| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <style> |
| .parent { |
| background-position-y: 60px; |
| } |
| .target { |
| background-position-y: 40px; |
| } |
| </style> |
| <body> |
| <script src="resources/interpolation-test.js"></script> |
| <script> |
| assertInterpolation({ |
| property: 'background-position-y', |
| from: neutralKeyframe, |
| to: '80px', |
| }, [ |
| {at: -0.25, is: '30px'}, |
| {at: 0, is: '40px'}, |
| {at: 0.25, is: '50px'}, |
| {at: 0.5, is: '60px'}, |
| {at: 0.75, is: '70px'}, |
| {at: 1, is: '80px'}, |
| {at: 1.25, is: '90px'}, |
| ]); |
| |
| assertInterpolation({ |
| property: 'background-position-y', |
| from: 'initial', |
| to: 'bottom', |
| }, [ |
| {at: -0.25, is: '-25%'}, |
| {at: 0, is: '0%'}, |
| {at: 0.25, is: '25%'}, |
| {at: 0.5, is: '50%'}, |
| {at: 0.75, is: '75%'}, |
| {at: 1, is: '100%'}, |
| {at: 1.25, is: '125%'}, |
| ]); |
| |
| assertInterpolation({ |
| property: 'background-position-y', |
| from: 'inherit', |
| to: '80px', |
| }, [ |
| {at: -0.25, is: '55px'}, |
| {at: 0, is: '60px'}, |
| {at: 0.25, is: '65px'}, |
| {at: 0.5, is: '70px'}, |
| {at: 0.75, is: '75px'}, |
| {at: 1, is: '80px'}, |
| {at: 1.25, is: '85px'}, |
| ]); |
| |
| assertInterpolation({ |
| property: 'background-position-y', |
| from: '300px, 400px', |
| to: '500px, 600px, 700px', |
| }, [ |
| {at: -0.25, is: '250px'}, |
| {at: 0, is: '300px'}, |
| {at: 0.25, is: '350px'}, |
| {at: 0.5, is: '400px'}, |
| {at: 0.75, is: '450px'}, |
| {at: 1, is: '500px'}, |
| {at: 1.25, is: '550px'}, |
| ]); |
| </script> |
| </body> |
