public virtual void TestComparatorReduceCommonStartEnd()
{
RawTextComparator c = RawTextComparator.DEFAULT;
Edit e;
e = c.ReduceCommonStartEnd(T(string.Empty), T(string.Empty), new Edit(0, 0, 0, 0)
);
NUnit.Framework.Assert.AreEqual(new Edit(0, 0, 0, 0), e);
e = c.ReduceCommonStartEnd(T("a"), T("b"), new Edit(0, 1, 0, 1));
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 1), e);
e = c.ReduceCommonStartEnd(T("a"), T("a"), new Edit(0, 1, 0, 1));
NUnit.Framework.Assert.AreEqual(new Edit(1, 1, 1, 1), e);
e = c.ReduceCommonStartEnd(T("axB"), T("axC"), new Edit(0, 3, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
e = c.ReduceCommonStartEnd(T("Bxy"), T("Cxy"), new Edit(0, 3, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 1), e);
e = c.ReduceCommonStartEnd(T("bc"), T("Abc"), new Edit(0, 2, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(0, 0, 0, 1), e);
e = new Edit(0, 5, 0, 5);
e = c.ReduceCommonStartEnd(T("abQxy"), T("abRxy"), e);
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
RawText a = new RawText(Sharpen.Runtime.GetBytesForString("p\na b\nQ\nc d\n", "UTF-8"
));
RawText b = new RawText(Sharpen.Runtime.GetBytesForString("p\na b \nR\n c d \n"
, "UTF-8"));
e = new Edit(0, 4, 0, 4);
e = RawTextComparator.WS_IGNORE_ALL.ReduceCommonStartEnd(a, b, e);
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
}
public virtual void TestEquals()
{
RawText a = new RawText(Constants.EncodeASCII("foo-a\nfoo-b\n"));
RawText b = new RawText(Constants.EncodeASCII("foo-b\nfoo-c\n"));
RawTextComparator cmp = RawTextComparator.DEFAULT;
NUnit.Framework.Assert.AreEqual(2, a.Size());
NUnit.Framework.Assert.AreEqual(2, b.Size());
// foo-a != foo-b
NUnit.Framework.Assert.IsFalse(cmp.Equals(a, 0, b, 0));
NUnit.Framework.Assert.IsFalse(cmp.Equals(b, 0, a, 0));
// foo-b == foo-b
NUnit.Framework.Assert.IsTrue(cmp.Equals(a, 1, b, 0));
NUnit.Framework.Assert.IsTrue(cmp.Equals(b, 0, a, 1));
}
public virtual void TestFallbackToMyersDiff()
{
HistogramDiff hd = new HistogramDiff();
hd.SetMaxChainLength(4);
RawTextComparator cmp = RawTextComparator.DEFAULT;
RawText ac = T("bbbbb");
RawText bc = T("AbCbDbEFbZ");
EditList r;
// Without fallback our results are limited due to collisions.
hd.SetFallbackAlgorithm(null);
r = hd.Diff(cmp, ac, bc);
NUnit.Framework.Assert.AreEqual(1, r.Count);
// Results go up when we add a fallback for the high collision regions.
hd.SetFallbackAlgorithm(MyersDiff <Sequence> .INSTANCE);
r = hd.Diff(cmp, ac, bc);
NUnit.Framework.Assert.AreEqual(5, r.Count);
}
/// <summary>Set the line equivalence function for text file differences.</summary>
/// <remarks>Set the line equivalence function for text file differences.</remarks>
/// <param name="cmp">
/// The equivalence function used to determine if two lines of
/// text are identical. The function can be changed to ignore
/// various types of whitespace.
/// </param>
/// <seealso cref="RawTextComparator.DEFAULT">RawTextComparator.DEFAULT</seealso>
/// <seealso cref="RawTextComparator.WS_IGNORE_ALL">RawTextComparator.WS_IGNORE_ALL</seealso>
/// <seealso cref="RawTextComparator.WS_IGNORE_CHANGE">RawTextComparator.WS_IGNORE_CHANGE
/// </seealso>
/// <seealso cref="RawTextComparator.WS_IGNORE_LEADING">RawTextComparator.WS_IGNORE_LEADING
/// </seealso>
/// <seealso cref="RawTextComparator.WS_IGNORE_TRAILING">RawTextComparator.WS_IGNORE_TRAILING
/// </seealso>
public virtual void SetDiffComparator(RawTextComparator cmp)
{
comparator = cmp;
}