Reliable, scriptable and extensible mock server for general REST APIs, OpenAPI (aka Swagger) specifications, Salesforce and HBase APIs.

Scripting support for both JavaScript or Groovy/Java.

Use Imposter to:

• run standalone mocks in place of real systems
• turn a Swagger file into a mock API for testing or QA
• quickly set up a temporary API for your mobile/web client teams whilst the real API is being built
• decouple your integration tests from the cloud/various back-end systems and take control of your dependencies

Provide mock responses using static files or customise behaviour using JavaScript or Java/Groovy. Power users can write their own plugins in a JVM language of their choice.

The quickest way to get up and running is to use our free cloud-hosted version at https://www.remotebot.io/mocks

Read the documentation here.

Imposter uses plugins to control its behaviour and provide specialised mocks:

• REST - Mocks RESTful or plain HTTP APIs.
• OpenAPI (aka Swagger) - Support for OpenAPI (aka Swagger) API specifications.
• HBase - Basic HBase mock implementation.
• SFDC (Salesforce) plugin - Basic Salesforce mock implementation.

You can also create your own plugins, using a JVM language of your choice.

Let's assume your configuration is in a folder named config.

Docker example:

docker run -ti -p 8443:8443 \
    -v $(pwd)/config:/opt/imposter/config \
    outofcoffee/imposter-rest

Standalone Java example:

java -jar distro/build/libs/imposter.jar \
    --plugin com.gatehill.imposter.plugin.rest.RestPluginImpl \
    --configDir ./config

Your mock server is now running!

This example starts a mock server using the simple REST plugin, serving responses based on the configuration files inside the config folder. You can hit the URL http://localhost:8443/example to see the mock response.

For recent changes see the Changelog, or view the Roadmap.

• Pull requests are welcome.
• PRs should target the develop branch.

Pete Cornish ([email protected])