public void MovingCursorRelativeToEnd()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.End, 1, out int delta).Should().BeFalse();
buffer.CursorIndex.Should().Be(0);
delta.Should().Be(0);
buffer.MoveCursor(SeekOrigin.End, 0, out delta).Should().BeTrue();
buffer.CursorIndex.Should().Be(4);
delta.Should().Be(4);
buffer.MoveCursor(SeekOrigin.End, -2, out delta).Should().BeTrue();
buffer.CursorIndex.Should().Be(2);
delta.Should().Be(-2);
buffer.MoveCursor(SeekOrigin.End, 4, out delta).Should().BeFalse();
buffer.CursorIndex.Should().Be(2);
delta.Should().Be(0);
buffer.MoveCursor(SeekOrigin.End, -10, out delta).Should().BeFalse();
buffer.CursorIndex.Should().Be(2);
delta.Should().Be(0);
}
public void ReplacingAtEnd()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.End, 0);
buffer.Invoking(b => b.Replace('x')).Should().Throw <Exception>();
}
public void ReplaceOneChar()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Current, 1).Should().BeTrue();
buffer.Replace('x');
buffer.Contents.Should().Be("axcd");
}
public void RemovingAtEnd()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.End, 0);
buffer.Remove().Should().BeFalse();
buffer.Contents.Should().Be("abcd");
}
public void ReplacePartOfString()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Begin, 1);
buffer.Replace("xy");
buffer.Contents.Should().Be("axyd");
}
public void MovingCursorBogusly()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
Action movement = () => buffer.MoveCursor((SeekOrigin)0x10, 1);
movement.ShouldThrow <ArgumentOutOfRangeException>();
}
public void ReplacingAtEnd()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.End, 0);
Action replacementAction = () => buffer.Replace('x');
replacementAction.ShouldThrow <Exception>();
}
public void RemoveCharBeforeInMiddle()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.End, -1);
buffer.RemoveCharBeforeCursor().Should().BeTrue();
buffer.Contents.Should().Be("abd");
buffer.Length.Should().Be(3);
buffer.CursorIndex.Should().Be(2);
}
public void InsertStringInMiddle()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Begin, 2);
buffer.Insert("xyz");
buffer.Contents.Should().Be("abxyzcd");
buffer.CursorIndex.Should().Be(2);
buffer.Length.Should().Be(7);
buffer.CursorIsAtEnd.Should().BeFalse();
buffer.ToString().Should().Be("abxyzcd");
}
public void RemoveMultipleChars()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Begin, 1);
buffer.Remove(2).Should().BeTrue();
buffer.Contents.Should().Be("ad");
buffer.CursorIndex.Should().Be(1);
buffer.Length.Should().Be(2);
buffer.CursorIsAtEnd.Should().BeFalse();
buffer.ToString().Should().Be("ad");
}
public void RemoveLastChar()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Begin, 3);
buffer.Remove().Should().BeTrue();
buffer.Contents.Should().Be("abc");
buffer.CursorIndex.Should().Be(3);
buffer.Length.Should().Be(3);
buffer.CursorIsAtEnd.Should().BeTrue();
buffer.ToString().Should().Be("abc");
}
public void Truncate()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.MoveCursor(SeekOrigin.Begin, 2);
buffer.Truncate();
buffer.Contents.Should().Be("ab");
buffer.CursorIndex.Should().Be(2);
buffer.Length.Should().Be(2);
buffer.CursorIsAtEnd.Should().BeTrue();
buffer.ToString().Should().Be("ab");
}
