public void IsSatisfiedBy_WhenCreatedByMatchesValue_ReturnsTrue()
{
var createdBy = _fixture.Create <int>();
var mockEntity = new Mock <ICreatedAudit>();
mockEntity.Setup(a => a.CreatedBy).Returns(createdBy);
var specification = new CreatedBy <ICreatedAudit>(createdBy);
var satisified = specification.IsSatisfiedBy(mockEntity.Object);
Assert.IsTrue(satisified);
}