| 1 | 'use strict';
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| 2 |
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| 3 | var expect = require('chai').expect;
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| 4 | var GaussianKernel = require('./gaussian.js');
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| 5 |
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| 6 | describe('Kernel.GaussianKernel', function () {
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| 7 | describe('.apply', function () {
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| 8 | it('should calculate the Gaussian kernel with variance 1 when called with default parameters', function () {
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| 9 | expect(new GaussianKernel().apply([1, 2], [3, 4])).to.closeTo(0.01831563888, 1e-5);
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| 10 | });
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| 11 |
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| 12 | it('should correctly calculate the Gaussian kernel with custom variance', function () {
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| 13 | expect(new GaussianKernel(2).apply([1, 2], [3, 4])).to.closeTo(0.13533528323, 1e-5);
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| 14 | });
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| 15 |
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| 16 | it('should return 1 when a point is compared to itself', function () {
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| 17 | expect(new GaussianKernel().apply([1, 2], [1, 2])).to.closeTo(1, 1e-5);
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| 18 | });
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| 19 | });
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| 20 | }); |
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