diff --git a/internal/backend/azure/config_test.go b/internal/backend/azure/config_test.go
index a57542e77..0d76c98ee 100644
--- a/internal/backend/azure/config_test.go
+++ b/internal/backend/azure/config_test.go
@@ -1,11 +1,12 @@
 package azure
 
-import "testing"
+import (
+	"testing"
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+	"github.com/restic/restic/internal/backend/test"
+)
+
+var configTests = []test.ConfigTestData[Config]{
 	{"azure:container-name:/", Config{
 		Container:   "container-name",
 		Prefix:      "",
@@ -24,17 +25,5 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for i, test := range configTests {
-		cfg, err := ParseConfig(test.s)
-		if err != nil {
-			t.Errorf("test %d:%s failed: %v", i, test.s, err)
-			continue
-		}
-
-		if cfg != test.cfg {
-			t.Errorf("test %d:\ninput:\n  %s\n wrong config, want:\n  %v\ngot:\n  %v",
-				i, test.s, test.cfg, cfg)
-			continue
-		}
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
diff --git a/internal/backend/b2/config_test.go b/internal/backend/b2/config_test.go
index 4194cb62c..157dfc085 100644
--- a/internal/backend/b2/config_test.go
+++ b/internal/backend/b2/config_test.go
@@ -1,11 +1,12 @@
 package b2
 
-import "testing"
+import (
+	"testing"
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+	"github.com/restic/restic/internal/backend/test"
+)
+
+var configTests = []test.ConfigTestData[Config]{
 	{"b2:bucketname", Config{
 		Bucket:      "bucketname",
 		Prefix:      "",
@@ -39,19 +40,7 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for _, test := range configTests {
-		t.Run("", func(t *testing.T) {
-			cfg, err := ParseConfig(test.s)
-			if err != nil {
-				t.Fatalf("%s failed: %v", test.s, err)
-			}
-
-			if cfg != test.cfg {
-				t.Fatalf("input: %s\n wrong config, want:\n  %#v\ngot:\n  %#v",
-					test.s, test.cfg, cfg)
-			}
-		})
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
 
 var invalidConfigTests = []struct {
diff --git a/internal/backend/gs/config_test.go b/internal/backend/gs/config_test.go
index fb2774d25..927be5788 100644
--- a/internal/backend/gs/config_test.go
+++ b/internal/backend/gs/config_test.go
@@ -1,11 +1,12 @@
 package gs
 
-import "testing"
+import (
+	"testing"
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+	"github.com/restic/restic/internal/backend/test"
+)
+
+var configTests = []test.ConfigTestData[Config]{
 	{"gs:bucketname:/", Config{
 		Bucket:      "bucketname",
 		Prefix:      "",
@@ -27,17 +28,5 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for i, test := range configTests {
-		cfg, err := ParseConfig(test.s)
-		if err != nil {
-			t.Errorf("test %d:%s failed: %v", i, test.s, err)
-			continue
-		}
-
-		if cfg != test.cfg {
-			t.Errorf("test %d:\ninput:\n  %s\n wrong config, want:\n  %v\ngot:\n  %v",
-				i, test.s, test.cfg, cfg)
-			continue
-		}
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
diff --git a/internal/backend/rclone/config_test.go b/internal/backend/rclone/config_test.go
index 923555136..ada9df293 100644
--- a/internal/backend/rclone/config_test.go
+++ b/internal/backend/rclone/config_test.go
@@ -1,37 +1,24 @@
 package rclone
 
 import (
-	"reflect"
 	"testing"
+
+	"github.com/restic/restic/internal/backend/test"
 )
 
-func TestParseConfig(t *testing.T) {
-	var tests = []struct {
-		s   string
-		cfg Config
-	}{
-		{
-			"rclone:local:foo:/bar",
-			Config{
-				Remote:      "local:foo:/bar",
-				Program:     defaultConfig.Program,
-				Args:        defaultConfig.Args,
-				Connections: defaultConfig.Connections,
-				Timeout:     defaultConfig.Timeout,
-			},
+var configTests = []test.ConfigTestData[Config]{
+	{
+		"rclone:local:foo:/bar",
+		Config{
+			Remote:      "local:foo:/bar",
+			Program:     defaultConfig.Program,
+			Args:        defaultConfig.Args,
+			Connections: defaultConfig.Connections,
+			Timeout:     defaultConfig.Timeout,
 		},
-	}
-
-	for _, test := range tests {
-		t.Run("", func(t *testing.T) {
-			cfg, err := ParseConfig(test.s)
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			if !reflect.DeepEqual(cfg, test.cfg) {
-				t.Fatalf("wrong config, want:\n  %v\ngot:\n  %v", test.cfg, cfg)
-			}
-		})
-	}
+	},
+}
+
+func TestParseConfig(t *testing.T) {
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
diff --git a/internal/backend/rest/config_test.go b/internal/backend/rest/config_test.go
index 2d8e32a73..8cfc78407 100644
--- a/internal/backend/rest/config_test.go
+++ b/internal/backend/rest/config_test.go
@@ -2,8 +2,9 @@ package rest
 
 import (
 	"net/url"
-	"reflect"
 	"testing"
+
+	"github.com/restic/restic/internal/backend/test"
 )
 
 func parseURL(s string) *url.URL {
@@ -15,20 +16,17 @@ func parseURL(s string) *url.URL {
 	return u
 }
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+var configTests = []test.ConfigTestData[Config]{
 	{
-		s: "rest:http://localhost:1234",
-		cfg: Config{
+		S: "rest:http://localhost:1234",
+		Cfg: Config{
 			URL:         parseURL("http://localhost:1234/"),
 			Connections: 5,
 		},
 	},
 	{
-		s: "rest:http://localhost:1234/",
-		cfg: Config{
+		S: "rest:http://localhost:1234/",
+		Cfg: Config{
 			URL:         parseURL("http://localhost:1234/"),
 			Connections: 5,
 		},
@@ -36,17 +34,5 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for _, test := range configTests {
-		t.Run("", func(t *testing.T) {
-			cfg, err := ParseConfig(test.s)
-			if err != nil {
-				t.Fatalf("%s failed: %v", test.s, err)
-			}
-
-			if !reflect.DeepEqual(cfg, test.cfg) {
-				t.Fatalf("\ninput: %s\n wrong config, want:\n  %v\ngot:\n  %v",
-					test.s, test.cfg, cfg)
-			}
-		})
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
diff --git a/internal/backend/s3/config_test.go b/internal/backend/s3/config_test.go
index 821fbc244..24315d159 100644
--- a/internal/backend/s3/config_test.go
+++ b/internal/backend/s3/config_test.go
@@ -3,12 +3,11 @@ package s3
 import (
 	"strings"
 	"testing"
+
+	"github.com/restic/restic/internal/backend/test"
 )
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+var configTests = []test.ConfigTestData[Config]{
 	{"s3://eu-central-1/bucketname", Config{
 		Endpoint:    "eu-central-1",
 		Bucket:      "bucketname",
@@ -100,19 +99,7 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for i, test := range configTests {
-		cfg, err := ParseConfig(test.s)
-		if err != nil {
-			t.Errorf("test %d:%s failed: %v", i, test.s, err)
-			continue
-		}
-
-		if cfg != test.cfg {
-			t.Errorf("test %d:\ninput:\n  %s\n wrong config, want:\n  %v\ngot:\n  %v",
-				i, test.s, test.cfg, cfg)
-			continue
-		}
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
 
 func TestParseError(t *testing.T) {
diff --git a/internal/backend/sftp/config_test.go b/internal/backend/sftp/config_test.go
index 3772c038b..ae2494791 100644
--- a/internal/backend/sftp/config_test.go
+++ b/internal/backend/sftp/config_test.go
@@ -2,12 +2,11 @@ package sftp
 
 import (
 	"testing"
+
+	"github.com/restic/restic/internal/backend/test"
 )
 
-var configTests = []struct {
-	in  string
-	cfg Config
-}{
+var configTests = []test.ConfigTestData[Config]{
 	// first form, user specified sftp://user@host/dir
 	{
 		"sftp://user@host/dir/subdir",
@@ -77,19 +76,7 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for i, test := range configTests {
-		cfg, err := ParseConfig(test.in)
-		if err != nil {
-			t.Errorf("test %d:%s failed: %v", i, test.in, err)
-			continue
-		}
-
-		if cfg != test.cfg {
-			t.Errorf("test %d:\ninput:\n  %s\n wrong config, want:\n  %v\ngot:\n  %v",
-				i, test.in, test.cfg, cfg)
-			continue
-		}
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
 
 var configTestsInvalid = []string{
diff --git a/internal/backend/swift/config_test.go b/internal/backend/swift/config_test.go
index 57002a924..57551efa5 100644
--- a/internal/backend/swift/config_test.go
+++ b/internal/backend/swift/config_test.go
@@ -1,11 +1,12 @@
 package swift
 
-import "testing"
+import (
+	"testing"
 
-var configTests = []struct {
-	s   string
-	cfg Config
-}{
+	"github.com/restic/restic/internal/backend/test"
+)
+
+var configTests = []test.ConfigTestData[Config]{
 	{
 		"swift:cnt1:/",
 		Config{
@@ -31,19 +32,7 @@ var configTests = []struct {
 }
 
 func TestParseConfig(t *testing.T) {
-	for _, test := range configTests {
-		t.Run("", func(t *testing.T) {
-			cfg, err := ParseConfig(test.s)
-			if err != nil {
-				t.Fatalf("parsing %q failed: %v", test.s, err)
-			}
-
-			if cfg != test.cfg {
-				t.Fatalf("wrong output for %q, want:\n  %#v\ngot:\n  %#v",
-					test.s, test.cfg, cfg)
-			}
-		})
-	}
+	test.ParseConfigTester(t, ParseConfig, configTests)
 }
 
 var configTestsInvalid = []string{
diff --git a/internal/backend/test/config.go b/internal/backend/test/config.go
new file mode 100644
index 000000000..77172dc86
--- /dev/null
+++ b/internal/backend/test/config.go
@@ -0,0 +1,28 @@
+package test
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+type ConfigTestData[C comparable] struct {
+	S   string
+	Cfg C
+}
+
+func ParseConfigTester[C comparable](t *testing.T, parser func(s string) (C, error), tests []ConfigTestData[C]) {
+	for i, test := range tests {
+		t.Run(fmt.Sprint(i), func(t *testing.T) {
+			cfg, err := parser(test.S)
+			if err != nil {
+				t.Fatalf("%s failed: %v", test.S, err)
+			}
+
+			if !reflect.DeepEqual(cfg, test.Cfg) {
+				t.Fatalf("input: %s\n wrong config, want:\n  %#v\ngot:\n  %#v",
+					test.S, test.Cfg, cfg)
+			}
+		})
+	}
+}