feat: ErrForeignKeyViolated implemented

Author: Saeid Saeidee

error_translator.go

@@ -7,8 +7,9 @@ import (
 )
 
 // The error codes to map mssql errors to gorm errors, here is a reference about error codes for mssql https://learn.microsoft.com/en-us/sql/relational-databases/errors-events/database-engine-events-and-errors?view=sql-server-ver16
-var errCodes = map[string]int32{
-	"uniqueConstraint": 2627,
+var errCodes = map[int32]error{
+	2627: gorm.ErrDuplicatedKey,
+	547:  gorm.ErrForeignKeyViolated,
 }
 
 type ErrMessage struct {
@@ -19,9 +20,10 @@ type ErrMessage struct {
 // Translate it will translate the error to native gorm errors.
 func (dialector Dialector) Translate(err error) error {
 	if mssqlErr, ok := err.(mssql.Error); ok {
-		if mssqlErr.Number == errCodes["uniqueConstraint"] {
-			return gorm.ErrDuplicatedKey
+		if translatedErr, found := errCodes[mssqlErr.Number]; found {
+			return translatedErr
 		}
+		return err
 	}
 
 	return err

error_translator_test.go

@@ -0,0 +1,46 @@
+package sqlserver
+
+import (
+	"errors"
+	"testing"
+
+	"gorm.io/gorm"
+
+	"github.com/microsoft/go-mssqldb"
+)
+
+func TestDialector_Translate(t *testing.T) {
+	type fields struct {
+		Config *Config
+	}
+	type args struct {
+		err error
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   error
+	}{
+		{
+			name: "it should return ErrDuplicatedKey error if the error number is 2627",
+			args: args{err: mssql.Error{Number: 2627}},
+			want: gorm.ErrDuplicatedKey,
+		},
+		{
+			name: "it should return ErrForeignKeyViolated the error number is 547",
+			args: args{err: mssql.Error{Number: 547}},
+			want: gorm.ErrForeignKeyViolated,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			dialector := Dialector{
+				Config: tt.fields.Config,
+			}
+			if err := dialector.Translate(tt.args.err); !errors.Is(err, tt.want) {
+				t.Errorf("Translate() expected error = %v, got error %v", err, tt.want)
+			}
+		})
+	}
+}

go.mod

@@ -4,5 +4,5 @@ go 1.14
 
 require (
 	github.com/microsoft/go-mssqldb v1.1.0
-	gorm.io/gorm v1.25.1
+	gorm.io/gorm v1.25.2-0.20230610234218-206613868439
 )

go.sum

@@ -96,5 +96,5 @@ gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gorm.io/gorm v1.25.1 h1:nsSALe5Pr+cM3V1qwwQ7rOkw+6UeLrX5O4v3llhHa64=
-gorm.io/gorm v1.25.1/go.mod h1:L4uxeKpfBml98NYqVqwAdmV1a2nBtAec/cf3fpucW/k=
+gorm.io/gorm v1.25.2-0.20230610234218-206613868439 h1:LerZWOlV0e/6u9dEoVhe7Ehg+o7QvQKIxrI4Ccb2aV8=
+gorm.io/gorm v1.25.2-0.20230610234218-206613868439/go.mod h1:L4uxeKpfBml98NYqVqwAdmV1a2nBtAec/cf3fpucW/k=