testing▌

Encore.ts uses standard TypeScript testing tools. The recommended setup is Vitest.

$20

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.

aws-penetration-testing

Comprehensive Rust testing patterns for writing reliable, maintainable tests following TDD methodology.

Comprehensive pytest testing strategies with TDD, fixtures, mocking, and coverage best practices. \n \n Covers TDD methodology (red-green-refactor cycle), parametrization, fixtures with multiple scopes, and mocking patterns for unit and integration testing \n Includes pytest fundamentals: assertions, markers for test selection, exception testing, and async test support with pytest-asyncio \n Provides practical patterns for testing APIs, databases, file operations, and class methods with real cod

E2E tests use Playwright. Located in apps/examples/e2e/ (SDK examples) and apps/dotcom/client/e2e/ (tldraw.com).

Run pytest with coverage reporting to identify and eliminate untested code lines. \n \n Generates annotated source files in cov_annotate/ directory, with ! markers indicating uncovered lines \n Supports module-specific coverage checks via --cov=module_name and targeted test runs on specific test files \n Workflow: run coverage, review annotated files for uncovered lines, write tests to cover gaps, repeat until 100% coverage achieved \n

Modern best practices for R package testing using testthat 3+.

Pytest-based testing strategies for Temporal workflows with time-skipping, mocking, and replay validation. \n \n Covers unit testing (WorkflowEnvironment with time-skipping), integration testing (mocked activities), and replay testing for determinism validation \n Time-skipping enables month-long workflows to execute in seconds; ActivityEnvironment isolates activity logic for fast feedback \n Includes progressive disclosure resources for unit testing, integration testing, replay testing, and loc