[QA] Add Cypress coverage for Subscription Management (LAT-232)

[HS-QUALIBOT]

Description

Add comprehensive Cypress test coverage for the Subscription Management feature, which includes CRUD operations and lifecycle management for subscriptions.

Endpoints Covered

• POST /subscriptions — Create subscription
• GET /subscriptions/:id — Retrieve subscription
• PUT /subscriptions/:id — Update subscription
• POST /subscriptions/:id/cancel — Cancel subscription
• POST /subscriptions/:id/reactivate — Reactivate subscription

Test Scenarios

Create Subscription (Happy Path)

• Valid payload creation with customer_id, billing details, and interval configuration
• Verifies status: "active" and subscription_id presence in response

Retrieve Subscription

• Fetch existing subscription by ID
• Verify all fields match creation payload

Update Subscription

• Modify subscription attributes (description, plan changes)
• Verify updated fields reflect in response

Subscription Lifecycle

• Active → Cancelled transition verification
• Cancelled → Active reactivation flow
• End-to-end lifecycle test (Create → Retrieve → Update → Cancel → Verify)

Negative Cases

• Invalid customer ID handling (expects 400/IR_00)
• Missing required fields validation (expects 400/IR_00)
• Cancelled subscription update prevention (expects 4xx)
• Invalid status transition handling

Files Added

• cypress-tests/cypress/e2e/spec/Subscription/01-SubscriptionManagement.cy.js — Main test spec with 12 test cases
• cypress-tests/cypress/e2e/configs/Subscription/Commons.js — Subscription connector configuration
• cypress-tests/cypress/fixtures/create-subscription-body.json — Create subscription fixture
• cypress-tests/cypress/fixtures/create-subscription-invalid-customer-body.json — Invalid customer test data
• cypress-tests/cypress/fixtures/create-subscription-missing-fields-body.json — Missing fields test data
• cypress-tests/cypress/fixtures/update-subscription-body.json — Update subscription fixture
• cypress-tests/cypress/support/commands.js — Custom commands (createSubscriptionTest, retrieveSubscriptionTest, updateSubscriptionTest, cancelSubscriptionTest, reactivateSubscriptionTest)

Connector Support

Currently supports: stripebilling

Added to CONNECTOR_LISTS.INCLUDE.SUBSCRIPTION in Utils.js

Source Reference

api_models/subscription.rs — All error codes and response structures aligned with API model definitions

Acceptance Criteria

• All CRUD operations covered with positive and negative cases
• Lifecycle transitions (active → cancelled → active → expired) validated
• Fixture response bodies match actual API responses from api_models/subscription.rs
• Error codes in negative fixtures align with defined error variants in source
• subscription_id stored in globalState and reused across chained test steps
• No accidentally committed debug/result files in the PR

Parent Pipeline Issue

Related to: LAT-232 / QAA-72