juplo.de Git - demos/testing/blob - src/test/java/de/juplo/demo/HtmlControllerTest.java

   1 package de.juplo.demo;
   2
   3
   4 import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
   5 import org.junit.jupiter.api.BeforeEach;
   6 import org.junit.jupiter.api.DisplayName;
   7 import org.junit.jupiter.api.Test;
   8 import org.junit.jupiter.api.extension.ExtendWith;
   9 import org.junit.jupiter.params.ParameterizedTest;
  10 import org.junit.jupiter.params.provider.ValueSource;
  11 import org.mockito.ArgumentCaptor;
  12 import static org.mockito.ArgumentMatchers.eq;
  13 import static org.mockito.Mockito.verify;
  14 import static org.mockito.Mockito.when;
  15 import org.springframework.boot.test.mock.mockito.MockBean;
  16 import org.springframework.test.context.junit.jupiter.SpringExtension;
  17 import org.springframework.ui.Model;
  18 import org.springframework.web.reactive.function.client.WebClientResponseException;
  19 import reactor.core.publisher.Mono;
  20 import reactor.test.StepVerifier;
  21
  22
  23 /**
  24  * Unit-Test for class {@link RemoteContentHtmlController}.
  25  * @author Kai Moritz
  26  */
  27 @ExtendWith(SpringExtension.class)
  28 public class HtmlControllerTest
  29 {
  30   HtmlController controller;
  31
  32   @MockBean
  33   RemoteContentService service;
  34   @MockBean
  35   Model model;
  36
  37
  38   @BeforeEach
  39   void setUp()
  40   {
  41     controller = new HtmlController(service);
  42   }
  43
  44
  45   @Test
  46   @DisplayName("Data successfully fetched from remote-server")
  47   void testOK()
  48   {
  49     when(service.getRemoteText("foo")).thenReturn(Mono.just("bar"));
  50
  51     String result = controller.fetch(model, "foo");
  52
  53     assertThat(result).isEqualTo("home");
  54     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
  55     verify(model).addAttribute(eq("text"), captor.capture());
  56     StepVerifier
  57         .create(captor.getValue())
  58         .expectNext("bar")
  59         .expectComplete()
  60         .verify();
  61   }
  62
  63   @Test
  64   @DisplayName("Data not found on remote-server")
  65   void testNotFoud()
  66   {
  67     Mono<String> mono = Mono.error(WebClientResponseException.create(404, "", null, null, null));
  68     when(service.getRemoteText("foo")).thenReturn(mono);
  69
  70     String result = controller.fetch(model, "foo");
  71
  72     assertThat(result).isEqualTo("home");
  73     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
  74     verify(model).addAttribute(eq("text"), captor.capture());
  75     StepVerifier
  76         .create(captor.getValue())
  77         .expectNext("404 ")
  78         .expectComplete()
  79         .verify();
  80   }
  81
  82   /**
  83    * Only the behavior on the common errors, as defined in {@link
  84    * WebClientResponseException#create(int, String, org.springframework.http.HttpHeaders, byte[], java.nio.charset.Charset, org.springframework.http.HttpRequest)
  85    * WebClientResponseException.create()} is tested.
  86    */
  87   @DisplayName("Other error while fetching data from remote-server")
  88   @ParameterizedTest(name = "{arguments} ==> HTTP-status={0}")
  89   @ValueSource(ints = { 400, 401, 403, 405, 406, 409, 410, 415, 422, 429, 500, 501, 502, 503, 504 })
  90   void testOtherError(int status)
  91   {
  92     Mono<String> mono = Mono.error(WebClientResponseException.create(status, "", null, null, null));
  93     when(service.getRemoteText("foo")).thenReturn(mono);
  94
  95     String result = controller.fetch(model, "foo");
  96
  97     assertThat(result).isEqualTo("home");
  98     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
  99     verify(model).addAttribute(eq("text"), captor.capture());
 100     StepVerifier
 101         .create(captor.getValue())
 102         .expectNextMatches(message -> message.startsWith(Integer.toString(status)))
 103         .expectComplete()
 104         .verify();
 105   }
 106 }