Bug 1855812 - Implement telemetry event for shopping ad clicks. r=perry.mcmanis

Differential Revision: https://phabricator.services.mozilla.com/D190958

browser/components/shopping/ShoppingSidebarChild.sys.mjs

@@ -124,6 +124,7 @@ export class ShoppingSidebarChild extends RemotePageChild {
       case "AdClicked":
         aid = event.detail.aid;
         this.#product.sendAttributionEvent("click", aid);
+        Glean.shopping.surfaceAdsClicked.record();
         break;
       case "AdImpression":
         aid = event.detail.aid;

browser/components/shopping/metrics.yaml

@@ -505,3 +505,20 @@ shopping:
         description: >
           Message id for the version of the feature callout shown.
         type: string
+
+  surface_ads_clicked:
+    type: event
+    description: |
+      An ad shown in the sidebar was clicked.
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1855812
+    data_reviews:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1855812
+    data_sensitivity:
+      - interaction
+    expires: 122
+    notification_emails:
+      - betling@mozilla.com
+      - fx-desktop-shopping-eng@mozilla.com
+    send_in_pings:
+      - events

toolkit/components/shopping/test/browser/browser_shopping_ads_test.js

@@ -8,6 +8,9 @@ const { sinon } = ChromeUtils.importESModule(
 );
 
 add_task(async function test_ad_attribution() {
+  await Services.fog.testFlushAllChildren();
+  Services.fog.testResetFOG();
+
   await SpecialPowers.pushPrefEnv({
     set: [
       ["toolkit.shopping.ohttpRelayURL", ""],
@@ -208,7 +211,15 @@ add_task(async function test_ad_attribution() {
     await clickedEvent;
     Assert.ok(true, "Got ad clicked event");
 
+    // Test the click was recorded by telemetry
+    await Services.fog.testFlushAllChildren();
+    var adsClickedEvents = Glean.shopping.surfaceAdsClicked.testGetValue();
+    Assert.equal(adsClickedEvents.length, 1, "should have recorded a click");
+    Assert.equal(adsClickedEvents[0].category, "shopping");
+    Assert.equal(adsClickedEvents[0].name, "surface_ads_clicked");
+
     gBrowser.removeTab(adTab);
+    Services.fog.testResetFOG();
   });
 
   await SpecialPowers.popPrefEnv();