public void OrderSensitiveValueComparisonListTests_DefaultObjectComparer()
{
var equalityComparer = new DefaultObjectComparer <ArtifactChange>();
var listOne = CreateTestList(equalityComparer);
// Populate the second list with references from the first.
var listTwo = new OrderSensitiveValueComparisonList <ArtifactChange>(equalityComparer);
for (int i = 0; i < listOne.Count; i++)
{
listTwo.Add(listOne[i]);
}
// Every list s/be equal to itself.
listOne.Equals(listOne).Should().Be(true);
// Two lists with shared objects, by reference, in the same
// order should be regarded as equivalent.
listOne.Equals(listTwo).Should().Be(true);
ArtifactChange toSwap = listTwo[0];
listTwo[0] = listTwo[1];
listTwo[1] = toSwap;
// We have reordered two objects that are themselves identical.
// The comparison should fail as the order of references changed.
listOne.Equals(listTwo).Should().Be(false);
}
private static OrderSensitiveValueComparisonList <Artifact> ConstructFilesChain(IList <Artifact> existingFiles, Artifact currentFile)
{
var fileChain = new OrderSensitiveValueComparisonList <Artifact>(Artifact.ValueComparer);
int parentIndex;
do
{
currentFile = currentFile.DeepClone();
parentIndex = currentFile.ParentIndex;
// Index information is entirely irrelevant for the identity of nested files,
// as each element of the chain could be stored at arbitrary locations in
// the run.files table. And so we elide this information.
currentFile.ParentIndex = -1;
if (currentFile.Location != null)
{
currentFile.Location.Index = -1;
}
fileChain.Add(currentFile);
if (parentIndex != -1)
{
currentFile = existingFiles[parentIndex];
}
} while (parentIndex != -1);
return(fileChain);
}
private static OrderSensitiveValueComparisonList <LogicalLocation> ConstructLogicalLocationsChain(
LogicalLocation currentLogicalLocation,
IList <LogicalLocation> existingLogicalLocations)
{
var logicalLocationChain = new OrderSensitiveValueComparisonList <LogicalLocation>(LogicalLocation.ValueComparer);
int parentIndex;
do
{
currentLogicalLocation = currentLogicalLocation.DeepClone();
parentIndex = currentLogicalLocation.ParentIndex;
// Index information is entirely irrelevant for the identity of nested logical locations,
// as each element of the chain could be stored at arbitrary locations in the
// run.logicalLocations table. And so we elide this information.
currentLogicalLocation.ParentIndex = -1;
currentLogicalLocation.Index = -1;
logicalLocationChain.Add(currentLogicalLocation);
if (parentIndex != -1)
{
currentLogicalLocation = existingLogicalLocations[parentIndex];
}
} while (parentIndex != -1);
return(logicalLocationChain);
}
