chore: replace ioutil.ReadFile with os.ReadFile

auth/auth_test.go

@@ -19,7 +19,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -74,10 +73,10 @@ func TestMain(m *testing.M) {
 	testCookieVerifier, err = cookieVerifierForTests(context.Background())
 	logFatal(err)
 
-	testGetUserResponse, err = ioutil.ReadFile("../testdata/get_user.json")
+	testGetUserResponse, err = os.ReadFile("../testdata/get_user.json")
 	logFatal(err)
 
-	testGetDisabledUserResponse, err = ioutil.ReadFile("../testdata/get_disabled_user.json")
+	testGetDisabledUserResponse, err = os.ReadFile("../testdata/get_disabled_user.json")
 	logFatal(err)
 
 	testIDToken = getIDToken(nil)
@@ -1290,7 +1289,7 @@ type mockKeySource struct {
 }
 
 func newMockKeySource(filePath string) (*mockKeySource, error) {
-	certs, err := ioutil.ReadFile(filePath)
+	certs, err := os.ReadFile(filePath)
 	if err != nil {
 		return nil, err
 	}

auth/tenant_mgt_test.go

@@ -18,8 +18,8 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"reflect"
 	"sort"
 	"strconv"
@@ -178,7 +178,7 @@ func TestTenantGetUserByPhoneNumber(t *testing.T) {
 }
 
 func TestTenantListUsers(t *testing.T) {
-	testListUsersResponse, err := ioutil.ReadFile("../testdata/list_users.json")
+	testListUsersResponse, err := os.ReadFile("../testdata/list_users.json")
 	if err != nil {
 		t.Fatal(err)
 	}

auth/token_generator_test.go

@@ -20,9 +20,10 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"strings"
 	"testing"
 
@@ -90,7 +91,7 @@ func TestEncodeInvalidPayload(t *testing.T) {
 }
 
 func TestServiceAccountSigner(t *testing.T) {
-	b, err := ioutil.ReadFile("../testdata/service_account.json")
+	b, err := os.ReadFile("../testdata/service_account.json")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -331,7 +332,7 @@ func iamServer(t *testing.T, serviceAcct, signature string) *httptest.Server {
 	wantPath := fmt.Sprintf("/v1/projects/-/serviceAccounts/%s:signBlob", serviceAcct)
 	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			t.Fatal(err)
 		}

auth/token_verifier.go

@@ -26,7 +26,7 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"strings"
@@ -417,7 +417,7 @@ func (k *httpKeySource) refreshKeys(ctx context.Context) error {
 	}
 	defer resp.Body.Close()
 
-	contents, err := ioutil.ReadAll(resp.Body)
+	contents, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

auth/token_verifier_test.go

@@ -19,8 +19,8 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"testing"
 	"time"
 
@@ -51,7 +51,7 @@ func TestNewIDTokenVerifier(t *testing.T) {
 }
 
 func TestHTTPKeySource(t *testing.T) {
-	data, err := ioutil.ReadFile("../testdata/public_certs.json")
+	data, err := os.ReadFile("../testdata/public_certs.json")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -68,7 +68,7 @@ func TestHTTPKeySource(t *testing.T) {
 }
 
 func TestHTTPKeySourceWithClient(t *testing.T) {
-	data, err := ioutil.ReadFile("../testdata/public_certs.json")
+	data, err := os.ReadFile("../testdata/public_certs.json")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -160,7 +160,7 @@ func TestFindMaxAge(t *testing.T) {
 }
 
 func TestParsePublicKeys(t *testing.T) {
-	b, err := ioutil.ReadFile("../testdata/public_certs.json")
+	b, err := os.ReadFile("../testdata/public_certs.json")
 	if err != nil {
 		t.Fatal(err)
 	}

auth/user_mgt_test.go

@@ -20,9 +20,10 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"reflect"
 	"sort"
 	"strconv"
@@ -545,7 +546,7 @@ func TestGetNonExistingUser(t *testing.T) {
 }
 
 func TestListUsers(t *testing.T) {
-	testListUsersResponse, err := ioutil.ReadFile("../testdata/list_users.json")
+	testListUsersResponse, err := os.ReadFile("../testdata/list_users.json")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -2542,7 +2543,7 @@ func echoServer(resp interface{}, t *testing.T) *mockAuthServer {
 
 	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			t.Fatal(err)
 		}

db/db_test.go

@@ -18,7 +18,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"net/http/httptest"
@@ -395,7 +395,7 @@ type testReq struct {
 
 func newTestReq(r *http.Request) (*testReq, error) {
 	defer r.Body.Close()
-	b, err := ioutil.ReadAll(r.Body)
+	b, err := io.ReadAll(r.Body)
 	if err != nil {
 		return nil, err
 	}

firebase.go

@@ -21,7 +21,6 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
-	"io/ioutil"
 	"os"
 	"sync"
 
@@ -231,7 +230,7 @@ func getConfigDefaults() (*Config, error) {
 		dat = []byte(confFileName)
 	} else {
 		var err error
-		if dat, err = ioutil.ReadFile(confFileName); err != nil {
+		if dat, err = os.ReadFile(confFileName); err != nil {
 			return nil, err
 		}
 	}

firebase_test.go

@@ -18,7 +18,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"net/http/httptest"
@@ -688,7 +687,7 @@ func compareConfig(got *App, want *Config, t *testing.T) {
 // mockServiceAcct generates a service account configuration with the provided URL as the
 // token_url value.
 func mockServiceAcct(tokenURL string) ([]byte, error) {
-	b, err := ioutil.ReadFile("testdata/service_account.json")
+	b, err := os.ReadFile("testdata/service_account.json")
 	if err != nil {
 		return nil, err
 	}

integration/auth/auth_test.go

@@ -24,7 +24,7 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"math/rand"
 	"net/http"
@@ -86,7 +86,7 @@ func TestCustomToken(t *testing.T) {
 func TestCustomTokenWithoutServiceAccount(t *testing.T) {
 	// Create a TokenSource from the service account. This makes the private key not accessible
 	// to the Firebase APIs.
-	b, err := ioutil.ReadFile(internal.Resource("integration_cert.json"))
+	b, err := os.ReadFile(internal.Resource("integration_cert.json"))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -382,7 +382,7 @@ func postRequest(url string, req []byte) ([]byte, error) {
 	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("unexpected http status code: %d", resp.StatusCode)
 	}
-	return ioutil.ReadAll(resp.Body)
+	return io.ReadAll(resp.Body)
 }
 
 // deleteUser makes a best effort attempt to delete the given user.

integration/db/db_test.go

@@ -21,7 +21,7 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -137,7 +137,7 @@ func initGuestClient(pid string) (*db.Client, error) {
 }
 
 func initRules() {
-	b, err := ioutil.ReadFile(internal.Resource("dinosaurs_index.json"))
+	b, err := os.ReadFile(internal.Resource("dinosaurs_index.json"))
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -162,7 +162,7 @@ func initRules() {
 	}
 	defer resp.Body.Close()
 
-	b, err = ioutil.ReadAll(resp.Body)
+	b, err = io.ReadAll(resp.Body)
 	if err != nil {
 		log.Fatalln(err)
 	} else if resp.StatusCode != http.StatusOK {
@@ -171,7 +171,7 @@ func initRules() {
 }
 
 func initData() {
-	b, err := ioutil.ReadFile(internal.Resource("dinosaurs.json"))
+	b, err := os.ReadFile(internal.Resource("dinosaurs.json"))
 	if err != nil {
 		log.Fatalln(err)
 	}

integration/internal/internal.go

@@ -18,8 +18,8 @@ package internal
 import (
 	"context"
 	"encoding/json"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -52,7 +52,7 @@ func NewTestApp(ctx context.Context, conf *firebase.Config) (*firebase.App, erro
 // APIKey reads the API key string from a file named integration_apikey.txt
 // in the testdata directory.
 func APIKey() (string, error) {
-	b, err := ioutil.ReadFile(Resource(apiKeyPath))
+	b, err := os.ReadFile(Resource(apiKeyPath))
 	if err != nil {
 		return "", err
 	}
@@ -61,7 +61,7 @@ func APIKey() (string, error) {
 
 // ProjectID fetches a Google Cloud project ID for integration tests.
 func ProjectID() (string, error) {
-	b, err := ioutil.ReadFile(Resource(certPath))
+	b, err := os.ReadFile(Resource(certPath))
 	if err != nil {
 		return "", err
 	}

integration/storage/storage_test.go

@@ -18,7 +18,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"os"
 	"testing"
@@ -115,7 +115,7 @@ func verifyBucket(bucket *gcs.BucketHandle) error {
 		return err
 	}
 	defer r.Close()
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		return err
 	}

internal/errors_test.go

@@ -19,7 +19,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/http/httptest"
@@ -321,7 +321,7 @@ func TestErrorHTTPResponse(t *testing.T) {
 		t.Errorf("Do() Response.StatusCode = %d; want = %d", hr.StatusCode, http.StatusInternalServerError)
 	}
 
-	b, err := ioutil.ReadAll(hr.Body)
+	b, err := io.ReadAll(hr.Body)
 	if err != nil {
 		t.Fatalf("ReadAll(Response.Body) = %v", err)
 	}

internal/http_client.go

@@ -20,7 +20,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math"
 	"net/http"
 	"runtime"
@@ -121,7 +120,7 @@ func (r *Response) LowLevelResponse() *http.Response {
 	}
 
 	resp := *r.resp
-	resp.Body = ioutil.NopCloser(bytes.NewBuffer(r.Body))
+	resp.Body = io.NopCloser(bytes.NewBuffer(r.Body))
 	return &resp
 }
 
@@ -305,7 +304,7 @@ func (e *jsonEntity) Mime() string {
 
 func newResponse(resp *http.Response) (*Response, error) {
 	defer resp.Body.Close()
-	b, err := ioutil.ReadAll(resp.Body)
+	b, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

internal/http_client_test.go

@@ -18,7 +18,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"reflect"
@@ -147,7 +147,7 @@ func TestHTTPClient(t *testing.T) {
 				t.Errorf("[%d] Content-Type = %q; want = %q", idx, h, "application/json")
 			}
 			wb := []byte(want.body)
-			gb, err := ioutil.ReadAll(r.Body)
+			gb, err := io.ReadAll(r.Body)
 			if err != nil {
 				t.Fatal(err)
 			}