[Runtime tests] Added file tests for https://github.com/X-Sharp/XSharpPublic/issues/688
[Runtime tests] Added file tests for https://github.com/X-Sharp/XSharpPublic/issues/688

X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic