From 7168ea6d473f79423929390df49c14edbd2ff151 Mon Sep 17 00:00:00 2001
From: Yoshinori Ozaki <yoozaki@gmail.com>
Date: Tue, 6 Mar 2018 07:57:16 +0900
Subject: [PATCH] Minor changes in inspection and unit test.

---
 UsbInfo/UsbInfo.Tests/UsbInfoTest.cs          | 7 +++++++
 UsbInfo/UsbInfo/Interfaces/UsbSupportSpeed.cs | 6 +++++-
 UsbInfo/UsbInfo/Natives/NativeMethods.cs      | 3 ++-
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/UsbInfo/UsbInfo.Tests/UsbInfoTest.cs b/UsbInfo/UsbInfo.Tests/UsbInfoTest.cs
index 596ccb7..b9c2a55 100644
--- a/UsbInfo/UsbInfo.Tests/UsbInfoTest.cs
+++ b/UsbInfo/UsbInfo.Tests/UsbInfoTest.cs
@@ -48,6 +48,13 @@ public void TestRootHub()
             Assert.NotEmpty(usbDevices);
         }
 
+        [Fact]
+        public void TestDeviceFromVid()
+        {
+            var usbDevices = UsbInfo.Devices(0x8087);
+            Assert.NotEmpty(usbDevices);
+        }
+
         [Fact]
         public void TestDeviceFromVidPid()
         {
diff --git a/UsbInfo/UsbInfo/Interfaces/UsbSupportSpeed.cs b/UsbInfo/UsbInfo/Interfaces/UsbSupportSpeed.cs
index 4b16edd..5d8814b 100644
--- a/UsbInfo/UsbInfo/Interfaces/UsbSupportSpeed.cs
+++ b/UsbInfo/UsbInfo/Interfaces/UsbSupportSpeed.cs
@@ -1,6 +1,10 @@
-namespace UsbInfo.Interfaces
+using JetBrains.Annotations;
+
+namespace UsbInfo.Interfaces
 {
+    [UsedImplicitly(ImplicitUseTargetFlags.Members)]
     public enum UsbSupportSpeed
+
     {
         LowSpeed = 0,
         FullSpeed,
diff --git a/UsbInfo/UsbInfo/Natives/NativeMethods.cs b/UsbInfo/UsbInfo/Natives/NativeMethods.cs
index 0ee8f68..1c6d5d1 100644
--- a/UsbInfo/UsbInfo/Natives/NativeMethods.cs
+++ b/UsbInfo/UsbInfo/Natives/NativeMethods.cs
@@ -4,6 +4,7 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
 using System.Text;
+using JetBrains.Annotations;
 using Microsoft.Win32.SafeHandles;
 using UsbInfo.Natives.Types;
 
@@ -164,7 +165,7 @@ ref int RequiredSize
         [DllImport("setupapi.dll")]
         internal static extern PnpConfigrationResult CM_Get_Device_ID_Size(out int pulLen, uint dnDevInst, int uflags = 0);
 
-
+        [AssertionMethod]
         internal static void ThrowIfSetLastError(bool result)
         {
             if (!result)