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.EnumSource;
  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.http.HttpStatus;
  17 import org.springframework.test.context.junit.jupiter.SpringExtension;
  18 import org.springframework.ui.Model;
  19 import org.springframework.web.reactive.function.client.WebClientResponseException;
  20 import reactor.core.publisher.Mono;
  21 import reactor.test.StepVerifier;
  22
  23
  24 /**
  25  * Unit-Test for class {@link RemoteContentHtmlController}.
  26  * @author Kai Moritz
  27  */
  28 @ExtendWith(SpringExtension.class)
  29 public class HtmlControllerTest
  30 {
  31   HtmlController controller;
  32
  33   @MockBean
  34   RemoteContentService service;
  35   @MockBean
  36   Model model;
  37
  38
  39   @BeforeEach
  40   void setUp()
  41   {
  42     controller = new HtmlController(service);
  43   }
  44
  45
  46   @Test
  47   @DisplayName("Data successfully fetched from remote-server")
  48   void testOK()
  49   {
  50     when(service.getRemoteText("foo")).thenReturn(Mono.just("bar"));
  51
  52     String result = controller.fetch(model, "foo");
  53
  54     assertThat(result).isEqualTo("home");
  55     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
  56     verify(model).addAttribute(eq("text"), captor.capture());
  57     StepVerifier
  58         .create(captor.getValue())
  59         .expectNext("bar")
  60         .expectComplete()
  61         .verify();
  62   }
  63
  64   @Test
  65   @DisplayName("Data not found on remote-server")
  66   void testNotFoud()
  67   {
  68     Mono<String> mono = Mono.error(WebClientResponseException.create(404, "", null, null, null));
  69     when(service.getRemoteText("foo")).thenReturn(mono);
  70
  71     String result = controller.fetch(model, "foo");
  72
  73     assertThat(result).isEqualTo("home");
  74     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
  75     verify(model).addAttribute(eq("text"), captor.capture());
  76     StepVerifier
  77         .create(captor.getValue())
  78         .expectNext("404 ")
  79         .expectComplete()
  80         .verify();
  81   }
  82
  83   /**
  84    * Only the behavior on the common errors, as defined in {@link
  85    * WebClientResponseException#create(int, String, org.springframework.http.HttpHeaders, byte[], java.nio.charset.Charset, org.springframework.http.HttpRequest)
  86    * WebClientResponseException.create()} is tested.
  87    */
  88   @DisplayName("Other error while fetching data from remote-server")
  89   @ParameterizedTest(name = "{arguments} ==> HTTP-status={0}")
  90   @EnumSource(value = HttpStatus.class, names = {
  91     "BAD_REQUEST",
  92     "UNAUTHORIZED",
  93     "FORBIDDEN",
  94     "METHOD_NOT_ALLOWED",
  95     "NOT_ACCEPTABLE",
  96     "CONFLICT",
  97     "GONE",
  98     "UNSUPPORTED_MEDIA_TYPE",
  99     "TOO_MANY_REQUESTS",
 100     "UNPROCESSABLE_ENTITY",
 101     "INTERNAL_SERVER_ERROR",
 102     "NOT_IMPLEMENTED",
 103     "BAD_GATEWAY",
 104     "SERVICE_UNAVAILABLE",
 105     "GATEWAY_TIMEOUT"
 106   })
 107   void testOtherError(HttpStatus status)
 108   {
 109     Mono<String> mono = Mono.error(WebClientResponseException.create(status.value(), "", null, null, null));
 110     when(service.getRemoteText("foo")).thenReturn(mono);
 111
 112     String result = controller.fetch(model, "foo");
 113
 114     assertThat(result).isEqualTo("home");
 115     ArgumentCaptor<Mono<String>> captor = ArgumentCaptor.forClass(Mono.class);
 116     verify(model).addAttribute(eq("text"), captor.capture());
 117     StepVerifier
 118         .create(captor.getValue())
 119         .expectNextMatches(message -> message.startsWith(Integer.toString(status.value())))
 120         .expectComplete()
 121         .verify();
 122   }
 123 }