public void Async_Dispatch_can_change_exception_thrown()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.NotEmpty(c.Exception.Message);
Assert.Equal("Bang!", c.OriginalException.Message);
c.Exception = new Exception("Bing!");
Assert.False(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var operation = new Task <string>(() => { throw new Exception("Bang!"); });
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never()));
operation.Start();
Assert.Equal(
"Bing!",
Assert.Throws <AggregateException>(() => interceptTask.Wait()).InnerException.Message);
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Async_Dispatch_dispatches_to_all_registered_interceptors_even_if_task_is_canceled()
{
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = cancellationTokenSource.Token;
var operation = new Task <string>(() => "0", cancellationToken);
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never()));
cancellationTokenSource.Cancel();
Assert.Throws <AggregateException>(() => interceptTask.Wait());
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Async_Dispatch_can_prevent_exception_from_being_thrown_and_return_result_instead()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.OriginalResult);
Assert.Equal("Bang!", c.OriginalException.Message);
c.Exception = null;
c.Result = "N";
Assert.False(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var operation = new Task <string>(() => { throw new Exception("Bang!"); });
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never()));
operation.Start();
interceptTask.Wait();
Assert.Equal("N", interceptTask.Result);
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Execution_of_async_operation_can_be_suppressed_by_setting_exception_with_everything_else_still_happening()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.OriginalException);
if (c.Exception == null)
{
c.Exception = new Exception("Bing!");
}
Assert.True(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Equal("Bing!", c.Exception.Message);
Assert.Null(c.OriginalException);
Assert.True(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var operation = new Task <string>(() => "0");
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
Assert.Equal(
"Bing!",
Assert.Throws <AggregateException>(() => interceptTask.Wait()).InnerException.Message);
}
public void Async_Dispatch_dispatches_to_all_registered_interceptors_and_aggregates_results_of_operations()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.NotEmpty(c.Result);
Assert.Equal("0", c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var operation = new Task <string>(() => "0");
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => interceptionContext.Result = interceptionContext.Result + i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never()));
operation.Start();
interceptTask.Wait();
Assert.Equal("0123", interceptTask.Result);
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Async_Dispatch_executes_operation_and_returns_result_if_no_dispatchers_registered()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
var operation = new Task <string>(() => "0");
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => interceptionContext.Result = interceptionContext.Result + i.CallMe(interceptionContext));
operation.Start();
interceptTask.Wait();
Assert.Equal("0", operation.Result);
Assert.Equal("0", interceptTask.Result);
}
public void Execution_of_async_operation_can_be_suppressed_explicitly_with_everything_else_still_happening()
{
var interceptionContext = new DbCommandInterceptionContext <string>().AsAsync();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.OriginalException);
Assert.Null(c.OriginalException);
c.SuppressExecution();
Assert.True(c.IsSuppressed);
},
c =>
{
Assert.True(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.OriginalException);
Assert.Null(c.OriginalException);
Assert.True(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var operation = new Task <string>(() => "0");
var interceptTask = dispatcher.DispatchAsync(
() => operation,
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
interceptTask.Wait();
Assert.Null(interceptTask.Result);
}
/// <summary>
/// Sends <see cref="IDbCommandInterceptor.ReaderExecuting" /> and
/// <see cref="IDbCommandInterceptor.ReaderExecuted" /> to any <see cref="IDbCommandInterceptor" />
/// interceptors that are registered on <see cref="Interception" /> before/after making a
/// call to <see cref="DbCommand.ExecuteReaderAsync(CommandBehavior, CancellationToken)" />.
/// </summary>
/// <remarks>
/// Note that the result of executing the command is returned by this method. The result is not available
/// in the interception context passed into this method since the interception context is cloned before
/// being passed to interceptors.
/// </remarks>
/// <param name="command">The command on which the operation will be executed.</param>
/// <param name="cancellationToken">The cancellation token for the asynchronous operation.</param>
/// <param name="interceptionContext">Optional information about the context of the call being made.</param>
/// <returns>The result of the operation, which may have been modified by interceptors.</returns>
public virtual Task <DbDataReader> AsyncReader(
DbCommand command, CancellationToken cancellationToken, DbCommandBaseInterceptionContext interceptionContext)
{
Check.NotNull(command, "command");
Check.NotNull(interceptionContext, "interceptionContext");
var clonedInterceptionContext = new DbCommandInterceptionContext <DbDataReader>(interceptionContext);
if (!clonedInterceptionContext.IsAsync)
{
clonedInterceptionContext = clonedInterceptionContext.AsAsync();
}
return(InternalDispatcher.DispatchAsync(
() => command.ExecuteReaderAsync(clonedInterceptionContext.CommandBehavior, cancellationToken),
clonedInterceptionContext,
i => i.ReaderExecuting(command, clonedInterceptionContext),
i => i.ReaderExecuted(command, clonedInterceptionContext)));
}
/// <summary>
/// Sends <see cref="IDbCommandInterceptor.ScalarExecuting" /> and
/// <see cref="IDbCommandInterceptor.ScalarExecuted" /> to any <see cref="IDbCommandInterceptor" />
/// interceptors that are registered on <see cref="Interception" /> before/after making a
/// call to <see cref="DbCommand.ExecuteScalarAsync(CancellationToken)" />.
/// </summary>
/// <remarks>
/// Note that the result of executing the command is returned by this method. The result is not available
/// in the interception context passed into this method since the interception context is cloned before
/// being passed to interceptors.
/// </remarks>
/// <param name="command">The command on which the operation will be executed.</param>
/// <param name="cancellationToken">The cancellation token for the asynchronous operation.</param>
/// <param name="interceptionContext">Optional information about the context of the call being made.</param>
/// <returns>The result of the operation, which may have been modified by interceptors.</returns>
public virtual Task <object> AsyncScalar(
DbCommand command, CancellationToken cancellationToken, DbCommandBaseInterceptionContext interceptionContext)
{
Check.NotNull(command, "command");
Check.NotNull(interceptionContext, "interceptionContext");
var clonedInterceptionContext = new DbCommandInterceptionContext <object>(interceptionContext);
if (!clonedInterceptionContext.IsAsync)
{
clonedInterceptionContext = clonedInterceptionContext.AsAsync();
}
return(InternalDispatcher.DispatchAsync(
() => command.ExecuteScalarAsync(cancellationToken),
clonedInterceptionContext,
i => i.ScalarExecuting(command, clonedInterceptionContext),
i => i.ScalarExecuted(command, clonedInterceptionContext)));
}
public void Execution_of_operation_can_be_suppressed_by_setting_result_with_everything_else_still_happening()
{
var interceptionContext = new DbCommandInterceptionContext <string>();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.False(c.IsAsync);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
if (c.Result == null)
{
c.Result = "N";
}
Assert.True(c.IsSuppressed);
},
c =>
{
Assert.False(c.IsAsync);
Assert.NotEmpty(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.True(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
Assert.Equal(
"N123",
dispatcher.Dispatch(
(Func <string>)(() => { throw new Exception("Bang!"); }),
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => interceptionContext.Result = interceptionContext.Result + i.CallMe(interceptionContext)));
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Operation_Dispatch_can_change_exception_thrown()
{
var interceptionContext = new DbCommandInterceptionContext <string>();
var mockInterceptors = CreateMockInterceptors(
c =>
{
Assert.False(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.Null(c.Exception);
Assert.Null(c.OriginalException);
Assert.False(c.IsSuppressed);
},
c =>
{
Assert.False(c.IsAsync);
Assert.Null(c.Result);
Assert.Null(c.OriginalResult);
Assert.NotEmpty(c.Exception.Message);
Assert.Equal("Bang!", c.OriginalException.Message);
c.Exception = new Exception("Bing!");
Assert.False(c.IsSuppressed);
});
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
var exception = Assert.Throws <Exception>(
() => dispatcher.Dispatch(
(Func <string>)(() => { throw new Exception("Bang!"); }),
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext)));
Assert.Equal("Bing!", exception.Message);
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Once()));
}
public void Interceptors_for_only_the_matching_interface_type_can_be_added_and_removed()
{
var mockInterceptor1 = new Mock <IFakeInterceptor1>();
var mockInterceptor2 = new Mock <IFakeInterceptor2>();
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
dispatcher.Add(mockInterceptor1.Object);
dispatcher.Add(mockInterceptor2.Object);
dispatcher.Dispatch(i => i.CallMe(new DbCommandInterceptionContext <string>()));
mockInterceptor1.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Once());
mockInterceptor2.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never());
dispatcher.Remove(mockInterceptor1.Object);
dispatcher.Remove(mockInterceptor2.Object);
dispatcher.Dispatch(i => i.CallMe(new DbCommandInterceptionContext <string>()));
mockInterceptor1.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Once());
mockInterceptor2.Verify(m => m.CallMe(It.IsAny <DbCommandInterceptionContext <string> >()), Times.Never());
}
public void Operation_Dispatch_is_aborted_if_Executed_interceptor_throws_exception()
{
var interceptionContext = new DbCommandInterceptionContext <string>();
var mockInterceptors = CreateMockInterceptors(
c => { },
c => { throw new Exception("Ba-da-bing!"); });
var dispatcher = new InternalDispatcher <IFakeInterceptor1>();
mockInterceptors.Each(i => dispatcher.Add(i.Object));
Assert.Equal(
"Ba-da-bing!",
Assert.Throws <Exception>(
() => dispatcher.Dispatch(
() => "N",
interceptionContext,
i => i.CallMeFirst(interceptionContext),
i => i.CallMe(interceptionContext))).Message);
mockInterceptors.Each(i => i.Verify(m => m.CallMeFirst(interceptionContext), Times.Once()));
mockInterceptors.First().Verify(m => m.CallMe(interceptionContext), Times.Once());
mockInterceptors.Skip(1).Each(i => i.Verify(m => m.CallMe(interceptionContext), Times.Never()));
}