Type: Bug

Behaviour

Expected vs. Actual

On previous VSCode versions the TestExplorer would display the parametrized tests hanging from the test name's node regardless of this test being part of a test class or not. Since, at least, 2023 June release this is no longer the case and all parametrized tests will be directly appended to the class's tests.

(Perhaps related or consequence of the fix from #21541)

Steps to reproduce:

1. Create a python (discoverable) test file test_dummy.py.
2. Add the following code representing a loose test method and a wrapped one (both doing exactly the same):

import pytest

@pytest.mark.parametrize(
    "a", [pytest.param(0, id="Fist case for loose test"), pytest.param(1)]
)
def test_simple_dummy(a: int):
    assert a == 0

class TestWrapper:
    @pytest.mark.parametrize(
        "a", [pytest.param(0, id="First case for wrapped test"), pytest.param(1)]
    )
    def test_dummy(self, a: int):
        assert a == 0

1. The test cases for the "loose" test method (test_simple_dummy) will be correctly visualized in the test explorer, whilst the cases in the wrapped test class will be appended directly to the TestWrapper node.
   Result:
   
2. Expected behavior: the parametrized cases are represented always as individual nodes hanging from their parent test method regardless of the test method being part of a class or not.

Diagnostic data

• Python version (& distribution if applicable, e.g. Anaconda): 3.10.11
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Conda
• Value of the python.languageServer setting: Default

XXX

envFile: "<placeholder>"

languageServer: "Pylance"

testing
• cwd: "<placeholder>"
• pytestArgs: "<placeholder>"
• pytestEnabled: true

experiments
• optInto: ["pythonTestAdapter"]

Extension version: 2024.0.1
VS Code version: Code 1.86.0 (05047486b6df5eb8d44b2ecd70ea3bdf775fd937, 2024-01-31T10:28:19.990Z)
OS version: Windows_NT x64 10.0.19045
Modes:

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vspor879:30202332
vspor708:30202333
vspor363:30204092
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pythonregdiag2:30936856
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