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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Tests that the telemetry count for the number of CSS Grid Elements on a page navigation
// is correct when the toolbox is opened.
const TEST_URI1 = `
<div></div>
`;
const TEST_URI2 = `
<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_URI1));
startTelemetry();
const { inspector } = await openLayoutView();
const { store } = inspector;
info("Navigate to TEST_URI2");
const onGridListUpdate = waitUntilState(
store,
state => state.grids.length == 1
);
await navigateTo(
"data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI2)
);
await onGridListUpdate;
checkResults();
});
function checkResults() {
// Check for:
// - 1 CSS Grid Element
checkTelemetry(
"DEVTOOLS_NUMBER_OF_CSS_GRIDS_IN_A_PAGE",
"",
{ 0: 0, 1: 1, 2: 0 },
"array"
);
}