public void SourceText_NextFilter(string text, int start, string expectedOutput, int newCursor)
{
var source = new SourceText(text.AsMemory(), start);
var result = source.NextFilter(char.IsDigit);
Assert.AreEqual(expectedOutput, result.ToString());
Assert.AreEqual(newCursor, source.Cursor);
}
public void SourceText_NextFilter_FromEndOfLength()
{
var source = new SourceText("123".AsMemory());
var result = source.Next(source.Length);
Assert.AreEqual("123", result.ToString());
Assert.AreEqual(3, source.Cursor);
result = source.NextFilter(char.IsDigit);
Assert.AreEqual(string.Empty, result.ToString());
Assert.AreEqual(3, source.Cursor);
}