1 files changed, 123 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_switch-to-inspector-on-pick.js b/devtools/client/inspector/test/browser_inspector_switch-to-inspector-on-pick.js
new file mode 100644
index 0000000000..31a852ce5e
--- /dev/null
+++ b/devtools/client/inspector/test/browser_inspector_switch-to-inspector-on-pick.js
@@ -0,0 +1,123 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Testing that clicking the pick button switches the toolbox to the inspector
+// panel.
+
+const TEST_URI =
+  "data:text/html;charset=UTF-8,<!DOCTYPE html><script>console.log(`hello`)</script><p>Switch to inspector on pick</p>";
+const ALL_CHANNELS = Ci.nsITelemetry.DATASET_ALL_CHANNELS;
+
+const DATA = [
+  {
+    timestamp: 3562,
+    category: "devtools.main",
+    method: "enter",
+    object: "webconsole",
+    extra: {
+      host: "bottom",
+      start_state: "initial_panel",
+      panel_name: "webconsole",
+      cold: "true",
+      message_count: "1",
+      width: "1300",
+    },
+  },
+  {
+    timestamp: 3671,
+    category: "devtools.main",
+    method: "exit",
+    object: "webconsole",
+    extra: {
+      host: "bottom",
+      width: "1300",
+      panel_name: "webconsole",
+      next_panel: "inspector",
+      reason: "inspect_dom",
+    },
+  },
+  {
+    timestamp: 3671,
+    category: "devtools.main",
+    method: "enter",
+    object: "inspector",
+    extra: {
+      host: "bottom",
+      start_state: "inspect_dom",
+      panel_name: "inspector",
+      cold: "true",
+      width: "1300",
+    },
+  },
+];
+
+add_task(async function () {
+  // Let's reset the counts.
+  Services.telemetry.clearEvents();
+
+  // Ensure no events have been logged
+  const snapshot = Services.telemetry.snapshotEvents(ALL_CHANNELS, true);
+  ok(!snapshot.parent, "No events have been logged for the main process");
+
+  const tab = await addTab(TEST_URI);
+  const toolbox = await openToolbox(tab);
+
+  await startPickerAndAssertSwitchToInspector(toolbox);
+
+  info("Stopping element picker.");
+  await toolbox.nodePicker.stop({ canceled: true });
+
+  checkResults();
+});
+
+async function openToolbox(tab) {
+  info("Opening webconsole.");
+  return gDevTools.showToolboxForTab(tab, { toolId: "webconsole" });
+}
+
+async function startPickerAndAssertSwitchToInspector(toolbox) {
+  info("Clicking element picker button.");
+  const pickButton = toolbox.doc.querySelector("#command-button-pick");
+  pickButton.click();
+
+  info("Waiting for inspector to be selected.");
+  await toolbox.once("inspector-selected");
+  is(toolbox.currentToolId, "inspector", "Switched to the inspector");
+}
+
+function checkResults() {
+  const snapshot = Services.telemetry.snapshotEvents(ALL_CHANNELS, true);
+  const events = snapshot.parent.filter(
+    event =>
+      (event[1] === "devtools.main" && event[2] === "enter") ||
+      event[2] === "exit"
+  );
+
+  for (const i in DATA) {
+    const [timestamp, category, method, object, value, extra] = events[i];
+    const expected = DATA[i];
+
+    // ignore timestamp
+    ok(timestamp > 0, "timestamp is greater than 0");
+    is(category, expected.category, "category is correct");
+    is(method, expected.method, "method is correct");
+    is(object, expected.object, "object is correct");
+    is(value, null, "value is correct");
+    ok(extra.width > 0, "width is greater than 0");
+
+    checkExtra("host", extra, expected);
+    checkExtra("start_state", extra, expected);
+    checkExtra("reason", extra, expected);
+    checkExtra("panel_name", extra, expected);
+    checkExtra("next_panel", extra, expected);
+    checkExtra("message_count", extra, expected);
+    checkExtra("cold", extra, expected);
+  }
+}
+
+function checkExtra(propName, extra, expected) {
+  if (extra[propName]) {
+    is(extra[propName], expected.extra[propName], `${propName} is correct`);
+  }
+}