There is no QueryWrapper for unit test

[0xhiros]

Most smart contracts are required to query data from other contracts, such as price oracles, etc.
To write unit tests for those things, we need to have mock querier to simulate results of other contracts.

Terra already have TerraQueryWrapper.
Anchor Protocol example

It looks like that Secret Network does not have it, or is there any other way to write unit tests for above cases?