filer/perf/simple-statistics/test/bernoulli_distribution.test.js

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2014-12-16 23:53:29 +00:00
var test = require('tape');
var ss = require('../');
test('bernoulli_distribution', function(t) {
test('can return generate probability and cumulative probability distributions for p = 0.3', function(t) {
t.equal('object', typeof ss.bernoulli_distribution(0.3));
t.equal(ss.bernoulli_distribution(0.3)[0], 0.7, ss.epsilon);
t.equal(ss.bernoulli_distribution(0.3)[1], 0.3, ss.epsilon);
t.end();
});
test('can return null when p is not a valid probability', function(t) {
t.equal(null, ss.bernoulli_distribution(-0.01), 'p should be greater than 0.0');
t.equal(null, ss.bernoulli_distribution(1.5), 'p should be less than 1.0');
t.end();
});
t.end();
});