detectSoundlevel-spike/sourceCode/trunk/Code/CoreAudioTests/DeviceTopologyApi/IAudioAutoGainControlTest.cs

// -----------------------------------------
// SoundScribe (TM) and related software.
// 
// Copyright (C) 2007-2011 Vannatech
// http://www.vannatech.com
// All rights reserved.
// 
// This source code is subject to the MIT License.
// http://www.opensource.org/licenses/mit-license.php
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// -----------------------------------------

using System;
using CoreAudioTests.Common;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Vannatech.CoreAudio.Interfaces;
using Vannatech.CoreAudio.Constants;
using Vannatech.CoreAudio.Externals;

namespace CoreAudioTests.DeviceTopologyApi
{
	/// <summary>
	/// Tests all methods of the IAudioAutoGainControl interface.
	/// </summary>
	[TestClass]
	public class IAudioAutoGainControlTest : TestClass<IAudioAutoGainControl>
	{
		/// <summary>
		/// Tests that the hardware audio gain control enabled state can be received, for each applicable part in the system.
		/// </summary>
		[TestMethod]
		public void IAudioAutoGainControl_GetEnabled()
		{
			ExecutePartActivationTest(activation =>
			{
				bool valOne = true, valTwo = false;

				var result = activation.GetEnabled(out valOne);
				AssertCoreAudio.IsHResultOk(result);

				result = activation.GetEnabled(out valTwo);
				AssertCoreAudio.IsHResultOk(result);

				Assert.AreEqual(valOne, valTwo, "The enabled state of the audio gain control was not received.");
			});
		}

		/// <summary>
		/// Tests that the hardware audio gain control enabled state can be set, for each applicable part in the system.
		/// </summary>
		[TestMethod]
		public void IAudioAutoGainControl_SetEnabled()
		{
			ExecutePartActivationTest(activation =>
			{
				Guid context = Guid.NewGuid();
				bool enabledState, origState;
				activation.GetEnabled(out origState);

				// ensure the state can be set to true
				var result = activation.SetEnabled(!origState, context);
				AssertCoreAudio.IsHResultOk(result);

				activation.GetEnabled(out enabledState);
				Assert.AreEqual(!origState, enabledState, "The enabled state was not set properly.");

				// ensure the state can be set to false
				result = activation.SetEnabled(origState, context);
				AssertCoreAudio.IsHResultOk(result);
			});
		}
	}
}