1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg_optimized-out-vars.js b/devtools/client/debugger/test/mochitest/browser_dbg_optimized-out-vars.js
new file mode 100644
index 000000000..ba60a0068
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg_optimized-out-vars.js
@@ -0,0 +1,50 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that optimized out variables aren't present in the variables view.
+
+function test() {
+  Task.spawn(function* () {
+    const TAB_URL = EXAMPLE_URL + "doc_closure-optimized-out.html";
+    let gDebugger, sources;
+
+    let options = {
+      source: TAB_URL,
+      line: 1
+    };
+    let [tab,, panel] = yield initDebugger(TAB_URL, options);
+    gDebugger = panel.panelWin;
+    sources = gDebugger.DebuggerView.Sources;
+
+    yield panel.addBreakpoint({ actor: sources.values[0],
+                                line: 18 });
+    yield ensureThreadClientState(panel, "resumed");
+
+    // Spin the event loop before causing the debuggee to pause, to allow
+    // this function to return first.
+    generateMouseClickInTab(tab, "content.document.querySelector('button')");
+
+    yield waitForDebuggerEvents(panel, gDebugger.EVENTS.FETCHED_SCOPES);
+    let gVars = gDebugger.DebuggerView.Variables;
+    let outerScope = gVars.getScopeAtIndex(1);
+    outerScope.expand();
+
+    let upvarVar = outerScope.get("upvar");
+    ok(upvarVar, "The variable `upvar` is shown.");
+    is(upvarVar.target.querySelector(".value").getAttribute("value"),
+       gDebugger.L10N.getStr("variablesViewOptimizedOut"),
+       "Should show the optimized out message for upvar.");
+
+    let argVar = outerScope.get("arg");
+    is(argVar.target.querySelector(".name").getAttribute("value"), "arg",
+      "Should have the right property name for |arg|.");
+    is(argVar.target.querySelector(".value").getAttribute("value"), 42,
+      "Should have the right property value for |arg|.");
+
+    yield resumeDebuggerThenCloseAndFinish(panel);
+  }).then(null, aError => {
+    ok(false, "Got an error: " + aError.message + "\n" + aError.stack);
+  });
+}