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stripe-mock is a mock HTTP server that responds like the real Stripe API. It can be used instead of Stripe's test mode to make test suites integrating with Stripe faster and less brittle. It's powered by the Stripe OpenAPI specification, which is generated from within Stripe's API.

Current state of development

stripe-mock is able to generate an approximately correct API response for any endpoint, but the logic for doing so is still quite naive. It supports the following features:

  • It has a catalog of every API URL and their signatures. It responds on URLs that exist with a resource that it returns and 404s on URLs that don't exist.
  • JSON Schema is used to check the validity of the parameters of incoming requests. Validation is comprehensive, but far from exhaustive, so don't expect the full barrage of checks of the live API.
  • Responses are generated based off resource fixtures. They're also generated from within Stripe's API, and similar to the sample data available in Stripe's API reference.
  • It reflects the values of valid input parameters into responses where the naming and type are the same. So if a charge is created with amount=123, a charge will be returned with "amount": 123.
  • It will respond over HTTP or over HTTPS. HTTP/2 over HTTPS is available if the client supports it.

Limitations:

  • It's currently stateless. Data created with POST calls won't be stored so that the same information is available later.
  • For polymorphic endpoints (say one that returns either a card or a bank account), only a single resource type is ever returned. There's no way to specify which one that is.
  • It's locked to the latest version of Stripe's API and doesn't support old versions.
  • Testing for specific responses and errors is currently not supported. It will return a success response instead of the desired error response.

Future plans

The next important feature that we're aiming to provide is statefulness. The idea would be that resources created during a session would be stored for that session's duration and could be subsequently retrieved, updated, and deleted. This would allow more comprehensive integration tests to run successfully against stripe-mock.

We'll continue to aim to improve the quality of stripe-mock's responses, but it will never be on perfect parity with the live API. We think the ideal test suite for an integration would involve running most of the suite against stripe-mock, and then to have a few smoke tests run critical flows against the more accurate (but also slower) Stripe API in test mode.

Usage

If you have Go installed, you can install the basic binary with:

go get -u github.com/stripe/stripe-mock

With no arguments, stripe-mock will listen with HTTP on its default port of 12111 and HTTPS on 12112:

stripe-mock

Ports can be specified explicitly with:

stripe-mock -http-port 12111 -https-port 12112

(Leave either -http-port or -https-port out to activate stripe-mock on only one protocol.)

Have stripe-mock select a port automatically by passing 0:

stripe-mock -http-port 0

It can also listen via Unix socket:

stripe-mock -http-unix /tmp/stripe-mock.sock -https-unix /tmp/stripe-mock-secure.sock

Homebrew

Get it from Homebrew or download it from the releases page:

brew install stripe/stripe-mock/stripe-mock

# start a stripe-mock service at login
brew services start stripe-mock

# upgrade if you already have it
brew upgrade stripe-mock

# restart the service after upgrading
brew services restart stripe-mock

The Homebrew service listens on port 12111 for HTTP and 12112 for HTTPS and HTTP/2.

Docker

docker run --rm -it -p 12111-12112:12111-12112 stripe/stripe-mock:latest

The default Docker ENTRYPOINT listens on port 12111 for HTTP and 12112 for HTTPS and HTTP/2.

Sample request

After you've started stripe-mock, you can try a sample request against it:

curl -i http://localhost:12111/v1/charges -H "Authorization: Bearer sk_test_123"

Development

Testing

Run the test suite:

go test ./...

Updating OpenAPI

Update the OpenAPI spec by running make update-openapi-spec in the root of the repo.

make update-openapi-spec

Dependencies

Dependencies are managed using go modules and require Go 1.11+ with GO111MODULE=on.

Release

Releases are automatically published by Travis CI using goreleaser when a new tag is pushed:

git pull origin --tags
git tag v0.1.1
git push origin --tags
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