refactor: unify the error handling methods in the crypto package that…

… are different from the project style (#1016)

Signed-off-by: ChengenH <[email protected]>

benchmarks/cosmos-exim/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"time"
@@ -128,7 +129,7 @@ func runExport(dbPath string) (int64, map[string][]*iavl.ExportNode, error) {
 		defer exporter.Close()
 		for {
 			node, err := exporter.Next()
-			if err == iavl.ErrorExportDone {
+			if errors.Is(err, iavl.ErrorExportDone) {
 				break
 			} else if err != nil {
 				return 0, nil, err

export_test.go

@@ -1,6 +1,7 @@
 package iavl
 
 import (
+	"errors"
 	"math"
 	"math/rand"
 	"testing"
@@ -180,7 +181,7 @@ func TestExporter(t *testing.T) {
 	defer exporter.Close()
 	for {
 		node, err := exporter.Next()
-		if err == ErrorExportDone {
+		if errors.Is(err, ErrorExportDone) {
 			break
 		}
 		require.NoError(t, err)
@@ -215,7 +216,7 @@ func TestExporterCompress(t *testing.T) {
 	exporter := NewCompressExporter(innerExporter)
 	for {
 		node, err := exporter.Next()
-		if err == ErrorExportDone {
+		if errors.Is(err, ErrorExportDone) {
 			break
 		}
 		require.NoError(t, err)
@@ -266,7 +267,7 @@ func TestExporter_Import(t *testing.T) {
 
 				for {
 					item, err := exporter.Next()
-					if err == ErrorExportDone {
+					if errors.Is(err, ErrorExportDone) {
 						err = innerImporter.Commit()
 						require.NoError(t, err)
 						break
@@ -365,7 +366,7 @@ func BenchmarkExport(b *testing.B) {
 		require.NoError(b, err)
 		for {
 			_, err := exporter.Next()
-			if err == ErrorExportDone {
+			if errors.Is(err, ErrorExportDone) {
 				break
 			} else if err != nil {
 				b.Error(err)

import_test.go

@@ -1,6 +1,7 @@
 package iavl
 
 import (
+	"errors"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -43,7 +44,7 @@ func ExampleImporter() {
 	for {
 		var node *ExportNode
 		node, err = exporter.Next()
-		if err == ErrorExportDone {
+		if errors.Is(err, ErrorExportDone) {
 			break
 		} else if err != nil {
 			panic(err)
@@ -247,7 +248,7 @@ func benchmarkImport(b *testing.B, nodes int) {
 	require.NoError(b, err)
 	for {
 		item, err := exporter.Next()
-		if err == ErrorExportDone {
+		if errors.Is(err, ErrorExportDone) {
 			break
 		} else if err != nil {
 			b.Error(err)