Unit Testing Outbound API Clients with MockRestServiceServer

@RestClientTest(GithubClient.class)
class GithubClientTest {
    @Autowired
    private GithubClient githubClient;
 
    @Autowired
    private MockRestServiceServer server;
 
    @Test
    void fetchesUserRepositories() {
        this.server.expect(requestTo("/users/octocat/repos"))
            .andRespond(withSuccess("[{\"name\":\"repo1\"}]", MediaType.APPLICATION_JSON));
 
        List<RepositoryDto> repos = githubClient.getRepositories("octocat");
 
        assertThat(repos).hasSize(1);
    }
}