tests: additional remaining errors.Is

Signed-off-by: redwrasse <mail@redwrasse.io>

tests/integration/clientv3/maintenance_test.go

@@ -304,7 +304,7 @@ func testMaintenanceSnapshotErrorInflight(t *testing.T, snapshot func(context.Co
 		close(donec)
 	}()
 	_, err = io.Copy(io.Discard, rc1)
-	if err != nil && err != context.Canceled {
+	if err != nil && !errors.Is(err, context.Canceled) {
 		t.Errorf("expected %v, got %v", context.Canceled, err)
 	}
 	<-donec

tests/integration/clientv3/watch_test.go

@@ -16,6 +16,7 @@ package clientv3test
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math/rand"
 	"reflect"
@@ -809,7 +810,7 @@ func TestWatchAfterClose(t *testing.T) {
 	donec := make(chan struct{})
 	go func() {
 		cli.Watch(context.TODO(), "foo")
-		if err := cli.Close(); err != nil && err != context.Canceled {
+		if err := cli.Close(); err != nil && !errors.Is(err, context.Canceled) {
 			t.Errorf("expected %v, got %v", context.Canceled, err)
 		}
 		close(donec)

tests/integration/v3_grpc_test.go

@@ -1562,7 +1562,7 @@ func TestTLSGRPCRejectInsecureClient(t *testing.T) {
 	// nil out TLS field so client will use an insecure connection
 	clus.Members[0].ClientTLSInfo = nil
 	client, err := integration.NewClientV3(clus.Members[0])
-	if err != nil && err != context.DeadlineExceeded {
+	if err != nil && !errors.Is(err, context.DeadlineExceeded) {
 		t.Fatalf("unexpected error (%v)", err)
 	} else if client == nil {
 		// Ideally, no client would be returned. However, grpc will

tests/integration/v3_lease_test.go

@@ -1086,7 +1086,7 @@ func testV3LeaseTimeToLiveWithLeaderChanged(t *testing.T, fpName string) {
 	require.NoError(t, gofail.Enable(fpName, `sleep("3s")`))
 	t.Cleanup(func() {
 		terr := gofail.Disable(fpName)
-		if terr != nil && terr != gofail.ErrDisabled {
+		if terr != nil && !errors.Is(terr, gofail.ErrDisabled) {
 			t.Fatalf("failed to disable %s: %v", fpName, terr)
 		}
 	})