private static DeepTestResult CollectionsAreIntersectionEquivalent <T>(
IEnumerable <T> collection,
IEnumerable <T> expected,
object[] customEqualityMatchers)
{
return(CollectionCompare(
collection,
expected,
(master, compare) =>
{
while (master.Any())
{
var currentMaster = master.First();
var compareMatch =
compare.FirstOrDefault(
c => AreIntersectionEqual(
currentMaster,
c,
customEqualityMatchers).AreEqual);
// TODO: add information about mismatch
if (compareMatch == null)
{
return DeepTestResult.Fail(
$"Found no match for item\n{currentMaster.Stringify()}"
);
}
master.Remove(currentMaster);
compare.Remove(compareMatch);
}
return DeepTestResult.Pass;
}));
}
private static DeepTestResult CollectionsAreDeepEqual <T>(
IEnumerable <T> collection,
IEnumerable <T> expected,
object[] customEqualityComparers
)
{
if (collection == null && expected == null)
{
return(DeepTestResult.Pass);
}
if (collection == null || expected == null)
{
return(DeepTestResult.Fail(
expected == null
? $"Expected collection is null but actual is not"
: $"Actual collection is null but expected is not"
));
}
var expectedCount = expected.Count();
var collectionCount = collection.Count();
if (expectedCount != collectionCount)
{
return(DeepTestResult.Fail(
$"Expected collection with {expectedCount} items, but got {collectionCount}"
));
}
return(CollectionCompare(
collection,
expected,
(master, compare)
=> master.Zip(compare, Tuple.Create)
.Aggregate(
null as DeepTestResult,
(acc, cur) =>
{
if (acc != null)
{
return acc;
}
var result =
AreDeepEqual(
cur.Item1, cur.Item2, customEqualityComparers);
return result.AreEqual ? null : result;
}
)
) ?? DeepTestResult.Pass);
}
