## Description
ref: #14158
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## Description
Closes: #12195
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## Description
staking config to remove DefaultPowerReduction global.
I want to see if this would be accepted as its easier to document and show users how to do this.
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## Description
Closes: #8961
SDK allows InitGenesis to return with an empty validator set. In practice, the error for an empty validator set gets thrown in tendermint. To fix this,
* Add non-empty validator set check to the `mm.InitGenesis` function. This will break `simapp.Setup` because it relies on an empty validator set [#comment](https://github.com/cosmos/cosmos-sdk/pull/8909#issuecomment-804850834).
* Update `simapp.Setup` to use a single validator.
* Fix failing tests (Most of them are keeper tests).
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## Description
ref: #8961
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Following up on [#9697](https://github.com/cosmos/cosmos-sdk/pull/9697#pullrequestreview-727295733), this PR is the first step for the #8961.
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## Description
Closes: #7517
ref: [comment](https://github.com/cosmos/cosmos-sdk/pull/9594#issuecomment-872859821)
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* testing: refactore Validation and Delegation handling of x/staking
This Changeset introduces set of improvements for writing tests.
The idea is to create a testing subpackage which will provide functions
to make tests more dev-friendly and wrap higher level use-cases.
Here is a show-up of of creating a service for staking module
for tests.
This PR also changes the `x/staking/types.MsgCreateValidator.Pubkey` from string
to types.Any. This change motivated the other change to show the pattern I'm describing here.
* add validator checks
* type change fixes
* use deprecated
* adding test slashing
* new network comment update
* working on tests
* Fix TestMsgPkDecode test
* Add UnpackInterfaces to MsgCreateValidator
* Fix tests
* Convert bech32 pubkey to proto
* Fix test
* fix v039/migrate_test/TestMigrate
* fix tests
* testslashing: rename Service to Helper
* file rename
* update TestMsgDecode
Co-authored-by: blushi <marie.gauthier63@gmail.com>
Co-authored-by: Amaury Martiny <amaury.martiny@protonmail.com>
Co-authored-by: Cory Levinson <cjlevinson@gmail.com>
