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

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

const { assertStringValue } = require('../helpers');

describe('#substr()', () => {
    it('should give the rest of a string if supplied with only startIndex', () => {
        assertStringValue(
            '0123456789',
            'substr(/simple/xpath/to/node, 5)',
            '56789'
        );
    });

    it('should give substring from start to finish if supplied with 2 indexes', () => {
        assertStringValue(
            '0123456789',
            'substr(/simple/xpath/to/node, 2, 4)',
            '23'
        );
    });

    it('substr()', () => {
        assertStringValue('substr("hello",0)', 'hello');
        assertStringValue('substr("hello",0,5)', 'hello');
        assertStringValue('substr("hello",1)', 'ello');
        assertStringValue('substr("hello",1,5)', 'ello');
        assertStringValue('substr("hello",1,4)', 'ell');
        assertStringValue('substr("hello",-2)', 'lo');
        assertStringValue('substr("hello",0,-1)', 'hell');
    });
});