| 'use strict'; |
| |
| // ======================================= |
| // |
| // Utility functions for testing keyframes |
| // |
| // ======================================= |
| |
| |
| // ------------------------------ |
| // Helper functions |
| // ------------------------------ |
| |
| /** |
| * Test equality between two lists of computed keyframes |
| * @param {Array.<ComputedKeyframe>} a - actual computed keyframes |
| * @param {Array.<ComputedKeyframe>} b - expected computed keyframes |
| */ |
| function assert_frame_lists_equal(a, b, message) { |
| assert_equals(a.length, b.length, `number of frames: ${(message || '')}`); |
| for (let i = 0; i < Math.min(a.length, b.length); i++) { |
| assert_frames_equal(a[i], b[i], |
| `ComputedKeyframe #${i}: ${(message || '')}`); |
| } |
| } |
| |
| /** Helper for assert_frame_lists_equal */ |
| function assert_frames_equal(a, b, name) { |
| assert_equals(Object.keys(a).sort().toString(), |
| Object.keys(b).sort().toString(), |
| `properties on ${name} should match`); |
| // Iterates sorted keys to ensure stable failures. |
| for (const p of Object.keys(a).sort()) { |
| if (typeof b[p] == 'number') |
| assert_approx_equals(a[p], b[p], 1e-6, `value for '${p}' on ${name}`); |
| else if (typeof b[p] == 'object') { |
| for (const key in b[p]) { |
| if (typeof b[p][key] == 'number') { |
| assert_approx_equals(a[p][key], b[p][key], 1e-6, |
| `value for '${p}.${key}' on ${name}`); |
| } else { |
| assert_equals((a[p][key] || 'undefined').toString(), |
| b[p][key].toString(), |
| `value for '${p}.${key}' on ${name}`); |
| } |
| } |
| } |
| else |
| assert_equals(a[p], b[p], `value for '${p}' on ${name}`); |
| } |
| } |
