Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-gui/test/unit/util/hash-project-loader-hoc.test.jsx

@@ -0,0 +1,81 @@
+import React from 'react';
+import configureStore from 'redux-mock-store';
+import {mount} from 'enzyme';
+
+import HashParserHOC from '../../../src/lib/hash-parser-hoc.jsx';
+
+jest.mock('react-ga');
+
+describe('HashParserHOC', () => {
+    const mockStore = configureStore();
+    let store;
+
+    beforeEach(() => {
+        store = mockStore({
+            scratchGui: {
+                projectState: {}
+            }
+        });
+    });
+
+    test('when there is a hash, it passes the hash as projectId', () => {
+        const Component = ({projectId}) => <div>{projectId}</div>;
+        const WrappedComponent = HashParserHOC(Component);
+        window.location.hash = '#1234567';
+        const mockSetProjectIdFunc = jest.fn();
+        mount(
+            <WrappedComponent
+                setProjectId={mockSetProjectIdFunc}
+                store={store}
+            />
+        );
+        expect(mockSetProjectIdFunc.mock.calls[0][0]).toBe('1234567');
+    });
+
+    test('when there is no hash, it passes 0 as the projectId', () => {
+        const Component = ({projectId}) => <div>{projectId}</div>;
+        const WrappedComponent = HashParserHOC(Component);
+        window.location.hash = '';
+        const mockSetProjectIdFunc = jest.fn();
+        mount(
+            <WrappedComponent
+                setProjectId={mockSetProjectIdFunc}
+                store={store}
+            />
+        );
+        expect(mockSetProjectIdFunc.mock.calls[0][0]).toBe('0');
+    });
+
+    test('when the hash is not a number, it passes 0 as projectId', () => {
+        const Component = ({projectId}) => <div>{projectId}</div>;
+        const WrappedComponent = HashParserHOC(Component);
+        window.location.hash = '#winning';
+        const mockSetProjectIdFunc = jest.fn();
+        mount(
+            <WrappedComponent
+                setProjectId={mockSetProjectIdFunc}
+                store={store}
+            />
+        );
+        expect(mockSetProjectIdFunc.mock.calls[0][0]).toBe('0');
+    });
+
+    test('when hash change happens, the projectId state is changed', () => {
+        const Component = ({projectId}) => <div>{projectId}</div>;
+        const WrappedComponent = HashParserHOC(Component);
+        window.location.hash = '';
+        const mockSetProjectIdFunc = jest.fn();
+        const mounted = mount(
+            <WrappedComponent
+                setProjectId={mockSetProjectIdFunc}
+                store={store}
+            />
+        );
+        window.location.hash = '#1234567';
+        mounted
+            .childAt(0)
+            .instance()
+            .handleHashChange();
+        expect(mockSetProjectIdFunc.mock.calls.length).toBe(2);
+    });
+});