Using Spring Boot @SpyBean

Today, a colleague asked me to help him write a REST API integration test. We use Spring’s MockMvc API to test the REST API. The application uses MongoDB with Spring Data MongoDB. The application uses both MongoTemplate and Mongo based repositories for working with MongoDB. To make tests work independent of MongoDB, we mock Spring MongoDB repository interfaces.

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Unit Testing File Upload REST API using Spring MVC MockMvc

Today a colleague asked me how he could unit test a Spring MVC REST resource. I am using Spring MVC test support for some time now so the obvious answer was to use MockMvc. In case you have not used MockMvc, it allows you to declaratively write tests for your Spring MVC controllers. Rather than calling controllers directly, you use the MockMvc fluent API to make a request to a URL and verify the response returned by the API. You can read Spring MVC documentation to learn about MockMvc in detail.

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