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gaia/apps/verticalhome/test/unit/app_test.js

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+'use strict';
+/* global app */
+/* global MocksHelper, loadBodyHTML */
+
+require('/shared/test/unit/mocks/mock_lazy_loader.js');
+require('/shared/test/unit/mocks/mock_settings_listener.js');
+require('/shared/test/unit/load_body_html_helper.js');
+require('/shared/elements/gaia_grid/js/grid_dragdrop.js');
+require('/shared/elements/gaia_grid/js/grid_icon_renderer.js');
+require('/shared/elements/gaia_grid/js/grid_layout.js');
+require('/shared/elements/gaia_grid/js/grid_view.js');
+require('/shared/elements/gaia_grid/script.js');
+require('/shared/elements/gaia_grid/js/items/grid_item.js');
+require('/shared/elements/gaia_grid/js/items/divider.js');
+require('/shared/elements/gaia_grid/js/items/placeholder.js');
+require('/test/unit/mock_item_store.js');
+
+var mocksHelperForApp = new MocksHelper([
+  'LazyLoader',
+  'ItemStore',
+  'SettingsListener'
+]).init();
+
+suite('app.js > ', function() {
+
+  mocksHelperForApp.attachTestHelpers();
+
+  var raf, scrollStub;
+  var documentHiddenValue = false;
+
+  suiteSetup(function() {
+    Object.defineProperty(document, 'hidden', {
+      configurable: true,
+      get: function() {
+        return documentHiddenValue;
+      }
+    });
+  });
+
+  setup(function(done) {
+    raf = sinon.stub(window, 'requestAnimationFrame',
+                     function(callback) { callback(); });
+    scrollStub = sinon.stub(window, 'scrollTo');
+    loadBodyHTML('/index.html');
+    var grid = document.querySelector('gaia-grid')._grid;
+    // Some features are loaded after rendering like dragdrop
+    grid.render();
+    require('/js/app.js', done);
+    this.sinon.useFakeTimers();
+  });
+
+  teardown(function() {
+    raf.restore();
+    scrollStub.restore();
+    documentHiddenValue = false;
+  });
+
+  test('Scrolls on hashchange', function() {
+    window.scrollY = 100000;
+    window.dispatchEvent(new CustomEvent('hashchange'));
+
+    assert.ok(scrollStub.called);
+  });
+
+  test('Scrolls on gaiagrid-attention', function() {
+    window.scrollY = 100000;
+    app.grid.dispatchEvent(
+      new CustomEvent('gaiagrid-attention', {detail: {y: 0, height: 0}}));
+    assert.ok(scrollStub.called);
+  });
+
+  test('No scrolling while context menu is displayed', function() {
+    window.dispatchEvent(new CustomEvent('context-menu-open'));
+    window.dispatchEvent(new CustomEvent('hashchange'));
+    assert.isFalse(raf.called);
+    window.dispatchEvent(new CustomEvent('context-menu-close'));
+  });
+
+  test('Transition property in edit-mode', function() {
+    app.grid.dispatchEvent(new CustomEvent('editmode-start'));
+    assert.equal(app.grid.style.transition, app.EDIT_MODE_TRANSITION_STYLE);
+
+    app.grid.dispatchEvent(new CustomEvent('editmode-end'));
+    assert.equal(app.grid.style.transition, '');
+  });
+
+  test('Hashchange event without dragdrop', function() {
+    var oldDragdrop = app.grid._grid.dragdrop;
+    app.grid._grid.dragdrop = undefined;
+    app.handleEvent({type: 'hashchange'});
+    app.grid._grid.dragdrop = oldDragdrop;
+    // This test was added for bug 1051061. If the test passes it means that
+    // the test did not throw an error and that bug is not a problem.
+    // No assertion is needed.
+  });
+
+  suite('When the homescreen is hidden', function() {
+    setup(function() {
+      documentHiddenValue = true;
+      document.dispatchEvent(new CustomEvent('visibilitychange'));
+    });
+
+    test('should hide the overflow to prevent displayport rendering',
+    function() {
+      assert.equal(document.body.style.overflow, 'hidden');
+    });
+
+    suite('then displayed again',function() {
+      setup(function() {
+        documentHiddenValue = false;
+        document.dispatchEvent(new CustomEvent('visibilitychange'));
+      });
+
+      test('should let the homescreen scroll after a tick', function() {
+        assert.equal(document.body.style.overflow, 'hidden');
+        this.sinon.clock.tick();
+        assert.equal(document.body.style.overflow, '');
+      });
+    });
+  });
+
+});