RNA defaults test

Alternative to T32894, simple test which creates new data and compares with RNA defaults.

Can be used to keep the values in sync without having to maintain a large set of defines.

tests/python/bl_rna_defaults.py

@@ -0,0 +1,117 @@
+# Apache License, Version 2.0
+
+# ./blender.bin --background -noaudio --factory-startup --python tests/python/bl_rna_defaults.py
+
+import bpy
+
+DUMMY_NAME = "Untitled"
+DUMMY_PATH = __file__
+GLOBALS = {
+    "error_num": 0,
+    }
+
+
+def validate_defaults(test_id, o):
+
+    def warning(prop_id, val_real, val_default):
+        print("Error %s: '%s.%s' is:%r, expected:%r" %
+              (test_id, o.__class__.__name__, prop_id, val_real, val_default))
+        GLOBALS["error_num"] += 1
+
+    properties = type(o).bl_rna.properties.items()
+    for prop_id, prop in properties:
+        if prop_id == "rna_type":
+            continue
+        prop_type = prop.type
+        if prop_type in {'STRING', 'COLLECTION'}:
+            continue
+
+        if prop_type == 'POINTER':
+            # traverse down pointers if they're set
+            val_real = getattr(o, prop_id)
+            if (val_real is not None) and (not isinstance(val_real, bpy.types.ID)):
+                validate_defaults("%s.%s" % (test_id, prop_id), val_real)
+        elif prop_type in {'INT', 'BOOL'}:
+            array_length = prop.array_length
+            if array_length == 0:
+                val_real = getattr(o, prop_id)
+                val_default = prop.default
+                if val_real != val_default:
+                    warning(prop_id, val_real, val_default)
+            else:
+                pass  # TODO, array defaults
+        elif prop_type == 'FLOAT':
+            array_length = prop.array_length
+            if array_length == 0:
+                val_real = getattr(o, prop_id)
+                val_default = prop.default
+                if val_real != val_default:
+                    warning(prop_id, val_real, val_default)
+            else:
+                pass  # TODO, array defaults
+        elif prop_type == 'ENUM':
+            val_real = getattr(o, prop_id)
+            if prop.is_enum_flag:
+                val_default = prop.default_flag
+            else:
+                val_default = prop.default
+            if val_real != val_default:
+                warning(prop_id, val_real, val_default)
+
+        # print(prop_id, prop_type)
+
+
+def _test_id_gen(data_attr, args_create=(DUMMY_NAME,), create_method="new"):
+    def test_gen(test_id):
+        id_collection = getattr(bpy.data, data_attr)
+        create_fn = getattr(id_collection, create_method)
+        o = create_fn(*args_create)
+        o.user_clear()
+        validate_defaults(test_id, o)
+        id_collection.remove(o)
+    return test_gen
+
+
+test_Action = _test_id_gen("actions")
+test_Armature = _test_id_gen("armatures")
+test_Camera = _test_id_gen("cameras")
+test_Group = _test_id_gen("groups")
+test_Lattice = _test_id_gen("lattices")
+test_LineStyle = _test_id_gen("linestyles")
+test_Mask = _test_id_gen("masks")
+test_Material = _test_id_gen("materials")
+test_Mesh = _test_id_gen("meshes")
+test_MetaBall = _test_id_gen("metaballs")
+test_MovieClip = _test_id_gen("movieclips", args_create=(DUMMY_PATH,), create_method="load")
+test_Object = _test_id_gen("objects", args_create=(DUMMY_NAME, None))
+test_Palette = _test_id_gen("palettes")
+test_Particle = _test_id_gen("particles")
+test_Scene = _test_id_gen("scenes")
+test_Sound = _test_id_gen("sounds", args_create=(DUMMY_PATH,), create_method="load")
+test_Speaker = _test_id_gen("speakers")
+test_Text = _test_id_gen("texts")
+test_VectorFont = _test_id_gen("fonts", args_create=("<builtin>",), create_method="load")
+test_World = _test_id_gen("worlds")
+
+ns = globals()
+for t in bpy.data.curves.bl_rna.functions["new"].parameters["type"].enum_items.keys():
+    ns["test_Curve_%s" % t] = _test_id_gen("curves", args_create=(DUMMY_NAME, t))
+for t in bpy.data.lamps.bl_rna.functions["new"].parameters["type"].enum_items.keys():
+    ns["test_Lamp_%s" % t] = _test_id_gen("lamps", args_create=(DUMMY_NAME, t))
+# types are a dynamic enum, have to hard-code.
+for t in "ShaderNodeTree", "CompositorNodeTree", "TextureNodeTree":
+    ns["test_NodeGroup_%s" % t] = _test_id_gen("node_groups", args_create=(DUMMY_NAME, t))
+for t in bpy.data.textures.bl_rna.functions["new"].parameters["type"].enum_items.keys():
+    ns["test_Texture_%s" % t] = _test_id_gen("textures", args_create=(DUMMY_NAME, t))
+del ns
+
+
+def main():
+    for fn_id, fn_val in sorted(globals().items()):
+        if fn_id.startswith("test_") and callable(fn_val):
+            fn_val(fn_id)
+
+    print("Error (total): %d" % GLOBALS["error_num"])
+
+if __name__ == "__main__":
+    main()