public async Task TestThirdScenario()
{
var cosmosState = new MockCosmosState();
var database = new MockCosmosDatabase(cosmosState);
var accountContainer = (MockCosmosContainer)await database.CreateContainerAsync(Constants.AccountContainerName);
var imageContainer = (MockCosmosContainer)await database.CreateContainerAsync(Constants.ImageContainerName);
var blobContainer = new MockBlobContainerProvider();
var messagingClient = new MockMessagingClient(blobContainer);
var petImagesClient = new TestPetImagesClient(accountContainer, imageContainer, blobContainer, messagingClient);
string accountName = "MyAccount";
string imageName = "pet.jpg";
// Create an account request payload
var account = new Account()
{
Name = accountName
};
var accountResult = await petImagesClient.CreateAccountAsync(account);
Assert.IsTrue(accountResult.StatusCode == HttpStatusCode.OK);
var task1 = petImagesClient.CreateOrUpdateImageAsync(accountName, new Image()
{
Name = imageName, Content = GetDogImageBytes()
});
var task2 = petImagesClient.CreateOrUpdateImageAsync(accountName, new Image()
{
Name = imageName, Content = GetCatImageBytes()
});
await Task.WhenAll(task1, task2);
Assert.IsTrue(task1.Result.StatusCode == HttpStatusCode.OK);
Assert.IsTrue(task1.Result.StatusCode == HttpStatusCode.OK);
var imageResult = await petImagesClient.GetImageAsync(accountName, imageName);
Assert.IsTrue(imageResult.StatusCode == HttpStatusCode.OK);
byte[] image = imageResult.Resource;
byte[] thumbnail;
while (true)
{
var thumbnailResult = await petImagesClient.GetImageThumbnailAsync(accountName, imageName);
if (thumbnailResult.StatusCode == HttpStatusCode.OK)
{
thumbnail = thumbnailResult.Resource;
break;
}
}
Assert.IsTrue(
(IsDogImage(image) && IsDogThumbnail(thumbnail)) ||
(IsCatImage(image) && IsCatThumbnail(thumbnail)));
}
public async Task TestSecondScenario()
{
var cosmosState = new MockCosmosState();
var database = new MockCosmosDatabase(cosmosState);
var accountContainer = (MockCosmosContainer)await database.CreateContainerAsync(Constants.AccountContainerName);
var imageContainer = (MockCosmosContainer)await database.CreateContainerAsync(Constants.ImageContainerName);
var blobContainer = new MockBlobContainerProvider();
var messagingClient = new MockMessagingClient(blobContainer);
var petImagesClient = new TestPetImagesClient(accountContainer, imageContainer, blobContainer, messagingClient);
string accountName = "MyAccount";
string imageName = "pet.jpg";
// Create an account request payload
var account = new Account()
{
Name = accountName
};
var accountResult = await petImagesClient.CreateAccountAsync(account);
Assert.IsTrue(accountResult.StatusCode == HttpStatusCode.OK);
imageContainer.EnableRandomizedFaults();
var task1 = petImagesClient.CreateImageAsync(accountName, new Image()
{
Name = imageName, Content = GetDogImageBytes()
});
var task2 = petImagesClient.CreateImageAsync(accountName, new Image()
{
Name = imageName, Content = GetDogImageBytes()
});
await Task.WhenAll(task1, task2);
var statusCode1 = task1.Result.StatusCode;
var statusCode2 = task2.Result.StatusCode;
imageContainer.DisableRandomizedFaults();
Assert.IsTrue(statusCode1 == HttpStatusCode.OK || statusCode1 == HttpStatusCode.Conflict || statusCode1 == HttpStatusCode.ServiceUnavailable);
Assert.IsTrue(statusCode2 == HttpStatusCode.OK || statusCode2 == HttpStatusCode.Conflict || statusCode2 == HttpStatusCode.ServiceUnavailable);
if (task1.Result.StatusCode == HttpStatusCode.OK || task2.Result.StatusCode == HttpStatusCode.OK)
{
var imageContentResult = await petImagesClient.GetImageAsync(accountName, imageName);
Assert.IsTrue(imageContentResult.StatusCode == HttpStatusCode.OK);
Assert.IsTrue(IsDogImage(imageContentResult.Resource));
}
}
public async Task TestFirstScenario()
{
// Initialize the mock in-memory DB and account manager.
var cosmosState = new MockCosmosState();
var database = new MockCosmosDatabase(cosmosState);
var accountContainer = await database.CreateContainerAsync(Constants.AccountContainerName);
var petImagesClient = new TestPetImagesClient(accountContainer);
// Create an account request payload
var account = new Account()
{
Name = "MyAccount"
};
// Call CreateAccount twice without awaiting, which makes both methods run
// asynchronously with each other.
var task1 = petImagesClient.CreateAccountAsync(account);
var task2 = petImagesClient.CreateAccountAsync(account);
// Then wait both requests to complete.
await Task.WhenAll(task1, task2);
var statusCode1 = task1.Result.StatusCode;
var statusCode2 = task2.Result.StatusCode;
// Finally, assert that only one of the two requests succeeded and the other
// failed. Note that we do not know which one of the two succeeded as the
// requests ran concurrently (this is why we use an exclusive OR).
Assert.IsTrue(
(statusCode1 == HttpStatusCode.OK && statusCode2 == HttpStatusCode.Conflict) ||
(statusCode1 == HttpStatusCode.Conflict && statusCode2 == HttpStatusCode.OK));
}