message: Add test for missing tsconfig.json
diff: @@ -17,6 +17,13 @@ describe('get default ts config', () => {
  getTSConfig.cache.clear();
  });
  + it('should supply empty config if no default tsconfig.json found', () => {
  + // there is no tsconfig file in that test module
  + ((path as any) as MockedPath).__setBaseDir('./tests/jestconfig-test');
  +
  + expect(() => getTSConfig(mockJestConfig('jestconfig-test'))).toBeDefined();
  + });
  +
  it('should correctly read tsconfig.json', () => {
  const result = getTSConfig(mockJestConfig(TEST_CASE));
  