diff --git a/test/implementations/encrypted/CipherTest.cpp b/test/implementations/encrypted/CipherTest.cpp
index ec84837b..620e60db 100644
--- a/test/implementations/encrypted/CipherTest.cpp
+++ b/test/implementations/encrypted/CipherTest.cpp
@@ -3,14 +3,14 @@
 #include "../../../implementations/encrypted/ciphers/AES256_GCM.h"
 #include "../../../implementations/encrypted/ciphers/Cipher.h"
 
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 #include <messmer/cpp-utils/data/Data.h>
 
  #include <boost/optional/optional_io.hpp>
 
 using namespace blockstore::encrypted;
 using cpputils::Data;
-using cpputils::DataBlockFixture;
+using cpputils::DataFixture;
 
 template<class Cipher>
 class CipherTest: public ::testing::Test {
@@ -19,7 +19,7 @@ public:
   typename Cipher::EncryptionKey encKey = createRandomKey();
 
   static typename Cipher::EncryptionKey createRandomKey(int seed = 0) {
-    DataBlockFixture data(Cipher::EncryptionKey::BINARY_LENGTH, seed);
+    Data data = DataFixture::generate(Cipher::EncryptionKey::BINARY_LENGTH, seed);
     return Cipher::EncryptionKey::FromBinary(data.data());
   }
 
@@ -50,16 +50,11 @@ public:
   }
 
   static Data CreateZeroes(unsigned int size) {
-    Data zeroes(size);
-    zeroes.FillWithZeroes();
-    return zeroes;
+    return std::move(Data(size).FillWithZeroes());
   }
 
   static Data CreateData(unsigned int size, unsigned int seed = 0) {
-    DataBlockFixture data(size, seed);
-    Data result(size);
-    std::memcpy(result.data(), data.data(), size);
-    return result;
+    return DataFixture::generate(size, seed);
   }
 };
 
diff --git a/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockFlushTest.cpp b/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockFlushTest.cpp
index 9ac4c602..2ef0b2a2 100644
--- a/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockFlushTest.cpp
+++ b/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockFlushTest.cpp
@@ -1,6 +1,6 @@
 #include "../../../../implementations/ondisk/FileAlreadyExistsException.h"
 #include "../../../../implementations/ondisk/OnDiskBlock.h"
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 #include "google/gtest/gtest.h"
 
 #include <messmer/cpp-utils/tempfile/TempFile.h>
@@ -12,7 +12,7 @@ using ::testing::Values;
 
 using std::unique_ptr;
 using cpputils::Data;
-using cpputils::DataBlockFixture;
+using cpputils::DataFixture;
 using cpputils::TempFile;
 using cpputils::TempDir;
 
@@ -28,13 +28,13 @@ public:
   : dir(),
     key(Key::FromString("1491BB4932A389EE14BC7090AC772972")),
     file(dir.path() / key.ToString(), false),
-    randomData(GetParam()) {
+    randomData(DataFixture::generate(GetParam())) {
   }
   TempDir dir;
   Key key;
   TempFile file;
 
-  DataBlockFixture randomData;
+  Data randomData;
 
   unique_ptr<OnDiskBlock> CreateBlockAndLoadItFromDisk() {
     {
diff --git a/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockLoadTest.cpp b/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockLoadTest.cpp
index 364a2033..8fdf8ff6 100644
--- a/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockLoadTest.cpp
+++ b/test/implementations/ondisk/OnDiskBlockTest/OnDiskBlockLoadTest.cpp
@@ -1,5 +1,5 @@
 #include "../../../../implementations/ondisk/OnDiskBlock.h"
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 #include "../../../../utils/FileDoesntExistException.h"
 #include "google/gtest/gtest.h"
 
@@ -16,7 +16,7 @@ using std::ofstream;
 using std::unique_ptr;
 using std::ios;
 using cpputils::Data;
-using cpputils::DataBlockFixture;
+using cpputils::DataFixture;
 using cpputils::TempFile;
 using cpputils::TempDir;
 
@@ -41,18 +41,15 @@ public:
     data.StoreToFile(file.path());
   }
 
-  void StoreData(const DataBlockFixture &data) {
-    //TODO Implement data.StoreToFile(filepath) instead
-    Data dataobj(data.size());
-    std::memcpy(dataobj.data(), data.data(), data.size());
-    dataobj.StoreToFile(file.path());
+  void StoreData(const Data &data) {
+    data.StoreToFile(file.path());
   }
 
   unique_ptr<OnDiskBlock> LoadBlock() {
     return OnDiskBlock::LoadFromDisk(dir.path(), key);
   }
 
-  void EXPECT_BLOCK_DATA_EQ(const DataBlockFixture &expected, const OnDiskBlock &actual) {
+  void EXPECT_BLOCK_DATA_EQ(const Data &expected, const OnDiskBlock &actual) {
     EXPECT_EQ(expected.size(), actual.size());
     EXPECT_EQ(0, std::memcmp(expected.data(), actual.data(), expected.size()));
   }
@@ -68,7 +65,7 @@ TEST_P(OnDiskBlockLoadTest, FileSizeIsCorrect) {
 }
 
 TEST_P(OnDiskBlockLoadTest, LoadedDataIsCorrect) {
-  DataBlockFixture randomData(GetParam());
+  Data randomData = DataFixture::generate(GetParam());
   StoreData(randomData);
 
   auto block = LoadBlock();
diff --git a/test/interface/helpers/BlockStoreWithRandomKeysTest.cpp b/test/interface/helpers/BlockStoreWithRandomKeysTest.cpp
index 78a8535b..d4c0513e 100644
--- a/test/interface/helpers/BlockStoreWithRandomKeysTest.cpp
+++ b/test/interface/helpers/BlockStoreWithRandomKeysTest.cpp
@@ -1,7 +1,7 @@
 #include "../../../interface/helpers/BlockStoreWithRandomKeys.h"
 #include "google/gtest/gtest.h"
 #include "google/gmock/gmock.h"
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 
 using ::testing::Test;
 using ::testing::_;
@@ -14,7 +14,7 @@ using std::string;
 using std::unique_ptr;
 using std::make_unique;
 using cpputils::Data;
-using cpputils::DataBlockFixture;
+using cpputils::DataFixture;
 
 using namespace blockstore;
 
@@ -49,7 +49,7 @@ public:
   const blockstore::Key key = Key::FromString("1491BB4932A389EE14BC7090AC772972");
 
   Data createDataWithSize(size_t size) {
-	DataBlockFixture fixture(size);
+	Data fixture(DataFixture::generate(size));
 	Data data(size);
 	std::memcpy(data.data(), fixture.data(), size);
 	return data;
diff --git a/test/testutils/BlockStoreTest_Data.h b/test/testutils/BlockStoreTest_Data.h
index 30acbff1..daac33d8 100644
--- a/test/testutils/BlockStoreTest_Data.h
+++ b/test/testutils/BlockStoreTest_Data.h
@@ -12,11 +12,8 @@ public:
   BlockStoreDataParametrizedTest(std::unique_ptr<blockstore::BlockStore> blockStore_, const DataRange &testData_)
     : blockStore(std::move(blockStore_)),
       testData(testData_),
-      foregroundData(testData.count), backgroundData(testData.blocksize) {
-    cpputils::DataBlockFixture _foregroundData(testData.count);
-    cpputils::DataBlockFixture _backgroundData(testData.blocksize);
-    std::memcpy(foregroundData.data(), _foregroundData.data(), foregroundData.size());
-    std::memcpy(backgroundData.data(), _backgroundData.data(), backgroundData.size());
+      foregroundData(cpputils::DataFixture::generate(testData.count, 0)),
+      backgroundData(cpputils::DataFixture::generate(testData.blocksize, 1)) {
   }
 
   void TestWriteAndReadImmediately() {
diff --git a/test/testutils/BlockStoreTest_Size.h b/test/testutils/BlockStoreTest_Size.h
index 02679e20..20ee3fbb 100644
--- a/test/testutils/BlockStoreTest_Size.h
+++ b/test/testutils/BlockStoreTest_Size.h
@@ -1,7 +1,7 @@
 // This file is meant to be included by BlockStoreTest.h only
 
 #include <messmer/cpp-utils/data/Data.h>
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 
 class BlockStoreSizeParameterizedTest {
 public:
@@ -19,39 +19,34 @@ public:
   }
 
   void TestCreatedBlockData() {
-	cpputils::DataBlockFixture dataFixture(size);
-	cpputils::Data data(size);
-	std::memcpy(data.data(), dataFixture.data(), size);
-	auto block = blockStore->create(data);
-	EXPECT_EQ(0, std::memcmp(dataFixture.data(), block->data(), size));
-
+    cpputils::Data data = cpputils::DataFixture::generate(size);
+    auto block = blockStore->create(data);
+    EXPECT_EQ(0, std::memcmp(data.data(), block->data(), size));
   }
 
   void TestLoadingUnchangedBlockData() {
-	cpputils::DataBlockFixture dataFixture(size);
-	cpputils::Data data(size);
-	std::memcpy(data.data(), dataFixture.data(), size);
-	blockstore::Key key = blockStore->create(data)->key();
+    cpputils::Data data = cpputils::DataFixture::generate(size);
+    blockstore::Key key = blockStore->create(data)->key();
     auto loaded_block = blockStore->load(key);
-    EXPECT_EQ(0, std::memcmp(dataFixture.data(), loaded_block->data(), size));
+    EXPECT_EQ(0, std::memcmp(data.data(), loaded_block->data(), size));
   }
 
   void TestLoadedBlockIsCorrect() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     auto loaded_block = StoreDataToBlockAndLoadIt(randomData);
     EXPECT_EQ(size, loaded_block->size());
     EXPECT_EQ(0, std::memcmp(randomData.data(), loaded_block->data(), size));
   }
 
   void TestLoadedBlockIsCorrectWhenLoadedDirectlyAfterFlushing() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     auto loaded_block = StoreDataToBlockAndLoadItDirectlyAfterFlushing(randomData);
     EXPECT_EQ(size, loaded_block->size());
     EXPECT_EQ(0, std::memcmp(randomData.data(), loaded_block->data(), size));
   }
 
   void TestAfterCreate_FlushingDoesntChangeBlock() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     auto block =  CreateBlock();
     WriteDataToBlock(block.get(), randomData);
     block->flush();
@@ -60,7 +55,7 @@ public:
   }
 
   void TestAfterLoad_FlushingDoesntChangeBlock() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     auto block =  CreateBlockAndLoadIt();
     WriteDataToBlock(block.get(), randomData);
     block->flush();
@@ -69,7 +64,7 @@ public:
   }
 
   void TestAfterCreate_FlushesWhenDestructed() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     blockstore::Key key = key;
     {
       auto block = blockStore->create(cpputils::Data(size));
@@ -81,7 +76,7 @@ public:
   }
 
   void TestAfterLoad_FlushesWhenDestructed() {
-    cpputils::DataBlockFixture randomData(size);
+    cpputils::Data randomData = cpputils::DataFixture::generate(size);
     blockstore::Key key = key;
     {
       key = CreateBlock()->key();
@@ -109,20 +104,16 @@ private:
     return ZEROES;
   }
 
-  std::unique_ptr<blockstore::Block> StoreDataToBlockAndLoadIt(const cpputils::DataBlockFixture &data) {
+  std::unique_ptr<blockstore::Block> StoreDataToBlockAndLoadIt(const cpputils::Data &data) {
     blockstore::Key key = StoreDataToBlockAndGetKey(data);
     return blockStore->load(key);
   }
 
-  blockstore::Key StoreDataToBlockAndGetKey(const cpputils::DataBlockFixture &dataFixture) {
-	cpputils::Data data(dataFixture.size());
-	std::memcpy(data.data(), dataFixture.data(), dataFixture.size());
+  blockstore::Key StoreDataToBlockAndGetKey(const cpputils::Data &data) {
     return blockStore->create(data)->key();
   }
 
-  std::unique_ptr<blockstore::Block> StoreDataToBlockAndLoadItDirectlyAfterFlushing(const cpputils::DataBlockFixture &dataFixture) {
-	cpputils::Data data(dataFixture.size());
-	std::memcpy(data.data(), dataFixture.data(), dataFixture.size());
+  std::unique_ptr<blockstore::Block> StoreDataToBlockAndLoadItDirectlyAfterFlushing(const cpputils::Data &data) {
     auto block = blockStore->create(data);
     block->flush();
     return blockStore->load(block->key());
@@ -137,11 +128,11 @@ private:
     return blockStore->create(cpputils::Data(size));
   }
 
-  void WriteDataToBlock(blockstore::Block *block, const cpputils::DataBlockFixture &randomData) {
+  void WriteDataToBlock(blockstore::Block *block, const cpputils::Data &randomData) {
     block->write(randomData.data(), 0, randomData.size());
   }
 
-  void EXPECT_BLOCK_DATA_CORRECT(const blockstore::Block &block, const cpputils::DataBlockFixture &randomData) {
+  void EXPECT_BLOCK_DATA_CORRECT(const blockstore::Block &block, const cpputils::Data &randomData) {
     EXPECT_EQ(randomData.size(), block.size());
     EXPECT_EQ(0, std::memcmp(randomData.data(), block.data(), randomData.size()));
   }
diff --git a/test/utils/BlockStoreUtilsTest.cpp b/test/utils/BlockStoreUtilsTest.cpp
index 4d0aca82..adc72ad8 100644
--- a/test/utils/BlockStoreUtilsTest.cpp
+++ b/test/utils/BlockStoreUtilsTest.cpp
@@ -1,5 +1,5 @@
 #include "../../implementations/testfake/FakeBlockStore.h"
-#include <messmer/cpp-utils/data/DataBlockFixture.h>
+#include <messmer/cpp-utils/data/DataFixture.h>
 #include "../../utils/BlockStoreUtils.h"
 #include "google/gtest/gtest.h"
 
@@ -12,7 +12,7 @@ using ::testing::Values;
 using std::make_unique;
 using std::unique_ptr;
 using cpputils::Data;
-using cpputils::DataBlockFixture;
+using cpputils::DataFixture;
 
 using namespace blockstore;
 using namespace blockstore::utils;
@@ -24,13 +24,13 @@ public:
   unsigned int SIZE = 1024 * 1024;
   BlockStoreUtilsTest():
     ZEROES(SIZE),
-    dataFixture(SIZE),
+    dataFixture(DataFixture::generate(SIZE)),
     blockStore(make_unique<FakeBlockStore>()) {
     ZEROES.FillWithZeroes();
   }
 
   Data ZEROES;
-  DataBlockFixture dataFixture;
+  Data dataFixture;
   unique_ptr<BlockStore> blockStore;
 };