调整requests关于上传文件的请求，支持文件为空时，调用请求进行上传操作

interface/gitlink/projects/issues/test_new_issue.yaml

@@ -26,7 +26,7 @@ case_info:
     description: ${generate_paragraph}
     branch_name: master
     status_id: 1
-    priority_id: ${random.choice([1,2,3,4,5])}
+    priority_id: ${random.choice([1,2,3,4])}
     milestone_id:
     issue_tag_ids:
     assigner_ids:

interface/gitlink/projects/test_upload_files.yaml

@@ -12,20 +12,84 @@ case_common:
 case_info:
 -
   id: gitlink_upload_file_01
-  title: 测试文件上传
+  title: 正常上传文件
   severity:
-  run: True
+  run: true
   url: /api/attachments.json
   method: POST
   headers:
     cookies: ${cookie}
+    Content-Type: application/json; charset=utf-8;
   cookies:
   request_type: file
   payload:
   files: TOC出库订单导入模板(2).xlsx
   assert_response:
       status_code: 200
+      asserFileName:
+        message: 断言接口返回的filename
+        expect_value: TOC出库订单导入模板(2).xlsx
+        assert_type: ==
+        type_jsonpath: $.title
   assert_sql:
   extract:
     type_jsonpath:
       attachment_id: $.id
+
+-
+  id: gitlink_upload_file_02
+  title: file为空，文件上传失败
+  severity:
+  run: true
+  url: /api/attachments.json
+  method: POST
+  headers:
+    cookies: ${cookie}
+    Content-Type: application/json; charset=utf-8;
+  cookies:
+  request_type: file
+  payload:
+  files:
+  assert_response:
+      status_code: 200
+      assertStatus:
+        message: 断言接口返回的status
+        expect_value: -1
+        assert_type: ==
+        type_jsonpath: $.status
+      assertMessage:
+        message: 断言接口返回的message
+        expect_value: 未上传文件
+        assert_type: ==
+        type_jsonpath: $.message
+  assert_sql:
+  extract:
+
+# 由于requests采用的是session方式，fixture执行了login后会产生cookies， session会记录cookies。因此下述用例虽然没用传登录cookies,但是实际有，会上传成功。暂时还没想好如何解决这一问题
+-
+  id: gitlink_upload_file_03
+  title: 无用户登录信息上传文件，提示用户先登录
+  severity:
+  run: False
+  url: /api/attachments.json
+  method: POST
+  headers:
+    Content-Type: application/json; charset=utf-8;
+  cookies:
+  request_type: file
+  payload:
+  files: TOC出库订单导入模板(2).xlsx
+  assert_response:
+      status_code: 200
+      assertStatus:
+        message: 断言接口返回的status
+        expect_value: 401
+        assert_type: ==
+        type_jsonpath: $.status
+      assertMessage:
+        message: 断言接口返回的message
+        expect_value: 请登录后再操作
+        assert_type: ==
+        type_jsonpath: $.message
+  assert_sql:
+  extract: