| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| window.jsTestIsAsync = true; |
| |
| description("This tests early Math.random values are not consistently nearly identical."); |
| |
| var seen = 0; |
| var expected = 100; |
| var framesWithSimiliarEarlyRandomValues = 0; |
| var lastRandom1 = 0; |
| |
| window.addEventListener("message", function(event) { |
| if (event.data.similiar) |
| framesWithSimiliarEarlyRandomValues++; |
| |
| if (event.data.random1 === lastRandom1) |
| testFailed("Random number should be different between frames"); |
| lastRandom1 = event.data.random1; |
| |
| if (++seen === expected) { |
| shouldBeTrue("framesWithSimiliarEarlyRandomValues <= 5"); |
| if (framesWithSimiliarEarlyRandomValues > 5) |
| debug("framesWithSimiliarEarlyRandomValues: " + framesWithSimiliarEarlyRandomValues); |
| finishJSTest(); |
| } |
| }); |
| |
| function createFrame() { |
| var iframe = document.createElement("iframe"); |
| iframe.src = "../resources/math-random-initial-values-iframe.html"; |
| document.body.appendChild(iframe); |
| } |
| |
| for (var i = 0; i < expected; ++i) |
| createFrame(); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
