public void Duplicate()
{
var tableClient = JoshCodes.Persistence.Azure.Storage.Settings.StorageAccount().CreateCloudTableClient();
var entityStore = new ExampleStore(tableClient);
var key = Guid.NewGuid().ToString();
var entityWrapper1 = entityStore.Create();
bool isDuplicate = false;
try
{
var entityWrapper2 = entityStore.Create(entityWrapper1.Key, -1, 0.0, "foo", null, Guid.Empty);
}
catch (Exception ex)
{
isDuplicate = ex.IsProblemResourceAlreadyExists();
}
Assert.AreEqual(true, isDuplicate);
}
public void BruteForce()
{
var tableClient = JoshCodes.Persistence.Azure.Storage.Settings.StorageAccount().CreateCloudTableClient();
var entityStore = new ExampleStore(tableClient);
var entityWrapper1 = entityStore.Create(Guid.NewGuid(), 0, 0.0, "ConcurrentModification", null, Guid.Empty);
var entityWrapper2 = (Example)entityStore.Find(entityWrapper1.Key);
int totalMods = 0;
Thread t1 = new Thread(new ThreadStart(delegate
{
int i = 0;
while (i < 100)
{
int cv;
if(entityWrapper1.ChangeIntAtomic(i, i+1, out cv))
{
i++;
lock(this)
{
totalMods++;
}
} else
{
i = cv;
}
}
}));
Thread t2 = new Thread(new ThreadStart(delegate
{
int i = 0;
while (i < 100)
{
int cv;
if(entityWrapper2.ChangeIntAtomic(i, i+1, out cv))
{
i++;
lock(this)
{
totalMods++;
}
} else
{
i = cv;
}
}
}));
t1.Start();
t2.Start();
t1.Join();
t2.Join();
Assert.AreEqual(totalMods, 100);
}
public void DoesUpdate()
{
var tableClient = JoshCodes.Persistence.Azure.Storage.Settings.StorageAccount().CreateCloudTableClient();
var entityStore = new ExampleStore(tableClient);
var entityWrapper = entityStore.Create();
int currentValue;
entityWrapper.ChangeIntAtomic(entityWrapper.Int, 0, out currentValue);
Assert.AreEqual(0, currentValue);
Assert.AreEqual(0, entityWrapper.Int);
}