/// <summary>
/// Finds all the common elements in all the loaded collections and returns a list. Might want to override if the
/// diff produces diff elements of a different type
/// </summary>
/// <returns>The collection of common elements</returns>
public virtual IDiffObjectsCollection FindCommonElements()
{
int n = _collections.Count;
IDiffObjectsCollection commonElements = _collections[0];
for (int i = 1; i < n; i++)
{
//disable merges for this diff
bool allowMerges = _properties.AllowMerges;
_properties.AllowMerges = false;
DoDiff(commonElements, _collections[i]);
_properties.AllowMerges = allowMerges;
//replace the current collection with the common elements collection
//at the next iteration the next element in the collection will be compared against the common elements
commonElements = _collections[i].CommonElements;
if (commonElements.Count == 0)
{
return(commonElements); //return an empty collection, there are no common elements
}
//sort the elements by position
commonElements.SortByPosition();
}
return(commonElements); //the last element will hold all the common elements
}
public void LinesDiff()
{
string text1 = "LineLine1.1\r\n" +
"eniLLine1.3\r\n" +
"ABC1.4";
string text2 = "LineLine2.1\r\n" +
"XYZ2.4\r\n" +
"eniLLine2.3";
LinesDiffer differ = new LinesDiffer();
DiffResult result = differ.DoDiff(text1, text2);
IDiffObjectsCollection firstDiffs = result.DifferencesForFirst;
IDiffObjectsCollection secondDiffs = result.DifferencesForSecond;
firstDiffs.SortByPosition();
secondDiffs.SortByPosition();
Assert.IsTrue(firstDiffs[0].ValueEquals(new LetterDiffObject(0, 0, "1")));
Assert.IsTrue(secondDiffs[0].ValueEquals(new LetterDiffObject(0, 0, "2")));
Assert.IsTrue(firstDiffs[1].ValueEquals(new LetterDiffObject(0, 0, "1")));
Assert.IsTrue(secondDiffs[1].ValueEquals(new LineDiffObject(0, 0, "XYZ2.4")));
Assert.IsTrue(firstDiffs[2].ValueEquals(new LineDiffObject(0, 0, "ABC1.4")));
Assert.IsTrue(secondDiffs[2].ValueEquals(new LetterDiffObject(0, 0, "2")));
}