1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/client/inspector/grids/test/browser_grids_highlighter-toggle-telemetry.js b/devtools/client/inspector/grids/test/browser_grids_highlighter-toggle-telemetry.js
new file mode 100644
index 0000000000..329acf3713
--- /dev/null
+++ b/devtools/client/inspector/grids/test/browser_grids_highlighter-toggle-telemetry.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the telemetry count is correct when the grid highlighter is activated from
+// the layout view.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid">
+    <div id="cell1">cell1</div>
+    <div id="cell2">cell2</div>
+  </div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  startTelemetry();
+  const { gridInspector, inspector } = await openLayoutView();
+  const { document: doc } = gridInspector;
+  const { highlighters, store } = inspector;
+
+  await selectNode("#grid", inspector);
+  const gridList = doc.getElementById("grid-list");
+  const checkbox = gridList.children[0].querySelector("input");
+
+  info("Toggling ON the CSS grid highlighter from the layout panel.");
+  const onHighlighterShown = highlighters.once("grid-highlighter-shown");
+  let onCheckboxChange = waitUntilState(
+    store,
+    state => state.grids.length == 1 && state.grids[0].highlighted
+  );
+  checkbox.click();
+  await onHighlighterShown;
+  await onCheckboxChange;
+
+  info("Toggling OFF the CSS grid highlighter from the layout panel.");
+  const onHighlighterHidden = highlighters.once("grid-highlighter-hidden");
+  onCheckboxChange = waitUntilState(
+    store,
+    state => state.grids.length == 1 && !state.grids[0].highlighted
+  );
+  checkbox.click();
+  await onHighlighterHidden;
+  await onCheckboxChange;
+
+  checkResults();
+});
+
+function checkResults() {
+  checkTelemetry("devtools.grid.gridinspector.opened", "", 1, "scalar");
+  checkTelemetry(
+    "DEVTOOLS_GRID_HIGHLIGHTER_TIME_ACTIVE_SECONDS",
+    "",
+    null,
+    "hasentries"
+  );
+}