1 files changed, 47 insertions, 0 deletions
diff --git a/jstests/core/count_plan_summary.js b/jstests/core/count_plan_summary.js
new file mode 100644
index 00000000000..2bf96e5e437
--- /dev/null
+++ b/jstests/core/count_plan_summary.js
@@ -0,0 +1,47 @@
+// Test that the plan summary string appears in db.currentOp() for
+// count operations. SERVER-14064.
+
+var t = db.jstests_count_plan_summary;
+t.drop();
+
+for (var i = 0; i < 1000; i++) {
+    t.insert({x: 1});
+}
+
+// Mock a long-running count operation by sleeping for each of
+// the documents in the collection.
+s = startParallelShell(
+    "db.jstests_count_plan_summary.find({x: 1, $where: 'sleep(100)'}).count()"
+);
+
+// Find the count op in db.currentOp() and check for the plan summary.
+assert.soon(function() {
+    var current = db.currentOp({ns: t.getFullName(), "query.count": t.getName()});
+
+    assert("inprog" in current);
+    if (current.inprog.length === 0) {
+        print("Did not find count op. db.currentOp() output:");
+        printjson(current);
+        return false;
+    }
+
+    // There are no indices, so the plan summary should be a collscan.
+    var countOp = current.inprog[0];
+    if (!("planSummary" in countOp)) {
+        print("count op does not yet contain planSummary:");
+        printjson(countOp);
+        return false;
+    }
+
+    // There are no indices, so the planSummary should be "COLLSCAN".
+    print("Found count op with planSummary:");
+    printjson(countOp);
+    assert.eq("COLLSCAN", countOp.planSummary, "wrong planSummary string");
+
+    // Kill the op so that the test won't run for a long time.
+    db.killOp(countOp.opid);
+
+    return true;
+});
+
+s();