[test] clean up io/ioutil package

test/artifact_bucket_test.go

@@ -22,7 +22,6 @@ package test
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -280,7 +279,7 @@ func updateConfigMap(ctx context.Context, client kubernetes.Interface, name stri
 
 func getBucketSecret(t *testing.T, configFilePath, namespace string) *corev1.Secret {
 	t.Helper()
-	f, err := ioutil.ReadFile(configFilePath)
+	f, err := os.ReadFile(configFilePath)
 	if err != nil {
 		t.Fatalf("Failed to read json key file %s at path %s", err, configFilePath)
 	}

test/build_logs.go

@@ -19,7 +19,7 @@ package test
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"strings"
 
 	corev1 "k8s.io/api/core/v1"
@@ -65,7 +65,7 @@ func getContainerLogsFromPod(ctx context.Context, c kubernetes.Interface, pod, c
 	if err != nil {
 		return "", err
 	}
-	bs, err := ioutil.ReadAll(rc)
+	bs, err := io.ReadAll(rc)
 	if err != nil {
 		return "", err
 	}

test/examples_test.go

@@ -23,7 +23,6 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -137,7 +136,7 @@ func exampleTest(path string, waitValidateFunc waitFunc, createFunc createFunc,
 		knativetest.CleanupOnInterrupt(func() { tearDown(ctx, t, c, namespace) }, t.Logf)
 		defer tearDown(ctx, t, c, namespace)
 
-		inputExample, err := ioutil.ReadFile(path)
+		inputExample, err := os.ReadFile(path)
 		if err != nil {
 			t.Fatalf("Error reading file: %v", err)
 		}

test/pullrequest/e2e_test.go

@@ -25,7 +25,6 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
@@ -45,7 +44,7 @@ var (
 )
 
 func TestPullRequest(t *testing.T) {
-	tmpdir, err := ioutil.TempDir("", t.Name())
+	tmpdir, err := os.MkdirTemp("", t.Name())
 	if err != nil {
 		t.Fatalf("could not create test temp dir: %v", err)
 	}

test/pullrequest/http.go

@@ -3,7 +3,6 @@ package pullrequest
 import (
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"path/filepath"
@@ -21,8 +20,8 @@ type handler struct {
 func reflect(w http.ResponseWriter, r *http.Request) {
 	t := io.TeeReader(r.Body, w)
 	defer r.Body.Close()
-	if _, err := ioutil.ReadAll(t); err != nil {
-		log.Printf("ioutil.ReadAll: %v", err)
+	if _, err := io.ReadAll(t); err != nil {
+		log.Printf("io.ReadAll: %v", err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}

test/resolvers_test.go

@@ -24,7 +24,7 @@ import (
 	"context"
 	"encoding/base64"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"regexp"
 	"testing"
@@ -540,7 +540,7 @@ spec:
 // just confused things.
 func setupGitea(ctx context.Context, t *testing.T, c *clients, namespace string) (string, string) {
 	t.Helper()
-	giteaYaml, err := ioutil.ReadFile(filepath.Join("git-resolver", "gitea.yaml"))
+	giteaYaml, err := os.ReadFile(filepath.Join("git-resolver", "gitea.yaml"))
 	if err != nil {
 		t.Fatalf("failed to read gitea.yaml: %v", err)
 	}
@@ -640,7 +640,7 @@ spec:
 		t.Fatalf("Failed to create gitea token secret %s: %v", secretName, err)
 	}
 
-	remoteTaskBytes, err := ioutil.ReadFile(filepath.Join("git-resolver", "remote-task.yaml"))
+	remoteTaskBytes, err := os.ReadFile(filepath.Join("git-resolver", "remote-task.yaml"))
 	if err != nil {
 		t.Fatalf("Failed to read git-resolver/remote-task.yaml: %v", err)
 	}

test/secret.go

@@ -22,7 +22,6 @@ package test
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -53,7 +52,7 @@ func CreateGCPServiceAccountSecret(t *testing.T, c kubernetes.Interface, namespa
 		},
 	}
 
-	bs, err := ioutil.ReadFile(file)
+	bs, err := os.ReadFile(file)
 	if err != nil {
 		return false, fmt.Errorf("couldn't read secret json from %s: %w", file, err)
 	}

test/tektonbundles_test.go

@@ -25,7 +25,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -540,7 +539,7 @@ spec:
 
 func tarImageInOCIFormat(namespace string, img v1.Image) ([]byte, error) {
 	// Write the image in the OCI layout and then tar it up.
-	dir, err := ioutil.TempDir(os.TempDir(), namespace)
+	dir, err := os.MkdirTemp(os.TempDir(), namespace)
 	if err != nil {
 		return nil, err
 	}
@@ -588,7 +587,7 @@ func tarImageInOCIFormat(namespace string, img v1.Image) ([]byte, error) {
 	}
 
 	// Pull out the tar bundle into a bytes object.
-	return ioutil.ReadAll(&buf)
+	return io.ReadAll(&buf)
 }
 
 // publishImg will generate a Pod that runs in the namespace to publish an OCI compliant image into the local registry

test/trusted_resources_test.go

@@ -23,7 +23,6 @@ import (
 	"context"
 	"crypto"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -448,7 +447,7 @@ func setSecretAndConfig(ctx context.Context, t *testing.T, client kubernetes.Int
 		t.Errorf("error getting signer from key file: %v", err)
 	}
 
-	fileBytes, err := ioutil.ReadFile(filepath.Clean(pubKey))
+	fileBytes, err := os.ReadFile(filepath.Clean(pubKey))
 	if err != nil {
 		t.Fatal(err)
 	}