1 files changed, 34 insertions, 0 deletions
diff --git a/jstests/core/indexi.js b/jstests/core/indexi.js
new file mode 100644
index 00000000000..bfd9d13e15c
--- /dev/null
+++ b/jstests/core/indexi.js
@@ -0,0 +1,34 @@
+// Test that client cannot access index namespaces SERVER-4276.
+
+t = db.jstests_indexi;
+t.drop();
+
+idx = db.jstests_indexi.$_id_;
+
+var expectWriteError = function(func) {
+    if (db.getMongo().writeMode() == 'commands') {
+        assert.throws(func);
+    }
+    else {
+        assert.writeError(func());
+    }
+};
+
+// Test that accessing the index namespace fails.
+function checkFailingOperations() {
+    assert.throws(function() { idx.find().itcount(); });
+    expectWriteError(function() { return idx.insert({ x: 1 }); });
+    expectWriteError(function() { return idx.update({ x: 1 }, { x: 2 }); });
+    expectWriteError(function() { return idx.remove({ x: 1 }); });
+    assert.commandFailed( idx.runCommand( 'compact' ) );
+    assert.writeError(idx.ensureIndex({ x: 1 }));
+}
+
+// Check with base collection not present.
+// TODO: SERVER-4276
+//checkFailingOperations();
+t.save({});
+
+// Check with base collection present.
+checkFailingOperations();
+