Testcontainers

Testcontainers is a NodeJS library that supports tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Install

npm i -D testcontainers

Usage

Run your app with the DEBUG=testcontainers environment variable set to see debug output.

The following environment variables are supported:

Key	Example value	Behaviour
DOCKER_HOST	tcp://docker:2375	Override the Docker host, useful for DIND in CI environments

Example

const redis = require("async-redis");
const { GenericContainer } = require("testcontainers");

(async () => {
  const container = await new GenericContainer("redis")
    .withEnv("KEY", "VALUE")
    .withExposedPorts(6379)
    .start();

  const redisClient = redis.createClient(
      container.getMappedPort(6379),
      container.getContainerIpAddress(),
  );
  await redisClient.quit();

  await container.stop();
})();