diff -r 000000000000 -r 6474c204b198 browser/devtools/netmonitor/test/browser_net_page-nav.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/netmonitor/test/browser_net_page-nav.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if page navigation ("close", "navigate", etc.) triggers an appropriate
+ * action in the network monitor.
+ */
+
+function test() {
+  initNetMonitor(SIMPLE_URL).then(([aTab, aDebuggee, aMonitor]) => {
+    info("Starting test... ");
+
+    testNavigate(() => testNavigateBack(() => testClose(() => finish())));
+
+    function testNavigate(aCallback) {
+      info("Navigating forward...");
+
+      aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.TARGET_WILL_NAVIGATE, () => {
+        is(aDebuggee.location, SIMPLE_URL,
+          "Target started navigating to the correct location.");
+
+        aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.TARGET_DID_NAVIGATE, () => {
+          is(aDebuggee.location, NAVIGATE_URL,
+            "Target finished navigating to the correct location.");
+
+          aCallback();
+        });
+      });
+
+      aDebuggee.location = NAVIGATE_URL;
+    }
+
+    function testNavigateBack(aCallback) {
+      info("Navigating backward...");
+
+      aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.TARGET_WILL_NAVIGATE, () => {
+        is(aDebuggee.location, NAVIGATE_URL,
+          "Target started navigating back to the previous location.");
+
+        aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.TARGET_DID_NAVIGATE, () => {
+          is(aDebuggee.location, SIMPLE_URL,
+            "Target finished navigating back to the previous location.");
+
+          aCallback();
+        });
+      });
+
+      aDebuggee.location = SIMPLE_URL;
+    }
+
+    function testClose(aCallback) {
+      info("Closing...");
+
+      aMonitor.once("destroyed", () => {
+        ok(!aMonitor._controller.client,
+          "There shouldn't be a client available after destruction.");
+        ok(!aMonitor._controller.tabClient,
+          "There shouldn't be a tabClient available after destruction.");
+        ok(!aMonitor._controller.webConsoleClient,
+          "There shouldn't be a webConsoleClient available after destruction.");
+
+        aCallback();
+      });
+
+      removeTab(aTab);
+    }
+  });
+}