superset-frontend/src/utils/getBootstrapData.test.ts

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 * distributed with this work for additional information
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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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import { DEFAULT_BOOTSTRAP_DATA } from '../constants';

describe('getBootstrapData and helpers', () => {
  afterEach(() => {
    // Clean up the DOM
    document.body.innerHTML = '';
  });

  describe('getBootstrapData()', () => {
    it('should return DEFAULT_BOOTSTRAP_DATA when #app element does not exist', async () => {
      // Ensure no #app element exists.
      document.body.innerHTML = '';

      // Reset module to clear cachedBootstrapData
      jest.resetModules();
      const { default: getBootstrapData } = await import('./getBootstrapData');
      const bootstrapData = getBootstrapData();
      expect(bootstrapData).toEqual(DEFAULT_BOOTSTRAP_DATA);
    });

    it('should return parsed bootstrap data when #app element has valid data attribute', async () => {
      // Set up the fake #app element
      const customData = {
        common: {
          application_root: '/custom-app/',
          static_assets_prefix: '/custom-static/',
        },
      };
      document.body.innerHTML = `<div id="app" data-bootstrap='${JSON.stringify(customData)}'></div>`;

      // Reset modules and re-import the module so that cachedBootstrapData is clear.
      jest.resetModules();
      const { default: getBootstrapData } = await import('./getBootstrapData');
      const bootstrapData = getBootstrapData();
      expect(bootstrapData).toEqual(customData);
    });
  });

  describe('Helper functions applicationRoot and staticAssetsPrefix', () => {
    it('should return values without trailing slashes', async () => {
      // Setup a fake #app element with data-bootstrap attribute.
      const customData = {
        common: {
          application_root: '/custom-app/',
          static_assets_prefix: '/custom-static/',
        },
      };
      document.body.innerHTML = `<div id="app" data-bootstrap='${JSON.stringify(customData)}'></div>`;

      // Reset modules and re-import the module so that cachedBootstrapData is clear.
      jest.resetModules();
      const {
        default: getBootstrapData,
        applicationRoot,
        staticAssetsPrefix,
      } = await import('./getBootstrapData');

      // Call getBootstrapData to ensure caching is done.
      getBootstrapData();

      // The helpers should remove the trailing slash.
      expect(applicationRoot()).toEqual('/custom-app');
      expect(staticAssetsPrefix()).toEqual('/custom-static');
    });

    it('should return defaults without trailing slashes when #app element is missing', async () => {
      // Ensure no #app element exists.
      document.body.innerHTML = '';

      // Reset module to clear cachedBootstrapData and re-run computed values.
      jest.resetModules();
      const {
        default: getBootstrapData,
        applicationRoot,
        staticAssetsPrefix,
      } = await import('./getBootstrapData');

      // Call getBootstrapData to ensure caching is done.
      getBootstrapData();

      // Defaults from DEFAULT_BOOTSTRAP_DATA with trailing slashes removed.
      const expectedAppRoot =
        DEFAULT_BOOTSTRAP_DATA.common.application_root.replace(/\/$/, '');
      const expectedStaticPrefix =
        DEFAULT_BOOTSTRAP_DATA.common.static_assets_prefix.replace(/\/$/, '');

      expect(applicationRoot()).toEqual(expectedAppRoot);
      expect(staticAssetsPrefix()).toEqual(expectedStaticPrefix);
    });

    it('should defaults without trailing slashes when #app element does not include application_root or static_assets_prefix', async () => {
      // Set up the fake #app element
      const customData = {
        common: {
          my_custom_property: 'custom-value',
        },
      };
      document.body.innerHTML = `<div id="app" data-bootstrap='${JSON.stringify(customData)}'></div>`;

      // Reset modules and re-import the module so that cachedBootstrapData is clear.
      jest.resetModules();
      const {
        default: getBootstrapData,
        applicationRoot,
        staticAssetsPrefix,
      } = await import('./getBootstrapData');
      const bootstrapData = getBootstrapData();
      expect(bootstrapData).toEqual(customData);
      const expectedAppRoot =
        DEFAULT_BOOTSTRAP_DATA.common.application_root.replace(/\/$/, '');
      const expectedStaticPrefix =
        DEFAULT_BOOTSTRAP_DATA.common.static_assets_prefix.replace(/\/$/, '');

      expect(applicationRoot()).toEqual(expectedAppRoot);
      expect(staticAssetsPrefix()).toEqual(expectedStaticPrefix);
    });
  });
});