public async Task GetTestsAsync_ReturnsTheListOfAllTests()
        {
            // Arrange
            mock.Setup(m => m.GetTestsAsync())
            .Returns(Task.Run(() => GetSampleTests()));

            var sampleBusiness = new SampleBusiness(mock.Object);

            var expected = GetSampleTests().Select(t => t.Title);

            // Act
            var actual = await sampleBusiness.GetTestsAsync();

            // Assert
            Assert.IsNotNull(actual);

            Assert.AreEqual(expected.Count(), actual.Count());

            for (int i = 0; i < expected.Count(); i++)
            {
                Assert.AreEqual(expected.ElementAt(i), actual.ElementAt(i));
            }
        }