public void BothAreNull_None_ReturenEmpty()
{
string str1 = null;
string str2 = null;
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.IsTrue(!diff.Any());
}
public void DstIsNull_None_ReturenEmpty()
{
string str1 = null;
var str2 = string.Empty;
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.IsTrue(!diff.Any());
}
public void BothAreEmpty_ReturenEmpty()
{
string str1 = string.Empty;
string str2 = string.Empty;
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.IsTrue(!diff.Any());
}
public void CompletelyDifferent_None_ResultIsCorrect()
{
var str1 = "aaa";
var str2 = "bbb";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(2).Status);
}
private void EqualSeq_None_ResultIsCorrect(DiffOrderType orderType)
{
var str1 = "abcd";
var str2 = "abcd";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(str1.Count(), diff.Count());
Assert.IsTrue(diff.All(r => r.Status == DiffStatus.Equal));
Assert.IsTrue(diff.Select(r => r.Obj1).SequenceEqual(str1.Select(c => c)));
Assert.IsTrue(diff.Select(r => r.Obj2).SequenceEqual(str1.Select(c => c)));
}
public void Popped_None_ResultIsCorrect()
{
var str1 = "abc_";
var str2 = "abc";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(3).Status);
}
public void RondomString_None_EqualToRestoredString()
{
var str1 = "q4DU8sbeD4JdhFA4hWShCv3bbtD7djX5SaNnQUHJHdCEJs6X2LJipbEEr7bZZbzcUrpuKpRDKNz92x5P";
var str2 = "3GKLWNDdCxip8kda2r2MUT45RrHUiESQhmhUZtMcpBGcSwJVS9uq4DWBAQk2zPUJCJabaeWuP5mxyPBz";
var diff = DiffUtil.OptimizedDiff(str1, str2);
var src = new string(diff.CreateSrc().ToArray());
var dst = new string(diff.CreateDst().ToArray());
Assert.AreEqual(src, str1);
Assert.AreEqual(dst, str2);
}
public void ModifiedSeries_None_ResultIsCorrect()
{
string str1 = "abbbc";
string str2 = "a___c";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(4).Status);
}
public void DeletedNextToModified_None_ResultIsCorrect()
{
string str1 = "abcdef";
string str2 = "ab_ef";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(4).Status);
}
public void DstIsEmpty_None_NoException()
{
string str1 = "abced";
string str2 = "";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(4).Status);
}
public void AppendAndShifted_None_ResultIsCorrect()
{
var str1 = "_aaa";
var str2 = "aaa_";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Deleted, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Inserted, diff.ElementAt(4).Status);
}
public void ModifiedBetweenInsertedAndInserted_None_ResultIsCorrect()
{
string str1 = "abcde";
string str2 = "ab_g_de";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Inserted, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Inserted, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(4).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(5).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(6).Status);
}
public void ModifiedAlternately_None_ResultIsCorrect()
{
var str1 = "abcdefg";
var str2 = "a_c_e_g";
var diff = DiffUtil.OptimizedDiff(str1, str2);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(2).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(3).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(4).Status);
Assert.AreEqual(DiffStatus.Modified, diff.ElementAt(5).Status);
Assert.AreEqual(DiffStatus.Equal, diff.ElementAt(6).Status);
}
public void DstContainsUppercase_IgnoreCaseCompare_ResultIsCorrect()
{
var str1 = "abc";
var str2 = "dBf";
var option = new DiffOption <char>
{
EqualityComparer = new IgnoreCaseCompare()
};
var opt = DiffUtil.OptimizedDiff(str1, str2, option);
Assert.AreEqual(DiffStatus.Modified, opt.ElementAt(0).Status);
Assert.AreEqual(DiffStatus.Equal, opt.ElementAt(1).Status);
Assert.AreEqual(DiffStatus.Modified, opt.ElementAt(2).Status);
}
private static Dictionary <int, ExcelColumnStatus> CreateColumnStatusMap(
IEnumerable <ExcelColumn> srcColumns, IEnumerable <ExcelColumn> dstColumns, ExcelSheetDiffConfig config)
{
var option = new DiffOption <ExcelColumn>();
if (config.SrcHeaderIndex >= 0)
{
option.EqualityComparer = new HeaderComparer();
foreach (var sc in srcColumns)
{
sc.HeaderIndex = config.SrcHeaderIndex;
}
}
if (config.DstHeaderIndex >= 0)
{
foreach (var dc in dstColumns)
{
dc.HeaderIndex = config.DstHeaderIndex;
}
}
var results = DiffUtil.OptimizedDiff(srcColumns, dstColumns, option);
var ret = new Dictionary <int, ExcelColumnStatus>();
var columnIndex = 0;
foreach (var result in results)
{
var status = ExcelColumnStatus.None;
if (result.Status == DiffStatus.Deleted)
{
status = ExcelColumnStatus.Deleted;
}
else if (result.Status == DiffStatus.Inserted)
{
status = ExcelColumnStatus.Inserted;
}
ret.Add(columnIndex, status);
columnIndex++;
}
return(ret);
}
public void None_None_LimitOptionWorks()
{
var str1 = Enumerable.Repeat("Good dog", 1000).SelectMany(c => c);
var str2 = Enumerable.Repeat("Bad dog", 1000).SelectMany(c => c);
var option = new DiffOption <char>
{
Limit = 1000
};
var sw = new System.Diagnostics.Stopwatch();
sw.Start();
DiffUtil.OptimizedDiff(str1, str2);
sw.Stop();
var time1 = sw.Elapsed;
sw.Restart();
DiffUtil.OptimizedDiff(str1, str2, option);
sw.Stop();
var time2 = sw.Elapsed;
Assert.IsTrue(time2 < time1);
}
public static ExcelSheetDiff Diff(ExcelSheet src, ExcelSheet dst, ExcelSheetDiffConfig config)
{
var srcColumns = src.CreateColumns();
var dstColumns = dst.CreateColumns();
var columnStatusMap = CreateColumnStatusMap(srcColumns, dstColumns, config);
var option = new DiffOption <ExcelRow>();
option.EqualityComparer =
new RowComparer(new HashSet <int>(columnStatusMap.Where(i => i.Value != ExcelColumnStatus.None).Select(i => i.Key)));
foreach (var row in src.Rows.Values)
{
var shifted = new List <ExcelCell>();
var index = 0;
var queue = new Queue <ExcelCell>(row.Cells);
while (queue.Any())
{
if (columnStatusMap[index] == ExcelColumnStatus.Inserted)
{
shifted.Add(new ExcelCell(string.Empty, 0, 0));
}
else
{
shifted.Add(queue.Dequeue());
}
index++;
}
row.UpdateCells(shifted);
}
foreach (var row in dst.Rows.Values)
{
var shifted = new List <ExcelCell>();
var index = 0;
var queue = new Queue <ExcelCell>(row.Cells);
while (queue.Any())
{
if (columnStatusMap[index] == ExcelColumnStatus.Deleted)
{
shifted.Add(new ExcelCell(string.Empty, 0, 0));
}
else
{
shifted.Add(queue.Dequeue());
}
index++;
}
row.UpdateCells(shifted);
}
var resultArray = DiffUtil.OptimizedDiff(src.Rows.Values, dst.Rows.Values, option).ToArray();
if (resultArray.Length > 10000)
{
var count = 0;
var indices = Enumerable.Range(0, 100).ToList();
foreach (var result in resultArray)
{
if (result.Status != DiffStatus.Equal)
{
indices.AddRange(Enumerable.Range(Math.Max(0, count - 100), 200));
}
count++;
}
indices = indices.Distinct().ToList();
resultArray = indices.Where(i => i < resultArray.Length).Select(i => resultArray[i]).ToArray();
}
var sheetDiff = new ExcelSheetDiff(src, dst);
DiffCells(resultArray, sheetDiff, columnStatusMap);
return(sheetDiff);
}