iOS Testing
A test suite that takes 45 minutes to run is not a safety net — it is a speed bump. Engineers skip it, merge without waiting, and the feedback loop that automated testing is supposed to provide collapses. Slow iOS CI is one of the most consistent complaints in mobile development,
Erlang
Erlang was designed for systems that must not fail — telecom infrastructure running nine nines of uptime. That heritage means Erlang's testing tools are mature, battle-tested, and deeply integrated with the OTP framework. EUnit handles unit tests in a lightweight, embeddable way. Common Test provides a full-featured framework for
PHP
Infection is the leading mutation testing framework for PHP. It operates on the Abstract Syntax Tree (AST) level — generating mutants by altering your source code according to predefined mutation operators — then running your test suite against each change. A test suite that kills 80%+ of mutants provides much stronger behavioral
Go
CLI tools are deceptively hard to test. They interact through stdin and stdout, depend on environment variables and working directories, return exit codes instead of values, and often spawn subprocesses. Most teams settle for a few manual smoke tests and call it done. When the CLI breaks in a way
iOS Testing
UI bugs are the ones users actually notice. A misaligned button, a truncated label, a broken dark mode layout — none of these are caught by a unit test that only verifies a view model property. Snapshot testing exists to close this gap. It captures the visual output of your UI
Haskell
Testing in a purely functional language like Haskell has a reputation for being either trivially easy (pure functions are referentially transparent, so you just call them) or surprisingly complex (dealing with IO, monads, and laziness). The truth is somewhere in the middle. HSpec, inspired by Ruby's RSpec, gives
Tools & Frameworks
Most PHP projects end up with three separate testing tools: PHPUnit for unit tests, something else for HTTP integration, and a browser automation library bolted on for end-to-end scenarios. Each tool has its own configuration format, its own runner, and its own reporting conventions. Codeception was built to fix exactly
Shell Testing
Shell scripts are the connective tissue of most infrastructure: they bootstrap servers, run deployments, process log files, and glue together a dozen other tools. Yet most teams test bash scripts the same way they have for decades — by running them manually and hoping nothing breaks. BATS (Bash Automated Testing System)
F#
F# testing has two solid options: you can use the C# testing frameworks (NUnit, xUnit) via FsUnit, or you can use Expecto — a framework built specifically for F# that embraces functional design with first-class functions, composable test lists, and native async support. Both approaches work; Expecto tends to feel more
Clojure
Clojure's testing ecosystem is unusually rich for a language its size. At the foundation sits clojure.test, included in the standard library and requiring no dependencies. On top of that, Midje adds a readable BDD-style syntax with powerful stubbing. And test.check brings property-based testing — Clojure's
Testing
Semaphore CI is a hosted continuous integration and delivery platform focused on speed. Its main selling points are fast build machines and first-class support for test parallelism — both within a single job and across multiple jobs. If your test suite takes too long and you want parallel execution without complex
Testing
Drone CI is a container-native CI/CD platform that uses Docker for every step of the pipeline. Unlike CI tools that add Docker support as an afterthought, Drone was designed from the ground up around containers — each pipeline step runs in its own Docker image with complete isolation. This makes