| // Copyright 2021 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // This file contains tests for the httpresponse checker. |
| |
| //go:build go1.18 |
| |
| package typeparams |
| |
| import ( |
| "log" |
| "net/http" |
| ) |
| |
| func badHTTPGet[T any](url string) { |
| res, err := http.Get(url) |
| defer res.Body.Close() // want "using res before checking for errors" |
| if err != nil { |
| log.Fatal(err) |
| } |
| } |
| |
| func mkClient[T any]() *T { |
| return nil |
| } |
| |
| func badClientHTTPGet() { |
| client := mkClient[http.Client]() |
| res, _ := client.Get("") |
| defer res.Body.Close() // want "using res before checking for errors" |
| } |
| |
| // User-defined type embedded "http.Client" |
| type S[P any] struct { |
| http.Client |
| } |
| |
| func unmatchedClientTypeName(client S[string]) { |
| res, _ := client.Get("") |
| defer res.Body.Close() // the name of client's type doesn't match "*http.Client" |
| } |
| |
| // User-defined Client type |
| type C[P any] interface { |
| Get(url string) (resp *P, err error) |
| } |
| |
| func userDefinedClientType(client C[http.Response]) { |
| resp, _ := client.Get("http://foo.com") |
| defer resp.Body.Close() // "client" is not of type "*http.Client" |
| } |