public void ChangeCharacter_ReturnOChange_String()
{
LeetSpeak testLeetSpeak = new LeetSpeak("you");
Assert.AreEqual("y0u", testLeetSpeak.ChangeCharacter());
}
public void ChangeCharacter_ReturnTChange_String()
{
LeetSpeak testLeetSpeak = new LeetSpeak("hello there");
Assert.AreEqual("h3ll0 7h3r3", testLeetSpeak.ChangeCharacter());
}
public void ChangeCharacter_ReturnIChange_String()
{
LeetSpeak testLeetSpeak = new LeetSpeak("if");
Assert.AreEqual("1f", testLeetSpeak.ChangeCharacter());
}