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gaia/apps/system/test/unit/system_banner_test.js

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+'use strict';
+/* global SystemBanner, AnimationEvent, MocksHelper */
+
+require('/shared/test/unit/mocks/mock_lazy_loader.js');
+
+var mocks = new MocksHelper([
+  'LazyLoader'
+]).init();
+
+suite('system/SystemBanner', function() {
+
+  var stubById;
+  var fakeElement;
+  var subject;
+  mocks.attachTestHelpers();
+
+  setup(function(done) {
+    fakeElement = document.createElement('div');
+    fakeElement.id = 'fake-element';
+    fakeElement.style.cssText = 'height: 100px; display: block;';
+    stubById = this.sinon.stub(document, 'getElementById')
+                          .returns(fakeElement.cloneNode(true));
+
+    requireApp('system/js/system_banner.js', function() {
+      subject = new SystemBanner();
+      subject.getBanner().then(function(banner) {
+        // Stub gaia-toast functionality.
+        banner.show = function() {};
+        banner.hide = function() {};
+
+        // Stub SystemBanner.getBanner to return immediately.
+        this.sinon.stub(subject, 'getBanner', function() {
+          return {
+            then: function(fn) {
+              fn(banner);
+            }
+          };
+        });
+
+        done();
+      }.bind(this));
+    }.bind(this));
+  });
+
+  teardown(function() {
+    stubById.restore();
+  });
+
+  suite('get banner', function() {
+    test('generates banner element', function() {
+      var banner = subject._banner;
+      assert.ok(banner);
+      assert.ok(banner.classList.contains('banner'));
+    });
+  });
+
+
+  suite('show', function() {
+
+    test('with no button', function() {
+      var banner = subject._banner;
+      subject.show('free_the_web');
+      assert.equal(banner.querySelector('.messages').firstElementChild
+        .getAttribute('data-l10n-id'), 'free_the_web');
+      assert.equal(banner.querySelectorAll('.button').length, 0);
+    });
+
+    test('with a button', function() {
+      var banner = subject._banner;
+      subject.show('see_the_web', { label: 'mozillaL10nId' });
+      assert.equal(banner.querySelector('.messages p')
+        .getAttribute('data-l10n-id'), 'see_the_web');
+      assert.equal(banner.querySelector('.buttons .button')
+        .getAttribute('data-l10n-id'), 'mozillaL10nId');
+    });
+  });
+
+  suite('hide', function() {
+
+    test('removes visible class after close animation', function() {
+      var banner = subject._banner;
+      subject.show('eat_the_web');
+      assert.ok(subject._showing);
+      assert.equal(banner.parentNode.id, 'fake-element');
+      subject.hide();
+      assert.notOk(subject._showing);
+      var animationEnd = new AnimationEvent('animationend');
+      banner.dispatchEvent(animationEnd);
+      assert.notOk(banner.parentNode);
+    });
+  });
+});