I'm currently stuck while adding the final test cases for RateLimitsByChainID.

In the RateLimitsByChainID query service, it validates if the channel has been created and retrieves the channel client state using the provided port id (it uses the default port id transport) and channel id. As I'm adding test cases for this, in order to bypass the validation check, I need to mock two different chains and initialize a channel using the ibctesting package. When i try with the upstream ibctesting package from ibc-go, it seems to work well; however, i find it strange that it doesn't work with the internal customized ibctesting package that we have due to the following error message Error: could not retrieve module from port-id: ports/mock: capability not found. I am debugging this line by line, comparing it with the upstream code to identify any issues, but the issue is not immediately apparent.

@vuong177 @GNaD13 @anhductn2001 Could you lend me a hand with this when you have a moment? I'd appreciate your insights into why this might be happening. You can refer to this test case TestChanOpenInit() that i am debugging with. I will give an update if i find any.