24 lines
686 B
JavaScript
24 lines
686 B
JavaScript
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var test = require('tape');
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var ss = require('../');
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test('geometric mean', function(t) {
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// From http://en.wikipedia.org/wiki/Geometric_mean
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test('can get the mean of two numbers', function(t) {
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t.equal(ss.geometric_mean([2, 8]), 4);
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t.equal(ss.geometric_mean([4, 1, 1 / 32]), 0.5);
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t.equal(Math.round(ss.geometric_mean([2, 32, 1])), 4);
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t.end();
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});
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test('returns null for empty lists', function(t) {
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t.equal(ss.geometric_mean([]), null);
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t.end();
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});
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test('returns null for lists with negative numbers', function(t) {
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t.equal(ss.geometric_mean([-1]), null);
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t.end();
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});
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t.end();
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});
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