Fix tests

Previously we tested the ProjectLoader helper object, but now all loading is confined to storage. Unfortunately I wasn't able to get enzyme to wait for the storage promise to resolve within componentDidUpdate, so I can't test the actual results of storage.load, just what it was called with.

test/unit/util/project-loader-hoc.test.jsx

 import React from 'react';
-import ProjectLoaderHOC, {ProjectLoader} from '../../../src/lib/project-loader-hoc.jsx';
+import ProjectLoaderHOC from '../../../src/lib/project-loader-hoc.jsx';
+import storage from '../../../src/lib/storage';
 import {mount} from 'enzyme';
 
 describe('ProjectLoaderHOC', () => {
@@ -7,34 +8,38 @@ describe('ProjectLoaderHOC', () => {
         const Component = ({projectData}) => <div>{projectData}</div>;
         const WrappedComponent = ProjectLoaderHOC(Component);
         window.location.hash = '#winning';
-        ProjectLoader.load = jest.fn((id, cb) => cb(null, null));
+        storage.load = jest.fn(() => Promise.resolve(null));
         const mounted = mount(<WrappedComponent />);
-        ProjectLoader.load.mockRestore();
+        storage.load.mockRestore();
         window.location.hash = '';
-        expect(mounted.find('div').exists()).toEqual(false);
+        const mountedDiv = mounted.find('div');
+        expect(mountedDiv.exists()).toEqual(false);
     });
 
     test('when there is no hash, it loads the default project', () => {
         const Component = ({projectData}) => <div>{projectData}</div>;
         const WrappedComponent = ProjectLoaderHOC(Component);
         window.location.hash = '';
+        storage.load = jest.fn((type, id) => Promise.resolve(id));
         const mounted = mount(<WrappedComponent />);
-        expect(mounted.find('div').text()).toEqual(JSON.stringify(ProjectLoader.DEFAULT_PROJECT_DATA));
+        expect(mounted.state().projectId).toEqual(0);
+        expect(storage.load).toHaveBeenCalledWith(
+            storage.AssetType.Project, 0, storage.DataFormat.JSON
+        );
+        storage.load.mockRestore();
     });
 
     test('when there is a hash, it tries to load that project', () => {
         const Component = ({projectData}) => <div>{projectData}</div>;
         const WrappedComponent = ProjectLoaderHOC(Component);
         window.location.hash = '#winning';
-        ProjectLoader.load = jest.fn((id, cb) => cb(null, id));
+        storage.load = jest.fn((type, id) => Promise.resolve({data: id}));
         const mounted = mount(<WrappedComponent />);
-        mounted.update();
-        ProjectLoader.load.mockRestore();
-        window.location.hash = '';
-        expect(mounted
-            .find('div')
-            .text()
-        ).toEqual('winning');
+        expect(mounted.state().projectId).toEqual('winning');
+        expect(storage.load).toHaveBeenLastCalledWith(
+            storage.AssetType.Project, 'winning', storage.DataFormat.JSON
+        );
+        storage.load.mockRestore();
     });
 
     test('when hash change happens, the project data state is changed', () => {
@@ -42,10 +47,11 @@ describe('ProjectLoaderHOC', () => {
         const WrappedComponent = ProjectLoaderHOC(Component);
         window.location.hash = '';
         const mounted = mount(<WrappedComponent />);
-        const before = mounted.find('div').text();
-        ProjectLoader.load = jest.fn((id, cb) => cb(null, id));
-        window.location.hash = `#winning`;
+        expect(mounted.state().projectId).toEqual(0);
+        storage.load = jest.fn((type, id) => Promise.resolve({data: id}));
+        window.location.hash = '#winning';
         mounted.instance().updateProject();
-        expect(mounted.find('div').text()).not.toEqual(before);
+        expect(mounted.state().projectId).toEqual('winning');
+        storage.load.mockRestore();
     });
 });