public void StringStringCleanUpFuntionality_RemoveSubstring_TEST()
{
StringCleanUpFuntionality SCF_TEST = new StringCleanUpFuntionality();
string testString = "This is not a test";
string RemoveString = "not";
string Expected = "This is a test";
string result = SCF_TEST.RemoveSubstring(testString, RemoveString);
Assert.AreEqual(Expected, result);
}