Group parametrized test by base name before '/'

[mortenfc]

I want this:
EXE_NAMES -> FIXTURES -> TESTCASEBASENAME_BEFORE'/' -> TESTNAMEAFTER'/'IFANY

And it should be able to run debugger on the tree node ESTCASEBASENAME_BEFORE'/'

I can't get this to work, and reading the source code is not very doable to me.

Best approximation of the idea I've come up with is this

"gtest": {
        "testGrouping": {
          "groupByExecutable": {
            "label": "${baseFilename}",
            "description": "${relDirpath}/",
            "groupByRegex": {
              "regexes": ["(.*?)/(.*)"],
              "label": "${match[1]}",
              "groupByRegex": {
                "regexes": ["(.*?)/(.*)"],
                "label": "${match[2]}"
              }
            }
          }
        }
      }

But it doesn't group by test case base name before -> full test case name before '/'. And it can't resolve match variables.
It seems to group all test cases with '/' inside the executable to 1 node inside another node.