
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ai("a = 9+ \\\n")
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ai("a = 'a\\ ")
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ai("a = 'a\\\n")
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ai("a = 1","eval")
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ai("]","eval")
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ai("())","eval")
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ai("[}","eval")
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ai("9+","eval")
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ai("lambda z:","eval")
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ai("a b","eval")
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ai("return 2.3")
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ai("if (a == 1 and b = 2): pass")
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ai("del 1")
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ai("del (1,)")
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ai("del [1]")
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ai("del '1'")
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ai("[i for i in range(10)] = (1, 2, 3)")
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def test_invalid_exec(self):
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ai = self.assertInvalid
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ai("raise = 4", symbol="exec")
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ai('def a-b', symbol='exec')
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ai('await?', symbol='exec')
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ai('=!=', symbol='exec')
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ai('a await raise b', symbol='exec')
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ai('a await raise b?+1', symbol='exec')
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def test_filename(self):
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self.assertEqual(compile_command("a = 1\n", "abc").co_filename,
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compile("a = 1\n", "abc", 'single').co_filename)
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self.assertNotEqual(compile_command("a = 1\n", "abc").co_filename,
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compile("a = 1\n", "def", 'single').co_filename)
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def test_warning(self):
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# Test that the warning is only returned once.
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with warnings_helper.check_warnings(
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('"is" with \'str\' literal', SyntaxWarning),
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('"\\\\e" is an invalid escape sequence', SyntaxWarning),
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) as w:
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compile_command(r"'\e' is 0")
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self.assertEqual(len(w.warnings), 2)
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# bpo-41520: check SyntaxWarning treated as an SyntaxError
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with warnings.catch_warnings(), self.assertRaises(SyntaxError):
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warnings.simplefilter('error', SyntaxWarning)
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compile_command('1 is 1', symbol='exec')
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# Check SyntaxWarning treated as an SyntaxError
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with warnings.catch_warnings(), self.assertRaises(SyntaxError):
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warnings.simplefilter('error', SyntaxWarning)
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compile_command(r"'\e'", symbol='exec')
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def test_incomplete_warning(self):
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertIncomplete("'\\e' + (")
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self.assertEqual(w, [])
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def test_invalid_warning(self):
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertInvalid("'\\e' 1")
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self.assertEqual(len(w), 1)
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self.assertEqual(w[0].category, SyntaxWarning)
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self.assertRegex(str(w[0].message), 'invalid escape sequence')
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self.assertEqual(w[0].filename, '<input>')
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def assertSyntaxErrorMatches(self, code, message):
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with self.subTest(code):
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with self.assertRaisesRegex(SyntaxError, message):
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compile_command(code, symbol='exec')
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def test_syntax_errors(self):
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self.assertSyntaxErrorMatches(
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dedent("""\
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def foo(x,x):
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pass
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"""), "duplicate parameter 'x' in function definition")
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if __name__ == "__main__":
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unittest.main()
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