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

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

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

<test-fixture id="basic">
  <template>
    <gr-reporting></gr-reporting>
  </template>
</test-fixture>

<script>
  suite('gr-reporting tests', () => {
    let element;
    let sandbox;
    let clock;
    let fakePerformance;

    const NOW_TIME = 100;

    setup(() => {
      sandbox = sinon.sandbox.create();
      clock = sinon.useFakeTimers(NOW_TIME);
      element = fixture('basic');
      fakePerformance = {
        navigationStart: 1,
        loadEventEnd: 2,
      };
      sinon.stub(element, 'performanceTiming',
          {get() { return fakePerformance; }});
      sandbox.stub(element, 'reporter');
    });
    teardown(() => {
      sandbox.restore();
      clock.restore();
    });

    test('appStarted', () => {
      element.appStarted();
      assert.isTrue(
          element.reporter.calledWithExactly(
              'timing-report', 'UI Latency', 'App Started',
              NOW_TIME - fakePerformance.navigationStart
      ));
    });

    test('pageLoaded', () => {
      element.pageLoaded();
      assert.isTrue(
          element.reporter.calledWithExactly(
              'timing-report', 'UI Latency', 'Page Loaded',
              fakePerformance.loadEventEnd - fakePerformance.navigationStart)
      );
    });

    test('time and timeEnd', () => {
      const nowStub = sandbox.stub(element, 'now').returns(0);
      element.time('foo');
      nowStub.returns(1);
      element.time('bar');
      nowStub.returns(2);
      element.timeEnd('bar');
      nowStub.returns(3.123);
      element.timeEnd('foo');
      assert.isTrue(element.reporter.calledWithExactly(
          'timing-report', 'UI Latency', 'foo', '3ms'
      ));
      assert.isTrue(element.reporter.calledWithExactly(
          'timing-report', 'UI Latency', 'bar', '1ms'
      ));
    });

    suite('plugins', () => {
      setup(() => {
        element.reporter.restore();
        sandbox.stub(element, 'defaultReporter');
        sandbox.stub(Gerrit, '_arePluginsLoaded');
      });

      test('pluginsLoaded reports time', () => {
        Gerrit._arePluginsLoaded.returns(true);
        sandbox.stub(element, 'now').returns(42);
        element.pluginsLoaded();
        assert.isTrue(element.defaultReporter.calledWithExactly(
            'timing-report', 'UI Latency', 'PluginsLoaded', '42ms'
        ));
      });

      test('caches reports if plugins are not loaded', () => {
        Gerrit._arePluginsLoaded.returns(false);
        element.timeEnd('foo');
        assert.isFalse(element.defaultReporter.called);
      });

      test('reports if plugins are loaded', () => {
        Gerrit._arePluginsLoaded.returns(true);
        element.timeEnd('foo');
        assert.isTrue(element.defaultReporter.called);
      });

      test('reports cached events preserving order', () => {
        Gerrit._arePluginsLoaded.returns(false);
        element.timeEnd('foo');
        Gerrit._arePluginsLoaded.returns(true);
        element.timeEnd('bar');
        assert.isTrue(element.defaultReporter.firstCall.calledWith(
            'timing-report', 'UI Latency', 'foo'
        ));
        assert.isTrue(element.defaultReporter.secondCall.calledWith(
            'timing-report', 'UI Latency', 'bar'
        ));
      });
    });

    suite('location changed', () => {
      let pathnameStub;
      setup(() => {
        pathnameStub = sinon.stub(element, '_getPathname');
      });

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

      test('search', () => {
        pathnameStub.returns('/q/foo');
        element.locationChanged();
        assert.isTrue(element.reporter.calledWithExactly(
            'nav-report', 'Location Changed', 'Page', '/q/'));
      });

      test('change view', () => {
        pathnameStub.returns('/c/42/');
        element.locationChanged();
        assert.isTrue(element.reporter.calledWithExactly(
            'nav-report', 'Location Changed', 'Page', '/c/'));
      });

      test('change view', () => {
        pathnameStub.returns('/c/41/2');
        element.locationChanged();
        assert.isTrue(element.reporter.calledWithExactly(
            'nav-report', 'Location Changed', 'Page', '/c/'));
      });

      test('diff view', () => {
        pathnameStub.returns('/c/41/2/file.txt');
        element.locationChanged();
        assert.isTrue(element.reporter.calledWithExactly(
            'nav-report', 'Location Changed', 'Page', '/c//COMMIT_MSG'));
      });
    });

    suite('exception logging', () => {
      let fakeWindow;
      let reporter;

      const emulateThrow = function(msg, url, line, column, error) {
        return fakeWindow.onerror(msg, url, line, column, error);
      };

      setup(() => {
        reporter = sandbox.stub(GrReporting.prototype, 'reporter');
        fakeWindow = {
          handlers: {},
          addEventListener(type, handler) {
            this.handlers[type] = handler;
          },
        };
        sandbox.stub(console, 'error');
        window.GrReporting._catchErrors(fakeWindow);
      });

      test('is reported', () => {
        const error = new Error('bar');
        emulateThrow('bar', 'http://url', 4, 2, error);
        assert.isTrue(reporter.calledWith('error', 'exception', 'bar'));
        const payload = reporter.lastCall.args[3];
        assert.deepEqual(payload, {
          url: 'http://url',
          line: 4,
          column: 2,
          error,
        });
      });

      test('prevent default event handler', () => {
        assert.isTrue(emulateThrow());
      });

      test('unhandled rejection', () => {
        fakeWindow.handlers['unhandledrejection']({
          reason: {
            message: 'bar',
          },
        });
        assert.isTrue(reporter.calledWith('error', 'exception', 'bar'));
      });
    });
  });
</script>