diff --git a/test/test_led_description.cpp b/test/test_led_description.cpp
new file mode 100644
index 0000000..708794b
--- /dev/null
+++ b/test/test_led_description.cpp
@@ -0,0 +1,92 @@
+/**
+ * Copyright © 2024 9elements
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "interfaces/internal_interface.hpp"
+#include "sysfs.hpp"
+
+#include <gtest/gtest.h>
+
+using namespace phosphor::led;
+
+static LedDescr runtest(const std::string& name)
+{
+    std::string path = devParent + name;
+    SysfsLed led(path);
+    return led.getLedDescr();
+}
+
+TEST(LEDDescr, Has4PartsInvalid)
+{
+    LedDescr d = runtest("devicename:color:function:part4");
+
+    ASSERT_EQ("devicename", d.devicename);
+    ASSERT_EQ("color", d.color);
+    ASSERT_EQ("function", d.function);
+}
+
+TEST(LEDDescr, Has3Parts)
+{
+    LedDescr d = runtest("devicename:color:function");
+
+    ASSERT_EQ("devicename", d.devicename);
+    ASSERT_EQ("color", d.color);
+    ASSERT_EQ("function", d.function);
+}
+
+TEST(LEDDescr, Has2PartsColorFunction)
+{
+    LedDescr d = runtest("red:fault");
+
+    ASSERT_EQ(std::nullopt, d.devicename);
+    ASSERT_EQ("red", d.color);
+    ASSERT_EQ("fault", d.function);
+}
+
+TEST(LEDDescr, Has2PartsDevicenameFunction)
+{
+    LedDescr d = runtest("input9::capslock");
+
+    ASSERT_EQ("input9", d.devicename);
+    ASSERT_EQ(std::nullopt, d.color);
+    ASSERT_EQ("capslock", d.function);
+}
+
+TEST(LEDDescr, Has1PartColor)
+{
+    LedDescr d = runtest("green:");
+
+    ASSERT_EQ(std::nullopt, d.devicename);
+    ASSERT_EQ("green", d.color);
+    ASSERT_EQ(std::nullopt, d.function);
+}
+
+TEST(LEDDescr, Has1PartFunction)
+{
+    LedDescr d = runtest(":boot");
+
+    ASSERT_EQ(std::nullopt, d.devicename);
+    ASSERT_EQ(std::nullopt, d.color);
+    ASSERT_EQ("boot", d.function);
+}
+
+TEST(LEDDescr, Has1PartLabel)
+{
+    LedDescr d = runtest("identify");
+
+    ASSERT_EQ("identify", d.devicename);
+    ASSERT_EQ(std::nullopt, d.color);
+    ASSERT_EQ(std::nullopt, d.function);
+}