diff --git a/CMakeLists.txt b/CMakeLists.txt
index d9c5a988..887a2f6d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -160,11 +160,13 @@ set (LOOT_VALIDATOR_SRC ${LOOT_SRC}
 
 set (LOOT_VALIDATOR_HEADERS ${LOOT_HEADERS})
 
-set (LOOT_TESTS_SRC "${CMAKE_SOURCE_DIR}/src/tests/main.cpp")
+set (LOOT_TESTS_SRC "${CMAKE_SOURCE_DIR}/src/api/loot_db.cpp"
+				    "${CMAKE_SOURCE_DIR}/src/tests/main.cpp")
 
 set (LOOT_TESTS_HEADERS "${CMAKE_SOURCE_DIR}/src/tests/fixtures.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/printers.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/api/test_api.h"
+                        "${CMAKE_SOURCE_DIR}/src/tests/api/test_loot_db.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/backend/game/test_game.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/backend/game/test_game_cache.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/backend/game/test_game_settings.h"
diff --git a/src/api/loot_db.h b/src/api/loot_db.h
index 34786d87..22d52ca0 100644
--- a/src/api/loot_db.h
+++ b/src/api/loot_db.h
@@ -62,7 +62,7 @@ struct loot_db : public loot::Game {
         std::transform(begin(plugins),
                        end(plugins),
                        begin(pluginNames),
-                       [](const loot::Plugin& plugin) {
+                       [](const loot::PluginMetadata& plugin) {
             return plugin.Name();
         });
 
diff --git a/src/tests/api/test_loot_db.h b/src/tests/api/test_loot_db.h
new file mode 100644
index 00000000..17e1c703
--- /dev/null
+++ b/src/tests/api/test_loot_db.h
@@ -0,0 +1,264 @@
+/*  LOOT
+
+A load order optimisation tool for Oblivion, Skyrim, Fallout 3 and
+Fallout: New Vegas.
+
+Copyright (C) 2014-2015    WrinklyNinja
+
+This file is part of LOOT.
+
+LOOT is free software: you can redistribute
+it and/or modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation, either version 3 of
+the License, or (at your option) any later version.
+
+LOOT 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with LOOT.  If not, see
+<http://www.gnu.org/licenses/>.
+*/
+
+#ifndef LOOT_TEST_API_LOOT_DB_INT
+#define LOOT_TEST_API_LOOT_DB_INT
+
+#include "api/loot_db.h"
+#include "backend/game/game_settings.h"
+#include "tests/fixtures.h"
+
+namespace loot {
+    namespace test {
+        class loot_db_test : public SkyrimTest {
+        protected:
+            virtual void SetUp() {
+                SkyrimTest::SetUp();
+
+                db = new loot_db(Game::tes5, dataPath.parent_path().string().c_str(), localPath.string().c_str());
+            }
+        };
+
+        TEST_F(loot_db_test, settingRevisionIdStringShouldCopyIt) {
+            db->setRevisionIdString("id");
+            EXPECT_STREQ("id", db->getRevisionIdString());
+        }
+
+        TEST_F(loot_db_test, settingRevisionDateStringShouldCopyIt) {
+            db->setRevisionDateString("date");
+            EXPECT_STREQ("date", db->getRevisionDateString());
+        }
+
+        TEST_F(loot_db_test, settingPluginNamesShouldCopyThem) {
+            db->setPluginNames(std::vector<PluginMetadata>({
+                PluginMetadata("Blank.esm"),
+                PluginMetadata("Blank.esp"),
+            }));
+
+            EXPECT_EQ(2, db->getPluginNames().size());
+            EXPECT_STREQ("Blank.esm", db->getPluginNames()[0]);
+            EXPECT_STREQ("Blank.esp", db->getPluginNames()[1]);
+        }
+
+        TEST_F(loot_db_test, settingPluginNamesTwiceShouldOverwriteTheFirstDataSet) {
+            db->setPluginNames(std::vector<PluginMetadata>({
+                PluginMetadata("Blank.esm"),
+                PluginMetadata("Blank.esp"),
+            }));
+            db->setPluginNames(std::vector<PluginMetadata>({
+                PluginMetadata("Blank - Different.esm"),
+                PluginMetadata("Blank - Different.esp"),
+            }));
+
+            EXPECT_EQ(2, db->getPluginNames().size());
+            EXPECT_STREQ("Blank - Different.esm", db->getPluginNames()[0]);
+            EXPECT_STREQ("Blank - Different.esp", db->getPluginNames()[1]);
+        }
+
+        TEST_F(loot_db_test, addingNewBashTagsToTheMapShouldAppendThem) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            EXPECT_EQ(2, db->getBashTagMap().size());
+            EXPECT_STREQ("C.Climate", db->getBashTagMap()[0]);
+            EXPECT_STREQ("Relev", db->getBashTagMap()[1]);
+        }
+
+        TEST_F(loot_db_test, addingAnExistingBashTagToTheMapShouldNotDuplicateIt) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+                "C.Climate",
+            });
+
+            EXPECT_EQ(2, db->getBashTagMap().size());
+            EXPECT_STREQ("C.Climate", db->getBashTagMap()[0]);
+            EXPECT_STREQ("Relev", db->getBashTagMap()[1]);
+        }
+
+        TEST_F(loot_db_test, gettingABashTagsUidForATagThatIsNotInTheMapShouldThrow) {
+            EXPECT_ANY_THROW(db->getBashTagUid("Relev"));
+        }
+
+        TEST_F(loot_db_test, gettingABashTagsUidShouldReturnItsTagMapIndex) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            EXPECT_EQ(1, db->getBashTagUid("Relev"));
+        }
+
+        TEST_F(loot_db_test, clearingAnEmptyBashTagMapShouldDoNothing) {
+            EXPECT_NO_THROW(db->clearBashTagMap());
+        }
+
+        TEST_F(loot_db_test, clearingABashTagMapShouldEmptyIt) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            db->clearBashTagMap();
+            EXPECT_TRUE(db->getBashTagMap().empty());
+        }
+
+        TEST_F(loot_db_test, clearingABashTagMapShouldAffectExistingReferences) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            auto& bashTagMap = db->getBashTagMap();
+            db->clearBashTagMap();
+            EXPECT_TRUE(bashTagMap.empty());
+        }
+
+        TEST_F(loot_db_test, settingAddedTagsWithNoTagMapShouldThrow) {
+            EXPECT_ANY_THROW(db->setAddedTags({
+                "Relev",
+            }));
+        }
+
+        TEST_F(loot_db_test, gettingSetAddedTagsShouldReturnTheirUids) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            db->setAddedTags({
+                "Relev",
+            });
+
+            EXPECT_EQ(std::vector<unsigned int>({
+                1,
+            }), db->getAddedTagIds());
+        }
+
+        TEST_F(loot_db_test, settingRemovedTagsWithNoTagMapShouldThrow) {
+            EXPECT_ANY_THROW(db->setRemovedTags({
+                "Relev",
+            }));
+        }
+
+        TEST_F(loot_db_test, gettingSetRemovedTagsShouldReturnTheirUids) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+
+            db->setRemovedTags({
+                "Relev",
+            });
+
+            EXPECT_EQ(std::vector<unsigned int>({
+                1,
+            }), db->getRemovedTagIds());
+        }
+
+        TEST_F(loot_db_test, settingPluginMessagesShouldCopyThem) {
+            db->setPluginMessages(std::list<Message>({
+                Message(Message::warn, "Test 1"),
+                Message(Message::error, "Test 2"),
+            }));
+
+            EXPECT_EQ(2, db->getPluginMessages().size());
+            EXPECT_EQ(Message::warn, db->getPluginMessages()[0].type);
+            EXPECT_STREQ("Test 1", db->getPluginMessages()[0].message);
+            EXPECT_EQ(Message::error, db->getPluginMessages()[1].type);
+            EXPECT_STREQ("Test 2", db->getPluginMessages()[1].message);
+        }
+
+        TEST_F(loot_db_test, settingPluginMessagesTwiceShouldOverwriteTheFirstDataSet) {
+            db->setPluginMessages(std::list<Message>({
+                Message(Message::warn, "Test 1"),
+                Message(Message::error, "Test 2"),
+            }));
+            db->setPluginMessages(std::list<Message>({
+                Message(Message::error, "Test 3"),
+                Message(Message::warn, "Test 4"),
+                Message(Message::say, "Test 5"),
+            }));
+
+            EXPECT_EQ(3, db->getPluginMessages().size());
+            EXPECT_EQ(Message::error, db->getPluginMessages()[0].type);
+            EXPECT_STREQ("Test 3", db->getPluginMessages()[0].message);
+            EXPECT_EQ(Message::warn, db->getPluginMessages()[1].type);
+            EXPECT_STREQ("Test 4", db->getPluginMessages()[1].message);
+            EXPECT_EQ(Message::say, db->getPluginMessages()[2].type);
+            EXPECT_STREQ("Test 5", db->getPluginMessages()[2].message);
+        }
+
+        TEST_F(loot_db_test, clearingArraysShouldEmptyPluginNamesTagIdsAndMessages) {
+            db->setPluginMessages(std::list<Message>({
+                Message(Message::warn, "Test 1"),
+                Message(Message::error, "Test 2"),
+            }));
+            db->setPluginNames(std::vector<PluginMetadata>({
+                PluginMetadata("Blank.esm"),
+                PluginMetadata("Blank.esp"),
+            }));
+
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+            db->setAddedTags({
+                "Relev",
+            });
+            db->setRemovedTags({
+                "Relev",
+            });
+
+            ASSERT_FALSE(db->getPluginMessages().empty());
+            ASSERT_FALSE(db->getPluginNames().empty());
+            ASSERT_FALSE(db->getAddedTagIds().empty());
+            ASSERT_FALSE(db->getRemovedTagIds().empty());
+            ASSERT_FALSE(db->getBashTagMap().empty());
+
+            EXPECT_NO_THROW(db->clearArrays());
+
+            EXPECT_TRUE(db->getPluginMessages().empty());
+            EXPECT_TRUE(db->getPluginNames().empty());
+            EXPECT_TRUE(db->getAddedTagIds().empty());
+            EXPECT_TRUE(db->getRemovedTagIds().empty());
+        }
+
+        TEST_F(loot_db_test, clearingArraysShouldNotEmptyBashTagMap) {
+            db->addBashTagsToMap({
+                "C.Climate",
+                "Relev",
+            });
+            ASSERT_FALSE(db->getBashTagMap().empty());
+
+            EXPECT_NO_THROW(db->clearArrays());
+
+            EXPECT_FALSE(db->getBashTagMap().empty());
+        }
+    }
+}
+
+#endif
diff --git a/src/tests/main.cpp b/src/tests/main.cpp
index 50d3a3ce..94bab5a6 100644
--- a/src/tests/main.cpp
+++ b/src/tests/main.cpp
@@ -28,6 +28,7 @@
 #endif
 
 #include "api/test_api.h"
+#include "api/test_loot_db.h"
 #include "backend/game/test_game.h"
 #include "backend/game/test_game_settings.h"
 #include "backend/game/test_load_order_handler.h"