This tests that SVGSVGElement.unsuspendRedraw() does not throw an exception if the redraw suspend timeout has elapsed. After loading the test, wait for one second. Some time before the one second has elapsed, the rectangle should change color to indicate the result of the test: black if the test did not run, red if the test failed and green if the test passed.
Run the test. No interaction required.
The test is passed if the rectangle is green one second after the test is loaded.