open-wc/packages/import-maps-resolve/test/parsing-scope-keys.test.js

import { expectScopes } from './helpers/parsing.js';

describe('Relative URL scope keys', () => {
  it('should work with no prefix', () => {
    expectScopes(['foo'], 'https://base.example/path1/path2/path3', [
      'https://base.example/path1/path2/foo',
    ]);
  });

  it('should work with ./, ../, and / prefixes', () => {
    expectScopes(['./foo', '../foo', '/foo'], 'https://base.example/path1/path2/path3', [
      'https://base.example/path1/path2/foo',
      'https://base.example/path1/foo',
      'https://base.example/foo',
    ]);
  });

  it('should work with /s, ?s, and #s', () => {
    expectScopes(['foo/bar?baz#qux'], 'https://base.example/path1/path2/path3', [
      'https://base.example/path1/path2/foo/bar?baz#qux',
    ]);
  });

  it('should work with an empty string scope key', () => {
    expectScopes([''], 'https://base.example/path1/path2/path3', [
      'https://base.example/path1/path2/path3',
    ]);
  });

  it('should work with / suffixes', () => {
    expectScopes(
      ['foo/', './foo/', '../foo/', '/foo/', '/foo//'],
      'https://base.example/path1/path2/path3',
      [
        'https://base.example/path1/path2/foo/',
        'https://base.example/path1/path2/foo/',
        'https://base.example/path1/foo/',
        'https://base.example/foo/',
        'https://base.example/foo//',
      ],
    );
  });

  it('should deduplicate based on URL parsing rules', () => {
    expectScopes(['foo/\\', 'foo//', 'foo\\\\'], 'https://base.example/path1/path2/path3', [
      'https://base.example/path1/path2/foo//',
    ]);
  });
});

describe('Absolute URL scope keys', () => {
  it('should only accept absolute URL scope keys with fetch schemes', () => {
    expectScopes(
      [
        'about:good',
        'blob:good',
        'data:good',
        'file:///good',
        'filesystem:good',
        'http://good/',
        'https://good/',
        'ftp://good/',
        'import:bad',
        'mailto:bad',
        // eslint-disable-next-line no-script-url
        'javascript:bad',
        'wss:ba',
      ],
      'https://base.example/path1/path2/path3',
      [
        'about:good',
        'blob:good',
        'data:good',
        'file:///good',
        'filesystem:good',
        'http://good/',
        'https://good/',
        'ftp://good/',
      ],
      [
        'Invalid scope "import:bad". Scope URLs must have a fetch scheme.',
        'Invalid scope "mailto:bad". Scope URLs must have a fetch scheme.',
        'Invalid scope "javascript:bad". Scope URLs must have a fetch scheme.',
        'Invalid scope "wss://ba/". Scope URLs must have a fetch scheme.',
      ],
    );
  });

  it('should parse absolute URL scope keys, ignoring unparseable ones', () => {
    expectScopes(
      [
        'https://ex ample.org/',
        'https://example.com:demo',
        'http://[www.example.com]/',
        'https:example.org',
        'https://///example.com///',
        'https://example.net',
        'https://ex%41mple.com/foo/',
        'https://example.com/%41',
      ],
      'https://base.example/path1/path2/path3',
      [
        'https://base.example/path1/path2/example.org', // tricky case! remember we have a base URL
        'https://example.com///',
        'https://example.net/',
        'https://example.com/foo/',
        'https://example.com/%41',
      ],
    );
  });
});