Test cherry-pick to a non-existing branch

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I050c60945f9f1e9fff19ff283c34a36ca3df2367

javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java

diff --git a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
index ca444c4..b9821d4 100644
--- a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
@@ -87,6 +87,7 @@
 import com.google.gerrit.reviewdb.client.Branch;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSetApproval;
+import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.change.RevisionResource;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gerrit.server.restapi.change.GetRevisionActions;
@@ -909,6 +910,24 @@
   }
 
   @Test
+  public void cherryPickToNonExistingBranch() throws Exception {
+    PushOneCommit.Result result = createChange();
+
+    CherryPickInput input = new CherryPickInput();
+    input.message = "foo bar";
+    input.destination = "non-existing";
+    // TODO(ekempin): This should rather result in an UnprocessableEntityException.
+    BadRequestException thrown =
+        assertThrows(
+            BadRequestException.class,
+            () -> gApi.changes().id(result.getChangeId()).current().cherryPick(input));
+    assertThat(thrown)
+        .hasMessageThat()
+        .isEqualTo(
+            String.format("Branch %s does not exist.", RefNames.REFS_HEADS + input.destination));
+  }
+
+  @Test
   public void cherryPickToNonExistingBaseCommit() throws Exception {
     createBranch(new Branch.NameKey(project, "foo"));
     PushOneCommit.Result result = createChange();