1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/test/browser_net_columns_reset.js b/devtools/client/netmonitor/test/browser_net_columns_reset.js
new file mode 100644
index 0000000000..bdee8de75b
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_columns_reset.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Tests reset column menu item. Note that the column
+ * header is visible only if there are requests in the list.
+ */
+add_task(async function () {
+  const { monitor } = await initNetMonitor(SIMPLE_URL, {
+    requestCount: 1,
+  });
+  info("Starting test... ");
+
+  const { document, store, windowRequire } = monitor.panelWin;
+  const { Prefs } = windowRequire("devtools/client/netmonitor/src/utils/prefs");
+
+  const prefBefore = Prefs.visibleColumns;
+  const Actions = windowRequire("devtools/client/netmonitor/src/actions/index");
+  store.dispatch(Actions.batchEnable(false));
+
+  const wait = waitForNetworkEvents(monitor, 1);
+  await reloadBrowser();
+  await wait;
+
+  await hideColumn(monitor, "status");
+  await hideColumn(monitor, "waterfall");
+
+  EventUtils.sendMouseEvent(
+    { type: "contextmenu" },
+    document.querySelector("#requests-list-contentSize-button")
+  );
+
+  await selectContextMenuItem(monitor, "request-list-header-reset-columns");
+
+  ok(
+    JSON.stringify(prefBefore) === JSON.stringify(Prefs.visibleColumns),
+    "Reset columns item should reset columns pref"
+  );
+
+  return teardown(monitor);
+});