| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../resources/js-test.js"></script> |
| </head> |
| <body style="margin: 0; padding: 0;"> |
| <div style="margin: 0; width: 700px; margin: 10px; background: black; overflow: hidden;"> |
| <div id="test" style="width: 697px; height: 200px; background-color: red; margin: 0 auto"></div> |
| </div> |
| <script> |
| var testEl = document.getElementById('test'); |
| var testRect = testEl.getBoundingClientRect(); |
| var parentRect = testEl.parentElement.getBoundingClientRect(); |
| |
| var expectedMarginWidth = String((parentRect.width - testRect.width) / 2); |
| shouldBe('testRect.left - parentRect.left', expectedMarginWidth); |
| shouldBe('parentRect.right - testRect.right', expectedMarginWidth); |
| </script> |
| </body> |
| </html> |
