public void GenerationIsThreadSafe()
{
var provider = new CountingMachineInfoProvider();
var trigger = new ManualResetEventSlim();
var threads = new Thread[100];
for (var i = 0; i < threads.Length; i++)
{
threads[i] = new Thread(state =>
{
var provider = (IMachineInfoProvider)state;
trigger.Wait();
HardwareUtils.Init(provider);
HardwareUtils.GetMachineID(provider);
});
threads[i].Start(provider);
}
trigger.Set();
for (var i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
Assert.Equal(3, provider.TotalInvocations);
}
public void ProviderIsNotRetained()
{
WeakReference Setup()
{
var provider = new CountingMachineInfoProvider();
HardwareUtils.Init(provider);
HardwareUtils.GetMachineID(provider);
return(new WeakReference(provider));
}
var provider = Setup();
GC.Collect();
Assert.False(provider.IsAlive);
}
public void ResultIsCached()
{
var provider = new CountingMachineInfoProvider();
HardwareUtils.Init(provider);
HardwareUtils.GetMachineID(provider);
var invocations = provider.TotalInvocations;
for (var i = 0; i < 100; i++)
{
HardwareUtils.Init(provider);
HardwareUtils.GetMachineID(provider);
}
Assert.Equal(invocations, provider.TotalInvocations);
}