Replacing the deprecated ioutil package (quii#569)

* replaced ioutil in .md files

* replaced ioutil in .go files

command-line/v1/file_system_store_test.go

@@ -1,15 +1,14 @@
 package poker
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

command-line/v1/tape_test.go

@@ -1,7 +1,7 @@
 package poker
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

command-line/v2/file_system_store_test.go

@@ -1,15 +1,14 @@
 package poker
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

command-line/v2/tape_test.go

@@ -1,7 +1,7 @@
 package poker
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

command-line/v3/file_system_store_test.go

@@ -1,15 +1,14 @@
 package poker
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

command-line/v3/tape_test.go

@@ -1,7 +1,7 @@
 package poker
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

context-aware-reader.md

@@ -28,7 +28,7 @@ They combined two simple abstractions (`context.Context` and `io.Reader`) to sol
 
 Let's try and TDD some functionality so that we can wrap an `io.Reader` so it can be cancelled.
 
-Testing this poses an interesting challenge. Normally when using an `io.Reader` you're usually supplying it to some other function and you don't really concern yourself with the details; such as `json.NewDecoder` or `ioutil.ReadAll`.
+Testing this poses an interesting challenge. Normally when using an `io.Reader` you're usually supplying it to some other function and you don't really concern yourself with the details; such as `json.NewDecoder` or `io.ReadAll`.
 
 What we want to demonstrate is something like
 

error-types.md

@@ -24,7 +24,7 @@ func DumbGetter(url string) (string, error) {
 	}
 
 	defer res.Body.Close()
-	body, _ := ioutil.ReadAll(res.Body) // ignoring err for brevity
+	body, _ := io.ReadAll(res.Body) // ignoring err for brevity
 
 	return string(body), nil
 }

io.md

@@ -459,7 +459,7 @@ Let's create some helper functions which will create a temporary file with some
 func createTempFile(t testing.TB, initialData string) (io.ReadWriteSeeker, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)
@@ -483,7 +483,7 @@ func assertScoreEquals(t testing.TB, got, want int) {
 }
 ```
 
-[TempFile](https://golang.org/pkg/io/ioutil/#TempFile) creates a temporary file for us to use. The `"db"` value we've passed in is a prefix put on a random file name it will create. This is to ensure it won't clash with other files by accident.
+[CreateTemp](https://pkg.go.dev/os#CreateTemp) creates a temporary file for us to use. The `"db"` value we've passed in is a prefix put on a random file name it will create. This is to ensure it won't clash with other files by accident.
 
 You'll notice we're not only returning our `ReadWriteSeeker` (the file) but also a function. We need to make sure that the file is removed once the test is finished. We don't want to leak details of the files into the test as it's prone to error and uninteresting for the reader. By returning a `removeFile` function, we can take care of the details in our helper and all the caller has to do is run `defer cleanDatabase()`.
 
@@ -881,7 +881,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

io/v3/file_system_store_test.go

@@ -2,15 +2,14 @@ package main
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (io.ReadWriteSeeker, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v4/file_system_store_test.go

@@ -2,15 +2,14 @@ package main
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (io.ReadWriteSeeker, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v5/file_system_store_test.go

@@ -2,15 +2,14 @@ package main
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (io.ReadWriteSeeker, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v6/file_system_store_test.go

@@ -2,15 +2,14 @@ package main
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (io.ReadWriteSeeker, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v7/file_system_store_test.go

@@ -1,15 +1,14 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v7/tape_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

io/v8/file_system_store_test.go

@@ -1,15 +1,14 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v8/tape_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

io/v9/file_system_store_test.go

@@ -1,15 +1,14 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func createTempFile(t testing.TB, initialData string) (*os.File, func()) {
 	t.Helper()
 
-	tmpfile, err := ioutil.TempFile("", "db")
+	tmpfile, err := os.CreateTemp("", "db")
 
 	if err != nil {
 		t.Fatalf("could not create temp file %v", err)

io/v9/tape_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -14,7 +14,7 @@ func TestTape_Write(t *testing.T) {
 	tape.Write([]byte("abc"))
 
 	file.Seek(0, 0)
-	newFileContents, _ := ioutil.ReadAll(file)
+	newFileContents, _ := io.ReadAll(file)
 
 	got := string(newFileContents)
 	want := "abc"

os-exec.md

@@ -99,7 +99,7 @@ func getXMLFromCommand() io.Reader {
 	out, _ := cmd.StdoutPipe()
 
 	cmd.Start()
-	data, _ := ioutil.ReadAll(out)
+	data, _ := io.ReadAll(out)
 	cmd.Wait()
 
 	return bytes.NewReader(data)

q-and-a/error-types/error-types_test.go

@@ -2,7 +2,7 @@ package errortypes
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -30,7 +30,7 @@ func DumbGetter(url string) (string, error) {
 	}
 
 	defer res.Body.Close()
-	body, _ := ioutil.ReadAll(res.Body) // ignoring err for brevity
+	body, _ := io.ReadAll(res.Body) // ignoring err for brevity
 
 	return string(body), nil
 }

q-and-a/error-types/v2/error-types_test.go

@@ -3,7 +3,7 @@ package errortypes
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -31,7 +31,7 @@ func DumbGetter(url string) (string, error) {
 	}
 
 	defer res.Body.Close()
-	body, _ := ioutil.ReadAll(res.Body) // ignoring err for brevity
+	body, _ := io.ReadAll(res.Body) // ignoring err for brevity
 
 	return string(body), nil
 }

q-and-a/os-exec/os-exec_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"encoding/xml"
 	"io"
-	"io/ioutil"
 	"os/exec"
 	"strings"
 	"testing"
@@ -25,7 +24,7 @@ func getXMLFromCommand() io.Reader {
 	out, _ := cmd.StdoutPipe()
 
 	cmd.Start()
-	data, _ := ioutil.ReadAll(out)
+	data, _ := io.ReadAll(out)
 	cmd.Wait()
 
 	return bytes.NewReader(data)