public void CanAdvanceAheadNCharacters()
{
using (var empty = new LinedTextTestFixture(""))
{
empty.Advance(0);
empty.ToString().ShouldBe("");
empty.Advance(1);
empty.ToString().ShouldBe("");
}
using (var abc = new LinedTextTestFixture("abc"))
{
abc.ReadLine().ShouldBeTrue();
abc.ToString().ShouldBe("(1, 1)abc");
abc.Advance(1);
abc.ToString().ShouldBe("(1, 2)bc");
abc.Advance(1);
abc.ToString().ShouldBe("(1, 3)c");
abc.Advance(1);
abc.ToString().ShouldBe("(1, 4)");
abc.Advance(1);
abc.ToString().ShouldBe("(1, 4)");
abc.Advance(100);
abc.ToString().ShouldBe("(1, 4)");
}
}
public void TextToStringShowsEllipsisForLongInputs()
{
const string complex =
@"{""numbers"" : [10, 20, 30], ""window"": { ""title"": ""Sample Widget"", ""parent"": null, ""maximized"": true, ""transparent"": false}}";
using (var text = new LinedTextTestFixture(complex))
{
text.ReadLine();
text.ToString().ShouldBe(@"(1, 1){""numbers"" : [10, 20, 30], ""window"": { ""title"": ""S...");
}
}
public void CanMatchLeadingCharactersByTokenRegex()
{
var end = new TokenRegex(@"$");
var letters = new TokenRegex(@"[a-z]+");
var digits = new TokenRegex(@"[0-9]+");
var alphanumerics = new TokenRegex(@"[a-z0-9]+");
using (var empty = new LinedTextTestFixture(""))
{
empty.ReadLine().ShouldBeFalse();
empty.Match(letters).ShouldFail();
empty.Match(end).ShouldFail(); // the behavior is different with respect to Text
}
using (var abc123 = new LinedTextTestFixture("abc123"))
{
abc123.ReadLine().ShouldBeTrue();
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldSucceed("abc");
abc123.Match(alphanumerics).ShouldSucceed("abc123");
abc123.Advance(2);
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldSucceed("c");
abc123.Match(alphanumerics).ShouldSucceed("c123");
abc123.Advance(1);
abc123.Match(digits).ShouldSucceed("123");
abc123.Match(letters).ShouldFail();
abc123.Match(alphanumerics).ShouldSucceed("123");
abc123.Advance(3);
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldFail();
abc123.Match(alphanumerics).ShouldFail();
}
}
public void CanMatchLeadingCharactersByPredicate()
{
Predicate <char> letters = char.IsLetter;
Predicate <char> digits = char.IsDigit;
Predicate <char> alphanumerics = char.IsLetterOrDigit;
using (var empty = new LinedTextTestFixture(""))
{
empty.ReadLine().ShouldBeFalse();
empty.Match(letters).ShouldFail();
}
using (var abc123 = new LinedTextTestFixture("abc123"))
{
abc123.ReadLine().ShouldBeTrue();
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldSucceed("abc");
abc123.Match(alphanumerics).ShouldSucceed("abc123");
abc123.Advance(2);
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldSucceed("c");
abc123.Match(alphanumerics).ShouldSucceed("c123");
abc123.Advance(1);
abc123.Match(digits).ShouldSucceed("123");
abc123.Match(letters).ShouldFail();
abc123.Match(alphanumerics).ShouldSucceed("123");
abc123.Advance(3);
abc123.Match(digits).ShouldFail();
abc123.Match(letters).ShouldFail();
abc123.Match(alphanumerics).ShouldFail();
}
}
public void CanPeekAheadNCharacters()
{
using (var empty = new LinedTextTestFixture(""))
{
empty.Peek(0).ShouldBe("");
empty.Peek(1).ShouldBe("");
empty.ReadLine().ShouldBeFalse();
empty.Peek(0).ShouldBe("");
empty.Peek(1).ShouldBe("");
}
using (var t = new StringReader("abc"))
{
var abc = new LinedInputText(t);
abc.ReadLine();
abc.Peek(0).ShouldBe("");
abc.Peek(1).ShouldBe("a");
abc.Peek(2).ShouldBe("ab");
abc.Peek(3).ShouldBe("abc");
abc.Peek(4).ShouldBe("abc");
abc.Peek(100).ShouldBe("abc");
}
}
public void DetectsTheEndOfInput()
{
using (var empty = new LinedTextTestFixture(""))
{
empty.EndOfInput.ShouldBeFalse();
empty.EndOfLine.ShouldBeTrue();
empty.ReadLine().ShouldBeFalse();
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
empty.ReadLine().ShouldBeFalse();
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
empty.ReadLine().ShouldBeFalse();
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
}
using (var x = new LinedTextTestFixture("x"))
{
x.EndOfInput.ShouldBeFalse();
x.EndOfLine.ShouldBeTrue();
x.ReadLine().ShouldBeTrue();
x.EndOfInput.ShouldBeFalse();
x.EndOfLine.ShouldBeFalse();
x.ReadLine().ShouldBeFalse();
x.EndOfInput.ShouldBeTrue();
x.EndOfLine.ShouldBeTrue();
}
using (var asdf = new LinedTextTestFixture("asdf"))
{
asdf.EndOfInput.ShouldBeFalse();
asdf.EndOfLine.ShouldBeTrue();
asdf.ReadLine().ShouldBeTrue();
asdf.EndOfInput.ShouldBeFalse();
asdf.EndOfLine.ShouldBeFalse();
asdf.Advance(1);
asdf.EndOfInput.ShouldBeFalse();
asdf.EndOfLine.ShouldBeFalse();
asdf.Advance(2);
asdf.EndOfInput.ShouldBeFalse();
asdf.EndOfLine.ShouldBeFalse();
asdf.Advance(1);
asdf.EndOfInput.ShouldBeFalse();
asdf.EndOfLine.ShouldBeTrue();
asdf.ReadLine().ShouldBeFalse();
asdf.EndOfInput.ShouldBeTrue();
asdf.EndOfLine.ShouldBeTrue();
}
}
public void CanGetCurrentPosition()
{
using (var empty = new LinedTextTestFixture(""))
{
empty.EndOfInput.ShouldBeFalse();
empty.EndOfLine.ShouldBeTrue();
empty.Position.ShouldBe(new Position(0, 1));
empty.ReadLine().ShouldBeFalse();
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
empty.Position.ShouldBe(new Position(0, 1));
empty.Advance(0);
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
empty.Position.ShouldBe(new Position(0, 1));
empty.Advance(1);
empty.EndOfInput.ShouldBeTrue();
empty.EndOfLine.ShouldBeTrue();
empty.Position.ShouldBe(new Position(0, 1));
}
var newLine = "\n";
var lines =
"Line 1" + newLine //Indexes 0-6
+ "Line 2" + newLine //Indexes 7-13
+ "Line 3" + newLine; //Indexes 14-20
using (var list = new LinedTextTestFixture(lines))
{
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.ReadLine().ShouldBeTrue();
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(1, 1));
list.Advance(0);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(1, 1));
list.Advance(5);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(1, 6));
list.Advance(2);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.Position.ShouldBe(new Position(1, 8));
list.Advance(1);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.Position.ShouldBe(new Position(1, 8));
list.ReadLine().ShouldBeTrue();
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(2, 1));
list.Advance(5);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(2, 6));
list.Advance(2);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.Position.ShouldBe(new Position(2, 8));
list.Advance(1);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.Position.ShouldBe(new Position(2, 8));
list.ReadLine().ShouldBeTrue();
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(3, 1));
list.Advance(5);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeFalse();
list.Position.ShouldBe(new Position(3, 6));
list.Advance(2);
list.Position.ShouldBe(new Position(3, 8));
list.EndOfLine.ShouldBeTrue();
list.Advance(100000);
list.EndOfInput.ShouldBeFalse();
list.EndOfLine.ShouldBeTrue();
list.Position.ShouldBe(new Position(3, 8));
list.ReadLine().ShouldBeFalse();
list.EndOfInput.ShouldBeTrue();
list.EndOfLine.ShouldBeTrue();
}
}