public void HoldTrueForSpaceSeparatewd()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("abcd efghijk lmno"));
 }
 public void HoldTrueForHyphenWord()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("thumbscrew-japingly"));
 }
 public void HoldTrueForDuplicateHyphen()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("six-year-old"));
 }
 public void HoldTrueForMixedCase()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("Alphabet"));
 }
 public void HoldTrueForLongWord()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("subdermatoglyphic"));
 }
 public void HoldFalseForEleven()
 {
     Assert.False(IsogramChecker.CheckIfIsogram("eleven"));
 }
 public void HoldTrueForWord()
 {
     Assert.True(IsogramChecker.CheckIfIsogram("isogram"));
 }
 public void HoldTrueForEmpty1String()
 {
     Assert.True(IsogramChecker.CheckIfIsogram(""));
 }