public void CurrentSourceLine_Windows(string source, int position, int expected)
{
var scanner = new TextSourceScanner(source, "\r\n");
scanner.Advance(position);
var actual = scanner.CurrentSourceLine;
Assert.Equal(expected, actual);
}
public void IsAtEnd(string source, int position, bool expected)
{
var scanner = new TextSourceScanner(source);
scanner.Advance(position);
var actual = scanner.IsAtEnd();
Assert.Equal(expected, actual);
}
public void CurrentWindow(string source, int @base, int position, string expected)
{
var scanner = new TextSourceScanner(source);
scanner.Advance(position);
scanner.Base = @base;
var actual = scanner.CurrentWindow;
Assert.Equal(expected, actual);
}
public void CurrentWindow_WithBaseAdjust(string source, int position, int advanceCount, string expected)
{
var scanner = new TextSourceScanner(source);
scanner.Advance(position);
scanner.Base = scanner.Position;
scanner.Advance(advanceCount);
var actual = scanner.CurrentWindow;
Assert.Equal(expected, actual);
}
public void PeekNext_Happy(string source, int position, int peekCount, char expected)
{
var scanner = new TextSourceScanner(source);
if (position > 0)
{
scanner.Advance(position);
}
var startPosition = scanner.Position;
var actual = scanner.Peek(peekCount);
Assert.Equal(expected, actual);
Assert.Equal(startPosition, scanner.Position);
}
public void Advance_Happy(string source, int position, int advanceCount, char expected)
{
var scanner = new TextSourceScanner(source);
if (position > 0)
{
scanner.Advance(position);
}
var startPosition = scanner.Position;
var actual = scanner.Advance(advanceCount);
Assert.Equal(expected, actual);
if (source.Length > startPosition + advanceCount)
{
Assert.Equal(startPosition + advanceCount, scanner.Position);
}
}
public void Advance_NegativeCount(string source, int advanceCount)
{
var scanner = new TextSourceScanner(source);
Assert.Throws <InvalidOperationException>(() => scanner.Advance(advanceCount));
}