openrosa-xpath-evaluator/test/integration/openrosa-xpath/random.spec.js

Wrapper for browsers' XPath evaluator with added support for OpenRosa extensions.

const _ = require('lodash');

const { assert, initDoc } = require('../helpers');

describe('#random()', () => {
    const doc = initDoc('');

    it('should return a number', () => {
        const vals = [];
        _.times(10, () => {
            // when
            const val = doc.xEval('random()').numberValue;

            // then
            assert.typeOf(val, 'number');

            vals.push(val);
        });

        // check the numbers are a bit random
        assert.equal(_.uniq(vals).length, vals.length);
    });

    it('random()', () => {
        assert.match(doc.xEval('random()').numberValue, /0\.[0-9]{12,}/);
    });
});