How to check if two files have the same content?

Question

I am using mocha/supertest/should.js to test my Rest Service

GET /files/ returns file as stream.

How can I assert in should.js

Answer 1

Solution using file-compare and node-temp:

it('should return test2.json as a stream', function (done) {
    var writeStream = temp.createWriteStream();
    temp.track();

    var req = api.get('/files/7386afde8992');

    req.on('end', function() {
        comparator.compare(writeStream.path, TEST2_JSON_FILE, function(result, err) {
            if (err) {
                return done(err);
            }

            result.should.true;
            done();
        });
    });

    req.pipe(writeStream);
});