multi: repleace ioutil.ReadFile

tls_manager_test.go

@@ -12,6 +12,7 @@ import (
 	"io/ioutil"
 	"math/big"
 	"net"
+	"os"
 	"testing"
 	"time"
 
@@ -199,7 +200,7 @@ func TestGenerateEphemeralCert(t *testing.T) {
 	keyBytes, err := tlsManager.loadEphemeralCertificate()
 	require.NoError(t, err, "failed to generate new certificate")
 
-	certBytes, err := ioutil.ReadFile(tmpCertPath)
+	certBytes, err := os.ReadFile(tmpCertPath)
 	require.NoError(t, err)
 
 	tlsr, err := cert.NewTLSReloader(certBytes, keyBytes)
@@ -207,15 +208,15 @@ func TestGenerateEphemeralCert(t *testing.T) {
 	tlsManager.tlsReloader = tlsr
 
 	// Make sure .tmp file is created at the tmp cert path.
-	_, err = ioutil.ReadFile(tmpCertPath)
+	_, err = os.ReadFile(tmpCertPath)
 	require.NoError(t, err, "couldn't find temp cert file")
 
 	// But no key should be stored.
-	_, err = ioutil.ReadFile(cfg.TLSKeyPath)
+	_, err = os.ReadFile(cfg.TLSKeyPath)
 	require.Error(t, err, "shouldn't have found file")
 
 	// And no permanent cert file should be stored.
-	_, err = ioutil.ReadFile(cfg.TLSCertPath)
+	_, err = os.ReadFile(cfg.TLSCertPath)
 	require.Error(t, err, "shouldn't have found a permanent cert file")
 
 	// Now test that when we reload the certificate it generates the new