detectSoundlevel-spike/sourceCode/trunk/Code/CoreAudioTests/DeviceTopologyApi/IAudioChannelConfigTest.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;

namespace CoreAudioTests.DeviceTopologyApi
{
	/// <summary>
	/// Tests all methods of the IAudioChannelConfig interface.
	/// </summary>
	[TestClass]
	public class IAudioChannelConfigTest : TestClass<IAudioChannelConfig>
	{
		/// <summary>
		/// Tests that the channel configuration can be recieved, for each applicable part in the system.
		/// </summary>
		[TestMethod]
		public void IAudioChannelConfig_GetChannelConfig()
		{
			ExecutePartActivationTest(activation =>
			{
				var configMin = 0x1;
				var configMax = 0x46665;

				UInt32 config = UInt32.MaxValue;
				var result = activation.GetChannelConfig(out config);

				AssertCoreAudio.IsHResultOk(result);
				Assert.IsTrue((config >= configMin) && (config <= configMax), "The channel configuration value is not within the valid range.");
			});
		}

		/// <summary>
		/// Tests that the channel configuration can be set, for each applicable part in the system.
		/// </summary>
		[TestMethod]
		public void IAudioChannelConfig_SetChannelConfig()
		{
			ExecutePartActivationTest(activation =>
			{
				var context = Guid.NewGuid();
				UInt32 valOrig, valTest;
				activation.GetChannelConfig(out valOrig);

				// Test various valid values.
				var result = activation.SetChannelConfig(0x1, context);
				AssertCoreAudio.IsHResultOk(result);
				activation.GetChannelConfig(out valTest);
				Assert.AreEqual(0x1, valTest, "The channel configuration value was not set properly.");

				result = activation.SetChannelConfig(0x28, context);
				AssertCoreAudio.IsHResultOk(result);
				activation.GetChannelConfig(out valTest);
				Assert.AreEqual(0x28, valTest, "The channel configuration value was not set properly.");

				result = activation.SetChannelConfig(0x2000, context);
				AssertCoreAudio.IsHResultOk(result);
				activation.GetChannelConfig(out valTest);
				Assert.AreEqual(0x2000, valTest, "The channel configuration value was not set properly.");

				// Return to original configuration.
				result = activation.SetChannelConfig(valOrig, context);
				AssertCoreAudio.IsHResultOk(result);
			});
		}
	}
}