Function runDebug

test/compress.js:155–169

(css, options)

    describe('debug option', () => {
        function runDebug(css, options) {
            const output = [];
            const tmp = console.error;

            try {
                console.error = (...args) => {
                    output.push(args.join(' '));
                };

                minify(css || '', options);
            } finally {
                console.error = tmp;
                return output;
            }
        }

        it('should output nothing to stderr if debug is not set', () => {
            assert(runDebug('.foo { color: red }').length === 0);