public void ReadingAtWithExplicitBuffer()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
var outBuffer = new char[4];
buffer.ReadAt(0, outBuffer, 0, 2);
outBuffer[0].Should().Be('a');
outBuffer[1].Should().Be('b');
buffer.ReadAt(2, outBuffer, 0, 2);
outBuffer[0].Should().Be('c');
outBuffer[1].Should().Be('d');
outBuffer[0] = 'x';
buffer.ReadAt(0, outBuffer, 1, 1);
outBuffer[0].Should().Be('x');
outBuffer[1].Should().Be('a');
buffer.Invoking(b => b.ReadAt(0, null, 0, 2)).Should().Throw <ArgumentNullException>();
buffer.Invoking(b => b.ReadAt(2, outBuffer, 0, 4)).Should().Throw <ArgumentException>();
buffer.Invoking(b => b.ReadAt(2, outBuffer, 3, 2)).Should().Throw <ArgumentException>();
}
public void ReadingAt()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.ReadAt(0, 2).Should().Equal('a', 'b');
buffer.ReadAt(2, 2).Should().Equal('c', 'd');
buffer.Invoking(b => b.ReadAt(2, 4)).Should().Throw <ArgumentException>();
buffer.Invoking(b => b.ReadAt(3, 2)).Should().Throw <ArgumentException>();
}
public void ReplaceWithTooLongString()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.Invoking(b => b.Replace("xyzzy")).Should().Throw <ArgumentOutOfRangeException>();
}
public void ReplaceWithNullString()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.Invoking(b => b.Replace(null)).Should().Throw <ArgumentNullException>();
}
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 MovingCursorBogusly()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.Invoking(b => b.MoveCursor((SeekOrigin)0x10, 1))
.Should().Throw <ArgumentOutOfRangeException>();
}
public void Reading()
{
var buffer = new ConsoleInputBuffer();
buffer.Insert("abcd");
buffer.Read(0).Should().BeEmpty();
buffer.Read(1).Should().Equal('a');
buffer.Read(2).Should().Equal('a', 'b');
buffer.Read(3).Should().Equal('a', 'b', 'c');
buffer.Read(4).Should().Equal('a', 'b', 'c', 'd');
buffer.Invoking(b => b.Read(5)).Should().Throw <ArgumentException>();
}
