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<picture> <source media="(prefers-color-scheme: dark)" srcset="docs/images/ginkgo-dark.png"> <img alt="Ginkgo" src="docs/images/ginkgo.png"> </picture> [![test](https://github.com/onsi/ginkgo/actions/workflows/test.yml/badge.svg?branch=master)](https://github.com/onsi/ginkgo/actions/workflows/test.yml?query=branch%3Amaster) [![Ginkgo Docs](docs/images/docs-badge.svg)](https://onsi.github.io/ginkgo/) [![Sponsor onsi](docs/images/sponsor-badge.svg)](https://github.com/sponsors/onsi) --- # Ginkgo Ginkgo is a mature testing framework for Go designed to help you write expressive specs. Ginkgo builds on top of Go's `testing` foundation and is complemented by the [Gomega](https://github.com/onsi/gomega) matcher library. Together, Ginkgo and Gomega let you express the intent behind your specs clearly: ```go import ( . "github.com/onsi/ginkgo/v2" . "github.com/onsi/gomega" ... ) var _ = Describe("Checking books out of the library", Label("library"), func() { var library *libraries.Library var book *books.Book var valjean *users.User BeforeEach(func() { library = libraries.NewClient() book = &books.Book{ Title: "Les Miserables", Author: "Victor Hugo", } valjean = users.NewUser("Jean Valjean") }) When("the library has the book in question", func() { BeforeEach(func(ctx SpecContext) { Expect(library.Store(ctx, book)).To(Succeed()) }) Context("and the book is available", func() { It("lends it to the reader", func(ctx SpecContext) { Expect(valjean.Checkout(ctx, library, "Les Miserables")).To(Succeed()) Expect(valjean.Books()).To(ContainElement(book)) Expect(library.UserWithBook(ctx, book)).To(Equal(valjean)) }, SpecTimeout(time.Second * 5)) }) Context("but the book has already been checked out", func() { var javert *users.User BeforeEach(func(ctx SpecContext) { javert = users.NewUser("Javert") Expect(javert.Checkout(ctx, library, "Les Miserables")).To(Succeed()) }) It("tells the user", func(ctx SpecContext) { err := valjean.Checkout(ctx, library, "Les Miserables") Expect(err).To(MatchError("Les Miserables is currently checked out")) }, SpecTimeout(time.Second * 5)) It("lets the user place a hold and get notified later", func(ctx SpecContext) { Expect(valjean.Hold(ctx, library, "Les Miserables")).To(Succeed()) Expect(valjean.Holds(ctx)).To(ContainElement(book)) By("when Javert returns the book") Expect(javert.Return(ctx, library, book)).To(Succeed()) By("it eventually informs Valjean") notification := "Les Miserables is ready for pick up" Eventually(ctx, valjean.Notifications).Should(ContainElement(notification)) Expect(valjean.Checkout(ctx, library, "Les Miserables")).To(Succeed()) Expect(valjean.Books(ctx)).To(ContainElement(book)) Expect(valjean.Holds(ctx)).To(BeEmpty()) }, SpecTimeout(time.Second * 10)) }) }) When("the library does not have the book in question", func() { It("tells the reader the book is unavailable", func(ctx SpecContext) { err := valjean.Checkout(ctx, library, "Les Miserables") Expect(err).To(MatchError("Les Miserables is not in the library catalog")) }, SpecTimeout(time.Second * 5)) }) }) ``` Jump to the [docs](https://onsi.github.io/ginkgo/) to learn more. It's easy to [bootstrap](https://onsi.github.io/ginkgo/#bootstrapping-a-suite) and start writing your [first specs](https://onsi.github.io/ginkgo/#adding-specs-to-a-suite). If you have a question, comment, bug report, feature request, etc. please open a [GitHub issue](https://github.com/onsi/ginkgo/issues/new), or visit the [Ginkgo Slack channel](https://app.slack.com/client/T029RQSE6/CQQ50BBNW). ## Capabilities Whether writing basic unit specs, complex integration specs, or even performance specs - Ginkgo gives you an expressive Domain-Specific Language (DSL) that will be familiar to users coming from frameworks such as [Quick](https://github.com/Quick/Quick), [RSpec](https://rspec.info), [Jasmine](https://jasmine.github.io), and [Busted](https://lunarmodules.github.io/busted/). This style of testing is sometimes referred to as "Behavior-Driven Development" (BDD) though Ginkgo's utility extends beyond acceptance-level testing. With Ginkgo's DSL you can use nestable [`Describe`, `Context` and `When` container nodes](https://onsi.github.io/ginkgo/#organizing-specs-with-container-nodes) to help you organize your specs. [`BeforeEach` and `AfterEach` setup nodes](https://onsi.github.io/ginkgo/#extracting-common-setup-beforeeach) for setup and cleanup. [`It` and `Specify` subject nodes](https://onsi.github.io/ginkgo/#spec-subjects-it) that hold your assertions. [`BeforeSuite` and `AfterSuite` nodes](https://onsi.github.io/ginkgo/#suite-setup-and-cleanup-beforesuite-and-aftersuite) to prep for and cleanup after a suite... and [much more!](https://onsi.github.io/ginkgo/#writing-specs). At runtime, Ginkgo can run your specs in reproducibly [random order](https://onsi.github.io/ginkgo/#spec-randomization) and has sophisticated support for [spec parallelization](https://onsi.github.io/ginkgo/#spec-parallelization). In fact, running specs in parallel is as easy as ```bash ginkgo -p ``` By following [established patterns for writing parallel specs](https://onsi.github.io/ginkgo/#patterns-for-parallel-integration-specs) you can build even large, complex integration suites that parallelize cleanly and run performantly. And you don't have to worry about your spec suite hanging or leaving a mess behind - Ginkgo provides a per-node `context.Context` and the capability to interrupt the spec after a set period of time - and then clean up. As your suites grow Ginkgo helps you keep your specs organized with [labels](https://onsi.github.io/ginkgo/#spec-labels) and lets you easily run [subsets of specs](https://onsi.github.io/ginkgo/#filtering-specs), either [programmatically](https://onsi.github.io/ginkgo/#focused-specs) or on the [command line](https://onsi.github.io/ginkgo/#combining-filters). And Ginkgo's reporting infrastructure generates machine-readable output in a [variety of formats](https://onsi.github.io/ginkgo/#generating-machine-readable-reports) _and_ allows you to build your own [custom reporting infrastructure](https://onsi.github.io/ginkgo/#generating-reports-programmatically). Ginkgo ships with `ginkgo`, a [command line tool](https://onsi.github.io/ginkgo/#ginkgo-cli-overview) with support for generating, running, filtering, and profiling Ginkgo suites. You can even have Ginkgo automatically run your specs when it detects a change with `ginkgo watch`, enabling rapid feedback loops during test-driven development. And that's just Ginkgo! [Gomega](https://onsi.github.io/gomega/) brings a rich, mature, family of [assertions and matchers](https://onsi.github.io/gomega/#provided-matchers) to your suites. With Gomega you can easily mix [synchronous and asynchronous assertions](https://onsi.github.io/ginkgo/#patterns-for-asynchronous-testing) in your specs. You can even build your own set of expressive domain-specific matchers quickly and easily by composing Gomega's [existing building blocks](https://onsi.github.io/ginkgo/#building-custom-matchers). Happy Testing! ## Using Ginkgo with Claude Code Ginkgo ships a set of [Claude Code](https://claude.com/claude-code) skills as a plugin, with this repo doubling as the marketplace, so an agent writing specs in *your* project has Ginkgo's idioms, decorators, and gotchas on hand. From inside Claude Code: ``` /plugin marketplace add onsi/ginkgo /plugin install ginkgo@ginkgo ``` (or non-interactively: `claude plugin marketplace add onsi/ginkgo` then `claude plugin install ginkgo@ginkgo`) This installs a family of `ginkgo:*` skills that activate automatically while you write and run specs. Start with `ginkgo:overview`; see the [plugin README](plugins/ginkgo/README.md) for the full list. ## License Ginkgo is MIT-Licensed ## Contributing See [CONTRIBUTING.md](CONTRIBUTING.md) ## Sponsors Sponsors commit to a [sponsorship](https://github.com/sponsors/onsi) for a year. If you're an organization that makes use of Ginkgo please consider becoming a sponsor! <p style="font-size:21px; color:black;">Browser testing via <a href="https://www.testmuai.com/?utm_medium=sponsor&utm_source=ginkgo" target="_blank"> <picture> <source media="(prefers-color-scheme: dark)" srcset="docs/images/testmu-ai-dark.svg"> <img alt="TestMu AI" src="docs/images/testmu-ai.svg" style="vertical-align: middle;" width="250" /> </picture> </a> </p>

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