Running tests via Unity pending/inconclusive

After updgrading to Rider 2018.1 and running unit tests without starting Unity on my Mac give me ‘inconclusive’ result. If I start Unity, then tests stay in pending mode without any response…

Rider EAP Build #RD-181.4379.1196
Unity: 2018.1.0b12
JRE: 1.8.0_152-release-1136-b23 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.12.6

a part of stacktrace:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidCastException: Specified cast is not valid.
  at NUnit.Framework.Api.FrameworkController+LoadTestsAction..ctor (NUnit.Framework.Api.FrameworkController controller, System.Object handler) [0x00008] in <d9eafad60e01411f9e6f726dccd715f8>:0 
  at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in /Users/builder/data/lanes/5533/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/corlib/System.Reflection/MonoMethod.cs:661 

[van800]

We had a chat with @lordlycastle about his case with TestCaseSource.

		public struct MultiplyTestCase
		{
			public int result;
			public (int, int) input;
		}

		public int Multiply(int x, int y) => x * y;

		private static readonly List<MultiplyTestCase> _testCases =
				new List<MultiplyTestCase>
				{
						new MultiplyTestCase {result = 4, input = (2, 2),},
						// Fail test case.
						new MultiplyTestCase {result = 5, input = (2, 3),},
						// Success test case.
						new MultiplyTestCase {result = 9, input = (3, 3),}
				};

		[Test, TestCaseSource(nameof(_testCases))]
		public void TestMultiply(MultiplyTestCase testCase)
		{
			Assert.AreEqual(testCase.result, Multiply(testCase.input.Item1, testCase.input.Item2));
		}

In Unity it produces 3 tests with similar names: But for Rider it displays only one test. Workaround is to override a ToString() in MultiplyTestCase:

public override string ToString()
{
   return input + "=" + result;
}

In general I believe we can’t do much with it from Rider side, it requires a fix in Unity.

[trondtactile]

I can confirm this now works for me. Thanks! 👍