From 3e92e7a3ab862901e473e5f3a05d08d9af185f68 Mon Sep 17 00:00:00 2001
From: mike <michael.jmontcalm@gmail.com>
Date: Mon, 06 Apr 2009 02:41:41 +0000
Subject: Create chain action

---
(limited to 'src/sugar/tutorius/tests')

diff --git a/src/sugar/tutorius/tests/actiontests.py b/src/sugar/tutorius/tests/actiontests.py
index 2a60a65..76a6655 100644
--- a/src/sugar/tutorius/tests/actiontests.py
+++ b/src/sugar/tutorius/tests/actiontests.py
@@ -41,5 +41,57 @@ class PropsTest(unittest.TestCase):
         
         assert prop.get_properties() == ['a'], "Action does not contain property 'a'"
     
+from sugar.tutorius.actions import ChainAction
+
+class ChainTester(Action):
+    def __init__(self, witness):
+        self._witness = witness
+
+    def do(self, **kwargs):
+        self._witness.append([self,"do"])
+
+    def undo(self):
+        self._witness.append([self,"undo"])
+
+class ChainActionTest(unittest.TestCase):
+    """Tester for ChainAction"""
+    def test_empty(self):
+        """If the expected empty behavior (do nothing) changes 
+        and starts throwing exceptions, this will flag it"""
+        a = ChainAction()
+        a.do()
+        a.undo()
+
+    def test_order(self):
+        witness = []
+        first = ChainTester(witness)
+        second = ChainTester(witness)
+
+        c = ChainAction(first, second)
+        assert witness == [], "Actions should not be triggered on init"""
+        c.do()
+
+        assert witness[0][0] is first, "First triggered action must be 'first'"
+        assert witness[0][1] is "do", "Action do() should be triggered"
+
+        assert witness[1][0] is second, "second triggered action must be 'second'"
+        assert witness[1][1] is "do", "Action do() should be triggered"
+
+        assert len(witness) is 2, "Two actions should give 2 do's"
+
+        #empty the witness list
+        while len(witness):
+            rm = witness.pop()
+
+        c.undo()
+        assert witness[1][0] is first, "second triggered action must be 'first'"
+        assert witness[1][1] is "undo", "Action undo() should be triggered"
+
+        assert witness[0][0] is second, "first triggered action must be 'second'"
+        assert witness[0][1] is "undo", "Action undo() should be triggered"
+
+        assert len(witness) is 2, "Two actions should give 2 undo's"
+
+        
 if __name__ == "__main__":
-    unittest.main()
\ No newline at end of file
+    unittest.main()
--
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