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-rw-r--r--dom/tests/browser/browser_keypressTelemetry.js69
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/tests/browser/browser_keypressTelemetry.js b/dom/tests/browser/browser_keypressTelemetry.js
new file mode 100644
index 0000000000..e2ae309201
--- /dev/null
+++ b/dom/tests/browser/browser_keypressTelemetry.js
@@ -0,0 +1,69 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var EventUtils = {};
+var PaintListener = {};
+Services.scriptloader.loadSubScript(
+ "chrome://mochikit/content/tests/SimpleTest/EventUtils.js",
+ EventUtils
+);
+
+function getRecordedKeypressCount() {
+ let snapshot = Services.telemetry.getSnapshotForHistograms("main", false);
+
+ var totalCount = 0;
+ for (var prop in snapshot) {
+ if (snapshot[prop].KEYPRESS_PRESENT_LATENCY) {
+ dump("found snapshot");
+ totalCount += Object.values(
+ snapshot[prop].KEYPRESS_PRESENT_LATENCY.values
+ ).reduce((a, b) => a + b, 0);
+ }
+ }
+
+ return totalCount;
+}
+
+add_task(async function () {
+ await SpecialPowers.pushPrefEnv({
+ set: [["toolkit.telemetry.ipcBatchTimeout", 10]],
+ });
+ let histogram = Services.telemetry.getHistogramById(
+ "KEYPRESS_PRESENT_LATENCY"
+ );
+ histogram.clear();
+
+ waitForExplicitFinish();
+
+ gURLBar.focus();
+ await SimpleTest.promiseFocus(window);
+ EventUtils.sendChar("x");
+
+ await ContentTaskUtils.waitForCondition(
+ () => {
+ return getRecordedKeypressCount() > 0;
+ },
+ "waiting for telemetry",
+ 200,
+ 600
+ );
+ let result = getRecordedKeypressCount();
+ Assert.equal(result, 1, "One keypress recorded");
+
+ gURLBar.focus();
+ await SimpleTest.promiseFocus(window);
+ EventUtils.sendChar("x");
+
+ await ContentTaskUtils.waitForCondition(
+ () => {
+ return getRecordedKeypressCount() > 1;
+ },
+ "waiting for telemetry",
+ 200,
+ 600
+ );
+ result = getRecordedKeypressCount();
+ Assert.equal(result, 2, "Two keypresses recorded");
+});