var assert = require('assert')
  , collection_json = require('../');

function identity(x) { return x; }

function collection1() {
  return collection_json.fromObject({collection: {
    items: [
      { href: "http://example.com/1", links: [],
        data: [
          { prompt: "prompt1", name: "field-1", value: "1", baz: "woot" },
          { prompt: "prompt2", name: "field-2", value: "2", foz: "asdf" },
        ]
      },
      { href: "http://example.com/2", links: [],
        data: [
          { prompt: "prompt1", name: "field-1", value: "3" },
          { prompt: "prompt2", name: "field-2", value: "4" },
        ]
      }
    ]
  }});
}

describe('fromObject', function() {
  it('Has basic fields', function() {
    var collection = collection_json.fromObject({}).collection;
    assert.deepEqual(collection.items, []);
    assert.deepEqual(collection.links, []);
    assert.deepEqual(collection.queries, []);
    assert.equal(collection.template, undefined);
  });

  it('Can map data field in items', function() {
    assert.deepEqual(collection1().mapItems(identity), 
      [{"field-1": "1", "field-2": "2"}
      ,{"field-1": "3", "field-2": "4"}]);
    function f(map) { return parseInt(map["field-1"]) + parseInt(map["field-2"]); }
    assert.deepEqual(collection1().mapItems(f), [3, 7]);
  });
});

describe('collection object', function() {
  it('Can create objects from items', function() {
    assert.deepEqual(collection1().collection.items[0].toObject(), {
      "field-1": "1",
      "field-2": "2"
    });
  });
});