scaffolding-oracle-to-postgres-migration-test-project

scaffolding-oracle-to-postgres-migration-test-project

Scaffolding an Integration Test Project for Oracle-to-PostgreSQL Migration

Creates a compilable, empty xUnit test project with transaction management and seed data infrastructure for a single target project. Run once per project before writing tests.

Workflow

Progress:
- [ ] Step 1: Inspect the target project
- [ ] Step 2: Create the xUnit test project
- [ ] Step 3: Implement transaction-rollback base class
- [ ] Step 4: Implement seed data manager
- [ ] Step 5: Verify the project compiles

Step 1: Inspect the target project

Read the target project's .csproj to determine the .NET version and existing package references. Match these versions exactly — do not upgrade.

Step 2: Create the xUnit test project

• Target the same .NET version as the application under test.

• Add NuGet packages for Oracle database connectivity and xUnit.

• Add a project reference to the target project only — no other application projects.

• Add an appsettings.json configured for Oracle database connectivity.

Step 3: Implement transaction-rollback base class

• Create a base test class that opens a transaction before each test and rolls it back after.

• Catch and handle all exceptions to guarantee rollback.

• Make the pattern inheritable by all downstream test classes.

Step 4: Implement seed data manager

• Create a global seed manager for loading test data within the transaction scope.

• Do not commit seed data — transactions roll back after each test.

• Do not use TRUNCATE TABLE — preserve existing database data.

• Reuse existing seed files if available.

• Establish a naming convention for seed file location that downstream test creation will follow.

Step 5: Verify the project compiles

Build the test project and confirm it compiles with zero errors before finishing.

Key Constraints

• Oracle is the golden behavior source — scaffold for Oracle first.

• Keep to existing .NET and C# versions; do not introduce newer language or runtime features.

• Output is an empty test project with infrastructure only — no test cases.

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