Renamed some tests and removed references to modeltests/regressiontests.

tests/template_tests/smartif.py

@@ -0,0 +1,53 @@
+from django.template.smartif import IfParser
+from django.utils import unittest
+
+class SmartIfTests(unittest.TestCase):
+
+    def assertCalcEqual(self, expected, tokens):
+        self.assertEqual(expected, IfParser(tokens).parse().eval({}))
+
+    # We only test things here that are difficult to test elsewhere
+    # Many other tests are found in the main tests for builtin template tags
+    # Test parsing via the printed parse tree
+    def test_not(self):
+        var = IfParser(["not", False]).parse()
+        self.assertEqual("(not (literal False))", repr(var))
+        self.assertTrue(var.eval({}))
+
+        self.assertFalse(IfParser(["not", True]).parse().eval({}))
+
+    def test_or(self):
+        var = IfParser([True, "or", False]).parse()
+        self.assertEqual("(or (literal True) (literal False))", repr(var))
+        self.assertTrue(var.eval({}))
+
+    def test_in(self):
+        list_ = [1,2,3]
+        self.assertCalcEqual(True, [1, 'in', list_])
+        self.assertCalcEqual(False, [1, 'in', None])
+        self.assertCalcEqual(False, [None, 'in', list_])
+
+    def test_not_in(self):
+        list_ = [1,2,3]
+        self.assertCalcEqual(False, [1, 'not', 'in', list_])
+        self.assertCalcEqual(True, [4, 'not', 'in', list_])
+        self.assertCalcEqual(False, [1, 'not', 'in', None])
+        self.assertCalcEqual(True, [None, 'not', 'in', list_])
+
+    def test_precedence(self):
+        # (False and False) or True == True   <- we want this one, like Python
+        # False and (False or True) == False
+        self.assertCalcEqual(True, [False, 'and', False, 'or', True])
+
+        # True or (False and False) == True   <- we want this one, like Python
+        # (True or False) and False == False
+        self.assertCalcEqual(True, [True, 'or', False, 'and', False])
+
+        # (1 or 1) == 2  -> False
+        # 1 or (1 == 2)  -> True   <- we want this one
+        self.assertCalcEqual(True, [1, 'or', 1, '==', 2])
+
+        self.assertCalcEqual(True, [True, '==', True, 'or', True, '==', False])
+
+        self.assertEqual("(or (and (== (literal 1) (literal 2)) (literal 3)) (literal 4))",
+                         repr(IfParser([1, '==', 2, 'and', 3, 'or', 4]).parse()))