Patch #442866: Tests for codeop.py.

Lib/test/test_codeop.py

@@ -0,0 +1,90 @@
+"""
+   Test cases for codeop.py
+   Nick Mathewson
+"""
+import unittest
+from test_support import run_unittest
+
+from codeop import compile_command
+
+class CodeopTests(unittest.TestCase):
+
+    def assertValid(self, str, symbol='single'):
+        '''succeed iff str is a valid piece of code'''
+        expected = compile(str, "<input>", symbol)
+        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'))
+
+        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)
+
+run_unittest(CodeopTests)