Test for expected comment in cherry pick acceptance tests

Change-Id: I9647222956efa38afcabb7d157b2e634d02c92a0

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/revision/RevisionIT.java

diff --git a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/revision/RevisionIT.java b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/revision/RevisionIT.java
index ff2944f..4a9a25c 100644
--- a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/revision/RevisionIT.java
+++ b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/revision/RevisionIT.java
@@ -36,6 +36,7 @@
 import com.google.gerrit.extensions.api.projects.BranchInput;
 import com.google.gerrit.extensions.client.SubmitType;
 import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.ChangeMessageInfo;
 import com.google.gerrit.extensions.common.CommentInfo;
 import com.google.gerrit.extensions.common.DiffInfo;
 import com.google.gerrit.extensions.common.MergeableInfo;
@@ -55,6 +56,7 @@
 import java.nio.charset.StandardCharsets;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
@@ -157,6 +159,16 @@
         .cherryPick(in);
     assertThat((Iterable<?>)orig.get().messages).hasSize(2);
 
+    String cherryPickedRevision = cherry.get().currentRevision;
+    String expectedMessage = String.format(
+        "Patch Set 1: Cherry Picked\n\n" +
+        "This patchset was cherry picked to branch %s as commit %s",
+        in.destination, cherryPickedRevision);
+
+    Iterator<ChangeMessageInfo> origIt = orig.get().messages.iterator();
+    origIt.next();
+    assertThat(origIt.next().message).isEqualTo(expectedMessage);
+
     assertThat(cherry.get().subject).contains(in.message);
     assertThat(cherry.get().topic).isEqualTo("someTopic");
     cherry.current().review(ReviewInput.approve());