public void TryToUnlockAlienMutex()
{
var mutex = new Mutex();
var counter = 0;
bool isInvalid = false;
var thread1 = new Thread(o =>
{
mutex.Lock();
counter++;
Thread.Sleep(400);
counter--;
mutex.Unlock();
})
{
Name = "Thread 1"
};
thread1.Start();
Thread.Sleep(100);
mutex.Unlock();
mutex.Lock();
Assert.That(counter, Is.EqualTo(0));
mutex.Unlock();
}
public void TestTwoThreadInSameTime()
{
const int threadsCount = 10;
var mutex = new Mutex();
var counter = 0;
var arr = new bool[threadsCount];
var threads = new Thread[threadsCount];
var isInvalidValue = false;
for (var i = 0; i < threadsCount; i++)
{
var currIndex = i;
threads[i] = new Thread(o =>
{
mutex.Lock();
counter++;
Thread.Sleep(50);
if (!isInvalidValue && counter != 1)
{
isInvalidValue = true;
}
Thread.Sleep(50);
counter--;
arr[currIndex] = true;
mutex.Unlock();
})
{
Name = "Thread " + i
};
threads[i].Start();
}
for (var i = 0; i < threadsCount; i++)
{
threads[i].Join();
}
for (var i = 0; i < threadsCount; i++)
{
Assert.That(arr[i], Is.EqualTo(true));
}
Assert.That(isInvalidValue, Is.EqualTo(false));
}
