public void IncrementalParsingIsSameAsFullParsing_MultipleConcurrentEdits()
{
int[] FindAllIndexes(string str, string needle)
{
var result = new List <int>();
var foundIndex = 0;
var startSearchAt = 0;
while ((foundIndex = str.IndexOf(needle, startSearchAt)) != -1)
{
result.Add(foundIndex);
startSearchAt = foundIndex + needle.Length;
}
return(result.ToArray());
}
const string AttributeName = "sameLengthAttributeName";
var attrIndexes = FindAllIndexes(Xml2, AttributeName);
XmlDocumentSyntax previousDocument = null;
for (int i = 1; i <= AttributeName.Length; i++)
{
var currentText = Xml2;
var changes = new List <TextChangeRange>();
// Reconstruct the intermediary attributes
for (int j = attrIndexes.Length - 1; j >= 0; j--)
{
currentText = currentText.Remove(attrIndexes[j], AttributeName.Length);
currentText = currentText.Insert(attrIndexes[j], AttributeName.Substring(0, i));
changes.Add(new TextChangeRange(new TextSpan(attrIndexes[j] + i - 1 - j * (AttributeName.Length - i), 0), 1));
}
changes.Reverse();
// All changes should map to the same letter
Assert.All(changes, c => Assert.Equal(currentText[c.Span.Start], currentText[changes[0].Span.Start]));
var full = Parser.ParseText(currentText);
var incremental = Parser.ParseIncremental(
currentText,
changes.ToArray(),
previousDocument
);
AssertSameNodes(full, incremental);
previousDocument = incremental;
}
}