jwk unit tests and jwk genesis params fix

[2xburnt]

This pull request adds comprehensive unit and integration tests for the JWK module, improves defensive programming in JWT validation, and enhances migration and module registration logic. The changes focus on increasing test coverage, improving robustness, and ensuring correct module behavior.

Testing improvements:

• Added extensive unit tests for the JWK module, including keeper logic, audience operations, genesis import/export/validation, and migration flows in the following files: x/jwk/keeper/keeper_test.go, x/jwk/keeper/audience_test.go, x/jwk/keeper/migrations_test.go, x/jwk/genesis_test.go, and x/jwk/migrations/v1/migration_test.go. This ensures that all major module functions are covered and validated. [1] [2] [3] [4] [5]

• Added a shell script scripts/test-coverage.sh to run Go tests with coverage, filter out generated protobuf files, and display summary statistics for overall and per-module coverage, highlighting areas with 0% or low coverage.

Defensive programming and robustness:

• Improved the ValidateJWT query handler to add a panic recovery guard around JWT parsing, check for empty JWT input, and ensure per-call JWT options for thread safety, preventing unexpected panics and improving error handling.

• Fixed a bug in audience pagination by checking for a nil pagination request before accessing its fields, preventing potential panics on invalid requests.

Migration and module registration enhancements:

• Added interface marker methods to AppModule to clarify module instantiation and interface compliance, improving maintainability and clarity.

• Enhanced AppModule.RegisterServices to explicitly register message/query servers and migrations, ensuring correct initialization and upgrade paths for the module.

x/jwk/types/params.go change

➜  xion git:(fix/jwk-unit-tests) ✗ git checkout release/v21 x/jwk/types/params.go                             
Updated 1 path from e852cb1
➜  xion git:(fix/jwk-unit-tests) ✗ go test ./x/jwk -v | grep -v -E '(^[-=]|PASS)'
    genesis_test.go:268: 
            Error Trace:    /Users/greg/Projects/burnt/xion/x/jwk/genesis_test.go:268
            Error:          An error is expected but got nil.
            Test:           TestGenesisValidation/invalid_params
    --- FAIL: TestGenesisValidation/invalid_params (0.00s)
FAIL
FAIL    github.com/burnt-labs/xion/x/jwk    0.424s
FAIL
➜  xion git:(fix/jwk-unit-tests) ✗ 

[Copilot]

Pull Request Overview

This pull request adds comprehensive unit and integration tests for the JWK module while fixing parameter validation and improving defensive programming. The changes significantly enhance test coverage and module robustness.

Key changes include:

• Comprehensive test suite for JWK module components (keeper, queries, messages, migrations, genesis)
• Fixed parameter validation to prevent zero values for deployment gas and time offset
• Enhanced JWT validation with panic safety guards and empty input validation
• Fixed audience pagination bug by checking for nil pagination requests
• Added test coverage script to monitor code quality

Reviewed Changes

Copilot reviewed 19 out of 20 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
x/jwk/types/params.go	Fixed parameter validation to require positive values for deployment gas and time offset
x/jwk/keeper/query_validate_jwt.go	Added panic recovery guards and empty JWT input validation for defensive programming
x/jwk/keeper/query_audience.go	Fixed nil pagination request bug in audience pagination
x/jwk/module.go	Added interface marker comments to clarify module instantiation
scripts/test-coverage.sh	Added coverage script to monitor test quality and identify low-coverage areas

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