public async Task GetTestByIdAsync_WhenGivenAValidId_ReturnsTheEquivalentTest()
{
// Arrange
int testId = 1;
mock.Setup(m => m.GetTestByIdAsync(testId))
.Returns(Task.Run(() => GetSampleTests().SingleOrDefault(t => t.Id == testId)));
var sampleBusiness = new SampleBusiness(mock.Object);
string expected = GetSampleTests().SingleOrDefault(t => t.Id == testId).Title;
// Act
string actual = await sampleBusiness.GetTestByIdAsync(testId);
// Assert
Assert.IsNotNull(actual);
Assert.AreEqual(expected, actual);
}
