swarm: network rewrite merge

swarm/storage/hasherstore_test.go

@@ -0,0 +1,118 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package storage
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/swarm/storage/encryption"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+func TestHasherStore(t *testing.T) {
+	var tests = []struct {
+		chunkLength int
+		toEncrypt   bool
+	}{
+		{10, false},
+		{100, false},
+		{1000, false},
+		{4096, false},
+		{10, true},
+		{100, true},
+		{1000, true},
+		{4096, true},
+	}
+
+	for _, tt := range tests {
+		chunkStore := NewMapChunkStore()
+		hasherStore := NewHasherStore(chunkStore, MakeHashFunc(DefaultHash), tt.toEncrypt)
+
+		// Put two random chunks into the hasherStore
+		chunkData1 := GenerateRandomChunk(int64(tt.chunkLength)).SData
+		key1, err := hasherStore.Put(chunkData1)
+		if err != nil {
+			t.Fatalf("Expected no error got \"%v\"", err)
+		}
+
+		chunkData2 := GenerateRandomChunk(int64(tt.chunkLength)).SData
+		key2, err := hasherStore.Put(chunkData2)
+		if err != nil {
+			t.Fatalf("Expected no error got \"%v\"", err)
+		}
+
+		hasherStore.Close()
+
+		// Wait until chunks are really stored
+		hasherStore.Wait()
+
+		// Get the first chunk
+		retrievedChunkData1, err := hasherStore.Get(key1)
+		if err != nil {
+			t.Fatalf("Expected no error, got \"%v\"", err)
+		}
+
+		// Retrieved data should be same as the original
+		if !bytes.Equal(chunkData1, retrievedChunkData1) {
+			t.Fatalf("Expected retrieved chunk data %v, got %v", common.Bytes2Hex(chunkData1), common.Bytes2Hex(retrievedChunkData1))
+		}
+
+		// Get the second chunk
+		retrievedChunkData2, err := hasherStore.Get(key2)
+		if err != nil {
+			t.Fatalf("Expected no error, got \"%v\"", err)
+		}
+
+		// Retrieved data should be same as the original
+		if !bytes.Equal(chunkData2, retrievedChunkData2) {
+			t.Fatalf("Expected retrieved chunk data %v, got %v", common.Bytes2Hex(chunkData2), common.Bytes2Hex(retrievedChunkData2))
+		}
+
+		hash1, encryptionKey1, err := parseReference(key1, hasherStore.hashSize)
+		if err != nil {
+			t.Fatalf("Expected no error, got \"%v\"", err)
+		}
+
+		if tt.toEncrypt {
+			if encryptionKey1 == nil {
+				t.Fatal("Expected non-nil encryption key, got nil")
+			} else if len(encryptionKey1) != encryption.KeyLength {
+				t.Fatalf("Expected encryption key length %v, got %v", encryption.KeyLength, len(encryptionKey1))
+			}
+		}
+		if !tt.toEncrypt && encryptionKey1 != nil {
+			t.Fatalf("Expected nil encryption key, got key with length %v", len(encryptionKey1))
+		}
+
+		// Check if chunk data in store is encrypted or not
+		chunkInStore, err := chunkStore.Get(hash1)
+		if err != nil {
+			t.Fatalf("Expected no error got \"%v\"", err)
+		}
+
+		chunkDataInStore := chunkInStore.SData
+
+		if tt.toEncrypt && bytes.Equal(chunkData1, chunkDataInStore) {
+			t.Fatalf("Chunk expected to be encrypted but it is stored without encryption")
+		}
+		if !tt.toEncrypt && !bytes.Equal(chunkData1, chunkDataInStore) {
+			t.Fatalf("Chunk expected to be not encrypted but stored content is different. Expected %v got %v", common.Bytes2Hex(chunkData1), common.Bytes2Hex(chunkDataInStore))
+		}
+	}
+}