Function testAsset

packages/swagger/src/swagger-controller.spec.ts:348–381

(
    methodName: 'swaggerUi'|'swaggerUiBundle'|'swaggerUiStandalonePreset',
    filename: string,
    contentType: string
  )

  });

  function testAsset(
    methodName: 'swaggerUi'|'swaggerUiBundle'|'swaggerUiStandalonePreset',
    filename: string,
    contentType: string
  ): void {
    describe(`has a "${methodName}" method that`, () => {

      it(`should handle requests at GET /${filename}.`, () => {
        strictEqual(getHttpMethod(ConcreteClass, methodName), 'GET');
        strictEqual(getPath(ConcreteClass, methodName), `/${filename}`);
      });

      it(`should return an HttpResponseOK whose content is the ${filename} asset.`, async () => {
        const controller = new ConcreteClass();
        const response = await controller[methodName]();

        if (!isHttpResponseOK(response)) {
          throw new Error(`SwaggerController.${methodName} should return an HttpResponseOK instance.`);
        }

        strictEqual(response.getHeader('Content-Type'), contentType);
        strictEqual(response.stream, true);

        const filePath = `../../node_modules/swagger-ui-dist/${filename}`;
        const stats = await stat(filePath);
        strictEqual(response.getHeader('Content-Length'), stats.size.toString());

        const content = await streamToBuffer(response.body);
        const expected = readFileSync(filePath);
        ok(expected.equals(content));
      });

    });
  }

  testAsset('swaggerUi', 'swagger-ui.css', 'text/css');
  testAsset('swaggerUiBundle', 'swagger-ui-bundle.js', 'application/javascript');