Fix pull not doing anything when refs are already up-to-date

Signed-off-by: Gabriel Roldan <[email protected]>

Author: Gabriel Roldan

src/remoting/src/main/java/org/locationtech/geogig/remotes/PullOp.java

@@ -13,7 +13,6 @@
 import static com.google.common.base.Preconditions.checkNotNull;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 
 import org.eclipse.jdt.annotation.Nullable;
@@ -234,16 +233,6 @@ protected PullResult _call() {
         result.setOldRef(currentBranch);
         result.setRemote(suppliedRemote);
 
-        // did fetch need to update any contents?
-        {
-            final Collection<RefDiff> fetchedRefs = fetchResult.getRefDiffs()
-                    .get(remote.getFetchURL());
-            if (fetchedRefs == null || fetchedRefs.isEmpty()) {
-                result.setNewRef(currentBranch);
-                return result;
-            }
-        }
-
         for (LocalRemoteRefSpec fetchspec : remote.getFetchSpecs()) {
             final String localRemoteRefName = fetchspec.getLocal();
             final Optional<Ref> localRemoteRefOpt = command(RefParse.class)

src/remoting/src/test/java/org/locationtech/geogig/test/integration/remoting/PullOpTest.java

@@ -166,6 +166,25 @@ public void testPullMerge() throws Exception {
         assertEquals(expectedMaster, logged);
     }
 
+    @Test
+    public void testPullMergeNothingToFetch() throws Exception {
+        // Add a commit to the remote
+        insertAndAdd(remoteGeogig.geogig, lines3);
+        RevCommit commit = commit(remoteGeogig.repo, "lines3");
+        expectedMaster.addFirst(commit);
+
+        // call fetch first so the missing objects are already in the local repo
+        fetchOp().call();
+
+        // Then Pull should update the target ref even if there's nothing to fetch
+        PullOp pull = pullOp();
+        pull.setRemote("origin").call();
+
+        List<RevCommit> logged = log(localGeogig.repo);
+
+        assertEquals(expectedMaster, logged);
+    }
+
     /**
      * Pull from a remote that's not being saved as named remote in the repository
      */