implemented LinkEnricher registration via Enrich annotation

scm-webapp/src/test/java/sonia/scm/api/v2/resources/LinkEnricherAutoRegistrationTest.java

@@ -0,0 +1,64 @@
+package sonia.scm.api.v2.resources;
+
+import com.google.common.collect.ImmutableSet;
+import org.junit.jupiter.api.Test;
+
+import java.util.Set;
+
+import static org.assertj.core.api.Java6Assertions.assertThat;
+
+class LinkEnricherAutoRegistrationTest {
+
+  @Test
+  void shouldRegisterAllAvailableLinkEnrichers() {
+    LinkEnricher one = new One();
+    LinkEnricher two = new Two();
+    LinkEnricher three = new Three();
+    LinkEnricher four = new Four();
+    Set<LinkEnricher> enrichers = ImmutableSet.of(one, two, three, four);
+
+    LinkEnricherRegistry registry = new LinkEnricherRegistry();
+
+    LinkEnricherAutoRegistration autoRegistration = new LinkEnricherAutoRegistration(registry, enrichers);
+    autoRegistration.contextInitialized(null);
+
+    assertThat(registry.allByType(String.class)).containsOnly(one, two);
+    assertThat(registry.allByType(Integer.class)).containsOnly(three);
+  }
+
+  @Enrich(String.class)
+  public static class One implements LinkEnricher {
+
+    @Override
+    public void enrich(LinkEnricherContext context, LinkAppender appender) {
+
+    }
+  }
+
+  @Enrich(String.class)
+  public static class Two implements LinkEnricher {
+
+    @Override
+    public void enrich(LinkEnricherContext context, LinkAppender appender) {
+
+    }
+  }
+
+  @Enrich(Integer.class)
+  public static class Three implements LinkEnricher {
+
+    @Override
+    public void enrich(LinkEnricherContext context, LinkAppender appender) {
+
+    }
+  }
+
+  public static class Four implements LinkEnricher {
+
+    @Override
+    public void enrich(LinkEnricherContext context, LinkAppender appender) {
+
+    }
+  }
+
+}