Typical. As soon as I post to SO, the answer presents itself. Rather than expecting a specific object when creating the substitute call, I expect any instance of type IEnumerable<string>
and create a callback when checking the Received()
call that actually verifies the values. The substitute call becomes this:
MenuDataProviderSub.GetMenuData(Arg.Any<IEnumerable<string>>()).Returns(Arg.Any<IList<BusinessFocusArea>>());
The Received()
check becomes this:
MenuDataProviderSub.Received().GetMenuData(Arg.Is<IEnumerable<string>>(a => VerifyPageIds(ExpectedUserPermissions.AuthorisedPageIds, a)));
private static bool VerifyPageIds(IEnumerable<string> expected, IEnumerable<string> actual)
{
var expectedIds = expected.ToList();
var actualIds = actual.ToList();
return expectedIds.Count == actualIds.Count && expectedIds.All(actualIds.Contains);
}