Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).
Awaitility is a small Java DSL for synchronizing asynchronous operations
Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (258,545/258,545 variants pass). No account, no auth token, no paid tier.
A simple Swift package for measuring and reporting the time taken for operations
Gatling plugin for JDBC — SQL queries, batch operations, and stored procedures with HikariCP connection pooling
Feature-rich filesystem mocking for Go tests: comprehensive error injection, latency simulation, write operations, operation statistics, and standalone file handles. Built on testing/fstest.MapFS with comprehensive fs.FS interface support.