grid-table-editor/apps/web/src/tests/jest/script-module-init.test.js at c50676434d9b305db57a939d873a551d3f0bdcbf · eviltester/grid-table-editor · GitHub

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import { jest } from '@jest/globals';
import { JSDOM } from 'jsdom';

describe('script module initialization', () => {
  afterEach(() => {
    jest.resetModules();
    jest.restoreAllMocks();
    delete global.document;
    delete global.window;
  });

  test('can be imported when document is undefined', async () => {
    const originalDocument = global.document;
    delete global.document;

    const importScriptModule = async () => {
      await jest.isolateModulesAsync(async () => {
        await import('../../../../../packages/core-ui/js/script.js');
      });
    };

    await expect(importScriptModule()).resolves.not.toThrow();

    global.document = originalDocument;
  });

  test('registers DOMContentLoaded handler that bootstraps the app with default dependencies', async () => {
    const dom = new JSDOM(`<!doctype html><html><body>
      <div id="main-grid-view"></div>
      <div id="import-export-controls"></div>
      <div id="testDataGeneratorContainer"></div>
    </body></html>`);
    global.window = dom.window;
    global.document = dom.window.document;

    const addEventListenerSpy = jest.spyOn(global.document, 'addEventListener');
    const ensureGridLibraryLoaded = jest.fn(() => Promise.resolve());
    const renderTextFromGrid = jest.fn();
    const setFileFormatType = jest.fn();
    const setOptionsViewForFormatType = jest.fn();
    const setExporter = jest.fn();
    const setImporter = jest.fn();
    const createImportExportWorkspaceComponent = jest.fn(() => ({
      setExporter,
      setImporter,
      renderTextFromGrid,
      setFileFormatType,
      setOptionsViewForFormatType,
    }));
    const mountTestDataGenerationPanel = jest.fn();
    const setTimeoutSpy = jest.spyOn(global, 'setTimeout').mockImplementation(() => 0);
    const createDataGridComponent = jest.fn(() => ({
      getGridExtras() {
        return gridExtras;
      },
      sizeColumnsToFit() {},
    }));
    const gridExtras = {
      clearGrid: jest.fn(),
      setGridFromGenericDataTable: jest.fn(),
      getGridAsGenericDataTable: jest.fn(() => ({ getHeaders: () => [] })),
      getHeadersFromGrid: jest.fn(() => []),
    };

    jest.unstable_mockModule('@anywaydata/core/grid/importer.js', () => ({
      Importer: class Importer {
        constructor(extras) {
          this.extras = extras;
        }
      },
    }));
    jest.unstable_mockModule('@anywaydata/core/grid/exporter.js', () => ({
      Exporter: class Exporter {
        constructor(extras) {
          this.extras = extras;
        }
      },
    }));
    jest.unstable_mockModule(
      '../../../../../packages/core-ui/js/gui_components/app/test-data-grid/controller/test-data-grid-controller.js',
      () => ({
        mountTestDataGenerationPanel,
      })
    );
    jest.unstable_mockModule('../../../../../packages/core-ui/js/gui_components/data-grid-editor/index.js', () => ({
      createDataGridComponent,
    }));
    jest.unstable_mockModule(
      '../../../../../packages/core-ui/js/gui_components/data-grid-editor/grid-library-loader.js',
      () => ({
        ensureGridLibraryLoaded,
      })
    );
    jest.unstable_mockModule(
      '../../../../../packages/core-ui/js/gui_components/app/import-export-workspace/index.js',
      () => ({
        createImportExportWorkspaceComponent,
      })
    );

    let domContentLoadedHandler;
    addEventListenerSpy.mockImplementation((eventName, handler) => {
      if (eventName === 'DOMContentLoaded') {
        domContentLoadedHandler = handler;
      }
    });

    await jest.isolateModulesAsync(async () => {
      await import('../../../../../packages/core-ui/js/script.js');
    });

    if (domContentLoadedHandler) {
      await domContentLoadedHandler();
    }

    expect(ensureGridLibraryLoaded).toHaveBeenCalledWith({ document: global.document });
    expect(createDataGridComponent).toHaveBeenCalledWith({
      root: global.document.getElementById('main-grid-view'),
      documentObj: global.document,
      services: expect.objectContaining({
        TabulatorCtor: globalThis.Tabulator,
        GridExtensionClass: expect.any(Function),
        getPreviewExportFormats: expect.any(Function),
        previewAs: expect.any(Function),
        exportAs: expect.any(Function),
      }),
    });
    expect(createImportExportWorkspaceComponent).toHaveBeenCalledWith({
      root: global.document.getElementById('import-export-controls'),
      documentObj: global.document,
    });
    expect(setExporter).toHaveBeenCalledTimes(1);
    expect(setImporter).toHaveBeenCalledTimes(1);
    expect(renderTextFromGrid).toHaveBeenCalledTimes(1);
    expect(setFileFormatType).toHaveBeenCalledTimes(1);
    expect(setOptionsViewForFormatType).toHaveBeenCalledTimes(1);
    expect(mountTestDataGenerationPanel).toHaveBeenCalledWith(
      'testDataGeneratorContainer',
      expect.any(Object),
      expect.any(Object),
      gridExtras
    );
    expect(setTimeoutSpy).not.toHaveBeenCalledWith(expect.any(Function), 3000);

    dom.window.close();
  });
});