integration-test-v3

name	integration-test-v3
description	Write integration tests for a merged implementation. Branches from main, follows existing Testcontainers patterns, creates PR. Supports FIX mode to address review feedback.
argument-hint	[story-id or issue-number]

You are writing integration tests for a recently merged implementation. Your working directory is the project root (the directory containing CLAUDE.md).

Mode Detection: When {FIX_MODE} is true, skip to the Fix Mode section below. Otherwise, proceed with the full test-writing workflow.

Provided by Orchestrator

• Story ID: {STORY_ID}
• Ticket Title: {TICKET_TITLE}
• Issue Number: {ISSUE_NUMBER}
• Branch: {BRANCH_NAME}
• Repo Owner: {REPO_OWNER}
• Repo Name: {REPO_NAME}
• Implementation PR: {IMPLEMENTATION_PR} (the already-merged implementation PR number)

When running standalone (placeholders appear literally), resolve from context:

REPO_NWO=$(gh repo view --json nameWithOwner -q .nameWithOwner)
REPO_OWNER=$(echo "$REPO_NWO" | cut -d/ -f1)
REPO_NAME=$(echo "$REPO_NWO" | cut -d/ -f2)

Step 0: Load Context

1. Read ../TI-Engineering-Standards/CLAUDE.md and every file it references — all 12 standards files. Pay special attention to standards/testing.md.
2. Read CLAUDE.md — project-specific rules
3. Read ARCHITECTURE.md — system design, database schema

Step 1: Understand the Implementation

1a. Fetch the merged implementation PR diff

gh pr diff {IMPLEMENTATION_PR} --repo {REPO_OWNER}/{REPO_NAME}

1b. Read changed files in full

For each file in the implementation diff, read the complete file to understand the full implementation.

1c. Fetch the issue for acceptance criteria

gh issue view {ISSUE_NUMBER} --repo {REPO_OWNER}/{REPO_NAME}

1d. Read existing integration test patterns

Find and read the project's integration test fixtures and existing tests to understand the established patterns:

• The DatabaseFixture and DatabaseCollection classes (typically in a Fixtures/ folder within the integration test project)
• At least 2 existing test files to understand naming, setup, and assertion patterns
• Any existing endpoint tests

Step 2: Plan Tests

Based on what was implemented, plan which integration tests to write:

New repositories → Repository integration tests:

• Happy path for each public method (CRUD operations)
• Edge cases: empty results, not-found, boundary values
• Unique constraint violations where applicable

New endpoints → Endpoint integration tests:

• Full HTTP request/response cycle
• Validation error scenarios
• Not-found scenarios
• Pagination behavior for list endpoints

New migrations → Migration verification:

• Only if new tables/columns were added and aren't already covered by repository tests

Scope boundaries:

• Integration tests exercise real SQL via Testcontainers — NOT fakes
• Do NOT duplicate unit test scenarios — unit tests cover logic with fakes, integration tests cover real infrastructure
• Focus on what CAN'T be tested with fakes: SQL queries, constraints, migrations, HTTP pipeline

Step 3: Write Tests

Follow these patterns exactly:

Test Class Structure

using FluentAssertions;

namespace {ProjectName}.Integration.Tests.Repositories;

[Collection(DatabaseCollection.Name)]
public class {ClassName}Tests
{
    private readonly DatabaseFixture _db;

    public {ClassName}Tests(DatabaseFixture db)
    {
        _db = db;
    }

    [Fact]
    public async Task Method_name_describes_expected_behavior()
    {
        // Arrange — seed unique test data
        await using var connection = await _db.CreateOpenConnectionAsync();

        // Act — exercise the real repository/endpoint

        // Assert — verify with FluentAssertions
    }
}

Key Patterns

• Collection attribute: Always [Collection(DatabaseCollection.Name)]
• Fixture injection: Constructor parameter DatabaseFixture db
• Connection creation: await _db.CreateOpenConnectionAsync()
• Data isolation: Each test seeds its own data with unique identifiers (e.g., append Guid.NewGuid().ToString()[..8] to names to prevent cross-test collisions)
• Test naming: Snake_case_describing_behavior — e.g., Insert_stores_record_and_returns_id
• Assertions: FluentAssertions — result.Should().NotBeNull(), items.Should().HaveCount(3), etc.
• No mocking: NEVER use Moq, NSubstitute, or any mocking framework
• Cleanup: Tests share a database container but should not depend on other tests' data

Step 4: Build & Test

Use the build and test commands from the project's CLAUDE.md:

1. Build the full solution
2. Run all unit tests (regression check)
3. Run integration tests

If any tests fail, fix them. You have 3 attempts to fix failing tests before reporting as partial.

Step 5: Commit & Push

• Stage specific files by name (never git add .)
• Commit message: {STORY_ID}: Add integration tests for {short description}
• Push: git push -u origin {BRANCH_NAME}

Step 6: Create Pull Request

gh pr create --base main --head {BRANCH_NAME} --title "{STORY_ID}: Integration tests" --body "$(cat <<'EOF'
## Summary

Integration tests for the implementation merged in PR #{IMPLEMENTATION_PR}.

## Test Coverage

| Test Class | Scenarios | Status |
|------------|-----------|--------|
| `ClassNameTests` | [count] scenarios | Pass |

## Tests Added

- [List each test method and what it verifies]

## Patterns Followed

- Testcontainers with `DatabaseFixture` / `DatabaseCollection`
- Data isolation via unique test data per test
- FluentAssertions for all assertions
- No mocking frameworks

Relates to #{ISSUE_NUMBER}
EOF
)"

Step 7: Post Issue Comment (Audit Trail)

gh issue comment {ISSUE_NUMBER} --repo {REPO_OWNER}/{REPO_NAME} --body "$(cat <<'EOF'
## Integration Tests Added

**PR:** #[PR_NUMBER]
**Implementation PR:** #{IMPLEMENTATION_PR}

**Tests written:**
- [List test classes and scenario counts]

**Scenarios covered:**
- [Happy paths, edge cases, error scenarios]

**Status:** Ready for engineering review
EOF
)"

Step 8: Cleanup — Return to main and remove branch

After the PR is created and pushed, return to main so the machine is clean for the next task. The branch is safely attached to the PR — keeping it checked out locally risks the next agent mistaking it for the default branch. Delete both the local and remote branch to prevent stale branch accumulation.

git checkout main
git pull --ff-only
git branch -d {BRANCH_NAME}
git push origin --delete {BRANCH_NAME}

Step 9: Report

STATUS: Complete | Partial | Blocked
MODE: initial
TICKET: {STORY_ID}
BRANCH: {BRANCH_NAME}
PR_NUMBER: [number]
IMPLEMENTATION_PR: {IMPLEMENTATION_PR}

TESTS_ADDED:
- TestClass: [count] scenarios
- TestClass: [count] scenarios

COVERAGE:
- Repository methods tested: [list]
- Endpoint scenarios tested: [list]
- Edge cases: [list]

BUILD: pass | fail
UNIT_TESTS: pass | fail
INTEGRATION_TESTS: pass | fail

CONCERNS:
- Any gaps in test coverage and why

---

Fix Mode (When {FIX_MODE} is true)

When invoked with {FIX_MODE}=true, you are addressing review feedback on an existing integration test PR.

Provided by orchestrator:

• PR Number: {PR_NUMBER}
• Iteration: {ITERATION}
• Story ID: {STORY_ID}
• Branch: {BRANCH_NAME}
• Repo Owner: {REPO_OWNER}
• Repo Name: {REPO_NAME}

Fix Workflow:

1. Load standards — Read all 12 standards files, CLAUDE.md, ARCHITECTURE.md

2. Fetch review comments:

   gh api repos/{REPO_OWNER}/{REPO_NAME}/pulls/{PR_NUMBER}/comments --jq '.[] | {path: .path, line: .line, body: .body}'
   

   Also check top-level review bodies:

   gh api repos/{REPO_OWNER}/{REPO_NAME}/pulls/{PR_NUMBER}/reviews --jq '.[] | select(.state == "CHANGES_REQUESTED") | {body: .body}'
   

3. Parse feedback — Identify file, line, and required fix for each comment

4. Read affected files — Read each file mentioned

5. Apply fixes — Address each review comment

6. Build & test — Full build + all test suites (3 attempts max)

7. Commit & push:

   {STORY_ID}: Address integration test review feedback (iteration {ITERATION})
   

   git push origin {BRANCH_NAME}
   

8. Cleanup: Return to main and remove branch — Switch back to main and delete the branch (local + remote) so the machine is clean for the next task:

   git checkout main
   git pull --ff-only
   git branch -d {BRANCH_NAME}
   git push origin --delete {BRANCH_NAME}
   

9. Report:

   STATUS: Complete | Partial | Blocked
   MODE: fix
   TICKET: {STORY_ID}
   BRANCH: {BRANCH_NAME}
   PR_NUMBER: {PR_NUMBER}
   ITERATION: {ITERATION}
   
   FIXES_APPLIED:
   - path/to/file.cs:line — description of fix
   
   TESTS:
   - All integration tests pass: yes/no
   - All unit tests pass: yes/no
   - Full solution builds: yes/no
   
   UNRESOLVED:
   - Any review comments that could not be addressed and why
   

---