public void CollapsesPreviousWhiteSpace()
{
var factory = new Factory();
// "Hello {{~test}}"
var document = factory.Document(
factory.Text("Hello"),
factory.WhiteSpace(1),
factory.Expression(
factory.MetaCode("{{", T.OpenTag),
factory.MetaCode("~", T.Tilde),
factory.Span(SpanKind.Expression, factory.Symbol("this", T.Identifier)),
factory.MetaCode("}}", T.CloseTag)));
factory = new Factory();
// "Hello{{~test}}"
var expected = factory.Document(
factory.Text("Hello"),
factory.WhiteSpace(1, collapsed: true),
factory.Expression(
factory.MetaCode("{{", T.OpenTag),
factory.MetaCode("~", T.Tilde),
factory.Span(SpanKind.Expression, factory.Symbol("this", T.Identifier)),
factory.MetaCode("}}", T.CloseTag)));
var visitor = new WhiteSpaceCollapsingParserVisitor();
visitor.VisitBlock(document);
var builder = new StringBuilder();
var comparer = new EquivalanceComparer(builder, 0);
Assert.True(comparer.Equals(expected, document), builder.ToString());
}