KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use check_resolutions method in wpt

Best JavaScript code snippet using wpt

timing-attack.js

Source:timing-attack.js

...3  if (isolated) {4    resolution = 5;5  }6  test(function() {7    function check_resolutions(times, length) {8      const end = length - 2;9      // we compare each value with the following ones10      for (let i = 0; i < end; i++) {11        const h1 = times[i];12        for (let j = i+1; j < end; j++) {13          const h2 = times[j];14          const diff = h2 - h1;15          assert_true((diff === 0) || ((diff * 1000) >= resolution),16            "Differences smaller than ' + resolution + ' microseconds: " + diff);17        }18      }19      return true;20    }21    const times = new Array(10);22    let index = 0;23    let hrt1, hrt2, hrt;24    assert_equals(self.crossOriginIsolated, isolated, "Document cross-origin isolated value matches");25    // rapid firing of performance.now26    hrt1 = performance.now();27    hrt2 = performance.now();28    times[index++] = hrt1;29    times[index++] = hrt2;30    // ensure that we get performance.now() to return a different value31    do {32      hrt = performance.now();33      times[index++] = hrt;34    } while ((hrt - hrt1) === 0);35    assert_true(check_resolutions(times, index), 'Difference should be at least ' + resolution + ' microseconds.');36  }, 'The recommended minimum resolution of the Performance interface has been set to ' + resolution + ' microseconds for cross-origin isolated contexts.');...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.