go/src/net/main_conf_test.go

func allResolvers(t *testing.T, f func(t *testing.T)) { … }

// forceGoDNS forces the resolver configuration to use the pure Go resolver
// and returns a fixup function to restore the old settings.
func forceGoDNS() func() { … }

// forceCgoDNS forces the resolver configuration to use the cgo resolver
// and returns a fixup function to restore the old settings.
func forceCgoDNS() func() { … }

func TestForceCgoDNS(t *testing.T) { … }

func TestForceGoDNS(t *testing.T) { … }