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var R = require('../source');var eq = require('./shared/eq');

var albums = [  {title: 'Art of the Fugue', artist: 'Glenn Gould', genre: 'Baroque'},  {title: 'A Farewell to Kings', artist: 'Rush', genre: 'Rock'},  {title: 'Timeout', artist: 'Dave Brubeck Quartet', genre: 'Jazz'},  {title: 'Fly By Night', artist: 'Rush', genre: 'Rock'},  {title: 'Goldberg Variations', artist: 'Daniel Barenboim', genre: 'Baroque'},  {title: 'New World Symphony', artist: 'Leonard Bernstein', genre: 'Romantic'},  {title: 'Romance with the Unseen', artist: 'Don Byron', genre: 'Jazz'},  {title: 'Somewhere In Time', artist: 'Iron Maiden', genre: 'Metal'},  {title: 'In Times of Desparation', artist: 'Danny Holt', genre: 'Modern'},  {title: 'Evita', artist: 'Various', genre: 'Broadway'},  {title: 'Five Leaves Left', artist: 'Nick Drake', genre: 'Folk'},  {title: 'The Magic Flute', artist: 'John Eliot Gardiner', genre: 'Classical'}];

describe('sortBy', function() {  it('sorts by a simple property of the objects', function() {    var sortedAlbums = R.sortBy(R.prop('title'), albums);    eq(sortedAlbums.length, albums.length);    eq(sortedAlbums[0].title, 'A Farewell to Kings');    eq(sortedAlbums[11].title, 'Timeout');  });
  it('preserves object identity', function() {    var a = {value: 'a'};    var b = {value: 'b'};    var result = R.sortBy(R.prop('value'), [b, a]);    eq(result[0], a);    eq(result[1], b);  });
  it('sorts array-like object', function() {    var args = (function() { return arguments; }('c', 'a', 'b'));    var result = R.sortBy(R.identity, args);    eq(result[0], 'a');    eq(result[1], 'b');    eq(result[2], 'c');  });
});