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