From 88e3bc88b4ca09d51dd551b62e64e3c149cd4e0c Mon Sep 17 00:00:00 2001
From: Sergio Guadarrama <sguada@gmail.com>
Date: Fri, 16 Jan 2015 13:20:26 -0800
Subject: [PATCH] test db wrappers

---
 src/caffe/test/test_db.cpp | 134 +++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 src/caffe/test/test_db.cpp

diff --git a/src/caffe/test/test_db.cpp b/src/caffe/test/test_db.cpp
new file mode 100644
index 00000000000..5b2ac230a0b
--- /dev/null
+++ b/src/caffe/test/test_db.cpp
@@ -0,0 +1,134 @@
+#include <string>
+
+#include "boost/scoped_ptr.hpp"
+#include "gtest/gtest.h"
+
+#include "caffe/common.hpp"
+#include "caffe/proto/caffe.pb.h"
+#include "caffe/util/db.hpp"
+#include "caffe/util/io.hpp"
+
+#include "caffe/test/test_caffe_main.hpp"
+
+namespace caffe {
+
+using boost::scoped_ptr;
+
+template <typename TypeParam>
+class DBTest : public ::testing::Test {
+ protected:
+  DBTest()
+      : backend_(TypeParam::backend),
+      root_images_(string(EXAMPLES_SOURCE_DIR) + string("images/")) {}
+
+  virtual void SetUp() {
+    MakeTempDir(&source_);
+    source_ += "/db";
+    string keys[] = {"cat.jpg", "fish-bike.jpg"};
+    LOG(INFO) << "Using temporary db " << source_;
+    scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+    db->Open(this->source_, db::NEW);
+    scoped_ptr<db::Transaction> txn(db->NewTransaction());
+    for (int i = 0; i < 2; ++i) {
+      Datum datum;
+      ReadImageToDatum(root_images_ + keys[i], i, &datum);
+      string out;
+      CHECK(datum.SerializeToString(&out));
+      txn->Put(keys[i], out);
+    }
+    txn->Commit();
+  }
+
+  virtual ~DBTest() { }
+
+  DataParameter_DB backend_;
+  string source_;
+  string root_images_;
+};
+
+struct TypeLevelDB {
+  static DataParameter_DB backend;
+};
+DataParameter_DB TypeLevelDB::backend = DataParameter_DB_LEVELDB;
+
+struct TypeLMDB {
+  static DataParameter_DB backend;
+};
+DataParameter_DB TypeLMDB::backend = DataParameter_DB_LMDB;
+
+// typedef ::testing::Types<TypeLmdb> TestTypes;
+typedef ::testing::Types<TypeLevelDB, TypeLMDB> TestTypes;
+
+TYPED_TEST_CASE(DBTest, TestTypes);
+
+TYPED_TEST(DBTest, TestGetDB) {
+  scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+}
+
+TYPED_TEST(DBTest, TestNext) {
+  scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+  db->Open(this->source_, db::READ);
+  scoped_ptr<db::Cursor> cursor(db->NewCursor());
+  EXPECT_TRUE(cursor->valid());
+  cursor->Next();
+  EXPECT_TRUE(cursor->valid());
+  cursor->Next();
+  EXPECT_FALSE(cursor->valid());
+}
+
+TYPED_TEST(DBTest, TestSeekToFirst) {
+  scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+  db->Open(this->source_, db::READ);
+  scoped_ptr<db::Cursor> cursor(db->NewCursor());
+  cursor->Next();
+  cursor->SeekToFirst();
+  EXPECT_TRUE(cursor->valid());
+  string key = cursor->key();
+  Datum datum;
+  datum.ParseFromString(cursor->value());
+  EXPECT_EQ(key, "cat.jpg");
+  EXPECT_EQ(datum.channels(), 3);
+  EXPECT_EQ(datum.height(), 360);
+  EXPECT_EQ(datum.width(), 480);
+}
+
+TYPED_TEST(DBTest, TestKeyValue) {
+  scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+  db->Open(this->source_, db::READ);
+  scoped_ptr<db::Cursor> cursor(db->NewCursor());
+  EXPECT_TRUE(cursor->valid());
+  string key = cursor->key();
+  Datum datum;
+  datum.ParseFromString(cursor->value());
+  EXPECT_EQ(key, "cat.jpg");
+  EXPECT_EQ(datum.channels(), 3);
+  EXPECT_EQ(datum.height(), 360);
+  EXPECT_EQ(datum.width(), 480);
+  cursor->Next();
+  EXPECT_TRUE(cursor->valid());
+  key = cursor->key();
+  datum.ParseFromString(cursor->value());
+  EXPECT_EQ(key, "fish-bike.jpg");
+  EXPECT_EQ(datum.channels(), 3);
+  EXPECT_EQ(datum.height(), 323);
+  EXPECT_EQ(datum.width(), 481);
+  cursor->Next();
+  EXPECT_FALSE(cursor->valid());
+}
+
+TYPED_TEST(DBTest, TestWrite) {
+  scoped_ptr<db::DB> db(db::GetDB(TypeParam::backend));
+  db->Open(this->source_, db::WRITE);
+  scoped_ptr<db::Transaction> txn(db->NewTransaction());
+  Datum datum;
+  ReadFileToDatum(this->root_images_ + "cat.jpg", 0, &datum);
+  string out;
+  CHECK(datum.SerializeToString(&out));
+  txn->Put("cat.jpg", out);
+  ReadFileToDatum(this->root_images_ + "fish-bike.jpg", 1, &datum);
+  CHECK(datum.SerializeToString(&out));
+  txn->Put("fish-bike.jpg", out);
+  txn->Commit();
+}
+
+}  // namespace caffe