Function assert_array_approx_equals

test/fixtures/wpt/resources/testharness.js:1763–1788

* Assert that each array property in ``actual`` is a number within * ± `epsilon` of the corresponding property in `expected`. * * @param {Array} actual - Array of test values. * @param {Array} expected - Array of values expected to be close to the values in ``actual``. * @pa

(actual, expected, epsilon, description)

     * @param {string} [description] - Description of the condition being tested.
     */
    function assert_array_approx_equals(actual, expected, epsilon, description)
    {
        /*
         * Test if two primitive arrays are equal within +/- epsilon
         */
        assert(actual.length === expected.length,
               "assert_array_approx_equals", description,
               "lengths differ, expected ${expected} got ${actual}",
               {expected:expected.length, actual:actual.length});

        for (var i = 0; i < actual.length; i++) {
            assert(actual.hasOwnProperty(i) === expected.hasOwnProperty(i),
                   "assert_array_approx_equals", description,
                   "property ${i}, property expected to be ${expected} but was ${actual}",
                   {i:i, expected:expected.hasOwnProperty(i) ? "present" : "missing",
                    actual:actual.hasOwnProperty(i) ? "present" : "missing"});
            assert(typeof actual[i] === "number",
                   "assert_array_approx_equals", description,
                   "property ${i}, expected a number but got a ${type_actual}",
                   {i:i, type_actual:typeof actual[i]});
            assert(Math.abs(actual[i] - expected[i]) <= epsilon,
                   "assert_array_approx_equals", description,
                   "property ${i}, expected ${expected} +/- ${epsilon}, expected ${expected} but got ${actual}",
                   {i:i, expected:expected[i], actual:actual[i], epsilon:epsilon});
        }
    }
    expose_assert(assert_array_approx_equals, "assert_array_approx_equals");

    /**