PoE contract address query

[maurolacy]

Closes #168.

[alpe]

This should work already. Awesome start. I have added some comments and nits to help with idiomatic Go.

Please run make format

[alpe]

btw the TestPoEAddPostGenesisValidatorWithGovProposalEngagementPoints system test was failing but not because of your code. It became flickering in the last weeks and I have not had the time to investigate.

[maurolacy]

btw the TestPoEAddPostGenesisValidatorWithGovProposalEngagementPoints system test was failing but not because of your code. It became flickering in the last weeks and I have not had the time to investigate.

I still have to extend ViewKeeperMock with the new interface. That is the reason for some failed tests.

[alpe]

Good refactorings

[alpe]

Almost perfect. Very good test coverage 💐

[alpe]

👍 good to have the switch here.
you can also use require.Equals(t, types.PoEContractTypeStaking, got) instead but it is lacking the right instance of t so that the whole test fails and not the single case

[maurolacy]

Yes, I cannot do that here easily, because of table tests.

[alpe]

I meant the following mock function would do the same as here or L318 but may be more readable

				GetPoEContractAddressFn: func(ctx sdk.Context, contractType poetypes.PoEContractType) (sdk.AccAddress, error) {
					assert.Equal(t, poetypes.PoEContractTypeUndefined, contractType)
					return nil, sdkerrors.Wrap(wasmtypes.ErrInvalid, "contract type")
				}},