30 lines
755 B
JavaScript
30 lines
755 B
JavaScript
const NEAR_ZERO = 5e-6; // 0.000005, Firefox fails at higher levels of precision.
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/**
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* Checks that the supplied values are equal with a high though not absolute degree of precision.
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* @param {Float} actual
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* @param {Float} expected
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* @param {string} message
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* @returns {undefined}
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*/
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function almostEquals (actual, expected, message) {
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message = message || (actual + ' did not equal ' + expected);
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this.pushResult({
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result: Math.abs(actual - expected) < NEAR_ZERO,
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actual,
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expected,
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message
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});
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}
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/**
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* @param {external:qunit} QUnit
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* @returns {external:qunit} The same instance passed in after extending
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*/
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export default function extend (QUnit) {
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QUnit.extend(QUnit.assert, {
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almostEquals
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});
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return QUnit;
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}
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