Add integration tests with mock GitHub API server and recorded fixtures

[Copilot]

Implements extensive integration tests for the export and import commands using recorded API fixtures and a local mock server — no network access or tokens required at test time.

Approach

Fixtures were recorded from the real gh-migrate-project-sandbox project #1026, then a lightweight MockGitHubServer (plain http.Server) replays those responses by routing on GraphQL query content. The CLI is spawned as an async child process pointing --base-url at the mock server.

spawn (not spawnSync) is required because the mock server runs in-process — sync spawn blocks the event loop and prevents the server from responding.

Changes

• tests/fixtures/recorded-api-responses.json — Real API responses captured from the sandbox org
• tests/fixtures/graphql-responses.ts — Typed exports that load and re-export the recorded data + synthetic import-flow responses
• tests/integration/mock-server.ts — Routes REST (/meta) and GraphQL requests to fixture responses based on query content matching
• tests/integration/commands.test.ts — 29 tests across export (14), import (12), and error handling (3)
• jest.config.ts / package.json — Jest 30 + ts-jest ESM config, npm run test:integration script
• .github/workflows/ci.yml — integration_tests job added to CI (no secrets needed)

Coverage

Area	What's tested
Export	Project structure, fields/options, views, items with field values, CSV generation, content types, error cases
Import	Full round-trip, project creation, custom fields, status field config, item creation (issues + drafts), field value setting, assignee resolution, custom title, error cases

// Example: tests spawn CLI against mock server
const result = await runCli(
  ['export', '--base-url', server.getBaseUrl(), '--project-owner', 'org', ...],
  { EXPORT_GITHUB_TOKEN: 'fake-token' },
);
expect(result.exitCode).toBe(0);
const data = JSON.parse(readFileSync(projectOutput, 'utf-8'));
expect(data.project.title).toBe('Source project to be migrated');

[Copilot]

Pull request overview

Adds a Jest-based integration test suite for gh-migrate-project that runs the real CLI (export/import) against an in-process mock GitHub API server, replaying recorded fixtures so tests require no network access or secrets.

Changes:

• Introduce a MockGitHubServer that serves /meta + routes GraphQL queries to recorded/synthetic fixture responses.
• Add integration tests that spawn the CLI asynchronously against the mock server and assert export/import behavior.
• Add Jest + ts-jest ESM config, wire integration tests into CI, and update ignore/typecheck config to include tests.

Show a summary per file

File	Description
tsconfig.json	Includes tests/ in TS compilation/typecheck scope.
tests/integration/mock-server.ts	New in-process HTTP server that replays REST/GraphQL fixtures.
tests/integration/commands.test.ts	New integration tests that spawn the CLI against the mock server.
tests/fixtures/graphql-responses.ts	Loads recorded fixture JSON and exports typed responses + synthetic import responses.
tests/fixtures/recorded-api-responses.json	Recorded GitHub API responses used by the mock server.
package.json	Adds Jest/ts-jest deps + test/test:integration scripts.
jest.config.ts	New Jest config for TS + ESM via ts-jest.
eslint.config.mjs	Ignores jest.config.ts and relaxes a test-only lint rule.
.gitignore	Ignores .test-output created by integration tests.
.github/workflows/ci.yml	Adds an integration_tests job and includes it in release gating.

Copilot's findings

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• Files reviewed: 7/11 changed files
• Comments generated: 5