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

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2014-12-16 23:53:29 +00:00
var test = require('tape');
var ss = require('../');
test('median', function(t) {
test('can get the median of three numbers', function(t) {
t.equal(ss.median([1, 2, 3]), 2);
t.end();
});
test('can get the median of two numbers', function(t) {
t.equal(ss.median([1, 2]), 1.5);
t.end();
});
test('can get the median of four numbers', function(t) {
t.equal(ss.median([1, 2, 3, 4]), 2.5);
t.end();
});
test('gives null for the median of an empty list', function(t) {
t.equal(ss.median([]), null);
t.end();
});
test('sorts numbers numerically', function(t) {
t.equal(ss.median([8, 9, 10]), 9);
t.end();
});
test('does not change the sorting order of its input', function(t) {
var x = [1, 0];
t.equal(ss.median(x), 0.5);
t.equal(x[0], 1);
t.equal(x[1], 0);
t.end();
});
t.end();
});