From 1151d4db47e2a96e85a52b58e2809fc77b0b2d11 Mon Sep 17 00:00:00 2001
From: Sebastian Messmer <mail@smessmer.de>
Date: Sat, 6 Dec 2014 11:51:57 +0100
Subject: [PATCH] Written Testcases for OnDiskBlobStore

---
 .../blobstore/ondisk/OnDiskBlobStoreTest.cpp  | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 src/test/blobstore/ondisk/OnDiskBlobStoreTest.cpp

diff --git a/src/test/blobstore/ondisk/OnDiskBlobStoreTest.cpp b/src/test/blobstore/ondisk/OnDiskBlobStoreTest.cpp
new file mode 100644
index 00000000..1376f8ad
--- /dev/null
+++ b/src/test/blobstore/ondisk/OnDiskBlobStoreTest.cpp
@@ -0,0 +1,71 @@
+#include "gtest/gtest.h"
+
+#include "blobstore/implementations/ondisk/OnDiskBlobStore.h"
+
+#include "test/testutils/TempDir.h"
+#include "test/testutils/VirtualTestFile.h"
+
+using ::testing::Test;
+using ::testing::WithParamInterface;
+using ::testing::Values;
+
+using std::string;
+using std::unique_ptr;
+
+using blobstore::Blob;
+using namespace blobstore::ondisk;
+
+class OnDiskBlobStoreTest: public Test {
+public:
+  TempDir dir;
+  OnDiskBlobStore blobStore;
+
+  OnDiskBlobStoreTest(): dir(), blobStore(dir.path()) {}
+};
+
+class OnDiskBlobStoreSizeTest: public OnDiskBlobStoreTest, public WithParamInterface<size_t> {
+public:
+  unique_ptr<Blob> StoreDataToBlobAndLoadIt(const VirtualTestFile &data) {
+    string key = StoreDataToBlobAndGetKey(data);
+    return blobStore.load(key);
+  }
+
+  string StoreDataToBlobAndGetKey(const VirtualTestFile &data) {
+    auto blob = blobStore.create(GetParam());
+    std::memcpy(blob.blob->data(), data.data(), data.size());
+    return blob.key;
+  }
+
+  unique_ptr<Blob> StoreDataToBlobAndLoadItDirectlyAfterFlushing(const VirtualTestFile &data) {
+    auto blob = blobStore.create(GetParam());
+    std::memcpy(blob.blob->data(), data.data(), data.size());
+    blob.blob->flush();
+    return blobStore.load(blob.key);
+  }
+};
+INSTANTIATE_TEST_CASE_P(OnDiskBlobStoreSizeTest, OnDiskBlobStoreSizeTest, Values(0, 1, 1024, 4096, 10*1024*1024));
+
+TEST_P(OnDiskBlobStoreSizeTest, CreateBlobAndCheckSize) {
+  auto blob = blobStore.create(GetParam());
+  EXPECT_EQ(GetParam(), blob.blob->size());
+}
+
+TEST_P(OnDiskBlobStoreSizeTest, LoadedBlobIsCorrect) {
+  VirtualTestFile randomData(GetParam());
+  auto loaded_blob = StoreDataToBlobAndLoadIt(randomData);
+  EXPECT_EQ(randomData.size(), loaded_blob->size());
+  EXPECT_EQ(0, std::memcmp(randomData.data(), loaded_blob->data(), randomData.size()));
+}
+
+TEST_P(OnDiskBlobStoreSizeTest, LoadedBlobIsCorrectWhenLoadedDirectlyAfterFlushing) {
+  VirtualTestFile randomData(GetParam());
+  auto loaded_blob = StoreDataToBlobAndLoadItDirectlyAfterFlushing(randomData);
+  EXPECT_EQ(randomData.size(), loaded_blob->size());
+  EXPECT_EQ(0, std::memcmp(randomData.data(), loaded_blob->data(), randomData.size()));
+}
+
+TEST_F(OnDiskBlobStoreTest, TwoCreatedBlobsHaveDifferentKeys) {
+  auto blob1 = blobStore.create(1024);
+  auto blob2 = blobStore.create(1024);
+  EXPECT_NE(blob1.key, blob2.key);
+}