1 files changed, 59 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/test/browser_net_columns_pref.js b/devtools/client/netmonitor/test/browser_net_columns_pref.js
new file mode 100644
index 0000000000..4c64ac8f94
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_columns_pref.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Tests if visible columns are properly saved. Note that the column
+ * header is visible only if there are requests in the list.
+ */
+
+add_task(async function () {
+  Services.prefs.setCharPref(
+    "devtools.netmonitor.visibleColumns",
+    '["status", "contentSize", "waterfall"]'
+  );
+
+  const { monitor } = await initNetMonitor(SIMPLE_URL, {
+    requestCount: 1,
+  });
+  info("Starting test... ");
+
+  const { document, store, windowRequire } = monitor.panelWin;
+  const Actions = windowRequire("devtools/client/netmonitor/src/actions/index");
+  store.dispatch(Actions.batchEnable(false));
+
+  const wait = waitForNetworkEvents(monitor, 1);
+  await reloadBrowser();
+  await wait;
+
+  ok(
+    document.querySelector("#requests-list-status-button"),
+    "Status column should be shown"
+  );
+  ok(
+    document.querySelector("#requests-list-contentSize-button"),
+    "Content size column should be shown"
+  );
+
+  await hideColumn(monitor, "status");
+  await hideColumn(monitor, "contentSize");
+
+  let visibleColumns = JSON.parse(
+    Services.prefs.getCharPref("devtools.netmonitor.visibleColumns")
+  );
+
+  ok(!visibleColumns.includes("status"), "Pref should be synced for status");
+  ok(
+    !visibleColumns.includes("contentSize"),
+    "Pref should be synced for contentSize"
+  );
+
+  await showColumn(monitor, "status");
+
+  visibleColumns = JSON.parse(
+    Services.prefs.getCharPref("devtools.netmonitor.visibleColumns")
+  );
+
+  ok(visibleColumns.includes("status"), "Pref should be synced for status");
+});