public void Will_return_correct_modifications_for_strings_with_one_difference()
{
var differ = new TestableDiffer();
var a = new ModificationData("matt\ncat\nhat\n");
var b = new ModificationData("matt\ncat\ntat\nhat\n");
a.HashedPieces = new[] { 1, 2, 3 };
b.HashedPieces = new[] { 1, 2, 4, 3 };
a.Modifications = new bool[a.HashedPieces.Length];
b.Modifications = new bool[b.HashedPieces.Length];
differ.TestBuildModificationData(a, b);
Assert.False(a.Modifications[0]);
Assert.False(a.Modifications[1]);
Assert.False(a.Modifications[2]);
Assert.False(b.Modifications[0]);
Assert.False(b.Modifications[1]);
Assert.True(b.Modifications[2]);
Assert.False(b.Modifications[3]);
}
public void Will_return_all_modifications_for_unique_strings()
{
var differ = new TestableDiffer();
var a = new ModificationData("cat\nhat\npat\nmatt");
var b = new ModificationData("door\nfloor\nbore\nmore");
a.HashedPieces = new[] { 1, 2, 3, 4 };
b.HashedPieces = new[] { 5, 6, 7, 8 };
a.Modifications = new bool[a.HashedPieces.Length];
b.Modifications = new bool[b.HashedPieces.Length];
differ.TestBuildModificationData(a, b);
foreach (var mod in a.Modifications)
{
Assert.True(mod);
}
foreach (var mod in b.Modifications)
{
Assert.True(mod);
}
}
public void Will_return_correct_modifications_two_partially_similar_strings()
{
var differ = new TestableDiffer();
var a = new ModificationData("cat\nhat\npat\nmatt");
var b = new ModificationData("cat\nmatt\ntac");
a.HashedPieces = new[] { 1, 2, 3, 4 };
b.HashedPieces = new[] { 1, 4, 5 };
a.Modifications = new bool[a.HashedPieces.Length];
b.Modifications = new bool[b.HashedPieces.Length];
differ.TestBuildModificationData(a, b);
Assert.False(a.Modifications[0]);
Assert.True(a.Modifications[1]);
Assert.True(a.Modifications[2]);
Assert.False(a.Modifications[3]);
Assert.False(b.Modifications[0]);
Assert.False(b.Modifications[1]);
Assert.True(b.Modifications[2]);
}
public void Will_return_no_modifications_for_same_strings()
{
var differ = new TestableDiffer();
var a = new ModificationData("cat\nhat\npat\nmatt");
var b = new ModificationData("cat\nhat\npat\nmatt");
a.HashedPieces = new[] { 1, 2, 3, 4 };
b.HashedPieces = new[] { 1, 2, 3, 4 };
a.Modifications = new bool[a.HashedPieces.Length];
b.Modifications = new bool[b.HashedPieces.Length];
differ.TestBuildModificationData(a, b);
foreach (var mod in a.Modifications)
{
Assert.False(mod);
}
foreach (var mod in b.Modifications)
{
Assert.False(mod);
}
}