A first-pass program focuses on the top integrations and the top scenarios. Coverage grows from there.
- Inventory integrations
List every external system Salesforce talks to, the direction of data flow, and the integration mechanism (REST, MuleSoft flow, ETL). Rank by business criticality.
- Identify top scenarios
For each high-priority integration, list the top three or five end-to-end scenarios that must work. Capture as test cases.
- Set up sandbox and staging environments
Provision a Full or Partial Copy sandbox and align it with staging copies of every external system. Configure connections, credentials, and test data.
- Automate the scenarios
Pick a tool (Provar, Selenium, custom) and automate the test cases. Aim for runs against every Salesforce release sandbox.
- Build a test data management process
Scripts or playbooks that seed both Salesforce and the staging external systems with matching test data before each test run.
- Schedule against release cycles
Run the suite when sandbox receives a new Salesforce release. Triage failures with the integration team and Salesforce Support before production migrates.
- Integration tests are expensive to run and maintain. The investment pays off only when the suite catches release-breaking issues before production; under-invested suites become noise.
- Test data drift between Salesforce and external systems is the most common cause of false failures. Plan refresh processes carefully.
- Salesforce release schedules can change. Build automation that reacts to actual sandbox release dates, not assumed ones.
- Apex unit tests are not a substitute for integration tests. Mocked callouts can pass while real integrations fail; the layers complement each other.