tests for special options

tests/test_special_options.py

+def test_without_special_options():
+    """
+    The "special options" of "config", "dump", and "dumps" are useful but they
+    prevent the user from being able to use them as official config args.
+    """
+    import scriptconfig as scfg
+    class MyConfig(scfg.DataConfig):
+        config = None
+
+    # Without using the ``cli`` classmethod there should be no issue with using
+    # these "special options".
+    config = MyConfig()
+    assert config.config is None
+
+    # But, if special options are enabled we cannot have options that conflict
+    import pytest
+    with pytest.raises(Exception):
+        config = MyConfig.cli(argv=['--config=foo'], special_options=True)
+
+    # But setting special_options=False will allow for this
+    config = MyConfig.cli(argv=['--config=foo'], special_options=False)
+    assert config.config == 'foo'