Move from deprecated ioutil to os and io packages (#4364)

4 files changed, 16 insertions, 18 deletions

diff --git a/caddytest/caddytest.go b/caddytest/caddytest.go
index 094e45c..3be332e 100644
--- a/caddytest/caddytest.go
+++ b/caddytest/caddytest.go
@@ -7,7 +7,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -129,7 +129,7 @@ func (tc *Tester) initServer(rawConfig string, configType string) error {
 				return
 			}
 			defer res.Body.Close()
-			body, _ := ioutil.ReadAll(res.Body)
+			body, _ := io.ReadAll(res.Body)
 
 			var out bytes.Buffer
 			_ = json.Indent(&out, body, "", "  ")
@@ -162,7 +162,7 @@ func (tc *Tester) initServer(rawConfig string, configType string) error {
 	timeElapsed(start, "caddytest: config load time")
 
 	defer res.Body.Close()
-	body, err := ioutil.ReadAll(res.Body)
+	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		tc.t.Errorf("unable to read response. %s", err)
 		return err
@@ -202,7 +202,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
 			return nil
 		}
 		defer resp.Body.Close()
-		actualBytes, err := ioutil.ReadAll(resp.Body)
+		actualBytes, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return nil
 		}
@@ -471,7 +471,7 @@ func (tc *Tester) AssertResponse(req *http.Request, expectedStatusCode int, expe
 	resp := tc.AssertResponseCode(req, expectedStatusCode)
 
 	defer resp.Body.Close()
-	bytes, err := ioutil.ReadAll(resp.Body)
+	bytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		tc.t.Fatalf("unable to read the response body %s", err)
 	}
diff --git a/caddytest/integration/caddyfile_adapt_test.go b/caddytest/integration/caddyfile_adapt_test.go
index e109899..5b052df 100644
--- a/caddytest/integration/caddyfile_adapt_test.go
+++ b/caddytest/integration/caddyfile_adapt_test.go
@@ -3,7 +3,7 @@ package integration
 import (
 	jsonMod "encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"regexp"
 	"strings"
@@ -14,7 +14,7 @@ import (
 
 func TestCaddyfileAdaptToJSON(t *testing.T) {
 	// load the list of test files from the dir
-	files, err := ioutil.ReadDir("./caddyfile_adapt")
+	files, err := os.ReadDir("./caddyfile_adapt")
 	if err != nil {
 		t.Errorf("failed to read caddyfile_adapt dir: %s", err)
 	}
@@ -29,7 +29,7 @@ func TestCaddyfileAdaptToJSON(t *testing.T) {
 
 		// read the test file
 		filename := f.Name()
-		data, err := ioutil.ReadFile("./caddyfile_adapt/" + filename)
+		data, err := os.ReadFile("./caddyfile_adapt/" + filename)
 		if err != nil {
 			t.Errorf("failed to read %s dir: %s", filename, err)
 		}
diff --git a/caddytest/integration/reverseproxy_test.go b/caddytest/integration/reverseproxy_test.go
index 422f671..ca11287 100644
--- a/caddytest/integration/reverseproxy_test.go
+++ b/caddytest/integration/reverseproxy_test.go
@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
@@ -85,7 +84,7 @@ func TestDialWithPlaceholderUnix(t *testing.T) {
 		t.SkipNow()
 	}
 
-	f, err := ioutil.TempFile("", "*.sock")
+	f, err := os.CreateTemp("", "*.sock")
 	if err != nil {
 		t.Errorf("failed to create TempFile: %s", err)
 		return
@@ -387,7 +386,7 @@ func TestReverseProxyHealthCheckUnixSocket(t *testing.T) {
 		t.SkipNow()
 	}
 	tester := caddytest.NewTester(t)
-	f, err := ioutil.TempFile("", "*.sock")
+	f, err := os.CreateTemp("", "*.sock")
 	if err != nil {
 		t.Errorf("failed to create TempFile: %s", err)
 		return
@@ -442,7 +441,7 @@ func TestReverseProxyHealthCheckUnixSocketWithoutPort(t *testing.T) {
 		t.SkipNow()
 	}
 	tester := caddytest.NewTester(t)
-	f, err := ioutil.TempFile("", "*.sock")
+	f, err := os.CreateTemp("", "*.sock")
 	if err != nil {
 		t.Errorf("failed to create TempFile: %s", err)
 		return
diff --git a/caddytest/integration/stream_test.go b/caddytest/integration/stream_test.go
index b6447c6..d5edb79 100644
--- a/caddytest/integration/stream_test.go
+++ b/caddytest/integration/stream_test.go
@@ -6,7 +6,6 @@ import (
 	"crypto/rand"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
@@ -110,7 +109,7 @@ func TestH2ToH2CStream(t *testing.T) {
 	r, w := io.Pipe()
 	req := &http.Request{
 		Method: "PUT",
-		Body:   ioutil.NopCloser(r),
+		Body:   io.NopCloser(r),
 		URL: &url.URL{
 			Scheme: "https",
 			Host:   "127.0.0.1:9443",
@@ -134,7 +133,7 @@ func TestH2ToH2CStream(t *testing.T) {
 	}()
 
 	defer resp.Body.Close()
-	bytes, err := ioutil.ReadAll(resp.Body)
+	bytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		t.Fatalf("unable to read the response body %s", err)
 	}
@@ -319,7 +318,7 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
 	r, w := io.Pipe()
 	req := &http.Request{
 		Method: "PUT",
-		Body:   ioutil.NopCloser(r),
+		Body:   io.NopCloser(r),
 		URL: &url.URL{
 			Scheme: "https",
 			Host:   "127.0.0.1:9443",
@@ -342,7 +341,7 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
 	}
 
 	defer resp.Body.Close()
-	bytes, err := ioutil.ReadAll(resp.Body)
+	bytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		t.Fatalf("unable to read the response body %s", err)
 	}
@@ -370,7 +369,7 @@ func testH2ToH1ChunkedResponseServeH1(t *testing.T) *http.Server {
 		}
 
 		defer r.Body.Close()
-		bytes, err := ioutil.ReadAll(r.Body)
+		bytes, err := io.ReadAll(r.Body)
 		if err != nil {
 			t.Fatalf("unable to read the response body %s", err)
 		}