| <!DOCTYPE html> |
| <head> |
| <meta charset="utf-8"> |
| <link rel="help" src="https://www.w3.org/TR/web-animations-1/#processing-a-keyframes-argument"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="support/testcommon.js"></script> |
| <title>Keyframes with invalid offsets</title> |
| </head> |
| <script> |
| test(() => { |
| assert_throws_js(TypeError, |
| function() { |
| document.documentElement.animate([ |
| {offset: 0.6}, |
| {offset: 0.4} |
| ]); |
| }); |
| }, 'Offsets must be loosely sorted'); |
| |
| test(() => { |
| assert_throws_js(TypeError, |
| function() { |
| document.documentElement.animate([ |
| {offset: 'whatever'} |
| ]); |
| }); |
| }, 'Invalid offset'); |
| |
| test(() => { |
| assert_throws_js(TypeError, |
| function() { |
| document.documentElement.animate([ |
| {offset: -1} |
| ]); |
| }); |
| }, 'Offsets must be null or in the range [0,1]'); |
| </script> |
