public void NextCharacter_NonEmptyStringAllChars_ReturnsCharactersThenThrows()
{
RawExpression expression = new RawExpression("foo");
Assert.AreEqual('f', expression.Next());
Assert.AreEqual('o', expression.Next());
Assert.AreEqual('o', expression.Next());
Assert.Throws <IndexOutOfRangeException>(() => expression.Next());
}
public void NextCharacter_NonEmptyString_ReturnsCharacter()
{
RawExpression expression = new RawExpression("foo");
Assert.AreEqual('f', expression.Next());
}
public void NextCharacter_EmptyString_ThrowsException()
{
RawExpression expression = new RawExpression("");
Assert.Throws <IndexOutOfRangeException>(() => expression.Next());
}
