@Test
public void testParseMultiPartFilesShouldReturnWithProcessingResultMsgWhenParameterIsNotFormField() throws IOException {

    //GIVEN
    String stringValue = "STRING_VALUE";
    given(fileItem.isFormField()).willReturn(false);
    given(fileItem.getName()).willReturn(stringValue);
    given(fileItem.getContentType()).willReturn(stringValue);
    given(fileItem.getFieldName()).willReturn(stringValue);
    given(fileItem.getInputStream()).willReturn(uploadedFileStream);
    given(multiPartFileProcessor.processUploadedFile(uploadedFileStream, stringValue, stringValue, stringValue)).willReturn(
            "processing result message");
    uploadedFiles.add(fileItem);
    //WHEN
    String actual = underTest.parseMultiPartFiles(uploadedFiles);
    //THEN
    assertEquals(actual, "processing result message");
}