Contract testing with Spring Cloud Contract

Steps in provider

• Create provider
• Create contract (Success case for Get user by id = 1)

package contracts

import org.springframework.cloud.contract.spec.Contract

Contract.make {
    description "should return user by id=1"

    request {
        url "/users/1"
        method GET()
    }

    response {
        status OK()
        headers {
            contentType applicationJson()
        }
        body (
                id: 1,
                firstname: "Test firstname",
                lastname: "Test lastname"
        )
    }

}

• Run provider testing with contract

pom.xml

<plugin>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-contract-maven-plugin</artifactId>
    <version>3.1.4</version>
    <extensions>true</extensions>
    <configuration>
        <testFramework>JUNIT5</testFramework>
        <baseClassForTests>com.example.provider.BaseClass</baseClassForTests>
    </configuration>
</plugin>

Generate the stubs ann run test the provider

$mvnw clean install

Steps in consumer

• Create consumer
• Create consumer contract test
• Run test