1 files changed, 107 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/test/browser_net_pane-toggle.js b/devtools/client/netmonitor/test/browser_net_pane-toggle.js
new file mode 100644
index 0000000000..ab6cb63740
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_pane-toggle.js
@@ -0,0 +1,107 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Tests if toggling the details pane works as expected.
+ */
+
+add_task(async function () {
+  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");
+  const { getSelectedRequest, getSortedRequests } = windowRequire(
+    "devtools/client/netmonitor/src/selectors/index"
+  );
+
+  store.dispatch(Actions.batchEnable(false));
+
+  ok(
+    !document.querySelector(".sidebar-toggle"),
+    "The pane toggle button should not be visible."
+  );
+  is(
+    !!document.querySelector(".network-details-bar"),
+    false,
+    "The details pane should be hidden when the frontend is opened."
+  );
+  is(
+    getSelectedRequest(store.getState()),
+    undefined,
+    "There should be no selected item in the requests menu."
+  );
+
+  const networkEvent = waitForNetworkEvents(monitor, 1);
+  await reloadBrowser();
+  await networkEvent;
+
+  ok(
+    !document.querySelector(".sidebar-toggle"),
+    "The pane toggle button should not be visible after the first request."
+  );
+  is(
+    !!document.querySelector(".network-details-bar"),
+    false,
+    "The details pane should still be hidden after the first request."
+  );
+  is(
+    getSelectedRequest(store.getState()),
+    undefined,
+    "There should still be no selected item in the requests menu."
+  );
+
+  store.dispatch(Actions.toggleNetworkDetails());
+
+  const toggleButton = document.querySelector(".sidebar-toggle");
+
+  is(
+    toggleButton.classList.contains("pane-collapsed"),
+    false,
+    "The pane toggle button should now indicate that the details pane is " +
+      "not collapsed anymore."
+  );
+  is(
+    !!document.querySelector(".network-details-bar"),
+    true,
+    "The details pane should not be hidden after toggle button was pressed."
+  );
+  isnot(
+    getSelectedRequest(store.getState()),
+    undefined,
+    "There should be a selected item in the requests menu."
+  );
+  is(
+    getSelectedIndex(store.getState()),
+    0,
+    "The first item should be selected in the requests menu."
+  );
+
+  EventUtils.sendMouseEvent({ type: "click" }, toggleButton);
+
+  is(
+    !!document.querySelector(".network-details-bar"),
+    false,
+    "The details pane should now be hidden after the toggle button was pressed again."
+  );
+  is(
+    getSelectedRequest(store.getState()),
+    undefined,
+    "There should now be no selected item in the requests menu."
+  );
+
+  await teardown(monitor);
+
+  function getSelectedIndex(state) {
+    if (!state.requests.selectedId) {
+      return -1;
+    }
+    return getSortedRequests(state).findIndex(
+      r => r.id === state.requests.selectedId
+    );
+  }
+});