GD-579: Minimize warnings of testsuite resource loading (#587)

# Why
<!-- Enter a clean description why we need this changeset -->


# What
<!-- Describe exactly what you have changed and what the effects are -->

addons/gdUnit4/test/GdUnitTestResourceLoader.gd

@@ -62,6 +62,11 @@ static func load_cs_script(resource_path :String, debug_write := false) -> Scrip
 
 
 static func load_gd_script(resource_path :String, debug_write := false) -> GDScript:
+		# grap current level
+	var unsafe_method_access: Variant = ProjectSettings.get_setting("debug/gdscript/warnings/unsafe_method_access")
+	# disable and load the script
+	ProjectSettings.set_setting("debug/gdscript/warnings/unsafe_method_access", 0)
+
 	var script := GDScript.new()
 	script.source_code = GdUnitFileAccess.resource_as_string(resource_path)
 	var script_resource_path := resource_path.replace(resource_path.get_extension(), "gd")
@@ -78,4 +83,6 @@ static func load_gd_script(resource_path :String, debug_write := false) -> GDScr
 	var error := script.reload()
 	if error != OK:
 		push_error("Errors on loading script %s. Error: %s" % [resource_path, error_string(error)])
+	ProjectSettings.set_setting("debug/gdscript/warnings/unsafe_method_access", unsafe_method_access)
 	return script
+	#@warning_ignore("unsafe_cast")

addons/gdUnit4/test/core/resources/testsuites/TestSuiteFailAddChildStageBefore.resource

@@ -2,6 +2,7 @@
 extends GdUnitTestSuite
 
 func before() -> void:
+	@warning_ignore("unsafe_cast")
 	add_child(auto_free(Node.new()) as Node)
 
 func test_case1() -> void:

addons/gdUnit4/test/core/resources/testsuites/TestSuiteFuzzedMetricsTest.resource

@@ -48,7 +48,7 @@ func after() -> void:
 		.is_equal(1)
 
 	for test_case :String in _metrics.keys():
-		var statistics := _metrics[test_case] as TestCaseStatistics
+		var statistics: TestCaseStatistics = _metrics[test_case]
 		assert_int(statistics._testcase_before_called)\
 			.override_failure_message("Expect before_test called %s times but is %s for test case %s" % [statistics._expected_calls, statistics._testcase_before_called, test_case])\
 			.is_equal(statistics._expected_calls)

addons/gdUnit4/test/core/resources/testsuites/TestSuiteParameterizedMetricsTest.resource

@@ -46,7 +46,7 @@ func after() -> void:
 		.is_equal(1)
 
 	for test_case :String in _metrics.keys():
-		var statistics := _metrics[test_case] as TestCaseStatistics
+		var statistics: TestCaseStatistics = _metrics[test_case]
 		assert_int(statistics._testcase_before_called)\
 			.override_failure_message("Expect before_test called %s times but is %s for test case %s" % [statistics._expected_calls, statistics._testcase_before_called, test_case])\
 			.is_equal(statistics._expected_calls)

addons/gdUnit4/test/core/resources/testsuites/TestSuiteParameterizedTests.resource

@@ -44,7 +44,7 @@ func after() -> void:
 		.is_equal(1)
 
 	for test_case :String in _metrics.keys():
-		var statistics := _metrics[test_case] as TestCaseStatistics
+		var statistics: TestCaseStatistics = _metrics[test_case]
 		assert_int(statistics._testcase_before_called)\
 			.override_failure_message("Expect before_test called %s times but is %s for test case %s" % [statistics._expected_testcase_before, statistics._testcase_before_called, test_case])\
 			.is_equal(statistics._expected_testcase_before)