Question Unable to load DLL 'libc' when using [TestFixtureSource]

I'm trying to build some tests using [TestFixtureSource], but the tests are failing with the error: Unable to load DLL 'libc'

Code (CSharp):

1.  
2. FixtureTest (0.001s)
3. ---
4. An exception was thrown while loading the test.
5. System.DllNotFoundException: Unable to load DLL 'libc'. Tried the load the following dynamic libraries:
6.   at NUnit.Framework.Internal.OSPlatform.uname (System.IntPtr buf) [0x00000] in <00000000000000000000000000000000>:0
7.   at NUnit.Framework.Internal.OSPlatform.CheckIfIsMacOSX (System.PlatformID platform) [0x00000] in <00000000000000000000000000000000>:0
8.   at NUnit.Framework.Internal.OSPlatform+<>c.<.cctor>b__92_0 () [0x00000] in <00000000000000000000000000000000>:0
9.   at System.Func`1[TResult].Invoke () [0x00000] in <00000000000000000000000000000000>:0
10.   at System.Lazy`1[T].InitValue () [0x00000] in <00000000000000000000000000000000>:0
11.   at System.Lazy`1[T].get_Value () [0x00000] in <00000000000000000000000000000000>:0
12.   at NUnit.Framework.Internal.OSPlatform.get_CurrentPlatform () [0x00000] in <00000000000000000000000000000000>:0
13.   at NUnit.Framework.Internal.PlatformHelper..ctor () [0x00000] in <00000000000000000000000000000000>:0
14.   at NUnit.Framework.TestCaseAttribute+<BuildFrom>d__63.MoveNext () [0x00000] in <00000000000000000000000000000000>:0
15.   at NUnit.Framework.Internal.Builders.DefaultTestCaseBuilder.BuildFrom (NUnit.Framework.Interfaces.IMethodInfo method, NUnit.Framework.Internal.Test parentSuite) [0x00000] in <00000000000000000000000000000000>:0
16.   at NUnit.Framework.Internal.Builders.NUnitTestFixtureBuilder.BuildTestCase (NUnit.Framework.Interfaces.IMethodInfo method, NUnit.Framework.Internal.TestSuite suite) [0x00000] in <00000000000000000000000000000000>:0
17.   at NUnit.Framework.Internal.Builders.NUnitTestFixtureBuilder.AddTestCasesToFixture (NUnit.Framework.Internal.TestFixture fixture) [0x00000] in <00000000000000000000000000000000>:0
18.   at NUnit.Framework.Internal.Builders.NUnitTestFixtureBuilder.BuildFrom (NUnit.Framework.Interfaces.ITypeInfo typeInfo) [0x00000] in <00000000000000000000000000000000>:0
19.   at NUnit.Framework.Internal.Builders.DefaultSuiteBuilder.BuildFrom (NUnit.Framework.Interfaces.ITypeInfo typeInfo) [0x00000] in <00000000000000000000000000000000>:0
20.   at NUnit.Framework.Api.DefaultTestAssemblyBuilder.GetFixtures (System.Reflection.Assembly assembly, System.Collections.IList names) [0x00000] in <00000000000000000000000000000000>:0
21.   at NUnit.Framework.Api.DefaultTestAssemblyBuilder.Build (System.Reflection.Assembly assembly, System.String assemblyPath, System.Collections.Generic.IDictionary`2[TKey,TValue] options) [0x00000] in <00000000000000000000000000000000>:0
22.   at NUnit.Framework.Api.DefaultTestAssemblyBuilder.Build (System.Reflection.Assembly assembly, System.Collections.Generic.IDictionary`2[TKey,TValue] options) [0x00000] in <00000000000000000000000000000000>:0
23.   at UnityEngine.TestTools.NUnitExtensions.UnityTestAssemblyBuilder+<BuildAsync>d__3.MoveNext () [0x00000] in <00000000000000000000000000000000>:0
24.   at UnityEngine.TestTools.NUnitExtensions.UnityTestAssemblyBuilder.Build (System.Reflection.Assembly[] assemblies, UnityEngine.TestTools.TestPlatform[] testPlatforms, System.Collections.Generic.IDictionary`2[TKey,TValue] options) [0x00000] in <00000000000000000000000000000000>:0
25.   at UnityEngine.TestRunner.NUnitExtensions.Runner.UnityTestAssemblyRunner.Load (System.Reflection.Assembly[] assemblies, UnityEngine.TestTools.TestPlatform testPlatform, System.Collections.Generic.IDictionary`2[TKey,TValue] settings) [0x00000] in <00000000000000000000000000000000>:0
26.   at UnityEngine.TestTools.TestRunner.PlaymodeTestsController+<Run>d__16.MoveNext () [0x00000] in <00000000000000000000000000000000>:0
27.   at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000000000000000000000>:0
28.   at UnityEngine.MonoBehaviour.StartCoroutineManaged2 (System.Collections.IEnumerator enumerator) [0x00000] in <00000000000000000000000000000000>:0
29.   at UnityEngine.MonoBehaviour.StartCoroutine (System.Collections.IEnumerator routine) [0x00000] in <00000000000000000000000000000000>:0
30.   at UnityEngine.TestTools.TestRunner.PlaymodeTestsController+<Start>d__12.MoveNext () [0x00000] in <00000000000000000000000000000000>:0
31.   at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000000000000000000000>:0
32. ---
33. Test Started: FixtureTest
34.  

simple test code:

Code (CSharp):

1. using NUnit.Framework;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. namespace Tests.Fixture {
7.  
8.     [TestFixture]
9.     [TestFixtureSource(typeof(FixtureTestData), "FixtureData")]
10.     public class FixtureTest {
11.  
12.  
13.         #region Fields
14.  
15.         private readonly string data;
16.  
17.         #endregion
18.  
19.         public FixtureTest(string data) {
20.  
21.             this.data = data;
22.         }
23.  
24.         #region Unity Methods
25.         #endregion
26.  
27.         #region Public Methods
28.  
29.         [TestCase("Name")]
30.         [TestCase("Main Camera")]
31.         [TestCase("Light")]
32.         public void CompareName(string name) {
33.  
34.             Assert.That(data == name);
35.         }
36.  
37.         #endregion
38.  
39.         public class FixtureTestData {
40.  
41.             public static IEnumerable FixtureData {
42.  
43.                 get {
44.  
45.                     yield return new TestFixtureData("Name");
46.                     yield return new TestFixtureData("Main Camera");
47.                     yield return new TestFixtureData("Light");
48.                 }
49.             }
50.         }
51.     }
52. }

The platform I'm targeting is Switch. Is [TestFixtureSource] not supported on Switch?