如何在Grails中测试文件上传

Question

我有一个控制器，它接受一个文件作为参数的一部分。我想知道如何测试这个？

我的控制器操作：

def save() { 
    def colorInstance = new Color(params.color) 
    CommonsMultipartFile file = request.getFile('color.filename') 
    fileUploadService.upload(colorInstance, file, "foldername") 
    if (requestInstance.save(flush: true)) { 
    withFormat { 
     html {redirect(action: "list") } 
     js {render "test"} 
    } 
    } 
} 

我已经开始像这样的东西：...

import org.junit.Before 
import grails.test.mixin.Mock 
import grails.test.mixin.TestFor 

@TestFor(ColorController) 
@Mock(Color) 
class ColorControllerTests { 

    @Before 
    void setUp() { 
     controller.fileUploadService = new FileUploadService 
    } 
} 

问题

• 我无法弄清楚如何测试文件上传的CommonsMultipartFile。
• 此外，此测试用例将位于unit测试文件夹中。我该如何执行它？

Answer 1

由于文件上传过程中请求为multipart，实际的请求servlet为MultipartHttpServletRequest。对于单元测试用例，mock与request相同，并将其用于controller。在成功嘲笑你应该能够addFile在测试和getFile在action。

import org.junit.Before 
import grails.test.mixin.Mock 
import grails.test.mixin.TestFor 

@TestFor(ColorController) 
@Mock(Color) 
class ColorControllerTests { 

    @Before 
    void setUp() { 
     controller.fileUploadService = new FileUploadService 
     //Mock MultipartHttpServletRequest somethign like below 
     controller.metaClass.request = mockFor(MultipartHttpServletRequest).createMock() 
    } 

    void testFileUpload(){ 
     //Add a mock multipart file to request 
     controller.request.addFile(new MockMultipartFile('myFile', 'IronMan3.jpg', 'image/jpeg', "1234567" as byte[])) 

     //call the controller action 
     //assert response 
    } 
} 

Answer 2

接受的答案不适用于我。下面的代码所做的：

import org.junit.Before 
import grails.test.mixin.Mock 
import grails.test.mixin.TestFor 
import org.springframework.mock.web.MockMultipartHttpServletRequest 
import org.springframework.mock.web.MockMultipartFile 

@TestFor(ColorController) 
class ColorControllerTests { 

    def mockRequest 

    @Before 
    void setUp() { 
     mockRequest = new MockMultipartHttpServletRequest() 
     controller.metaClass.request = mockRequest 

     // your service here 
     controller.fileUploadService = new FileUploadService 
    } 

    void testFileUpload(){ 
     //Add a mock multipart file to request 
     mockRequest.addFile(new MockMultipartFile('myFile', 'IronMan3.jpg', 'image/jpeg', "1234567" as byte[])) 

     //call the controller action 
     //assert response 
    } 
} 

Answer 3

我使用Grails 2.4

，你可以简单地使用GrailsMockMultipartFile和request.addFile方法在你的单元测试。

此代码的工作中，Grails 2.4.4，与斯波克测试框架：

控制器侧：

class FileUploadController { 

    def upload() { 
     def multipartFile = request.getFile('requestParamName') 
     if (multipartFile.empty) { 
      flash.message = 'Error: file cannot be empty' 
      render(view: 'upload') 
      return 
     } 

     // do something now with your file 
    } 
} 

单元测试方面：

import grails.test.mixin.TestFor 
import org.codehaus.groovy.grails.plugins.testing.GrailsMockMultipartFile 
import spock.lang.Specification 

@TestFor(FileUploadController) 
class FileUploadControllerSpec extends Specification { 

    void "upload should add flash error message if empty file in request"() { 
     given: 
     def multipartFile = new GrailsMockMultipartFile('requestParamName', 'someExcelFile.xls', 'application/vnd.ms-excel', new byte[0]) 
     request.addFile(multipartFile) 

     when: 
     controller.upload() 

     then: 
     assertEquals('Error: file cannot be empty', flash.message) 
    } 

}