[WIP] test: add handler tests in paper service

api/handler/api/paper_service_test.go

@@ -0,0 +1,101 @@
+/*
+Copyright 2024 The west2-online Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package api
+
+import (
+	"context"
+	"errors"
+	"github.com/bytedance/mockey"
+	"github.com/cloudwego/hertz/pkg/app"
+	"github.com/cloudwego/hertz/pkg/common/config"
+	"github.com/cloudwego/hertz/pkg/common/ut"
+	"github.com/cloudwego/hertz/pkg/protocol/consts"
+	"github.com/cloudwego/hertz/pkg/route"
+	"github.com/stretchr/testify/assert"
+	"github.com/west2-online/fzuhelper-server/api/model/api"
+	"github.com/west2-online/fzuhelper-server/api/pack"
+	"github.com/west2-online/fzuhelper-server/api/rpc"
+	"github.com/west2-online/fzuhelper-server/kitex_gen/paper"
+	"net/http"
+	"testing"
+)
+
+func TestGetDownloadUrl(t *testing.T) {
+
+	type TestCase struct {
+		ExpectedError  bool
+		ExpectedResult interface{}
+		FilePath       string
+	}
+
+	testCases := []TestCase{
+		{
+			ExpectedError:  false,
+			ExpectedResult: `{"code":"10000","message":"Success","data":{"url":"file://url"}}`,
+			FilePath:       "url",
+		},
+		{
+			ExpectedError:  true,
+			ExpectedResult: `{"code":"50001","message":"GetDownloadUrlRPC: RPC called failed: wrong filepath"}`,
+			FilePath:       "",
+		},
+	}
+
+	router := route.NewEngine(&config.Options{})
+
+	router.GET("/api/v1/paper/download", func(ctx context.Context, c *app.RequestContext) {
+
+		filepath := c.DefaultQuery("filepath", "/")
+		mockey.Mock(rpc.GetDownloadUrlRPC).To(func(ctx context.Context, req *paper.GetDownloadUrlRequest) (url string, err error) {
+			// 因为handler不能重复注册，无法添加一个TestError(bool)来作为错误的判断，只能先用filepath为空暂代了
+			if filepath == "" {
+				return "", errors.New("GetDownloadUrlRPC: RPC called failed: wrong filepath")
+			}
+			return "file://" + req.Filepath, nil
+		}).Build()
+		defer mockey.UnPatchAll()
+
+		url, err := rpc.GetDownloadUrlRPC(ctx, &paper.GetDownloadUrlRequest{
+			Filepath: filepath,
+		})
+		if err != nil {
+			pack.RespError(c, err)
+			return
+		}
+
+		resp := new(api.GetDownloadUrlResponse)
+		resp.URL = url
+
+		pack.RespData(c, resp)
+	})
+	for _, tc := range testCases {
+		url := "/api/v1/paper/download" + "?filepath=" + tc.FilePath
+
+		resp := ut.PerformRequest(router, consts.MethodGet, url, nil)
+
+		if tc.ExpectedError {
+			assert.Equal(t, http.StatusOK, resp.Code)
+			assert.Equal(t, tc.ExpectedResult, string(resp.Result().Body()))
+
+		} else {
+			assert.Equal(t, http.StatusOK, resp.Code)
+			assert.Equal(t, tc.ExpectedResult, string(resp.Result().Body()))
+		}
+
+	}
+
+}