Planning Oracle To Postgres Migration Integration Testing

Planning Integration Testing for Oracle-to-PostgreSQL Migration

Analyze a single target project to identify data access artifacts that require integration testing, then produce a structured, actionable testing plan.

Workflow

Progress:
- [ ] Step 1: Identify data access artifacts
- [ ] Step 2: Classify testing priorities
- [ ] Step 3: Write the testing plan

Step 1: Identify data access artifacts

Scope to the target project only. Find classes and methods that interact directly with the database — repositories, DAOs, stored procedure callers, service layers performing CRUD operations.

Step 2: Classify testing priorities

Rank artifacts by migration risk. Prioritize methods that use Oracle-specific features (refcursors, TO_CHAR, implicit type coercion, NO_DATA_FOUND) over simple CRUD.

Step 3: Write the testing plan

Write a markdown plan covering:

• List of testable artifacts with method signatures

• Recommended test cases per artifact

• Seed data requirements

• Known Oracle→PostgreSQL behavioral differences to validate

• Coverage mapping that ensures every database touchpoint has at least one test case (or a justified set of cases for high-risk methods)

When defining recommended test cases, explicitly include:

• Text parameter behavior for both empty string and NULL/missing values.

• Datetime/timezone assertions, including round-trip and comparison behavior.

• Cases where destination columns use timestamp without time zone or timestamp(0), with explicit timezone-application expectations.

Output

Write the plan to: .github/oracle-to-postgres-migration/Reports/{TARGET_PROJECT} Integration Testing Plan.md

Key Constraints

• Single project scope — only plan tests for artifacts within the target project.

• Database interactions only — skip business logic that does not touch the database.

• Oracle is the golden source — tests should capture Oracle's expected behavior for comparison against PostgreSQL.

• No multi-connection harnessing — migrated applications are copied and renamed (e.g., MyApp.Postgres), so each instance targets one database.