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"""
Test cases for codeop.py
Nick Mathewson
"""
import unittest
from test.test_support import run_unittest
from codeop import compile_command, PyCF_DONT_IMPLY_DEDENT
class CodeopTests(unittest.TestCase):
def assertValid(self, str, symbol='single'):
'''succeed iff str is a valid piece of code'''
expected = compile(str, "<input>", symbol, PyCF_DONT_IMPLY_DEDENT)
self.assertEquals( compile_command(str, "<input>", symbol), expected)
def assertIncomplete(self, str, symbol='single'):
'''succeed iff str is the start of a valid piece of code'''
self.assertEquals( compile_command(str, symbol=symbol), None)
def assertInvalid(self, str, symbol='single', is_syntax=1):
'''succeed iff str is the start of an invalid piece of code'''
try:
compile_command(str,symbol=symbol)
self.fail("No exception thrown for invalid code")
except SyntaxError:
self.assert_(is_syntax)
except OverflowError:
self.assert_(not is_syntax)
def test_valid(self):
av = self.assertValid
av("a = 1\n")
av("def x():\n pass\n")
av("pass\n")
av("3**3\n")
av("if 9==3:\n pass\nelse:\n pass\n")
av("#a\n#b\na = 3\n")
av("#a\n\n \na=3\n")
av("a=3\n\n")
# special case
self.assertEquals(compile_command(""),
compile("pass", "<input>", 'single',
PyCF_DONT_IMPLY_DEDENT))
av("3**3","eval")
av("(lambda z: \n z**3)","eval")
av("#a\n#b\na**3","eval")
def test_incomplete(self):
ai = self.assertIncomplete
ai("(a **")
ai("def x():\n")
ai("(a,b,")
ai("(a,b,(")
ai("(a,b,(")
ai("if 9==3:\n pass\nelse:\n")
ai("if 9==3:\n pass\nelse:\n pass")
ai("a = (")
ai("a = 9+ \\")
ai("(","eval")
ai("(\n\n\n","eval")
ai("(9+","eval")
ai("9+ \\","eval")
ai("lambda z: \\","eval")
def test_invalid(self):
ai = self.assertInvalid
ai("a b")
ai("a = ")
ai("a = 9 +")
ai("a = 1","eval")
ai("a = (","eval")
ai("]","eval")
ai("())","eval")
ai("[}","eval")
ai("9+","eval")
ai("lambda z:","eval")
ai("a b","eval")
def test_filename(self):
self.assertEquals(compile_command("a = 1\n", "abc").co_filename,
compile("a = 1\n", "abc", 'single').co_filename)
self.assertNotEquals(compile_command("a = 1\n", "abc").co_filename,
compile("a = 1\n", "def", 'single').co_filename)
def test_main():
run_unittest(CodeopTests)
if __name__ == "__main__":
test_main()
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