package de.juplo.httpresources;
   
   import org.junit.jupiter.api.BeforeEach;
   import org.junit.jupiter.api.DisplayName;
   import org.junit.jupiter.api.Test;
   import org.junit.jupiter.api.extension.ExtendWith;
   import org.mockito.Mock;
   import org.mockito.junit.jupiter.MockitoExtension;
   import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.cache.support.NoOpCache;
  import org.springframework.http.HttpHeaders;
  import org.springframework.test.context.junit.jupiter.SpringExtension;
  
  import java.net.URI;
  import java.time.Clock;
  import java.time.ZoneId;
  
  import static de.juplo.httpresources.TestUtil.*;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.*;
  
  
  @DisplayName(("HttpResource - Fetched - Not Expired - Fetch: Modified"))
  @ExtendWith({ SpringExtension.class, MockitoExtension.class })
  @MockitoSettings(strictness = Strictness.LENIENT)
  public class HttpResourceNotExpiredFetchModifiedTest
  {
    private final static Logger LOG = LoggerFactory.getLogger(HttpResourceNotExpiredFetchModifiedTest.class);
  
    @Mock
    HttpResourceFetcher fetcher;
  
    HttpResources resources;
    URI uri;
    HttpResource resource;
  
  
    /************** SETUP */
  
    @BeforeEach
    public void setUp()
    {
      Clock clock = Clock.fixed(NOW.toInstant(), ZoneId.of("GMT"));
      resources = new HttpResources(fetcher, clock);
      uri = URI.create("http://foo/bar");
      resource = new HttpResource(resources, fetcher, clock, uri);
      resource.data = DATA_NOT_EXPIRED;
  
      // Everything is possible, nothing is necessary: Only defines behavior!
  
      HttpHeaders headers = new HttpHeaders();
      headers.setContentType(MIME_TYPE_CONTENT_TYPE_HTML);
  
      when(fetcher.fetch(any(), any())).thenReturn(DATA_UPDATED);
    }
  
  
    /*************** For calls, that do not trigger a fetch see: HttpResourceNotExpiredTest */
  
  
    /*************** Calls, that trigger a fetch */
  
    @Test
    @DisplayName(("call to fetch() triggers fetch"))
    public void test_fetch_TriggersFetch()
    {
      LOG.info("<-- start of test-case");
  
      resource.fetch();
  
      // Do not verify implementation: Only verify necessary outcome!
      verify(fetcher).fetch(eq(uri), any());
    }
  
  
    /*************** Results for calls, that does trigger a fetch */
  
    @Test
    @DisplayName(("fetch() returns true, if fetcher returned true"))
    public void test_fetch_ReturnsTrueIfFetcherReturnedFalse()
    {
      LOG.info("<-- start of test-case");
  
      assertThat(resource.fetch()).isTrue();
    }
  
  
    /*************** Expected state after calls that trigger a fetch */
  
    @Test
    @DisplayName(("fetch() updates data"))
    public void test_fetch_UpdatesData()
    {
      LOG.info("<-- start of test-case");
 
     resource.fetch();
 
     assertThat(resource.data).isSameAs(DATA_UPDATED);
   }
 }