public void Database_Initialize_without_force_can_be_called_by_multiple_threads_and_initialization_only_happens_once()
{
var countingInitializer = new ThreadSafeCountingInitializer <ContextForCallingInitializer>();
Database.SetInitializer(countingInitializer);
ExecuteInParallel(() => GetDatabaseForInitialization <ContextForCallingInitializer>().Initialize(force: false));
Assert.Equal(1, countingInitializer.Count);
}
public void Database_Initialize_with_force_can_be_called_by_multiple_threads_and_initialization_happens_every_time()
{
var countingInitializer = new ThreadSafeCountingInitializer <ContextForCallingInitializerWithForce>();
Database.SetInitializer(countingInitializer);
ExecuteInParallel(() => GetDatabaseForInitialization <ContextForCallingInitializerWithForce>().Initialize(force: true));
Assert.Equal(20, countingInitializer.Count);
}
public void Database_initializer_can_be_set_by_multiple_threads()
{
var countingInitializer = new ThreadSafeCountingInitializer <ContextForSettingInitializer>();
ExecuteInParallel(() => Database.SetInitializer(countingInitializer));
GetDatabaseForInitialization <ContextForSettingInitializer>().Initialize(force: false);
Assert.Equal(1, countingInitializer.Count);
}
Database_Initialize_without_force_can_be_called_by_multiple_threads_and_initialization_is_attempted_until_one_thread_succeeds()
{
var countingInitializer = new ThreadSafeCountingInitializer <ContextForCallingInitializerWithFailures>(throwFoFirstFive: true);
Database.SetInitializer(countingInitializer);
try
{
ExecuteInParallel(() => GetDatabaseForInitialization <ContextForCallingInitializerWithFailures>().Initialize(force: false));
}
catch (AggregateException ex)
{
Assert.Equal(5, ex.InnerExceptions.Count);
foreach (var innerException in ex.InnerExceptions)
{
Assert.Equal("Fail!", innerException.Message);
}
}
Assert.Equal(6, countingInitializer.Count);
}
