Some simple and proposed tests for the ScriptDB object. These pass OK with ./manage.py test, at least after running the server at least once.

src/tests/test_scripts_models.py

@@ -1,19 +1,58 @@
+try:
+    # this is an optimized version only available in later Django versions
+    from django.utils.unittest import TestCase
+except ImportError:
+    # if the first fails, we use the old version
+    from django.test import TestCase
+
+from src.scripts.models import ScriptDB, ObjectDoesNotExist
+from src.utils.create import create_script
+from src.scripts import DoNothing
 import unittest
+from django.conf import settings
 
-class TestScriptDB(unittest.TestCase):
-    def test___init__(self):
-        # script_d_b = ScriptDB(*args, **kwargs)
-        assert True # TODO: implement your test here
 
-    def test_at_typeclass_error(self):
-        # script_d_b = ScriptDB(*args, **kwargs)
-        # self.assertEqual(expected, script_d_b.at_typeclass_error())
-        assert True # TODO: implement your test here
+class TestScriptDB(TestCase):
+    "Check the singleton/static ScriptDB object works correctly"
+    def setUp(self):
+        self.scr = create_script(DoNothing)
+
+    def tearDown(self):
+        self.scr.delete()
+        del self.scr
 
     def test_delete(self):
-        # script_d_b = ScriptDB(*args, **kwargs)
-        # self.assertEqual(expected, script_d_b.delete())
-        assert True # TODO: implement your test here
+        "Check the script is removed from the database"
+        self.scr.delete()
+        self.assertFalse(self.scr in ScriptDB.objects.get_all_scripts())
+
+    def test_double_delete(self):
+        "What should happen? Isn't it already deleted?"
+        self.scr.delete()
+        self.scr.delete()
+
+    @unittest.skip("not implemented")
+    def test___init__fails(self):  # Users should be told not to do this
+        with self.assertRaises(Exception):
+            ScriptDB()
+
+    @unittest.skip("not implemented")
+    def test_deleted_script_fails_start(self):
+        "Would it ever be necessary to start a deleted script?"
+        self.scr.delete()
+        with self.assertRaises(ObjectDoesNotExist):  # See issue #509
+            self.scr.start()
+        # Check the script is not recreated as a side-effect
+        self.assertFalse(self.scr in ScriptDB.objects.get_all_scripts())
+        self.scr = create_script(DoNothing)  # for tearDown()
+
+    @unittest.skip("not implemented")
+    def test_deleted_script_is_invalid(self):
+        "Can deleted scripts be said to be valid?"
+        self.scr.delete()
+        self.assertFalse(self.scr.is_valid())  # assertRaises? See issue #509
+        self.scr = create_script(DoNothing)  # for tearDown()
+
 
 if __name__ == '__main__':
     unittest.main()