Hapi server injection with multipart form

gistfile1.js

it('creates a new collection with an image as a binary buffer', function(done) {
    var endpoint = '/collections';
    var url = SERVER_URL + endpoint;
    var method = 'POST';
    
    var form = new FormData();
    
    form.append('json', {"name": "Red stuff collection","filter": {"colour": "red"}});
    form.append('image', require('fs').readFileSync('./test/data/image.jpg'));
    
    var endpoint = '/collections';
    var url = SERVER_URL + endpoint;
    var method = 'POST';
    
    server.inject({url: url, method: method, payload: form }, function(res) {
        console.log(res.result);
        expect(res.statusCode).to.equal(201);
        done();
    });
};

No public project, but this is the block of code I've been trying to work with before trying your solution. I tried your solution, but couldn't figure out how it should all link together. This is for an integration test.

form is a stream, even if it's just composed of buffers as above. You need to read out its data into an actual buffer before it can be written as a payload. Using stream-to-promise:

streamToPromise(form).then(function (form) {
  server.inject({url: url, method: method, payload: form}, function (res) {
    expect(res.statusCode).to.equal(201);
    done();
  });
});

Thanks Ben! I'm now getting a TypeError: Object #<Object> has no method 'on' error in FormData.CombinedStream.append (/Users/ro/Documents/sampleProject/node_modules/form-data/node_modules/combined-stream/lib/combined_stream.js:43:14)

This is being thrown from line 8.

Try bringing in the image as a readable stream instead of a buffer. Otherwise this is identical to the way I've successfully implemented it in the past.