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ac39321fc5
* Tinymath is now a Kibana package * Rename to @kbn/tinymath * Update import style * Update README * Use commonjs import syntax * Fix to commonjs export * More commonjs fixes
39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
/*
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* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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* or more contributor license agreements. Licensed under the Elastic License
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* and the Server Side Public License, v 1; you may not use this file except in
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* compliance with, at your election, the Elastic License or the Server Side
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* Public License, v 1.
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*/
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const { log } = require('../../src/functions/log.js');
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describe('Log', () => {
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it('numbers', () => {
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expect(log(1)).toEqual(Math.log(1));
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expect(log(3, 2)).toEqual(Math.log(3) / Math.log(2));
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expect(log(11, 3)).toEqual(Math.log(11) / Math.log(3));
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expect(log(42, 5)).toEqual(2.322344707681546);
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});
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it('arrays', () => {
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expect(log([3, 4, 5], 3)).toEqual([
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Math.log(3) / Math.log(3),
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Math.log(4) / Math.log(3),
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Math.log(5) / Math.log(3),
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]);
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expect(log([1, 2, 10], 10)).toEqual([
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Math.log(1) / Math.log(10),
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Math.log(2) / Math.log(10),
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Math.log(10) / Math.log(10),
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]);
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});
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it('number less than 1', () => {
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expect(() => log(-1)).toThrow('Must be greater than 0');
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});
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it('base out of range', () => {
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expect(() => log(1, -1)).toThrow('Base out of range');
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});
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});
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