github.com/code-reading/golang@v0.0.0-20220303082512-ba5bc0e589a3/go/src/net/netgo_unix_test.go (about)

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build (!cgo || netgo) && (darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris)
     6  // +build !cgo netgo
     7  // +build darwin dragonfly freebsd linux netbsd openbsd solaris
     8  
     9  package net
    10  
    11  import (
    12  	"context"
    13  	"testing"
    14  )
    15  
    16  func TestGoLookupIP(t *testing.T) {
    17  	defer dnsWaitGroup.Wait()
    18  	host := "localhost"
    19  	ctx := context.Background()
    20  	_, err, ok := cgoLookupIP(ctx, "ip", host)
    21  	if ok {
    22  		t.Errorf("cgoLookupIP must be a placeholder")
    23  	}
    24  	if err != nil {
    25  		t.Error(err)
    26  	}
    27  	if _, err := DefaultResolver.goLookupIP(ctx, "ip", host); err != nil {
    28  		t.Error(err)
    29  	}
    30  }