import { computed, get, observer } from 'ember-metal';
import EmberObject from '../../../lib/system/object';
import { moduleFor, AbstractTestCase } from 'internal-test-helpers';

moduleFor(
  'EmberObject.extend',
  class extends AbstractTestCase {
    ['@test Basic extend'](assert) {
      let SomeClass = EmberObject.extend({ foo: 'BAR' });
      assert.ok(SomeClass.isClass, 'A class has isClass of true');
      let obj = new SomeClass();
      assert.equal(obj.foo, 'BAR');
    }

    ['@test Sub-subclass'](assert) {
      let SomeClass = EmberObject.extend({ foo: 'BAR' });
      let AnotherClass = SomeClass.extend({ bar: 'FOO' });
      let obj = new AnotherClass();
      assert.equal(obj.foo, 'BAR');
      assert.equal(obj.bar, 'FOO');
    }

    ['@test Overriding a method several layers deep'](assert) {
      let SomeClass = EmberObject.extend({
        fooCnt: 0,
        foo() {
          this.fooCnt++;
        },

        barCnt: 0,
        bar() {
          this.barCnt++;
        },
      });

      let AnotherClass = SomeClass.extend({
        barCnt: 0,
        bar() {
          this.barCnt++;
          this._super(...arguments);
        },
      });

      let FinalClass = AnotherClass.extend({
        fooCnt: 0,
        foo() {
          this.fooCnt++;
          this._super(...arguments);
        },
      });

      let obj = new FinalClass();
      obj.foo();
      obj.bar();
      assert.equal(obj.fooCnt, 2, 'should invoke both');
      assert.equal(obj.barCnt, 2, 'should invoke both');

      // Try overriding on create also
      obj = FinalClass.extend({
        foo() {
          this.fooCnt++;
          this._super(...arguments);
        },
      }).create();

      obj.foo();
      obj.bar();
      assert.equal(obj.fooCnt, 3, 'should invoke final as well');
      assert.equal(obj.barCnt, 2, 'should invoke both');
    }

    ['@test With concatenatedProperties'](assert) {
      let SomeClass = EmberObject.extend({
        things: 'foo',
        concatenatedProperties: ['things'],
      });
      let AnotherClass = SomeClass.extend({ things: 'bar' });
      let YetAnotherClass = SomeClass.extend({ things: 'baz' });
      let some = new SomeClass();
      let another = new AnotherClass();
      let yetAnother = new YetAnotherClass();
      assert.deepEqual(some.get('things'), ['foo'], 'base class should have just its value');
      assert.deepEqual(
        another.get('things'),
        ['foo', 'bar'],
        "subclass should have base class' and its own"
      );
      assert.deepEqual(
        yetAnother.get('things'),
        ['foo', 'baz'],
        "subclass should have base class' and its own"
      );
    }

    ['@test With concatenatedProperties class properties'](assert) {
      let SomeClass = EmberObject.extend();
      SomeClass.reopenClass({
        concatenatedProperties: ['things'],
        things: 'foo',
      });
      let AnotherClass = SomeClass.extend();
      AnotherClass.reopenClass({ things: 'bar' });
      let YetAnotherClass = SomeClass.extend();
      YetAnotherClass.reopenClass({ things: 'baz' });
      let some = new SomeClass();
      let another = new AnotherClass();
      let yetAnother = new YetAnotherClass();
      assert.deepEqual(
        get(some.constructor, 'things'),
        ['foo'],
        'base class should have just its value'
      );
      assert.deepEqual(
        get(another.constructor, 'things'),
        ['foo', 'bar'],
        "subclass should have base class' and its own"
      );
      assert.deepEqual(
        get(yetAnother.constructor, 'things'),
        ['foo', 'baz'],
        "subclass should have base class' and its own"
      );
    }

    ['@test Overriding a computed property with an observer'](assert) {
      let Parent = EmberObject.extend({
        foo: computed(function() {
          return 'FOO';
        }),
      });

      let seen = [];

      let Child = Parent.extend({
        foo: observer('bar', function() {
          seen.push(this.get('bar'));
        }),
      });

      let child = Child.create({ bar: 0 });

      assert.deepEqual(seen, []);

      child.set('bar', 1);

      assert.deepEqual(seen, [1]);

      child.set('bar', 2);

      assert.deepEqual(seen, [1, 2]);
    }
  }
);