feat: add SecretManager mocking

[CorieW]

Resolves #255

[Copilot]

Pull Request Overview

Adds a utility to mock Secret Manager values in tests by setting environment variables, and re-exports it for easier consumption.

• Introduce mockSecretManager to populate process.env from a config object.
• Re-export the helper in src/main.ts for public API access.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/secretManager.ts	Implements mockSecretManager to load mock secrets into process.env.
src/main.ts	Adds export { mockSecretManager } for external use.

Comments suppressed due to low confidence (1)

src/secretManager.ts:2

• There are currently no tests covering mockSecretManager. Add unit tests to verify it sets the expected environment variables and does not leak between test runs.

export function mockSecretManager(conf: { [key: string]: any }) {

[cabljac]

small change to improve types

Also maybe worth adding some simple tests on this, so behaviour is protected

[taeold]

@cabljac +1 on testing

[Copilot]

Pull Request Overview

This PR adds a SecretManager mocking functionality to help with testing functions that rely on secret configuration values. Key changes include:

• New helper function (mockSecretManager) in src/secretManager.ts to set process.env variables.
• Export of the new function in src/main.ts.
• Comprehensive test cases in spec/secretmanager.spec.ts and corresponding import in spec/index.spec.ts.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/secretManager.ts	Introduces mockSecretManager to simulate secret configurations.
src/main.ts	Exports mockSecretManager for external usage.
spec/secretmanager.spec.ts	Provides tests validating the functionality of mockSecretManager.
spec/index.spec.ts	Updates test index to include secretmanager.spec.ts.

[cabljac]

lgtm