Build Test Verify Agent Skill

Build, Test, and Verify — Bitwarden iOS

Initial Setup

brew bundle                  # Install Homebrew dependencies
./Scripts/bootstrap.sh       # Generate Xcode projects, install Mint packages, set up git hooks

Git hooks set up by bootstrap.sh:

• post-checkout / post-merge — automatically re-run bootstrap.sh

Project Generation

.xcodeproj files are gitignored and must be generated before building:

mint run xcodegen --spec project-pm.yml    # Password Manager
mint run xcodegen --spec project-bwa.yml   # Authenticator
mint run xcodegen --spec project-bwk.yml   # BitwardenKit
mint run xcodegen --spec project-bwth.yml  # Test Harness

Or run all at once via ./Scripts/bootstrap.sh.

Building

./Scripts/build.sh project-pm.yml Bitwarden Simulator       # PM for simulator
./Scripts/build.sh project-bwa.yml Authenticator Simulator   # Authenticator for simulator
./Scripts/build.sh project-bwth.yml TestHarness Simulator    # Test Harness for simulator
./Scripts/build.sh project-pm.yml Bitwarden Device           # PM for device

Running Tests

Always read the simulator config files before running tests:

DEVICE=$(tr -d '\n' < .test-simulator-device-name)
OS=$(tr -d '\n' < .test-simulator-ios-version)

Then run tests with:

xcodebuild test \
  -workspace Bitwarden.xcworkspace \
  -scheme Bitwarden \
  -testPlan Bitwarden-Default \
  -destination "platform=iOS Simulator,name=$DEVICE,OS=$OS"

Current values (as of last update): device iPhone 17 Pro, OS 26.5. Do not hardcode these — always read from .test-simulator-device-name and .test-simulator-ios-version at runtime, as they change when the project upgrades its simulator target.

CI runs all -Default test plans on PRs to main, commits to main, and release branches. Test execution order is randomized (randomExecutionOrder: true).

Snapshot tests are currently disabled. Do not run or re-record them. If you encounter a snapshot test, prefix the function name with disable (e.g., disabletest_snapshot_defaultState).

Lint, Format, Spell Check

mint run swiftlint                        # Lint (custom rules: todo_without_jira, weak_navigator, style_guide_font)
mint run swiftformat .                    # Auto-fix formatting (4-space indent, Swift 6.2)
mint run swiftformat --lint --lenient .   # Check formatting without fixing
typos                                     # Spell check

SwiftLint and SwiftFormat run automatically as post-compile scripts (configured in project-pm.yml).

Code Generation

Run automatically in pre-build phases; trigger manually when needed:

# Mock generation — run from an Xcode build phase (BUILD_DIR is set automatically by Xcode)
# To run standalone, supply BUILD_DIR manually — see the script header for the one-liner
./Scripts/generate-mocks.sh BitwardenShared    # default if argument omitted
./Scripts/generate-mocks.sh AuthenticatorShared
./Scripts/generate-mocks.sh BitwardenKit

# Asset/localization code generation
mint run swiftgen config run --config swiftgen-bwr.yml   # BitwardenResources (most common)
mint run swiftgen config run --config swiftgen-pm.yml    # Password Manager
mint run swiftgen config run --config swiftgen-bwa.yml   # Authenticator
mint run swiftgen config run --config swiftgen-bwth.yml  # Test Harness

Tooling Reference

| Tool | Config | Purpose |

|------|--------|---------|

| XcodeGen | project-*.yml | Generates .xcodeproj from YAML specs |

| Mint | Mintfile | Swift tool package manager |

| SwiftLint | .swiftlint.yml | Linting with custom rules |

| SwiftFormat | .swiftformat | Code formatting |

| Sourcery | */Sourcery/sourcery.yml | Mock generation (AutoMockable) |

| SwiftGen | swiftgen-*.yml | Asset/localization code generation |

| typos | project config | Spell checking |

| Fastlane | fastlane/Fastfile | CI/CD automation |

Common Failures

| Problem | Cause | Fix |

|---------|-------|-----|

| .xcodeproj not found | Files are gitignored | Run ./Scripts/bootstrap.sh |

| MockXxx not found | Sourcery not run | Add // sourcery: AutoMockable, run Sourcery or build |

| Snapshot test runs | Snapshots are currently disabled | Prefix function name with disable (e.g., disabletest_snapshot_defaultState) |

| Extension crash on unlock | Argon2id KDF > 64 MB | Check maxArgon2IdMemoryBeforeExtensionCrashing in Constants.swift |

| SwiftLint TODO warning | Missing JIRA ticket | // TODO: PM-12345 - description |

Debug Tips

• Error reporting: ErrorReporter protocol + OSLogErrorReporter for development
• Flight recorder: In-app logging for debugging production issues
• SDK diagnostics: Xcode console errors prefixed BitwardenSdk
• Network debugging: Set breakpoints in APIService implementations in Networking/
• State debugging: print(subject.state) in processor tests to inspect state changes