add ut + newManager func

state/metadata/state_manager.go

@@ -27,6 +27,18 @@ type MetadataManager struct {
 	timestampPrefix []byte
 }
 
+func NewManager(
+	heightPrefix []byte,
+	feePrefix []byte,
+	timestampPrefix []byte,
+) MetadataManager {
+	return MetadataManager{
+		heightPrefix:    heightPrefix,
+		feePrefix:       feePrefix,
+		timestampPrefix: timestampPrefix,
+	}
+}
+
 func NewDefaultManager() MetadataManager {
 	return MetadataManager{
 		heightPrefix:    []byte{defaultHeightPrefix},

state/metadata/state_manager_test.go

@@ -0,0 +1,72 @@
+// Copyright (C) 2024, Ava Labs, Inc. All rights reserved.
+// See the file LICENSE for licensing terms.
+
+package metadata_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/ava-labs/hypersdk/state/metadata"
+)
+
+func TestConflictingPrefixes(t *testing.T) {
+	require := require.New(t)
+
+	metadataManager := metadata.NewDefaultManager()
+
+	// Test no conflicts
+	require.False(
+		metadata.HasConflictingPrefixes(
+			metadataManager,
+			[][]byte{
+				{metadata.DefaultMinimumPrefix},
+			},
+		),
+	)
+	// Test identical prefixes
+	require.True(
+		metadata.HasConflictingPrefixes(
+			metadataManager,
+			[][]byte{
+				metadataManager.HeightPrefix(),
+			},
+		),
+	)
+	// Test that prefixes (from metadataManager) contains a prefix of one of the vm prefixes
+	require.True(
+		metadata.HasConflictingPrefixes(
+			metadataManager,
+			[][]byte{
+				{0x1, 0x1},
+			},
+		),
+	)
+
+	customMetadataManager := metadata.NewManager(
+		[]byte{0x0, 0x1},
+		[]byte{0x1, 0x1},
+		[]byte{0x2, 0x1},
+	)
+
+	// Test that vmPrefix contains prefix of one of metadataPrefixes
+	require.True(
+		metadata.HasConflictingPrefixes(
+			customMetadataManager,
+			[][]byte{
+				{0x1},
+			},
+		),
+	)
+	// Test that vmPrefixes contains a duplicate
+	require.True(
+		metadata.HasConflictingPrefixes(
+			metadataManager,
+			[][]byte{
+				{metadata.DefaultMinimumPrefix},
+				{metadata.DefaultMinimumPrefix},
+			},
+		),
+	)
+}