public void Test_UserIdentifiersSpecification_SatisfyEntityFrom()
        {
            var specification = new UserIdentifiersSpecification(new List<int> { 1 });
            var result = specification.SatisfyEntityFrom(this.Values);

            Assert.AreEqual(1, result.Id);
        }
        public void Test_UserIdentifiersSpecification_SatisfyEntitiesFrom()
        {
            var specification = new UserIdentifiersSpecification(new List<int> { 1, 2 });
            var results = specification.SatisfyEntitiesFrom(this.Values);

            Assert.AreEqual(2, results.Count());
        }