diff --git a/CMakeLists.txt b/CMakeLists.txt
index 508e42f7..d742114b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -157,7 +157,8 @@ set (LOOT_TESTS_SRC "${CMAKE_SOURCE_DIR}/src/tests/main.cpp")
 
 set (LOOT_TESTS_HEADERS "${CMAKE_SOURCE_DIR}/src/tests/fixtures.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/api/test_api.h"
-                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_file.h")
+                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_file.h"
+                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_formid.h")
 
 source_group("Header Files" FILES ${LOOT_HEADERS} ${LOOT_GUI_HEADERS} ${LOOT_API_HEADERS} ${LOOT_TESTS_HEADERS})
 
diff --git a/src/tests/backend/metadata/test_formid.h b/src/tests/backend/metadata/test_formid.h
new file mode 100644
index 00000000..9a4b05ab
--- /dev/null
+++ b/src/tests/backend/metadata/test_formid.h
@@ -0,0 +1,96 @@
+/*  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_BACKEND_METADATA_FORMID
+#define LOOT_TEST_BACKEND_METADATA_FORMID
+
+#include "backend/metadata/formid.h"
+#include "tests/fixtures.h"
+
+using loot::FormID;
+
+TEST(FormID, ConstructorsAndDataAccess) {
+    FormID fid;
+
+    EXPECT_EQ("", fid.Plugin());
+    EXPECT_EQ(0, fid.Id());
+
+    fid = FormID("plugin.esp", 1);
+    EXPECT_EQ("plugin.esp", fid.Plugin());
+    EXPECT_EQ(1, fid.Id());
+
+    std::vector<std::string> masters = {
+        "master1.esp",
+        "master2.esp",
+        "plugin.esp"
+    };
+    fid = FormID(masters, 0x01000001);
+    EXPECT_EQ("master2.esp", fid.Plugin());
+    EXPECT_EQ(1, fid.Id());
+
+    fid = FormID(masters, 0x0F000001);
+    EXPECT_EQ("plugin.esp", fid.Plugin());
+    EXPECT_EQ(1, fid.Id());
+}
+
+TEST(FormID, EqualityOperator) {
+    FormID fid1, fid2;
+    EXPECT_TRUE(fid1 == fid2);
+
+    // Not valid conditions, but not evaluating them in this test.
+    fid1 = FormID("plugin.esp", 1);
+    fid2 = FormID("plugin.esp", 1);
+    EXPECT_TRUE(fid1 == fid2);
+
+    fid1 = FormID("plugin.esp", 1);
+    fid2 = FormID("plugin.esp", 2);
+    EXPECT_FALSE(fid1 == fid2);
+
+    fid1 = FormID("plugin1.esp", 1);
+    fid2 = FormID("plugin2.esp", 1);
+    EXPECT_FALSE(fid1 == fid2);
+}
+
+TEST(FormID, LessThanOperator) {
+    FormID fid1, fid2;
+    EXPECT_FALSE(fid1 < fid2);
+    EXPECT_FALSE(fid2 < fid1);
+
+    fid1 = FormID("plugin.esp", 1);
+    fid2 = FormID("Plugin.esp", 1);
+    EXPECT_FALSE(fid1 < fid2);
+    EXPECT_FALSE(fid2 < fid1);
+
+    fid1 = FormID("plugin.esp", 1);
+    fid2 = FormID("plugin.esp", 2);
+    EXPECT_TRUE(fid1 < fid2);
+    EXPECT_FALSE(fid2 < fid1);
+
+    fid1 = FormID("plugin1.esp", 1);
+    fid2 = FormID("Plugin2.esp", 1);
+    EXPECT_TRUE(fid1 < fid2);
+    EXPECT_FALSE(fid2 < fid1);
+}
+
+#endif
diff --git a/src/tests/main.cpp b/src/tests/main.cpp
index 1e50fbfc..4cbb60f6 100644
--- a/src/tests/main.cpp
+++ b/src/tests/main.cpp
@@ -24,6 +24,7 @@
 
 #include "api/test_api.h"
 #include "backend/metadata/test_file.h"
+#include "backend/metadata/test_formid.h"
 
 int main(int argc, char **argv) {
     ::testing::InitGoogleTest(&argc, argv);