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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-api-interface</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<script src="../../../test/test-pre-setup.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<link rel="import" href="../gr-js-api-interface/gr-js-api-interface.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-js-api-interface></gr-js-api-interface>
  </template>
</test-fixture>

<script>
  suite('gr-event-interface tests', async () => {
    await readyToTest();
    let sandbox;

    setup(() => {
      sandbox = sinon.sandbox.create();
    });

    teardown(() => {
      sandbox.restore();
    });

    suite('test on Gerrit', () => {
      setup(() => {
        fixture('basic');
        Gerrit.removeAllListeners();
      });

      test('communicate between plugin and Gerrit', done => {
        const eventName = 'test-plugin-event';
        let p;
        Gerrit.on(eventName, e => {
          assert.equal(e.value, 'test');
          assert.equal(e.plugin, p);
          done();
        });
        Gerrit.install(plugin => {
          p = plugin;
          Gerrit.emit(eventName, {value: 'test', plugin});
        }, '0.1',
        'http://test.com/plugins/testplugin/static/test.js');
      });

      test('listen on events from core', done => {
        const eventName = 'test-plugin-event';
        Gerrit.on(eventName, e => {
          assert.equal(e.value, 'test');
          done();
        });

        Gerrit.emit(eventName, {value: 'test'});
      });

      test('communicate across plugins', done => {
        const eventName = 'test-plugin-event';
        Gerrit.install(plugin => {
          Gerrit.on(eventName, e => {
            assert.equal(e.plugin.getPluginName(), 'testB');
            done();
          });
        }, '0.1',
        'http://test.com/plugins/testA/static/testA.js');

        Gerrit.install(plugin => {
          Gerrit.emit(eventName, {plugin});
        }, '0.1',
        'http://test.com/plugins/testB/static/testB.js');
      });
    });

    suite('test on interfaces', () => {
      let testObj;

      class TestClass extends EventEmitter {
      }

      setup(() => {
        testObj = new TestClass();
      });

      test('on', () => {
        const cbStub = sinon.stub();
        testObj.on('test', cbStub);
        testObj.emit('test');
        testObj.emit('test');
        assert.isTrue(cbStub.calledTwice);
      });

      test('once', () => {
        const cbStub = sinon.stub();
        testObj.once('test', cbStub);
        testObj.emit('test');
        testObj.emit('test');
        assert.isTrue(cbStub.calledOnce);
      });

      test('unsubscribe', () => {
        const cbStub = sinon.stub();
        const unsubscribe = testObj.on('test', cbStub);
        testObj.emit('test');
        unsubscribe();
        testObj.emit('test');
        assert.isTrue(cbStub.calledOnce);
      });

      test('off', () => {
        const cbStub = sinon.stub();
        testObj.on('test', cbStub);
        testObj.emit('test');
        testObj.off('test', cbStub);
        testObj.emit('test');
        assert.isTrue(cbStub.calledOnce);
      });

      test('removeAllListeners', () => {
        const cbStub = sinon.stub();
        testObj.on('test', cbStub);
        testObj.removeAllListeners('test');
        testObj.emit('test');
        assert.isTrue(cbStub.notCalled);
      });
    });
  });
</script>