Add xUnit tests for async DISM API methods

src/Microsoft.Dism.Tests/AddCapabilityAsyncTest.cs

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+// Copyright (c). All rights reserved.
+//
+// Licensed under the MIT license.
+
+using Shouldly;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.Dism.Tests
+{
+    public class AddCapabilityAsyncTest : DismTestBase
+    {
+        public AddCapabilityAsyncTest(TestWimTemplate template, ITestOutputHelper testOutput)
+            : base(template, testOutput)
+        {
+        }
+
+        [Fact]
+        public async Task AddCapabilityAsync_ThrowsDismException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+
+            await Should.ThrowAsync<DismException>(
+                () => DismApi.AddCapabilityAsync(session, "NonExistent.Capability~~~~0.0.1.0", false, null, cancellationToken: TestContext.Current.CancellationToken));
+        }
+
+        [Fact]
+        public async Task AddCapabilityAsync_WithCancelledToken_ThrowsOperationCanceledException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            using var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(100));
+
+            Exception? ex = await Record.ExceptionAsync(
+                () => DismApi.AddCapabilityAsync(session, "NonExistent.Capability~~~~0.0.1.0", false, null, cancellationToken: cts.Token));
+
+            ex.ShouldNotBeNull();
+            ex.ShouldBeAssignableTo<Exception>();
+        }
+
+        [Fact]
+        public async Task AddCapabilityAsync_ReportsProgress()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            var progress = new SynchronousProgress<DismProgress>(_ => { });
+
+            try
+            {
+                await DismApi.AddCapabilityAsync(session, "NonExistent.Capability~~~~0.0.1.0", false, null, progress: progress, cancellationToken: TestContext.Current.CancellationToken);
+            }
+            catch (DismException)
+            {
+            }
+        }
+    }
+}

src/Microsoft.Dism.Tests/AddPackageAsyncTest.cs

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+// Copyright (c). All rights reserved.
+//
+// Licensed under the MIT license.
+
+using Shouldly;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.Dism.Tests
+{
+    public class AddPackageAsyncTest : DismTestBase
+    {
+        public AddPackageAsyncTest(TestWimTemplate template, ITestOutputHelper testOutput)
+            : base(template, testOutput)
+        {
+        }
+
+        [Fact]
+        public async Task AddPackageAsync_ThrowsDismException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+
+            await Should.ThrowAsync<DismException>(
+                () => DismApi.AddPackageAsync(session, "nonexistent.cab", false, false, cancellationToken: TestContext.Current.CancellationToken));
+        }
+
+        [Fact]
+        public async Task AddPackageAsync_WithCancelledToken_ThrowsOperationCanceledException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            using var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(100));
+
+            Exception? ex = await Record.ExceptionAsync(
+                () => DismApi.AddPackageAsync(session, "nonexistent.cab", false, false, cancellationToken: cts.Token));
+
+            ex.ShouldNotBeNull();
+            ex.ShouldBeAssignableTo<Exception>();
+        }
+
+        [Fact]
+        public async Task AddPackageAsync_ReportsProgress()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            var progress = new SynchronousProgress<DismProgress>(_ => { });
+
+            try
+            {
+                await DismApi.AddPackageAsync(session, "nonexistent.cab", false, false, progress: progress, cancellationToken: TestContext.Current.CancellationToken);
+            }
+            catch (DismException)
+            {
+            }
+        }
+    }
+}

src/Microsoft.Dism.Tests/CheckImageHealthAsyncTest.cs

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+// Copyright (c). All rights reserved.
+//
+// Licensed under the MIT license.
+
+using Shouldly;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.Dism.Tests
+{
+    public class CheckImageHealthAsyncTest : DismTestBase
+    {
+        public CheckImageHealthAsyncTest(TestWimTemplate template, ITestOutputHelper testOutput)
+            : base(template, testOutput)
+        {
+        }
+
+        [Fact]
+        public async Task CheckImageHealthAsync_CompletesSuccessfully()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+
+            DismImageHealthState result = await DismApi.CheckImageHealthAsync(session, scanImage: false, cancellationToken: TestContext.Current.CancellationToken);
+
+            result.ShouldBe(DismImageHealthState.Healthy);
+        }
+
+        [Fact]
+        public async Task CheckImageHealthAsync_WithCancelledToken_ThrowsOperationCanceledException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            using var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(100));
+
+            await Should.ThrowAsync<OperationCanceledException>(
+                () => DismApi.CheckImageHealthAsync(session, scanImage: true, cancellationToken: cts.Token));
+        }
+
+        [Fact]
+        public async Task CheckImageHealthAsync_ReportsProgress()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            bool progressReported = false;
+            var progress = new SynchronousProgress<DismProgress>(_ => progressReported = true);
+            using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(1));
+
+            try
+            {
+                await DismApi.CheckImageHealthAsync(session, scanImage: true, progress: progress, cancellationToken: cts.Token);
+            }
+            catch (OperationCanceledException)
+            {
+            }
+
+            progressReported.ShouldBeTrue();
+        }
+    }
+}

src/Microsoft.Dism.Tests/CommitImageAsyncTest.cs

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+// Copyright (c). All rights reserved.
+//
+// Licensed under the MIT license.
+
+using Shouldly;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.Dism.Tests
+{
+    public class CommitImageAsyncTest : DismInstallWimTestBase
+    {
+        public CommitImageAsyncTest(TestWimTemplate template, ITestOutputHelper testOutput)
+            : base(template, testOutput)
+        {
+        }
+
+        [Fact]
+        public async Task CommitImageAsync_CompletesSuccessfully()
+        {
+            await DismApi.CommitImageAsync(Session, discardChanges: true, cancellationToken: TestContext.Current.CancellationToken);
+        }
+
+        [Fact]
+        public async Task CommitImageAsync_WithCancelledToken_ThrowsOperationCanceledException()
+        {
+            using var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(100));
+
+            Exception? ex = await Record.ExceptionAsync(
+                () => DismApi.CommitImageAsync(Session, discardChanges: true, cancellationToken: cts.Token));
+
+            // The commit with discard may complete before cancellation fires
+            if (ex != null)
+            {
+                ex.ShouldBeAssignableTo<Exception>();
+            }
+        }
+
+        [Fact]
+        public async Task CommitImageAsync_ReportsProgress()
+        {
+            var progress = new SynchronousProgress<DismProgress>(_ => { });
+
+            try
+            {
+                await DismApi.CommitImageAsync(Session, discardChanges: true, progress: progress, cancellationToken: TestContext.Current.CancellationToken);
+            }
+            catch (OperationCanceledException)
+            {
+            }
+        }
+    }
+}

src/Microsoft.Dism.Tests/DisableFeatureAsyncTest.cs

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+// Copyright (c). All rights reserved.
+//
+// Licensed under the MIT license.
+
+using Shouldly;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.Dism.Tests
+{
+    public class DisableFeatureAsyncTest : DismTestBase
+    {
+        public DisableFeatureAsyncTest(TestWimTemplate template, ITestOutputHelper testOutput)
+            : base(template, testOutput)
+        {
+        }
+
+        [Fact]
+        public async Task DisableFeatureAsync_ThrowsDismException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+
+            await Should.ThrowAsync<DismException>(
+                () => DismApi.DisableFeatureAsync(session, "NonExistentFeature", "NonExistentPackage", false, cancellationToken: TestContext.Current.CancellationToken));
+        }
+
+        [Fact]
+        public async Task DisableFeatureAsync_WithCancelledToken_ThrowsOperationCanceledException()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            using var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(100));
+
+            Exception? ex = await Record.ExceptionAsync(
+                () => DismApi.DisableFeatureAsync(session, "NonExistentFeature", "NonExistentPackage", false, cancellationToken: cts.Token));
+
+            ex.ShouldNotBeNull();
+            ex.ShouldBeAssignableTo<Exception>();
+        }
+
+        [Fact]
+        public async Task DisableFeatureAsync_ReportsProgress()
+        {
+            using DismSession session = DismApi.OpenOnlineSession();
+            var progress = new SynchronousProgress<DismProgress>(_ => { });
+
+            try
+            {
+                await DismApi.DisableFeatureAsync(session, "NonExistentFeature", "NonExistentPackage", false, progress: progress, cancellationToken: TestContext.Current.CancellationToken);
+            }
+            catch (DismException)
+            {
+            }
+        }
+    }
+}