It was my first experience with using Supertest - what a great tool it is! I was using Chai ( Chai-graphql) assertion library and Jest as a test runner. Testing with Supertest, Chai-Graphql, Jest If not custom error codes are configured in GraphQL server the unsuccessful query will return 200 status code anyway so it’s advisable to avoid adding this standard test case and focus on response body.Īnd the best GraphQL Postman collection runner can be run in seconds same as REST endpoint collection, works with Newman so also easy executed in Docker. Set the request mode to POST and the URL to. To get started, create a new HTTP request in Postman. Same as in Playground CTRL + Space shortcut is available. Using Postman with GraphQL APIs Back to business: fortunately, Postman has built-in full support for GraphQL Lets take a quick tour of the capabilities by exploring the Rick and Morty API. Postman same as Playground allows using variables and the same as in testing REST endpoint authorisation, HTTP headers can be added. All requests (query, mutation) use POST method, all to the same endpoint the body of message uses GraphQL schema. If you are familiar with Postman and testing REST endpoints there will be just few adjustments to write test cases for GraphQL endpoint. Of course that Postman has a feature allowing testing GraphQL! Playground IDE is available on local development on localhost:4000/graphql or can be also enabled in production by passing “playground: true “ to server instance as on a GraphQl server I was working on. One of my favourite Playground features is keyboard shortcut CTRL + Space allowing access all available commands based on your current context. Playground allows also testing with variables (convenient way for developers to build query this way and then just copy it to code base), HTTP headers etc. Allows work on multiple tabs so working on different test cases. Intelligent features of Playground allow quickly identify issue with query (syntax, real-time error highlighting), accessing endpoint documentation and schema. It is interface allowing user to test queries, mutations and subscriptions. The easiest and provided by default from GraphQL endpoint (using Apollo Server) testing tool is GraphQL IDE - Playground. deleteTea etc) that are ready to be tested. The endpoint that I am using is the collection of teas has few basic methods available ( teas, teaByid, producers, addTea. Recently I started my personal project to learn how to build and test GraphQL server. GraphQL, Postman, Supertest, API testing - 2 min read And if there are any pre-conditions to your test, those can be scripted in the Pre-Request section of Postman. We can write queries and mutations, and use dynamically accepted values using variables. We can import the schema and use GraphQL introspection feature to enable autocomplete. Testing GraphQL (Playground, Postman, Supertest/Chai) We can easily test GraphQL using Postman.
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