1 files changed, 37 insertions, 0 deletions
diff --git a/devtools/client/inspector/flexbox/test/browser_flexbox_highlighter_opened_telemetry.js b/devtools/client/inspector/flexbox/test/browser_flexbox_highlighter_opened_telemetry.js
new file mode 100644
index 0000000000..62c63e8b9f
--- /dev/null
+++ b/devtools/client/inspector/flexbox/test/browser_flexbox_highlighter_opened_telemetry.js
@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the telemetry is correct when the flexbox highlighter is activated from
+// the layout view.
+
+const TEST_URI = URL_ROOT + "doc_flexbox_specific_cases.html";
+
+add_task(async function () {
+  await addTab(TEST_URI);
+  startTelemetry();
+  const { inspector, flexboxInspector } = await openLayoutView();
+  const { document: doc } = flexboxInspector;
+  const onFlexHighlighterToggleRendered = waitForDOM(
+    doc,
+    "#flexbox-checkbox-toggle"
+  );
+  await selectNode("#container", inspector);
+  const [flexHighlighterToggle] = await onFlexHighlighterToggleRendered;
+
+  await toggleHighlighterON(flexHighlighterToggle, inspector);
+  await toggleHighlighterOFF(flexHighlighterToggle, inspector);
+
+  checkResults();
+});
+
+function checkResults() {
+  checkTelemetry("devtools.layout.flexboxhighlighter.opened", "", 1, "scalar");
+  checkTelemetry(
+    "DEVTOOLS_FLEXBOX_HIGHLIGHTER_TIME_ACTIVE_SECONDS",
+    "",
+    null,
+    "hasentries"
+  );
+}