public void StartsWith()
 {
     Assert.True(StringBackports.StartsWith("xasd", 'x'));
     Assert.False(StringBackports.StartsWith("xasd", 'a'));
     Assert.False(StringBackports.StartsWith("", 'a'));
     Assert.False(StringBackports.StartsWith(null, 'a'));
 }
 public void EndsWith()
 {
     Assert.True(StringBackports.EndsWith("xasd", 'd'));
     Assert.False(StringBackports.EndsWith("xasd", 'a'));
     Assert.False(StringBackports.EndsWith("", 'd'));
     Assert.False(StringBackports.EndsWith(null, 'd'));
 }