java-tutorials/spring-rest/src/test/java/com/baeldung/resttemplate/RestTemplateLiveTest.java

package com.baeldung.resttemplate;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.client.RestTemplate;

import com.baeldung.sampleapp.config.RestClientConfig;
import com.baeldung.transfer.LoginForm;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = RestClientConfig.class)
public class RestTemplateLiveTest {

    @Autowired
    RestTemplate restTemplate;

    @Test
    public void givenRestTemplate_whenRequested_thenLogAndModifyResponse() {
        LoginForm loginForm = new LoginForm("userName", "password");
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<LoginForm> requestEntity = new HttpEntity<LoginForm>(loginForm, headers);

        ResponseEntity<String> responseEntity = restTemplate.postForEntity("http://httpbin.org/post", requestEntity, String.class);

        assertThat(responseEntity.getStatusCode(), is(equalTo(HttpStatus.OK)));
        assertThat(responseEntity.getHeaders()
            .get("Foo")
            .get(0), is(equalTo("bar")));
    }
}