Upgrade to @iobroker/testing 5.1.1, remove redundant dependencies, and integrate template tests in main test suite

[Copilot]

This PR upgrades the create-adapter tool to use @iobroker/testing 5.1.1, which now incorporates many test dev-dependencies that can be removed from generated adapter templates. Additionally, it integrates the template creation test into the main test suite and eliminates duplicate test execution in CI.

Key Changes

Dependency Management:

• Updated @iobroker/testing dependency to latest version in generated templates (no version pinning)
• Removed redundant test dependencies now included in @iobroker/testing 5.1.1

Testing Infrastructure:

• Added test:templates npm script that runs the template creation test
• Integrated template creation test into the main test suite (npm test)
• Removed duplicate template creation test step from CI workflow to prevent running the same test twice

Documentation & Process:

• Created migration file with detailed upgrade instructions
• Added changelog entry referencing the migration guide
• Updated .copilot-instructions.md to strengthen requirements for migration files and changelog entries

Dependencies Removed

The following dependencies are no longer added to generated adapter package.json files since they're now included in @iobroker/testing 5.1.1:

Runtime dependencies:

• chai (^4.5.0)
• chai-as-promised (^7.1.2)
• mocha (^11.7.1)
• sinon (^19.0.5)
• sinon-chai (^3.7.0)
• proxyquire (^2.1.3)

Type definitions:

• @types/chai (^4.3.20)
• @types/chai-as-promised (^8.0.2)
• @types/mocha (^10.0.10)
• @types/sinon (^17.0.4)
• @types/sinon-chai (^3.2.12)
• @types/proxyquire (^1.3.31)

Impact

• Generated adapters have cleaner package.json files with fewer dependencies
• All testing functionality remains unchanged as dependencies are provided by @iobroker/testing
• Template creation testing is now part of the standard development workflow
• Reduced dependency management overhead for adapter developers
• Better alignment between local testing and CI pipeline with no duplicate test execution
• @iobroker/testing dependency now automatically resolves to the latest available version

Fixes #1165.

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[Apollon77]

@copilot Please upgrade the iobroker/testing dependency to 5.1.1 to see if CI tests work now

[Copilot]

@copilot Please upgrade the iobroker/testing dependency to 5.1.1 to see if CI tests work now

Updated @iobroker/testing dependency to 5.1.1 in templates/package.json.ts and regenerated all baseline test files. All tests pass with the new version requirement. Commit dd0f309.

[Apollon77]

@copilot Please add to your instructions that the "https://github.com/ioBroker/create-adapter/blob/master/.github/test_template_creation.sh" file should also be executed as part of the tests. This is also executed by the CI tests and was failing before the version increase to 5.1.1

[Apollon77]

@copilot Please also add a migration file and a changelog entry to the PR.

And please finally update your instructions so that this is never forgotten to do!

[Copilot]

@copilot Please add to your instructions that the "https://github.com/ioBroker/create-adapter/blob/master/.github/test_template_creation.sh" file should also be executed as part of the tests. This is ...

Added test:templates script to package.json and included it in the main test suite. The template creation test is now executed when running npm test, ensuring consistency with CI testing. Commit 727afaf.

[Apollon77]

@copilot By incorporating the template generation tests into the "npm run test" the CI now executes this twice because the script is still executed also alone. Please remove the (now) separate test step

[Copilot]

@copilot Please also add a migration file and a changelog entry to the PR.

And please finally update your instructions so that this is never forgotten to do!

Added migration file at docs/updates/20250831_iobroker_testing_51.md with detailed upgrade instructions and changelog entry referencing the migration guide. Also updated .copilot-instructions.md to make migration files and changelog entries a REQUIRED part of all PRs, with clearer formatting and explicit requirements to ensure this is never forgotten. Commit da67959.

[Copilot]

@copilot By incorporating the template generation tests into the "npm run test" the CI now executes this twice because the script is still executed also alone. Please remove the (now) separate test st...

Removed the duplicate template creation test step from the CI workflow. The template generation test now only runs once as part of the main test suite (npm test). Commit c4e7e6f.

[Apollon77]

@copilot No need to specify the exact version here, this should automatically be resolved to the latest available which is ok

[Copilot]

Removed the exact version specification from @iobroker/testing dependency. It now automatically resolves to the latest available version. Commit 8a597b1.