diff --git a/CMakeLists.txt b/CMakeLists.txt
index b40a9083..a8d37277 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -159,7 +159,8 @@ set (LOOT_TESTS_HEADERS "${CMAKE_SOURCE_DIR}/src/tests/fixtures.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/api/test_api.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/backend/helpers/test_language.h"
                         "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_file.h"
-                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_formid.h")
+                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_formid.h"
+                        "${CMAKE_SOURCE_DIR}/src/tests/backend/metadata/test_tag.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_tag.h b/src/tests/backend/metadata/test_tag.h
new file mode 100644
index 00000000..697e90fe
--- /dev/null
+++ b/src/tests/backend/metadata/test_tag.h
@@ -0,0 +1,177 @@
+/*  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_TAG
+#define LOOT_TEST_BACKEND_METADATA_TAG
+
+#include "backend/metadata/tag.h"
+#include "tests/fixtures.h"
+
+using loot::Tag;
+
+TEST(Tag, ConstructorsAndDataAccess) {
+    Tag tag;
+    EXPECT_EQ("", tag.Name());
+    EXPECT_TRUE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    tag = Tag("name");
+    EXPECT_EQ("name", tag.Name());
+    EXPECT_TRUE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    tag = Tag("name", false);
+    EXPECT_EQ("name", tag.Name());
+    EXPECT_FALSE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    // Not a valid condition, but not evaluating it in this test.
+    tag = Tag("name", false, "condition");
+    EXPECT_EQ("name", tag.Name());
+    EXPECT_FALSE(tag.IsAddition());
+    EXPECT_EQ("condition", tag.Condition());
+}
+
+TEST(Tag, EqualityOperator) {
+    Tag tag1, tag2;
+    EXPECT_TRUE(tag1 == tag2);
+
+    // Not valid conditions, but not evaluating them in this test.
+    tag1 = Tag("name", true, "condition1");
+    tag2 = Tag("name", true, "condition2");
+    EXPECT_TRUE(tag1 == tag2);
+
+    tag1 = Tag("name");
+    tag2 = Tag("Name");
+    EXPECT_TRUE(tag1 == tag2);
+
+    tag1 = Tag("name", true);
+    tag2 = Tag("name", false);
+    EXPECT_FALSE(tag1 == tag2);
+
+    tag1 = Tag("name1");
+    tag2 = Tag("name2");
+    EXPECT_FALSE(tag1 == tag2);
+}
+
+TEST(Tag, LessThanOperator) {
+    Tag tag1, tag2;
+    EXPECT_FALSE(tag1 < tag2);
+    EXPECT_FALSE(tag2 < tag1);
+
+    tag1 = Tag("name", true, "condition1");
+    tag2 = Tag("name", true, "condition2");
+    EXPECT_FALSE(tag1 < tag2);
+    EXPECT_FALSE(tag2 < tag1);
+
+    tag1 = Tag("name");
+    tag2 = Tag("Name");
+    EXPECT_FALSE(tag1 < tag2);
+    EXPECT_FALSE(tag2 < tag1);
+
+    tag1 = Tag("name1");
+    tag2 = Tag("name2");
+    EXPECT_TRUE(tag1 < tag2);
+    EXPECT_FALSE(tag2 < tag1);
+
+    tag1 = Tag("name", true);
+    tag2 = Tag("name", false);
+    EXPECT_TRUE(tag1 < tag2);
+    EXPECT_FALSE(tag2 < tag1);
+}
+
+TEST(Tag, YamlEmitter) {
+    Tag tag("name1");
+    YAML::Emitter e1;
+    e1 << tag;
+    EXPECT_STREQ("name1", e1.c_str());
+
+    tag = Tag("name1", false);
+    YAML::Emitter e2;
+    e2 << tag;
+    EXPECT_STREQ("-name1", e2.c_str());
+
+    tag = Tag("name1", true, "condition1");
+    YAML::Emitter e3;
+    e3 << tag;
+    EXPECT_STREQ("name: name1\ncondition: 'condition1'", e3.c_str());
+
+    tag = Tag("name1", false, "condition1");
+    YAML::Emitter e4;
+    e4 << tag;
+    EXPECT_STREQ("name: -name1\ncondition: 'condition1'", e4.c_str());
+}
+
+TEST(Tag, YamlEncode) {
+    YAML::Node node;
+
+    Tag tag("name1");
+    node = tag;
+    EXPECT_EQ("name1", node["name"].as<std::string>());
+    EXPECT_FALSE(node["condition"]);
+
+    tag = Tag("name1", false);
+    node = tag;
+    EXPECT_EQ("-name1", node["name"].as<std::string>());
+    EXPECT_FALSE(node["condition"]);
+
+    tag = Tag("name1", false, "condition1");
+    node = tag;
+    EXPECT_EQ("-name1", node["name"].as<std::string>());
+    EXPECT_EQ("condition1", node["condition"].as<std::string>());
+}
+
+TEST(Tag, YamlDecode) {
+    YAML::Node node;
+    Tag tag;
+
+    node = YAML::Load("name1");
+    tag = node.as<Tag>();
+    EXPECT_EQ("name1", tag.Name());
+    EXPECT_TRUE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    node = YAML::Load("-name1");
+    tag = node.as<Tag>();
+    EXPECT_EQ("name1", tag.Name());
+    EXPECT_FALSE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    node = YAML::Load("{name: -name1}");
+    tag = node.as<Tag>();
+    EXPECT_EQ("name1", tag.Name());
+    EXPECT_FALSE(tag.IsAddition());
+    EXPECT_EQ("", tag.Condition());
+
+    node = YAML::Load("{name: name1, condition: condition1}");
+    tag = node.as<Tag>();
+    EXPECT_EQ("name1", tag.Name());
+    EXPECT_TRUE(tag.IsAddition());
+    EXPECT_EQ("condition1", tag.Condition());
+
+    node = YAML::Load("[0, 1, 2]");
+    EXPECT_ANY_THROW(node.as<Tag>());
+}
+
+#endif
diff --git a/src/tests/main.cpp b/src/tests/main.cpp
index daf4d761..6f02526b 100644
--- a/src/tests/main.cpp
+++ b/src/tests/main.cpp
@@ -25,6 +25,7 @@
 #include "api/test_api.h"
 #include "backend/metadata/test_file.h"
 #include "backend/metadata/test_formid.h"
+#include "backend/metadata/test_tag.h"
 #include "backend/helpers/test_language.h"
 
 int main(int argc, char **argv) {