ohif-viewer/Packages/router-middleware-stack/tests/tinytests/notes.js

Tinytest.add('MiddlewareStack - dispatch', function (test) {
  var stack = new Iron.MiddlewareStack;
  var calls = {};
  var call = function (name) { 
    calls[name] = calls[name] || 0;
    calls[name]++;
  };

  // client middleware
  stack.push(function m1 (req, res, next) { 
    call('m1'); 
    next();
  });

  stack.push(function m2 (req, res, next) { 
    call('m2');
    this.next();
  });

  // client handlers
  var params;
  stack.push('/items/:id', function item (req, res, next) {
    call('item');
    params = this.params;
    next();
  });

  // same path is okay as long as name is different
  stack.push('/items/:id', function itemTwo (req, res, next) {
    call('item2');
  });

  // server handler
  stack.push('/server', function server (req, res, next) {
    call('server');
  }, { where: 'server' });

  var thisArg = {};

  if (Meteor.isClient) {
    stack.dispatch('/', {});
    test.equal(calls.m1, 1, 'm1 not called');
    test.equal(calls.m2, 1, 'm2 not called');
    test.isFalse(calls.item);
    test.isFalse(calls.item2);
    test.isFalse(calls.server);

    stack.dispatch('/items/1', thisArg);
    test.equal(calls.m1, 2, 'm1 not called');
    test.equal(calls.m2, 2, 'm2 not called');
    test.equal(calls.item, 1, 'item not called');
    test.equal(calls.item2, 1, 'item2 not called');
    test.isFalse(calls.server);

    var params = thisArg.params;
    test.equal(params.id, "1");

    stack.onServerDispatch(function () {
      call('serverDispatch');
    });

    stack.dispatch('/server', {});
    test.equal(calls.serverDispatch, 1);
  }

  if (Meteor.isServer) {
    stack.dispatch('/server', {});
    test.isFalse(calls.m1);
    test.isFalse(calls.m2);
    test.equal(calls.server, 1);
  }
});

Tinytest.add('MiddlewareStack - dispatch error handling', function (test) {
  if (Meteor.isClient) {
    var stack = new Iron.MiddlewareStack;
    var calls = [];
    stack.push(function (req, res, next) {
      calls.push(1);
      throw new Error('test');
    });

    stack.push(function (req, res, next) {
      calls.push(2);
      next();
    });

    stack.dispatch('/', {
      next: function (err) {
        calls.push(3);
        test.equal(err.message, 'test');
      }
    });

    test.equal(calls.length, 2);

    // first fn throws an error
    test.equal(calls[0], 1);

    // rest of middleware skipped 
    test.equal(calls[1], 3);
  }
});

Tinytest.add('MiddlewareStack - mounting paths', function (test) {
  var stack = new Iron.MiddlewareStack;
  var calls = [];

  if (Meteor.isClient) {
    // add a mounted handler at mountpath /foo
    stack.push('/foo', function (req, res, next) {
      calls.push({args: EJSON.clone(arguments), thisArg: EJSON.clone(this)});
      next();
    }, {mount: true});

    // add a regular handler at /foo/bar/baz
    stack.push('/foo/bar/baz', function (req, res, next) {
      calls.push({args: EJSON.clone(arguments), thisArg: EJSON.clone(this)});
    });

    stack.dispatch('/foo/bar/baz', {});

    // make sure it got called
    test.equal(calls.length, 2);

    // this.url
    test.equal(calls[0].thisArg.url, '/bar/baz', 'url wrong on controller');
    test.equal(calls[0].thisArg.originalUrl, '/foo/bar/baz', 'originalUrl wrong on controller');

    // fn (req, res, next)
    //  req.url
    test.equal(calls[0].args[0].url, '/bar/baz', 'url wrong on req');
    test.equal(calls[0].args[0].originalUrl, '/foo/bar/baz', 'originalUrl wrong on req');

    // now make sure the url is set back to the originalUrl for non mounted
    // handlers.
    test.equal(calls[1].thisArg.url, '/foo/bar/baz');
    test.equal(calls[1].thisArg.originalUrl, '/foo/bar/baz');

    // fn (req, res, next)
    //  req.url
    test.equal(calls[1].args[0].url, '/foo/bar/baz');
    test.equal(calls[1].args[0].originalUrl, '/foo/bar/baz');
  }

  if (Meteor.isServer) {
    stack.push('/foo', function (req, res, next) {
      calls.push({args: EJSON.clone(arguments), thisArg: EJSON.clone(this)});
      next();
    }, {mount: true, where: 'server'});

    // add a regular handler at /foo/bar/baz
    stack.push('/foo/bar/baz', function (req, res, next) {
      calls.push({args: EJSON.clone(arguments), thisArg: EJSON.clone(this)});
    }, {where: 'server'});

    stack.dispatch('/foo/bar/baz', {});

    // make sure it got called
    test.equal(calls.length, 2);

    // this.url
    test.equal(calls[0].thisArg.url, '/bar/baz');
    test.equal(calls[0].thisArg.originalUrl, '/foo/bar/baz');

    // fn (req, res, next)
    //  req.url
    test.equal(calls[0].args[0].url, '/bar/baz');
    test.equal(calls[0].args[0].originalUrl, '/foo/bar/baz');

    // now make sure the url is set back to the originalUrl for non mounted
    // handlers.
    test.equal(calls[1].thisArg.url, '/foo/bar/baz');
    test.equal(calls[1].thisArg.originalUrl, '/foo/bar/baz');

    // fn (req, res, next)
    //  req.url
    test.equal(calls[1].args[0].url, '/foo/bar/baz');
    test.equal(calls[1].args[0].originalUrl, '/foo/bar/baz');
  }
});

Tinytest.add('MiddlewareStack - append with options', function (test) {
  var fn1 = function () {};
  var fn2 = function () {};
  var stack = new Iron.MiddlewareStack;
  stack.append(fn1, fn2, {where: 'server'});

  test.equal(stack._stack[0].where, 'server');
  test.equal(stack._stack[1].where, 'server');
});

//TODO concat
//TODO append