public void TestOverallEquivalence([Values(false, true)] bool includeNull)
{
//--Arrange
var collection = BuildSourceCollection(includeNull);
var expected = collection.ToLookup(x => x.key, x => x.element);
//--Act/Assert
var actual = new MutableLookup <long?, Guid>();
foreach (var grouping in expected)
{
CollectionAssert.IsEmpty(actual[grouping.Key]);
actual[grouping.Key] = grouping;
}
//--Assert
Assert.IsFalse(actual.Contains(-1));
CollectionAssert.AreEquivalent(expected.Select(x => x.Key), actual.Select(x => x.Key));
foreach (var expectedGrouping in expected)
{
Assert.IsTrue(actual.Contains(expectedGrouping.Key));
CollectionAssert.AreEquivalent(expectedGrouping, actual[expectedGrouping.Key]);
}
foreach (var(expectedGrouping, actualGrouping) in expected.Zip(actual, (e, a) => (e, a)))
{
Assert.AreEqual(expectedGrouping.Key, actualGrouping.Key);
CollectionAssert.AreEquivalent(expectedGrouping, actualGrouping);
}
}