diff --git a/test/plugin_workers/ec_repair/detection_test.go b/test/plugin_workers/ec_repair/detection_test.go
index e4846bab1..dc4a3dfe7 100644
--- a/test/plugin_workers/ec_repair/detection_test.go
+++ b/test/plugin_workers/ec_repair/detection_test.go
@@ -2,7 +2,6 @@ package ec_repair_test
 
 import (
 	"context"
-	"sort"
 	"testing"
 	"time"
 
@@ -15,14 +14,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 )
 
-type nodeSpec struct {
-	id       string
-	address  string
-	diskType string
-	diskID   uint32
-	ecShards []*master_pb.VolumeEcShardInformationMessage
-}
-
 func TestEcRepairDetectionFindsCandidates(t *testing.T) {
 	const (
 		volumeID   = uint32(100)
@@ -85,58 +76,3 @@ func TestEcRepairDetectionFindsCandidates(t *testing.T) {
 	require.NotEmpty(t, proposals)
 	require.Equal(t, "ec_repair", proposals[0].JobType)
 }
-
-func buildTopology(nodes []nodeSpec) *master_pb.TopologyInfo {
-	dataNodes := make([]*master_pb.DataNodeInfo, 0, len(nodes))
-	for _, node := range nodes {
-		diskInfo := &master_pb.DiskInfo{
-			DiskId:         node.diskID,
-			MaxVolumeCount: 100,
-			VolumeCount:    10,
-			EcShardInfos:   node.ecShards,
-		}
-		dataNodes = append(dataNodes, &master_pb.DataNodeInfo{
-			Id:        node.id,
-			Address:   node.address,
-			DiskInfos: map[string]*master_pb.DiskInfo{node.diskType: diskInfo},
-		})
-	}
-
-	return &master_pb.TopologyInfo{
-		DataCenterInfos: []*master_pb.DataCenterInfo{
-			{
-				Id: "dc1",
-				RackInfos: []*master_pb.RackInfo{
-					{
-						Id:            "rack1",
-						DataNodeInfos: dataNodes,
-					},
-				},
-			},
-		},
-	}
-}
-
-func buildEcShardInfo(volumeID uint32, collection, diskType string, diskID uint32, shardSizes map[uint32]int64) *master_pb.VolumeEcShardInformationMessage {
-	shardIDs := make([]int, 0, len(shardSizes))
-	for shardID := range shardSizes {
-		shardIDs = append(shardIDs, int(shardID))
-	}
-	sort.Ints(shardIDs)
-
-	var bits uint32
-	sizes := make([]int64, 0, len(shardIDs))
-	for _, shardID := range shardIDs {
-		bits |= (1 << shardID)
-		sizes = append(sizes, shardSizes[uint32(shardID)])
-	}
-
-	return &master_pb.VolumeEcShardInformationMessage{
-		Id:          volumeID,
-		Collection:  collection,
-		EcIndexBits: bits,
-		DiskType:    diskType,
-		DiskId:      diskID,
-		ShardSizes:  sizes,
-	}
-}
diff --git a/test/plugin_workers/ec_repair/execution_test.go b/test/plugin_workers/ec_repair/execution_test.go
index 7b766f97f..436579913 100644
--- a/test/plugin_workers/ec_repair/execution_test.go
+++ b/test/plugin_workers/ec_repair/execution_test.go
@@ -3,7 +3,6 @@ package ec_repair_test
 import (
 	"context"
 	"fmt"
-	"sort"
 	"testing"
 	"time"
 
@@ -16,14 +15,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 )
 
-type execNodeSpec struct {
-	id       string
-	address  string
-	diskType string
-	diskID   uint32
-	ecShards []*master_pb.VolumeEcShardInformationMessage
-}
-
 func TestEcRepairExecutionRepairsShards(t *testing.T) {
 	const (
 		volumeID   = uint32(200)
@@ -38,54 +29,53 @@ func TestEcRepairExecutionRepairsShards(t *testing.T) {
 		pluginworkers.NewVolumeServer(t, ""),
 	}
 
-	node1 := execNodeSpec{
-		id:       "node1",
-		address:  volumeServers[0].Address(),
-		diskType: diskType,
-		diskID:   0,
-		ecShards: []*master_pb.VolumeEcShardInformationMessage{
-			buildEcShardInfoExec(volumeID, collection, diskType, 0, map[uint32]int64{
-				0: 100,
-				1: 100,
-				2: 100,
-				3: 100,
-				4: 100,
-			}),
+	nodes := []nodeSpec{
+		{
+			id:       "node1",
+			address:  volumeServers[0].Address(),
+			diskType: diskType,
+			diskID:   0,
+			ecShards: []*master_pb.VolumeEcShardInformationMessage{
+				buildEcShardInfo(volumeID, collection, diskType, 0, map[uint32]int64{
+					0: 100,
+					1: 100,
+					2: 100,
+					3: 100,
+					4: 100,
+				}),
+			},
 		},
-	}
-
-	node2 := execNodeSpec{
-		id:       "node2",
-		address:  volumeServers[1].Address(),
-		diskType: diskType,
-		diskID:   0,
-		ecShards: []*master_pb.VolumeEcShardInformationMessage{
-			buildEcShardInfoExec(volumeID, collection, diskType, 0, map[uint32]int64{
-				0: 50,
-				5: 100,
-				6: 100,
-				7: 100,
-				8: 100,
-				9: 100,
-			}),
+		{
+			id:       "node2",
+			address:  volumeServers[1].Address(),
+			diskType: diskType,
+			diskID:   0,
+			ecShards: []*master_pb.VolumeEcShardInformationMessage{
+				buildEcShardInfo(volumeID, collection, diskType, 0, map[uint32]int64{
+					0: 50,
+					5: 100,
+					6: 100,
+					7: 100,
+					8: 100,
+					9: 100,
+				}),
+			},
+		},
+		{
+			id:       "node3",
+			address:  volumeServers[2].Address(),
+			diskType: diskType,
+			diskID:   0,
+		},
+		{
+			id:       "node4",
+			address:  volumeServers[3].Address(),
+			diskType: diskType,
+			diskID:   0,
 		},
 	}
 
-	node3 := execNodeSpec{
-		id:       "node3",
-		address:  volumeServers[2].Address(),
-		diskType: diskType,
-		diskID:   0,
-	}
-
-	node4 := execNodeSpec{
-		id:       "node4",
-		address:  volumeServers[3].Address(),
-		diskType: diskType,
-		diskID:   0,
-	}
-
-	topo := buildExecTopology([]execNodeSpec{node1, node2, node3, node4})
+	topo := buildTopology(nodes)
 	response := &master_pb.VolumeListResponse{TopologyInfo: topo}
 	master := pluginworkers.NewMasterServer(t, response)
 
@@ -139,58 +129,3 @@ func TestEcRepairExecutionRepairsShards(t *testing.T) {
 	require.Greater(t, deleteCalls, 0)
 	require.Greater(t, unmountCalls, 0)
 }
-
-func buildExecTopology(nodes []execNodeSpec) *master_pb.TopologyInfo {
-	dataNodes := make([]*master_pb.DataNodeInfo, 0, len(nodes))
-	for _, node := range nodes {
-		diskInfo := &master_pb.DiskInfo{
-			DiskId:         node.diskID,
-			MaxVolumeCount: 200,
-			VolumeCount:    10,
-			EcShardInfos:   node.ecShards,
-		}
-		dataNodes = append(dataNodes, &master_pb.DataNodeInfo{
-			Id:        node.id,
-			Address:   node.address,
-			DiskInfos: map[string]*master_pb.DiskInfo{node.diskType: diskInfo},
-		})
-	}
-
-	return &master_pb.TopologyInfo{
-		DataCenterInfos: []*master_pb.DataCenterInfo{
-			{
-				Id: "dc1",
-				RackInfos: []*master_pb.RackInfo{
-					{
-						Id:            "rack1",
-						DataNodeInfos: dataNodes,
-					},
-				},
-			},
-		},
-	}
-}
-
-func buildEcShardInfoExec(volumeID uint32, collection, diskType string, diskID uint32, shardSizes map[uint32]int64) *master_pb.VolumeEcShardInformationMessage {
-	shardIDs := make([]int, 0, len(shardSizes))
-	for shardID := range shardSizes {
-		shardIDs = append(shardIDs, int(shardID))
-	}
-	sort.Ints(shardIDs)
-
-	var bits uint32
-	sizes := make([]int64, 0, len(shardIDs))
-	for _, shardID := range shardIDs {
-		bits |= (1 << shardID)
-		sizes = append(sizes, shardSizes[uint32(shardID)])
-	}
-
-	return &master_pb.VolumeEcShardInformationMessage{
-		Id:          volumeID,
-		Collection:  collection,
-		EcIndexBits: bits,
-		DiskType:    diskType,
-		DiskId:      diskID,
-		ShardSizes:  sizes,
-	}
-}
diff --git a/test/plugin_workers/ec_repair/helpers_test.go b/test/plugin_workers/ec_repair/helpers_test.go
new file mode 100644
index 000000000..0d7e61e0c
--- /dev/null
+++ b/test/plugin_workers/ec_repair/helpers_test.go
@@ -0,0 +1,69 @@
+package ec_repair_test
+
+import (
+	"sort"
+
+	"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
+)
+
+type nodeSpec struct {
+	id       string
+	address  string
+	diskType string
+	diskID   uint32
+	ecShards []*master_pb.VolumeEcShardInformationMessage
+}
+
+func buildTopology(nodes []nodeSpec) *master_pb.TopologyInfo {
+	dataNodes := make([]*master_pb.DataNodeInfo, 0, len(nodes))
+	for _, node := range nodes {
+		diskInfo := &master_pb.DiskInfo{
+			DiskId:         node.diskID,
+			MaxVolumeCount: 100,
+			VolumeCount:    10,
+			EcShardInfos:   node.ecShards,
+		}
+		dataNodes = append(dataNodes, &master_pb.DataNodeInfo{
+			Id:        node.id,
+			Address:   node.address,
+			DiskInfos: map[string]*master_pb.DiskInfo{node.diskType: diskInfo},
+		})
+	}
+	return &master_pb.TopologyInfo{
+		DataCenterInfos: []*master_pb.DataCenterInfo{
+			{
+				Id: "dc1",
+				RackInfos: []*master_pb.RackInfo{
+					{
+						Id:            "rack1",
+						DataNodeInfos: dataNodes,
+					},
+				},
+			},
+		},
+	}
+}
+
+func buildEcShardInfo(volumeID uint32, collection, diskType string, diskID uint32, shardSizes map[uint32]int64) *master_pb.VolumeEcShardInformationMessage {
+	shardIDs := make([]int, 0, len(shardSizes))
+	for shardID := range shardSizes {
+		shardIDs = append(shardIDs, int(shardID))
+	}
+	sort.Ints(shardIDs)
+
+	var bits uint32
+	sizes := make([]int64, 0, len(shardIDs))
+	for _, shardID := range shardIDs {
+		bits |= (1 << shardID)
+		sizes = append(sizes, shardSizes[uint32(shardID)])
+	}
+
+	return &master_pb.VolumeEcShardInformationMessage{
+		Id:          volumeID,
+		Collection:  collection,
+		EcIndexBits: bits,
+		DiskType:    diskType,
+		DiskId:      diskID,
+		ShardSizes:  sizes,
+	}
+}