Testing
Bitbucket Pipelines is Atlassian's built-in CI/CD service. If your team uses Bitbucket repositories, Pipelines is already available — no separate CI server to provision or maintain. Its tight integration with Jira, Bamboo, and the rest of the Atlassian ecosystem makes it a natural choice for Atlassian-first teams. This
Rust
Wasmtime is a fast, standards-compliant WebAssembly runtime from the Bytecode Alliance. Its Rust crate lets you load, instantiate, and call WASM modules from a Rust host — making it ideal for host-side unit tests that verify WASM module behavior, test WASI system calls in a controlled sandbox, and validate component model
WebAssembly
WebAssembly performance is close to native — but "close" needs to be measured. Whether you're evaluating the overhead of crossing the WASM/JS boundary, comparing execution speed between runtimes, or profiling where your WASM module spends its time, you need specific tools: Criterion for Rust-level benchmarks, Wasmer
Testing
API-first development means writing your OpenAPI specification before writing code. But there's a gap between having a spec and having something to develop against — until you write the API, frontend developers are blocked. Prism closes this gap. Give it an OpenAPI (Swagger) specification and it instantly runs a
Testing
Most API mocking libraries intercept calls at the code level — patching fetch, wrapping axios, or monkey-patching network modules. This approach breaks easily when libraries change internals or when you switch HTTP clients. Mock Service Worker (MSW) takes a different approach. In browsers, it registers an actual service worker that intercepts
Rust
wasm-pack is the standard toolchain for building and testing Rust code compiled to WebAssembly. Its wasm-pack test command runs your Rust tests inside a real browser (headless Chrome, Firefox, or Safari) or under Node.js, giving you confidence that your WASM module behaves correctly in the environments where it will
Testing
Most API mocking tools only speak HTTP. That's fine for REST APIs, but modern systems include gRPC services, legacy TCP protocols, SMTP servers, and binary protocols that HTTP-only tools can't touch. Mountebank is a service virtualization tool that handles multiple protocols through a unified interface. You
Go
Go has had WebAssembly support since Go 1.11 via GOARCH=wasm GOOS=js, and since Go 1.21 via the WASI target GOOS=wasip1. Testing Go WASM code requires a different test runner than the standard go test command — either the wasm_exec.js Node.js harness for browser-targeted
WebAssembly
The WebAssembly Component Model is a standard for composing WASM modules with typed interfaces defined in WIT (WebAssembly Interface Types). It replaces ad-hoc ABI conventions with a formal type system — records, variants, options, results — and generates host and guest bindings automatically via wit-bindgen. Testing components means verifying these interfaces: that
Testing
One of the hardest parts of building integration tests is creating realistic test data. You can write mock responses by hand, but they drift from reality. You can call the real API in tests, but that introduces network dependency and flakiness. Hoverfly solves this with a record-and-replay approach. It runs
Testing
Testing React components that fetch data requires handling asynchronous behavior, loading states, error conditions, and successful renders. The combination of Mock Service Worker (MSW) and React Testing Library gives you a powerful toolkit for writing these tests without mocking at the module level or coupling your tests to implementation details.
Testing
API mocking is one of those techniques that transforms development speed. When backend services are unavailable, slow, or expensive to call in tests, a local mock server lets you develop and test against realistic API responses without any network dependency. Mockoon is the simplest tool available for this job. It&