nicTest.diff_match_patchTest.diff_charsToLinesTest C# (CSharp) Method

    public void diff_charsToLinesTest() {
      diff_match_patchTest dmp = new diff_match_patchTest();
      // Convert chars up to lines.
      List<Diff> diffs = new List<Diff> {
          new Diff(Operation.EQUAL, "\u0001\u0002\u0001"),
          new Diff(Operation.INSERT, "\u0002\u0001\u0002")};
      List<string> tmpVector = new List<string>();
      tmpVector.Add("");
      tmpVector.Add("alpha\n");
      tmpVector.Add("beta\n");
      dmp.diff_charsToLines(diffs, tmpVector);
      CollectionAssert.AreEqual(new List<Diff> {
          new Diff(Operation.EQUAL, "alpha\nbeta\nalpha\n"),
          new Diff(Operation.INSERT, "beta\nalpha\nbeta\n")}, diffs);

      // More than 256 to reveal any 8-bit limitations.
      int n = 300;
      tmpVector.Clear();
      StringBuilder lineList = new StringBuilder();
      StringBuilder charList = new StringBuilder();
      for (int x = 1; x < n + 1; x++) {
        tmpVector.Add(x + "\n");
        lineList.Append(x + "\n");
        charList.Append(Convert.ToChar (x));
      }
      Assert.AreEqual(n, tmpVector.Count);
      string lines = lineList.ToString();
      string chars = charList.ToString();
      Assert.AreEqual(n, chars.Length);
      tmpVector.Insert(0, "");
      diffs = new List<Diff> {new Diff(Operation.DELETE, chars)};
      dmp.diff_charsToLines(diffs, tmpVector);
      CollectionAssert.AreEqual(new List<Diff>
          {new Diff(Operation.DELETE, lines)}, diffs);
    }