Updated factory so that `get_command()` raises an error if the factory has not yet been loaded.

scripttease/factory.py

@@ -43,7 +43,13 @@ class Factory(object):
 
         :rtype: scripttease.library.commands.Command | scripttease.library.commands.ItemizedCommand
 
+        :raise: RuntimeError
+        :raises: ``RuntimeError`` if the factory has not yet been loaded.
+
         """
+        if not self.is_loaded:
+            raise RuntimeError("Factory has not been loaded, so no commands are available. Call load() method first!")
+
         if not self.overlay.command_exists(name):
             log.warning("Command does not exist in %s overlay: %s" % (self._overlay, name))
             return None

tests/test_factory.py

@@ -1,3 +1,4 @@
+import pytest
 from scripttease.library.commands import Command, ItemizedCommand
 from scripttease.factory import Factory
 
@@ -5,6 +6,10 @@ from scripttease.factory import Factory
 class TestFactory(object):
 
     def test_get_command(self):
+        f = Factory("ubuntu")
+        with pytest.raises(RuntimeError):
+            f.get_command("testing")
+
         f = Factory("ubuntu")
         f.load()