1 files changed, 73 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-sourcemapped-toggle.js b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemapped-toggle.js
new file mode 100644
index 0000000000..02a91961b6
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemapped-toggle.js
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+"use strict";
+
+// Tests for preview through Babel's compile output.
+requestLongerTimeout(5);
+
+// Test pausing with mapScopes enabled and disabled
+add_task(async function () {
+  await pushPref("devtools.debugger.map-scopes-enabled", true);
+  const dbg = await initDebugger("doc-sourcemapped.html");
+
+  info("1. Pause on line 20");
+  const url = "webpack3-babel6://./esmodules-cjs/input.js";
+  await waitForSources(dbg, url);
+
+  const source = findSource(dbg, url);
+  await selectSource(dbg, source);
+  await addBreakpoint(dbg, source, 20, 3);
+
+  invokeInTab("webpack3Babel6EsmodulesCjs");
+  await waitForPaused(dbg);
+
+  Assert.notEqual(getOriginalScope(dbg), null, "Scopes are now mapped");
+
+  ok(!findFooterNotificationMessage(dbg), "No footer notification message");
+  await assertPreviewTextValue(dbg, 20, 20, {
+    result: '"a-default"',
+    expression: "aDefault",
+  });
+
+  info("3. Disable original variable mapping");
+  await toggleMapScopes(dbg);
+
+  const notificationMessage = DEBUGGER_L10N.getFormatStr(
+    "editorNotificationFooter.noOriginalScopes",
+    DEBUGGER_L10N.getStr("scopes.showOriginalScopes")
+  );
+
+  info(
+    "Assert that previews are disabled and the footer notification is visible"
+  );
+  await hoverAtPos(dbg, { line: 20, column: 17 });
+  await assertNoTooltip(dbg);
+  is(
+    findFooterNotificationMessage(dbg),
+    notificationMessage,
+    "The Original variable mapping warning is displayed"
+  );
+
+  info("4. StepOver with mapScopes disabled");
+  await stepOver(dbg, { shouldWaitForLoadedScopes: false });
+
+  info(
+    "Assert that previews are still disabled and the footer notification is visible"
+  );
+  await hoverAtPos(dbg, { line: 20, column: 17 });
+  await assertNoTooltip(dbg);
+
+  is(
+    findFooterNotificationMessage(dbg),
+    notificationMessage,
+    "The Original variable mapping warning is displayed"
+  );
+});
+
+function getOriginalScope(dbg) {
+  return dbg.selectors.getSelectedOriginalScope(
+    dbg.selectors.getCurrentThread()
+  );
+}