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DemoApplicationTests.java
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DemoApplicationTests.java
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package com.example.demo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.web.client.HttpClientErrorException.NotFound;
import org.springframework.web.client.HttpStatusCodeException;
import org.springframework.web.client.RestTemplate;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.fail;
import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
@RunWith(SpringRunner.class)
@AutoConfigureMockMvc
@SpringBootTest(webEnvironment = RANDOM_PORT)
public class DemoApplicationTests {
@Autowired
private MockMvc mvc;
@LocalServerPort
private int port;
private RestTemplate restTemplate = new RestTemplate();
@Test
public void shouldGet404StatusCode() throws Exception {
mvc.perform(get("/example"))
.andExpect(MockMvcResultMatchers.status().isNotFound());
}
@Test
public void shouldGet404StatusMessage() {
String uri = "http://localhost:" + port + "/example";
HttpStatusCodeException e = getHttpError(uri);
// actual:
assertThat(e).isInstanceOf(NotFound.class).hasMessage("404 null");
// expected:
// assertThat(e).isInstanceOf(NotFound.class).hasMessage("404 Not Found");
}
private HttpStatusCodeException getHttpError(String uri) {
try {
restTemplate.getForObject(uri, Object.class);
fail("Should fail");
} catch (HttpStatusCodeException e) {
return e;
}
return null;
}
}