1 files changed, 35 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/debug-step-into-valueof.js b/deps/v8/test/mjsunit/debug-step-into-valueof.js
new file mode 100644
index 0000000000..b1d9cf1454
--- /dev/null
+++ b/deps/v8/test/mjsunit/debug-step-into-valueof.js
@@ -0,0 +1,35 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --expose-debug-as debug
+
+Debug = debug.Debug
+
+var exception = null;
+var break_count = 0;
+
+function listener(event, exec_state, event_data, data) {
+  if (event != Debug.DebugEvent.Break) return;
+  try {
+    print(event_data.sourceLineText());
+    assertTrue(event_data.sourceLineText().indexOf(`Break ${break_count++}.`) > 0);
+    exec_state.prepareStep(Debug.StepAction.StepIn);
+  } catch (e) {
+    exception = e;
+  }
+};
+
+function valueOfCallback() {
+  return 2;               // Break 2.
+}                         // Break 3.
+var o = {};
+o.valueOf = valueOfCallback;
+
+Debug.setListener(listener);
+debugger;                 // Break 0.
+var result = 1 + o;       // Break 1.
+Debug.setListener(null);  // Break 4.
+
+assertEquals(3, result);
+assertNull(exception);