Spring MVC - MockMultipartFile Examples

    @Test
    public void testController() throws Exception {
        MockMultipartFile mockFile = new MockMultipartFile(
                "user-file", "test.txt",
                null, "test data".getBytes());

        this.mockMvc.perform(
                    MockMvcRequestBuilders.fileUpload("/upload")
                                          .file(mockFile))
                    .andExpect(status().isOk())
                    .andExpect(model().attribute(
                            "msg",
                            "File has been uploaded. "
                                    + "name: test.txt "
                                    + "content: test data"));

    }