Add Java API to exclude groups for reviewer suggestion

Use the new API to test exclusion of groups for reviewer suggestion.

Change-Id: I1b6456e09c5f1d8ae3dc7870976f8e3757088163
Signed-off-by: Edwin Kempin <ekempin@google.com>

java/com/google/gerrit/extensions/api/changes/ChangeApi.java

@@ -381,6 +381,7 @@ public interface ChangeApi {
   abstract class SuggestedReviewersRequest {
     private String query;
     private int limit;
+    private boolean excludeGroups;
 
     public abstract List<SuggestedReviewerInfo> get() throws RestApiException;
 
@@ -394,6 +395,11 @@ public interface ChangeApi {
       return this;
     }
 
+    public SuggestedReviewersRequest excludeGroups(boolean excludeGroups) {
+      this.excludeGroups = excludeGroups;
+      return this;
+    }
+
     public String getQuery() {
       return query;
     }
@@ -401,6 +407,10 @@ public interface ChangeApi {
     public int getLimit() {
       return limit;
     }
+
+    public boolean getExcludeGroups() {
+      return excludeGroups;
+    }
   }
 
   /**

java/com/google/gerrit/server/api/changes/ChangeApiImpl.java

@@ -448,6 +448,7 @@ class ChangeApiImpl implements ChangeApi {
     try {
       suggestReviewers.setQuery(r.getQuery());
       suggestReviewers.setLimit(r.getLimit());
+      suggestReviewers.setExcludeGroups(r.getExcludeGroups());
       return suggestReviewers.apply(change).value();
     } catch (Exception e) {
       throw asRestApiException("Cannot retrieve suggested reviewers", e);

java/com/google/gerrit/server/restapi/change/SuggestChangeReviewers.java

@@ -39,15 +39,20 @@ import org.kohsuke.args4j.Option;
 public class SuggestChangeReviewers extends SuggestReviewers
     implements RestReadView<ChangeResource> {
 
+  private final PermissionBackend permissionBackend;
+  private final Provider<CurrentUser> self;
+  private final ProjectCache projectCache;
+
+  private boolean excludeGroups;
+
   @Option(
       name = "--exclude-groups",
       aliases = {"-e"},
       usage = "exclude groups from query")
-  boolean excludeGroups;
-
-  private final PermissionBackend permissionBackend;
-  private final Provider<CurrentUser> self;
-  private final ProjectCache projectCache;
+  public SuggestChangeReviewers setExcludeGroups(boolean excludeGroups) {
+    this.excludeGroups = excludeGroups;
+    return this;
+  }
 
   @Inject
   SuggestChangeReviewers(

javatests/com/google/gerrit/acceptance/rest/change/SuggestReviewersIT.java

@@ -135,6 +135,27 @@ public class SuggestReviewersIT extends AbstractDaemonTest {
                 .collect(toList()));
   }
 
+  @Test
+  public void suggestReviewersWithExcludeGroups() throws Exception {
+    String changeId = createChange().getChangeId();
+
+    // by default groups are included
+    List<SuggestedReviewerInfo> reviewers = suggestReviewers(changeId, name("user"));
+    assertReviewers(
+        reviewers, ImmutableList.of(user1, user2, user3), ImmutableList.of(group1, group2, group3));
+
+    // exclude groups
+    reviewers =
+        gApi.changes().id(changeId).suggestReviewers(name("user")).excludeGroups(true).get();
+    assertReviewers(reviewers, ImmutableList.of(user1, user2, user3), ImmutableList.of());
+
+    // explicitly include groups
+    reviewers =
+        gApi.changes().id(changeId).suggestReviewers(name("user")).excludeGroups(false).get();
+    assertReviewers(
+        reviewers, ImmutableList.of(user1, user2, user3), ImmutableList.of(group1, group2, group3));
+  }
+
   @Test
   @GerritConfig(name = "accounts.visibility", value = "SAME_GROUP")
   public void suggestReviewersSameGroupVisibility() throws Exception {