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

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+'use strict';
+
+/* global verticalPreferences, MockDatastore, MockNavigatorDatastore */
+
+require('/shared/test/unit/mocks/mock_navigator_datastore.js');
+require('/shared/js/homescreens/vertical_preferences.js');
+
+suite('vertical_preferences.js >', function() {
+
+  var realDatastore = null,
+      gridCols = 'grid.cols',
+      cols = 3;
+
+  suiteSetup(function() {
+    realDatastore = navigator.getDataStores;
+  });
+
+  suiteTeardown(function() {
+    navigator.getDataStores = realDatastore;
+  });
+
+  setup(function() {
+    navigator.getDataStores = MockNavigatorDatastore.getDataStores;
+  });
+
+  teardown(function() {
+    MockDatastore._inError = false;
+    MockDatastore._records = Object.create(null);
+  });
+
+  test('testing not getDataStores defined >', function(done) {
+    navigator.getDataStores = undefined;
+    verticalPreferences.get(gridCols).then(function(value) {
+      // Do noting
+    }, function(e) {
+      assert.equal(e.name, 'NO_DATASTORE');
+      done();
+    });
+  });
+
+  test('testing no access to datastore >', function(done) {
+    navigator.getDataStores = function() {
+      return {
+        then: function(resolve, reject) {
+          resolve({
+            length: 0
+          });
+        }
+      };
+    };
+    
+    verticalPreferences.get(gridCols).then(function(value) {
+      // Do noting
+    }, function(e) {
+      assert.equal(e.name, 'NO_ACCESS_TO_DATASTORE');
+      done();
+    });
+  });
+
+  test('calling to put method - added >', function(done) {
+    verticalPreferences.put(gridCols, cols).then(done);
+  });
+
+  test('calling to put method - failed >', function(done) {
+    MockDatastore._inError = true;
+    verticalPreferences.put(gridCols, cols).then(function() {
+      // Do nothing here
+    }, function() {
+      done();
+    });
+  });
+
+  test('calling to get method - OK >', function(done) {
+    verticalPreferences.put(gridCols, cols).then(function() {
+      verticalPreferences.get(gridCols).then(function(value) {
+        assert.equal(value, cols);
+        done();
+      });
+    });
+  });
+
+  test('calling to get method - failed >', function(done) {
+    MockDatastore._inError = true;
+    verticalPreferences.get(gridCols).then(function() {
+      // Do nothing here
+    }, function() {
+      done();
+    });
+  });
+
+  test('testing addEventListener for "updated" event >', function(done) {
+    verticalPreferences.addEventListener('updated', function onUpdated(event) {
+      verticalPreferences.removeEventListener('updated', onUpdated);
+      assert.equal(event.type, 'updated');
+      assert.equal(event.target.name, gridCols);
+      assert.equal(event.target.value, cols);
+      done();
+    });
+
+    verticalPreferences.put(gridCols, cols);
+  });
+
+  test('testing removeEventListener >', function(done) {
+    var onUpdated = function() {
+      done(new Error('The "updated" listener should NOT be called!!!'));
+    };
+
+    verticalPreferences.addEventListener('updated', onUpdated);
+    var ret = verticalPreferences.removeEventListener('updated', onUpdated);
+    assert.isTrue(ret);
+
+    verticalPreferences.put(gridCols, cols).then(function() {
+      done();
+    });
+  });
+
+  test('testing removeEventListener unknown type >', function() {
+    assert.isFalse(verticalPreferences.removeEventListener('dog', function() {
+      // Do nothing...
+    }));
+  });
+
+  test('testing removeEventListener unknown callback >', function() {
+    assert.isFalse(verticalPreferences.removeEventListener('updated',
+      function() {
+        // Do nothing...
+      }
+    ));
+  });
+});