我正在编写一个web应用程序,它将向第三方服务发送请求以进行一些计算,并将其发送回前端。
以下是我试图编写的测试的相关部分。
client.go
func (c *ClientResponse) GetBankAccounts() (*BankAccounts, *RequestError) {
req, _ := http.NewRequest("GET", app.BuildUrl("bank_accounts"), nil)
params := req.URL.Query()
params.Add("view", "standard_bank_accounts")
req.URL.RawQuery = params.Encode()
c.ClientDo(req)
if c.Err.Errors != nil {
return nil, c.Err
}
bankAccounts := new(BankAccounts)
defer c.Response.Body.Close()
if err := json.NewDecoder(c.Response.Body).Decode(bankAccounts); err != nil {
return nil, &RequestError{Errors: &Errors{Error{Message: "failed to decode Bank Account response body"}}}
}
return bankAccounts, nil
}
帮帮忙
type ClientResponse struct {
Response *http.Response
Err *RequestError
}
type ClientI interface {
ClintDo(req *http.Request) (*http.Response, *RequestError)
}
func (c *ClientResponse) ClientDo(req *http.Request) {
//Do some authentication with third-party service
errResp := *new(RequestError)
client := http.Client{}
resp, err := client.Do(req)
if err != nil {
// Here I'm repourposing the third-party service's error response mapping
errResp.Errors.Error.Message = "internal server error. failed create client.Do"
}
c.Response = resp
c.Err = &errResp
}
我只想测试一下
GetBankAccounts()
方法,所以我想存根
ClientDo
,但我不知道该怎么做。以下是到目前为止我的测试用例。
client_test.go
type StubClientI interface {
ClintDo(req *http.Request) (*http.Response, *RequestError)
}
type StubClientResponse struct {}
func (c *StubClientResponse) ClientDo(req *http.Request) (*http.Response, *RequestError) {
return nil, nil
}
func TestGetBankAccounts(t *testing.T) {
cr := new(ClientResponse)
accounts, err := cr.GetBankAccounts()
if err != nil {
t.Fatal(err.Errors)
}
t.Log(accounts)
}
这个
ClintDo
仍指向实际方法
帮帮忙
,我如何在测试中使用on?
更新
:
我还尝试了以下操作,但也不起作用,它仍然会将请求发送到实际的第三方服务。
client_test.go
func TestGetBankAccounts(t *testing.T) {
mux := http.NewServeMux()
mux.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, toJson(append(BankAccounts{}.BankAccounts, BankAccount{
Url: "https://foo.bar/v2/bank_accounts/1234",
Name: "Test Bank",
})))
}))
server := httptest.NewServer(mux)
cr := new(ClientResponse)
cr.Client = server.Client()
accounts, err := cr.GetBankAccounts()
if err != nil {
t.Fatal(err.Errors)
}
t.Log(accounts)
}
帮帮忙
type ClientResponse struct {
Client *http.Client
Response *http.Response
Err *RequestError
}
type ClientI interface {
ClintDo(req *http.Request) (*http.Response, *RequestError)
}
func (c *ClientResponse) ClientDo(req *http.Request) {
//Do some authentication with third-party service
errResp := *new(RequestError)
client := c.Client
resp, err := client.Do(req)
if err != nil {
// Here I'm repourposing the third-party service's error response mapping
errResp.Errors.Error.Message = "internal server error. failed create client.Do"
}
c.Response = resp
c.Err = &errResp
}
更新2
我能够从@dm03514的答案中取得一些进展,但不幸的是,现在我在测试中遇到了nil指针异常,但在实际代码中没有。
client.go
func (c *ClientResponse) GetBankAccounts() (*BankAccounts, *RequestError) {
req, _ := http.NewRequest("GET", app.BuildUrl("bank_accounts"), nil)
params := req.URL.Query()
params.Add("view", "standard_bank_accounts")
req.URL.RawQuery = params.Encode()
//cr := new(ClientResponse)
c.HTTPDoer.ClientDo(req)
// Panic occurs here
if c.Err.Errors != nil {
return nil, c.Err
}
bankAccounts := new(BankAccounts)
defer c.Response.Body.Close()
if err := json.NewDecoder(c.Response.Body).Decode(bankAccounts); err != nil {
return nil, &RequestError{Errors: &Errors{Error{Message: "failed to decode Bank Account response body"}}}
}
return bankAccounts, nil
}
帮帮忙
type ClientResponse struct {
Response *http.Response
Err *RequestError
HTTPDoer HTTPDoer
}
type HTTPDoer interface {
//Do(req *http.Request) (*http.Response, *RequestError)
ClientDo(req *http.Request)
}
type ClientI interface {
}
func (c *ClientResponse) ClientDo(req *http.Request) {
// This method hasn't changed
....
}
client_test.go
type StubDoer struct {
*ClientResponse
}
func (s *StubDoer) ClientDo(req *http.Request) {
s.Response = &http.Response{
StatusCode: 200,
Body: nil,
}
s.Err = nil
}
func TestGetBankAccounts(t *testing.T) {
sd := new(StubDoer)
cr := new(ClientResponse)
cr.HTTPDoer = HTTPDoer(sd)
accounts, err := cr.GetBankAccounts()
if err != nil {
t.Fatal(err.Errors)
}
t.Log(accounts)
}
=== RUN TestGetBankAccounts
--- FAIL: TestGetBankAccounts (0.00s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x12aae69]
