chore: add GUT test framework

addons/gut/test/unit/test_warnings_manager.gd

@@ -0,0 +1,50 @@
+extends GutTest
+
+var WarningsManager = load('res://addons/gut/warnings_manager.gd')
+
+func after_each():
+	WarningsManager.reset_warnings()
+
+
+func test_warnings_manager_is_not_disabled_by_default():
+	assert_false(WarningsManager.disabled)
+
+
+func test_cannot_disable_warnings_manager():
+	var value = WarningsManager.disabled
+	WarningsManager.disabled = !value
+	assert_eq(WarningsManager.disabled, value)
+
+
+func test_replace_warnings_value():
+	var wm = WarningsManager.new()
+	var d = wm.create_warnings_dictionary_from_project_settings()
+	d.unused_signal = WarningsManager.WARN
+	var d2 = wm.replace_warnings_values(d, 1, 0)
+	assert_ne(d, d2)
+	assert_eq(d2.unused_signal, 0)
+	assert_eq(d.unused_signal, 1)
+
+
+func test_exclude_gut_sets_directory_rules_entry_to_exclude():
+	WarningsManager.exclude_gut(true)
+	var val = ProjectSettings.get(WarningsManager.DIRECTORY_RULES)
+	assert_has(val, 'res://addons/gut')
+	if(is_passing()):
+		assert_eq(val['res://addons/gut'], WarningsManager.DIRECTORY_EXCLUDE)
+
+
+func test_include_gut_sets_directory_rules_entry_to_include():
+	WarningsManager.exclude_gut(false)
+	var val = ProjectSettings.get(WarningsManager.DIRECTORY_RULES)
+	assert_has(val, 'res://addons/gut')
+	if(is_passing()):
+		assert_eq(val['res://addons/gut'], WarningsManager.DIRECTORY_INCLUDE)
+
+
+func test_exclude_gut_dynamic_files_sets_directory_rules():
+	WarningsManager.exclude_dynamic_files()
+	var val = ProjectSettings.get(WarningsManager.DIRECTORY_RULES)
+	assert_has(val, WarningsManager.DYNAMIC_FILES_PATH)
+	if(is_passing()):
+		assert_eq(val[WarningsManager.DYNAMIC_FILES_PATH], WarningsManager.DIRECTORY_EXCLUDE)