t.Fatal(err)
			}

			// Create existing binary files
			if err := os.WriteFile(filepath.Join(cniBinDir, "istio-cni"), []byte{1, 2, 3}, 0o755); err != nil {
				t.Fatal(err)
			}

			// Create kubeconfig
			kubeConfigFilePath := filepath.Join(cniNetDir, "kubeconfig")
			if err := os.WriteFile(kubeConfigFilePath, []byte{1, 2, 3}, 0o755); err != nil {
				t.Fatal(err)
			}

			if err = validateFlags(); err != nil {
				return err
			}
			var reader io.Reader

			if inFilename == "-" {
				reader = os.Stdin
			} else {
				var in *os.File
				if in, err = os.Open(inFilename); err != nil {
					return err
				}
				reader = in
				defer func() {
					if errClose := in.Close(); errClose != nil {

	var reader io.ReadCloser
	warningsByFilename := map[string]validation.Warning{}

	processFile := func(path string) {
		var err error
		if path == "-" {
			reader = io.NopCloser(os.Stdin)
		} else {
			reader, err = os.Open(path)
			if err != nil {
				errs = multierror.Append(errs, fmt.Errorf("cannot read file %q: %v", path, err))
				return
			}
		}

	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	return fallback
}

func setEnv(key, value string, t *testing.T) {
	t.Helper()
	err := os.Setenv(key, value)
	if err != nil {
		t.Fatalf("Couldn't set environment variable, err: %v", err)
	}
}

func mktemp(dir, prefix string, t *testing.T) string {
	t.Helper()
	tempDir, err := os.MkdirTemp(dir, prefix)
	if err != nil {

// See the License for the specific language governing permissions and
// limitations under the License.

package workload

import (
	"bytes"
	"context"
	"fmt"
	"os"
	"path"
	"reflect"
	"strings"
	"testing"

	"github.com/spf13/cobra"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/istio/istioctl/pkg/cli"

}

// readFile reads a file and returns the contents.
func readFile(path string) (string, error) {
	b, err := os.ReadFile(path)
	return string(b), err
}

// writeFile writes a file and returns an error if operation is unsuccessful.
func writeFile(path string, data []byte) error {
	return os.WriteFile(path, data, 0o644)
}

// inFileAbsolutePath returns the absolute path for an input file like "gateways".

package multixds

// multixds knows how to target either central Istiod or all the Istiod pods on a cluster.

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net"
	"net/url"
	"os"
	"strings"

	discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	xdsstatus "github.com/envoyproxy/go-control-plane/envoy/service/status/v3"
	"google.golang.org/grpc"
	v1 "k8s.io/api/core/v1"

		existingCNIConfig, err := os.ReadFile(cniConfigFilepath)
		if err != nil {
			return "", err
		}
		cniConfig, err = insertCNIConfig(cniConfig, existingCNIConfig)
		if err != nil {
			return "", err
		}
	}

	if err = file.AtomicWrite(cniConfigFilepath, cniConfig, os.FileMode(0o644)); err != nil {

		return nil, fmt.Errorf("failed to resolve unix addr: %w", err)
	}
	// remove potentially existing address
	// Remove unix socket before use, if one is leftover from previous CNI restart
	if err := os.Remove(addr); err != nil && !os.IsNotExist(err) {
		// Anything other than "file not found" is an error.
		return nil, fmt.Errorf("failed to remove unix://%s: %w", addr, err)
	}

	l, err := net.ListenUnix("unixpacket", resolvedAddr)

// See the License for the specific language governing permissions and
// limitations under the License.

package mesh

import (
	"context"
	"fmt"
	"io"
	"os"
	"sort"
	"strings"
	"time"

	"github.com/fatih/color"
	"github.com/spf13/cobra"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"sigs.k8s.io/controller-runtime/pkg/client"

	"istio.io/api/operator/v1alpha1"