public void CanCheckHasNextLine()
{
string input =
@"First line
4453
Last line";
using (var s = new TextScanner(input))
{
// verified the following with a java sample.
Assert.That(s.HasNextLine(), Is.True);
Assert.That(s.NextLine(), Is.EqualTo("First line"));
Assert.That(s.ToString(), Contains.Substring("position=12"));
Assert.That(s.HasNextLine(), Is.True);
Assert.That(s.NextDouble(), Is.EqualTo(4453.0));
Assert.That(s.ToString(), Contains.Substring("position=16"));
Assert.That(s.HasNextLine(), Is.True);
Assert.That(s.NextLine(), Is.EqualTo(""));
Assert.That(s.ToString(), Contains.Substring("position=18"));
Assert.That(s.HasNextLine(), Is.True);
Assert.That(s.NextLine(), Is.EqualTo("Last line"));
Assert.That(s.HasNextLine(), Is.False);
Assert.Catch(() => s.NextLine());
}
}
public void CanSkipBlankLines()
{
string input =
@"word
words
";
using (var s = new TextScanner(input))
{
Assert.That(s.FindInLine(@"^\w+$"), Is.EqualTo("word"));
Assert.That(s.FindInLine(@"^\w+$"), Is.EqualTo("words"));
Assert.That(s.HasNextLine(), Is.False);
}
}
public void CanSkipLines()
{
string input =
@"First Line, second statement,
Second Line, fourth statement
";
using (var s = new TextScanner(input)
.UseDelimiter(@",\s*"))
{
Assert.That(s.Next(), Is.EqualTo("First Line"));
Assert.That(s.NextLine(), Is.EqualTo(", second statement,"));
Assert.That(s.Next(), Is.EqualTo("Second Line"));
Assert.That(s.FindInLine(@"^[a-z, ]+$"), Is.EqualTo(", fourth statement"));
Assert.That(s.HasNextLine(), Is.False);
// there are no more line endings, so the following should throw
Assert.Catch <InvalidOperationException>(() => s.NextLine());
}
}