Fix tests

Slozier is smart

Author: Lamparter

tests/ironpython/Cases/IronPythonCases.cs

@@ -19,7 +19,7 @@ public override int Test(TestInfo testcase) {
     internal class IronPythonCaseGenerator : CommonCaseGenerator<IronPythonCases> {
         protected override IEnumerable<TestInfo> GetTests() {
             return GetFilenames(new[] {
-                System.Tuple.Create(category, "Tests"),
+                System.Tuple.Create(category, Path.Combine("tests", "python")),
                 System.Tuple.Create($"{category}.scripts", Path.Combine("eng", "scripts")),
             })
             .OrderBy(testcase => testcase.Name);