public void CorrectDiffer_GetDiffer()
{
_testContext.Differs.Add(new Differ()
{
LeftInput = "left", RightInput = "right"
});
_testContext.SaveChanges();
var result = _sut.GetDiffer(1);
Assert.That(result, Has.Property("Id").EqualTo(1)
& Has.Property("LeftInput").EqualTo("left")
& Has.Property("RightInput").EqualTo("right"));
}