using Xunit; namespace Parser.Tests { public class TestWindowShould { [Fact] public void ReturnEofGivenEmptyText() { var sut = new TextWindow(""); Assert.True(sut.IsEof()); } [Fact] public void ReturnNotEofGivenNonEmptyText() { var sut = new TextWindow("Text."); Assert.False(sut.IsEof()); } [Fact] public void ReturnCharsInCorrectOrder() { var text = "abc"; var sut = new TextWindow(text); Assert.Equal('a', sut.PeekChar()); sut.ConsumeChar(); Assert.Equal('b', sut.PeekChar()); sut.ConsumeChar(); Assert.Equal('c', sut.PeekChar()); sut.ConsumeChar(); Assert.True(sut.IsEof()); } } }