1 files changed, 54 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_optimized_out_vars.js b/devtools/client/webconsole/test/browser/browser_webconsole_optimized_out_vars.js
new file mode 100644
index 0000000000..bfc7d09143
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_optimized_out_vars.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Check that inspecting an optimized out variable works when execution is
+// paused.
+
+"use strict";
+
+const TEST_URI =
+  "http://example.com/browser/devtools/client/webconsole/" +
+  "test/browser/" +
+  "test-closure-optimized-out.html";
+
+add_task(async function () {
+  const breakpointLine = 18;
+  const hud = await openNewTabAndConsole(TEST_URI);
+  await openDebugger();
+
+  const toolbox = hud.toolbox;
+  const dbg = createDebuggerContext(toolbox);
+
+  await selectSource(dbg, "test-closure-optimized-out.html");
+  await addBreakpoint(dbg, "test-closure-optimized-out.html", breakpointLine);
+
+  // Cause the debuggee to pause
+  await pauseDebugger(dbg);
+
+  await toolbox.selectTool("webconsole");
+
+  // This is the meat of the test: evaluate the optimized out variable.
+  info("Waiting for optimized out message");
+  await executeAndWaitForResultMessage(hud, "upvar", "optimized out");
+  ok(true, "Optimized out message logged");
+
+  info("Open the debugger");
+  await openDebugger();
+
+  info("Resume");
+  await resume(dbg);
+
+  info("Remove the breakpoint");
+  const source = findSource(dbg, "test-closure-optimized-out.html");
+  await removeBreakpoint(dbg, source.id, breakpointLine);
+});
+
+async function pauseDebugger(dbg) {
+  info("Waiting for debugger to pause");
+  const onPaused = waitForPaused(dbg);
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
+    const button = content.document.querySelector("button");
+    button.click();
+  });
+  await onPaused;
+}