Add test for prepareDefaults

Contributes to issue CURA-5929.

plugins/LegacyProfileReader/tests/TestLegacyProfileReader.py

@@ -0,0 +1,31 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import pytest #To register tests with.
+
+from LegacyProfileReader import LegacyProfileReader #The module we're testing.
+
+@pytest.fixture
+def legacy_profile_reader():
+    return LegacyProfileReader()
+
+test_prepareDefaultsData = [
+    {
+        "defaults": {
+            "foo": "bar"
+        },
+        "cheese": "delicious"
+    },
+    {
+        "cat": "fluffy",
+        "dog": "floofy"
+    }
+]
+
+@pytest.mark.parametrize("input", test_prepareDefaultsData)
+def test_prepareDefaults(legacy_profile_reader, input):
+    output = legacy_profile_reader.prepareDefaults(input)
+    if "defaults" in input:
+        assert input["defaults"] == output
+    else:
+        assert output == {}