Golang chi router REST API的測試範例。
範例環境
- Go 1.17
- chi v5
範例測試一個帶路徑參數的API GET| /employee/{id}。
受測程式
GET| /employee/{id}的回應內容為路徑參數id。
main.go
package main
import (
"log"
"net/http"
"github.com/go-chi/chi/v5"
)
func main() {
http.ListenAndServe(":8080", NewRouter()) // start serve
}
func NewRouter() http.Handler {
router := chi.NewRouter() // create chi router
router.Get("/employee/{id}", HandHello()) // path param name "id"
return router
}
func HandHello() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
id := chi.URLParam(r, "id") // get path param {id}
log.Printf("path=%s\n", r.URL.Path)
log.Printf("id=%s", id)
w.Write([]byte(id))
}
}
測試程式
TestHello()測試GET| /employee/{id}。
main_test.go
package main
import (
"net/http"
"net/http/httptest"
"testing"
)
func TestHello(t *testing.T) {
srv := NewRouter() // create chi router
r := httptest.NewRequest("GET", "/employee/123", nil) // 建立一個http.Request請求
w := httptest.NewRecorder() // 建立一個ResponseRecorder其實作http.ResponseWriter，用來記錄response狀態
srv.ServeHTTP(w, r) // 傳入ReponseWriter及Request
expectedStatus := http.StatusOK // 預期HTTP回應狀態碼
expectedContent := "123" // 預期回應內容
statusCode := w.Result().StatusCode // 實際HTTP回應狀態碼
content := w.Body.String() // 實際HTTP回應內容
defer w.Result().Body.Close()
if statusCode != expectedStatus {
t.Errorf("expected code == %d, but %d", expectedStatus, statusCode)
}
if content != expectedContent {
t.Errorf("expected content == %s, but %s", expectedContent, content)
}
}
執行測試
在專案根目錄以命令列執行go test -v測試的結果如下。
~/../go-demo$ go test -v
=== RUN TestHello
2021/12/08 21:49:56 path=/employee/123
2021/12/08 21:49:56 id=123
--- PASS: TestHello (0.00s)
PASS
ok abc.com/demo 0.123s
參考github。
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