<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺
v ✰ Thanks for creating a PR! ✰
v Before smashing the submit button please review the checkboxes.
v If a checkbox is n/a - please still include it but + a little note why
☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -->
## Description
<!-- Add a description of the changes that this PR introduces and the files that
are the most critical to review.
-->
closes: #9239
---
Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.
- [ ] Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
- [ ] Code follows the [module structure standards](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules/structure.md).
- [ ] Wrote unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] Updated relevant documentation (`docs/`) or specification (`x/<module>/spec/`)
- [ ] Added relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
- [ ] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
- [ ] Re-reviewed `Files changed` in the Github PR explorer
- [ ] Review `Codecov Report` in the comment section below once CI passes
## Description
Tiny optimization: no need to do string formatting to prefix a string with one character.
---
### Author Checklist
*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*
I have...
- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [x] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [x] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [x] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [x] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
* WIP: using encoding config
* Make it compile, test fails
* test should be okay
* Make tests pass
* Add comments
* Convert more tests
* Make TestAnteHandlerSigErrors work
* Make first 2 tests pass
* TestAnteHandlerAccountNumbers
* Use table tests
* Remove print
* Use test table
* TestAnteHandlerSigErrors
* TestAnteHandlerAccountNumbers
* TestAnteHandlerAccountNumbers
* Refactor TestAccount
* Refactor getSignBytes
* TestAnteHandlerAccountNumbersAtBlockHeightZero
* TestAnteHandlerSequences
* TestAnteHandlerFees
* TestAnteHandlerMultiSigner
* TestAnteHandlerBadSignBytes
* TestAnteHandlerSetPubKey
* TestAnteHandlerSigLimitExceeded
* TestCustomSignatureVerificationGasConsumer
* TestAnteHandlerReCheck
* Make all tests pass
* Refactor a little bit more
* Fee test
* SetupTest
* All tests pass
* Refactor to RunTestCase
* Don't use StdFee
* Revert some little stuff
* Finish up last couple of test cases
* Less verbose
* s/TxGenerator/TxConfig
* Add comments
* Indent
* Move KeyTestPubAddr to testdata
* Move testdata to /testutil
* Revert to use signature: nil step in signing
* Add comments
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>