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

describe('construct', function() {  var Rectangle = function(w, h) {this.width = w; this.height = h;};  Rectangle.prototype.area = function() {return this.width * this.height;};
  it('turns a constructor function into one that can be called without `new`', function() {    var rect = R.construct(Rectangle);    var r1 = rect(3, 4);    eq(r1.constructor, Rectangle);    eq(r1.width, 3);    eq(r1.area(), 12);
    var regex = R.construct(RegExp);    var word = regex('word', 'gi');    eq(word.constructor, RegExp);    eq(word.source, 'word');    eq(word.global, true);  });
  it('can be used to create Date object', function() {    var date = R.construct(Date)(1984, 3, 26, 0, 0, 0, 0);    eq(date.constructor, Date);    eq(date.getFullYear(), 1984);  });
  it('supports constructors with no arguments', function() {    function Foo() {}    var foo = R.construct(Foo)();    eq(foo.constructor, Foo);  });
  it('does not support constructor with greater than ten arguments', function() {    assert.throws(function() {      function Foo($0, $1, $2, $3, $4, $5, $6, $7, $8, $9, $10) {        this.eleventh = $10;      }      R.construct(Foo);    }, function(err) {      return (err instanceof Error &&              err.message === 'Constructor with greater than ten arguments');    });  });
  it('returns a curried function', function() {    var rect = R.construct(Rectangle);    var rect3 = rect(3);    var r1 = rect3(4);    eq(r1.constructor, Rectangle);    eq(r1.width, 3);    eq(r1.height, 4);    eq(r1.area(), 12);
    var regex = R.construct(RegExp);    var word = regex('word');    var complete = word('gi');    eq(complete.constructor, RegExp);    eq(complete.source, 'word');    eq(complete.global, true);  });
});