API: Create endpoint for fetching all revisions of a variable

[rajdip-b]

Description

Create an endpoint that will take in the variableId and environmentId and return all the revisions that exist for the variable. The endpoint will look like this:

GET /api/variable/:variableId/revisions/:environmentId

Solution

We highly encourage you to go through the existing code to understand how permissions work, and reuse it in your function.

Feature implementation

• Update variable.service.ts to include a method named getRevisionsOfVariable
• Update variable.controller.ts to link an endpoint for the service function

Tests

Add the following tests in variable.e2e.spec.ts

• should be able to fetch all revisions (2-3) of a variable
• should return [] if the variable has no revision
• should throw an error if the variable does not exist
• should throw an error if the variable is not accessible by the user

[yogesh1801]

/attempt

[github-actions[bot]]

Assigned the issue to @yogesh1801!