chore: add GUT test framework

addons/gut/test/unit/test_gut_tracked_error.gd

@@ -0,0 +1,85 @@
+extends GutInternalTester
+
+func test_can_make_one():
+	var gte = GutTrackedError.new()
+	assert_not_null(gte)
+
+
+func test_contains_text_true_when_code_contains_text():
+	var gte = GutTrackedError.new()
+	gte.code = 'look here'
+	assert_true(gte.contains_text('ok he'))
+
+
+func test_contains_text_true_when_rationale_has_text():
+	var gte = GutTrackedError.new()
+	gte.rationale = 'ok, I looked'
+	assert_true(gte.contains_text(', i '))
+
+
+# -------------
+# push_error
+# -------------
+func test_is_push_error_false_by_default():
+	var gte = GutTrackedError.new()
+	assert_false(gte.is_push_error())
+
+
+func test_is_push_error_true_when_function_is_push_error():
+	var gte = GutTrackedError.new()
+	gte.function = "push_error"
+	assert_true(gte.is_push_error())
+
+
+func test_push_error_name():
+	var gte = GutTrackedError.new()
+	gte.function = "push_error"
+	assert_eq(gte.get_error_type_name(), 'push_error')
+
+
+# -------------
+# engine error
+# -------------
+func test_is_engine_error_false_by_default():
+	var gte = GutTrackedError.new()
+	assert_false(gte.is_engine_error())
+
+
+func test_is_engine_error_when_it_has_correct_error_type_and_not_push():
+	var gte = GutTrackedError.new()
+	gte.function = 'some_function_somewhere'
+	gte.error_type = 0
+	assert_true(gte.is_engine_error())
+
+
+func test_is_engine_error_false_when_push_warning():
+	var gte = GutTrackedError.new()
+	gte.function = 'push_warning'
+	assert_false(gte.is_engine_error())
+
+
+func test_engine_error_name():
+	var gte = GutTrackedError.new()
+	gte.function = 'some_function_somewhere'
+	gte.error_type = 1
+	assert_eq(gte.get_error_type_name(), 'engine-1')
+
+
+# -------------
+# push_warning
+# -------------
+func test_is_push_warning_false_by_default():
+	var gte = GutTrackedError.new()
+	assert_false(gte.is_push_warning())
+
+
+func test_is_push_warning_true_when_function_is_push_warning():
+	var gte = GutTrackedError.new()
+	gte.function = 'push_warning'
+	assert_true(gte.is_push_warning())
+
+
+func test_push_warning_name():
+	var gte = GutTrackedError.new()
+	gte.function = 'push_warning'
+	assert_eq(gte.get_error_type_name(), 'push_warning')