public async Task TestLinkTutorial_AllUsersAreProcessed()
{
// Setup
var getUsersMock = new Mock <Func <int, Task <User[]> > >();
getUsersMock.Setup(x => x(It.IsAny <int>())).Returns <int>((x) => GetUsersTask(x));
var writeUsersMock = new Mock <Func <User, Task> >();
writeUsersMock.Setup(x => x(It.IsAny <User>())).Returns <User>((x) => WriteUser(x));
// Call
await LinkTutorial.RunSampleOne(getUsersMock.Object, writeUsersMock.Object, _pageCount);
// Validate "get data" called per page
getUsersMock.Verify(x => x(It.IsAny <int>()), Times.Exactly(_pageCount));
// Validate "write data" called per user
writeUsersMock.Verify(x => x(It.IsAny <User>()), Times.Exactly(_usersPerPage * _pageCount));
}
public async Task TestLinkTutorial_WriteOnlyCalledOneAtATime()
{
// Setup
var getUsersMock = new Mock <Func <int, Task <User[]> > >();
getUsersMock.Setup(x => x(It.IsAny <int>())).Returns <int>((x) => GetUsersTask(x));
var currentWriteCount = 0;
var writeUsersMock = new Mock <Func <User, Task> >();
writeUsersMock
.Setup(x => x(It.IsAny <User>()))
.Returns <User>(async(x) =>
{
Assert.AreEqual(0, currentWriteCount);
Interlocked.Increment(ref currentWriteCount);
await WriteUser(x);
Interlocked.Decrement(ref currentWriteCount);
});
// Call
await LinkTutorial.RunSampleOne(getUsersMock.Object, writeUsersMock.Object, _pageCount);
}