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// Only test a subset of tests with, e.g., ?1-10 in the URL.
// Can be used together with <meta name="variant" content="...">
// Sample usage:
// for (const test of tests) {
// subsetTest(async_test, test.fn, test.name);
// }
(function() {
var subTestStart = 0;
var subTestEnd = Infinity;
var match;
if (location.search) {
match = /(?:^\?|&)(\d+)-(\d+|last)(?:&|$)/.exec(location.search);
if (match) {
subTestStart = parseInt(match[1], 10);
if (match[2] !== "last") {
subTestEnd = parseInt(match[2], 10);
}
}
}
function shouldRunSubTest(currentSubTest) {
return currentSubTest >= subTestStart && currentSubTest <= subTestEnd;
}
var currentSubTest = 0;
function subsetTest(testFunc, ...args) {
currentSubTest++;
if (shouldRunSubTest(currentSubTest)) {
return testFunc(...args);
}
return null;
}
self.shouldRunSubTest = shouldRunSubTest;
self.subsetTest = subsetTest;
})();
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