ContractCase

What it does

Broker integration

ContractCase supports the Pact Broker, while its contracts are not rendered in the Pact Broker UI; the documentation also describes Pactflow as a SaaS broker option.checked 8 Oct 2026

Broker integrations

ContractCase supports the Pact contract broker and identifies Pactflow as a SaaS broker option.checked 8 Oct 2026

Broker limitation

The documentation says the Pact broker cannot render ContractCase contracts in its UI.checked 8 Oct 2026

Broker use

The documentation says a broker records contract files, verification status, and deployment environment information, and is needed for deployment confidence.checked 8 Oct 2026

Contract definition

Contracts are defined on the side of the communication boundary that consumes information and later verified on the side that provides it.checked 8 Oct 2026

Contract lifecycle

Its workflow covers defining contracts, verifying them against providers, and checking compatibility at deployment time.checked 8 Oct 2026

Contract merging limit

ContractCase does not currently support merging contracts, so each contract must be defined in one test file.checked 8 Oct 2026

Contract types

The project says it supports contracts for HTTP clients, HTTP servers, function callers, and function implementations.checked 8 Oct 2026

Contract workflow

It defines contracts against a mock provider, then verifies those contracts against the real provider.checked 8 Oct 2026

Deploy checks

The CLI can check whether a service is safe to deploy based on verification results and the target environment.checked 8 Oct 2026

Downloads

The official site links to npm and Maven Central as download locations.checked 8 Oct 2026

Example-based interactions

A contract consists of interactions defined by example, and each interaction runs independently during contract definition.checked 8 Oct 2026

Extensibility

Plugins can add matcher types, mock types, and DSL declarations; plugins are written in JavaScript or TypeScript compiled to JavaScript.checked 8 Oct 2026

Notable limitation

ContractCase does not currently support merging contracts, so each contract must be defined in one test file.checked 8 Oct 2026

Package availability

The project links to npm and Maven Central for downloads.checked 8 Oct 2026

Plugin language

Plugins must be written in JavaScript or TypeScript compiled to JavaScript.checked 8 Oct 2026

Purpose

ContractCase is a consumer-driven contract testing framework intended to help teams check whether services can communicate and deploy with confidence.checked 8 Oct 2026

Release status

The project states that versions before 1.0.0 are beta and that breaking changes may occur in minor releases.checked 8 Oct 2026

Stability

ContractCase is in beta before version 1.0.0, and its API may have breaking changes in minor version bumps.checked 8 Oct 2026

Support channel

The project directs users to report bugs through GitHub.checked 8 Oct 2026

Supported contract types

The project README lists HTTP clients, HTTP servers, function callers, and function implementations.checked 8 Oct 2026

Support route

The official site links users to GitHub to report a bug.checked 8 Oct 2026

Test framework support

The project README lists compatibility with Jest and Vitest for JavaScript or TypeScript and JUnit for Java.checked 8 Oct 2026

Test runners

The project README lists Jest and Vitest for JavaScript or TypeScript, and JUnit for Java, as compatible test frameworks.checked 8 Oct 2026