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"""
Test cases for codeop.py
Nick Mathewson
"""
import unittest
from test.test_support import run_unittest, is_jython
from codeop import compile_command, PyCF_DONT_IMPLY_DEDENT
if is_jython:
import sys
import cStringIO
def unify_callables(d):
for n,v in d.items():
if callable(v):
d[n] = callable
return d
class CodeopTests(unittest.TestCase):
def assertValid(self, str, symbol='single'):
'''succeed iff str is a valid piece of code'''
if is_jython:
code = compile_command(str, "<input>", symbol)
self.assert_(code)
if symbol == "single":
d,r = {},{}
saved_stdout = sys.stdout
sys.stdout = cStringIO.StringIO()
try:
exec code in d
exec compile(str,"<input>","single") in r
finally:
sys.stdout = saved_stdout
elif symbol == 'eval':
ctx = {'a': 2}
d = { 'value': eval(code,ctx) }
r = { 'value': eval(str,ctx) }
self.assertEquals(unify_callables(r),unify_callables(d))
else:
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
# special case
if not is_jython:
self.assertEquals(compile_command(""),
compile("pass", "<input>", 'single',
PyCF_DONT_IMPLY_DEDENT))
self.assertEquals(compile_command("\n"),
compile("pass", "<input>", 'single',
PyCF_DONT_IMPLY_DEDENT))
else:
av("")
av("\n")
av("a = 1")
av("\na = 1")
av("a = 1\n")
av("a = 1\n\n")
av("\n\na = 1\n\n")
av("def x():\n pass\n")
av("if 1:\n pass\n")
av("\n\nif 1: pass\n")
av("\n\nif 1: pass\n\n")
av("def x():\n\n pass\n")
av("def x():\n pass\n \n")
av("def x():\n pass\n \n")
av("pass\n")
av("3**3\n")
av("if 9==3:\n pass\nelse:\n pass\n")
av("if 1:\n pass\n if 1:\n pass\n else:\n pass\n")
av("#a\n#b\na = 3\n")
av("#a\n\n \na=3\n")
av("a=3\n\n")
av("a = 9+ \\\n3")
av("3**3","eval")
av("(lambda z: \n z**3)","eval")
av("9+ \\\n3","eval")
av("9+ \\\n3\n","eval")
av("\n\na**3","eval")
av("\n \na**3","eval")
av("#a\n#b\na**3","eval")
def test_incomplete(self):
ai = self.assertIncomplete
ai("(a **")
ai("(a,b,")
ai("(a,b,(")
ai("(a,b,(")
ai("a = (")
ai("a = {")
ai("b + {")
ai("if 9==3:\n pass\nelse:")
ai("if 9==3:\n pass\nelse:\n")
ai("if 9==3:\n pass\nelse:\n pass")
ai("if 1:")
ai("if 1:\n")
ai("if 1:\n pass\n if 1:\n pass\n else:")
ai("if 1:\n pass\n if 1:\n pass\n else:\n")
ai("if 1:\n pass\n if 1:\n pass\n else:\n pass")
ai("def x():")
ai("def x():\n")
ai("def x():\n\n")
ai("def x():\n pass")
ai("def x():\n pass\n ")
ai("def x():\n pass\n ")
ai("\n\ndef x():\n pass")
ai("a = 9+ \\")
ai("a = 'a\\")
ai("a = '''xy")
ai("","eval")
ai("\n","eval")
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 b @")
ai("a ** @")
ai("a = ")
ai("a = 9 +")
ai("def x():\n\npass\n")
ai("\n\n if 1: pass\n\npass")
ai("a = 9+ \\\n")
ai("a = 'a\\ ")
ai("a = 'a\\\n")
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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