public void CharacterReplacer_IsAnE_Three()
        {
            LeetSpeakTranslator newTest = new LeetSpeakTranslator();

            Assert.AreEqual("3", newTest.CharacterReplacer("e"));
        }
        public void CharacterReplacer_IsLowerCaseS_Z()
        {
            LeetSpeakTranslator newTest = new LeetSpeakTranslator();

            Assert.AreEqual("z", newTest.CharacterReplacer("s"));
        }
        public void CharacterReplacer_IsCapitalI_One()
        {
            LeetSpeakTranslator newTest = new LeetSpeakTranslator();

            Assert.AreEqual("1", newTest.CharacterReplacer("I"));
        }
        public void CharacterReplacer_IsLetterT_Seven()
        {
            LeetSpeakTranslator newTest = new LeetSpeakTranslator();

            Assert.AreEqual("7", newTest.CharacterReplacer("t"));
        }
        public void  CharacterReplacer_IsAnO_Zero()
        {
            LeetSpeakTranslator newTest = new LeetSpeakTranslator();

            Assert.AreEqual("0", newTest.CharacterReplacer("o"));
        }