Ignore invalid sub reg keys

Community.Wsl.Sdk.Tests/WslApiTests.cs

@@ -0,0 +1,54 @@
+using FluentAssertions;
+using NUnit.Framework;
+using System;
+using Community.Wsx.Shared;
+using FakeItEasy;
+using Microsoft.VisualBasic;
+
+namespace Community.Wsl.Sdk.Tests;
+
+public class WslApiTests
+{
+    [Test]
+    public void GetDistributionList_ShouldSkipNonGuidSubKeys()
+    {
+        var currentUser = A.Fake<IRegistryKey>();
+        var lxssKey = A.Fake<IRegistryKey>();
+
+        var validSubKey = A.Fake<IRegistryKey>();
+        var validSubKeyGuid = Guid.NewGuid().ToString();
+
+        var invalidSubKeyGuid = "invalid";
+
+        var reg = A.Fake<IRegistry>();
+
+        var randomString = "string";
+
+        A.CallTo(() => reg.GetCurrentUser()).Returns(currentUser);
+        A.CallTo(() => currentUser.OpenSubKey(A<string>.Ignored)).Returns(lxssKey);
+        A.CallTo(() => lxssKey.GetSubKeyNames()).Returns([validSubKeyGuid, invalidSubKeyGuid]);
+        A.CallTo(() => lxssKey.OpenSubKey(validSubKeyGuid)).Returns(validSubKey);
+
+        A.CallTo(() => validSubKey.GetValue<string>(A<string>.Ignored)).Returns(randomString);
+        A.CallTo(() => validSubKey.GetValue<int>(A<string>.Ignored)).Returns(0);
+        A.CallTo(() => validSubKey.GetValue(A<string>.Ignored, A<string>.Ignored)).Returns(randomString);
+
+        var wsl = new WslApi(reg);
+
+        var list = wsl.GetDistributionList();
+
+        list.Should().HaveCount(1);
+
+        list[0].Should().BeEquivalentTo(new DistroInfo()
+        {
+            DistroId = Guid.Parse(validSubKeyGuid),
+            DistroName = randomString,
+            KernelCommandLine = [randomString],
+            IsDefault = false,
+            WslVersion = 0,
+            DistroFlags = 0,
+            DefaultUid = 0,
+            DefaultEnvironmentVariables = []
+        }, (options) => options.ComparingByMembers<DistroInfo>().Excluding((info => info.BasePath)));
+    }
+}

Community.Wsl.Sdk/WslApi.cs

@@ -109,6 +109,7 @@ public IReadOnlyList<DistroInfo> GetDistributionList()
 
         return lxssKey
             .GetSubKeyNames()
+            .Where((keyName => Guid.TryParse(keyName, out _)))
             .Select(
                 (keyName) =>
                     ReadFromRegistryKey(