1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/client/framework/test/browser_toolbox_hosts_telemetry.js b/devtools/client/framework/test/browser_toolbox_hosts_telemetry.js
new file mode 100644
index 000000000..f8ff9b3e4
--- /dev/null
+++ b/devtools/client/framework/test/browser_toolbox_hosts_telemetry.js
@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const {Toolbox} = require("devtools/client/framework/toolbox");
+const {SIDE, BOTTOM, WINDOW} = Toolbox.HostType;
+
+const URL = "data:text/html;charset=utf8,browser_toolbox_hosts_telemetry.js";
+
+function getHostHistogram() {
+  return Services.telemetry.getHistogramById("DEVTOOLS_TOOLBOX_HOST");
+}
+
+add_task(function* () {
+  // Reset it to make counting easier
+  getHostHistogram().clear();
+
+  info("Create a test tab and open the toolbox");
+  let tab = yield addTab(URL);
+  let target = TargetFactory.forTab(tab);
+  let toolbox = yield gDevTools.showToolbox(target, "webconsole");
+
+  yield changeToolboxHost(toolbox);
+  yield checkResults();
+  yield toolbox.destroy();
+
+  toolbox = target = null;
+  gBrowser.removeCurrentTab();
+
+  // Cleanup
+  getHostHistogram().clear();
+});
+
+function* changeToolboxHost(toolbox) {
+  info("Switch toolbox host");
+  yield toolbox.switchHost(SIDE);
+  yield toolbox.switchHost(WINDOW);
+  yield toolbox.switchHost(BOTTOM);
+  yield toolbox.switchHost(SIDE);
+  yield toolbox.switchHost(WINDOW);
+  yield toolbox.switchHost(BOTTOM);
+}
+
+function checkResults() {
+  let counts = getHostHistogram().snapshot().counts;
+  is(counts[0], 3, "Toolbox HostType bottom has 3 successful entries");
+  is(counts[1], 2, "Toolbox HostType side has 2 successful entries");
+  is(counts[2], 2, "Toolbox HostType window has 2 successful entries");
+}