public void testSpacesToTabs() { string str = "\t 123456\t "; StringTheory theory = new StringTheory(" 123456 "); theory.SpacesToTabs(5); Assert.True(str.Equals(theory.ToString()), "'tabsToSpaces' result doesn't match the comparison string!:" + theory); str = "123456"; theory = new StringTheory("123456"); theory.SpacesToTabs(-1); Assert.True(str.Equals(theory.ToString()), "tabsToSpaces failed using a bogus quantity"); }