interval lesson type doesn't respect indexes argument

[Marten de Vries]

The interval lesson type doesn't respect the indexes argument it gets passed via its constructor. This makes it unable to work together with list modifiers. (e.g. random order, only hard words).

You can reproduce this by just starting OT 3.0, making a simple word lesson (een =one, twee = two, etc.), starting a lesson selecting the random list modifier, and seeing that the words in fact aren't shuffled.

[Marten de Vries (marten-de-vries)]

I found this while working on a unit test, which I'll push to the branch soon. It'll fail because I don't want to look in this bug directly, but can at least provide feedback on the status of this bug.

[Marten de Vries (marten-de-vries)]

Test case added:

.............................................F......................................
======================================================================
FAIL: testEmptyIndexes (test.TestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "modules/org/openteacher/lessonTypes/test/test.py", line 48, in testEmptyIndexes
    lessonType.start()
  File "modules/org/openteacher/lessonTypes/interval/interval.py", line 72, in start
    self._sendNext()
  File "modules/org/openteacher/lessonTypes/interval/interval.py", line 164, in _sendNext
    self.newItem.send(self._modifyItem(item))
  File "modules/org/openteacher/event/event.py", line 35, in send
    handler(*args, **kwargs)
  File "modules/org/openteacher/lessonTypes/test/test.py", line 44, in newItem
    self.assertTrue(False, msg="newItem should not be called when an empty indexes list is passed.")
AssertionError: False is not True : newItem should not be called when an empty indexes list is passed.

----------------------------------------------------------------------
Ran 84 tests in 0.346s

FAILED (failures=1)

[Marten de Vries (marten-de-vries)]

........................................................................................................................................
----------------------------------------------------------------------
Ran 136 tests in 25.858s

OK

--> Fixed.