I’m also experiencing this same issue.

I’m facing the same issue. I’m using pytest and tests from only the last class are shown in sidebar. However, in the Output tab all of them are listed correctly.

Hi @Tinuxx, I am able to repro this issue. I will work on putting in a fix. Thanks!

My company updated pytest to 7.4.4 version and it’s working correctly now

This problem has been plaguing me for months. My temporary solution has been to edit the VSCode state file to disable the “pythonTestAdapter” experimental feature.

Now that I’ve looked through this page and the one for issue #22457, it seems the easiest solution is to just update my pytest plugin from 6.2.x to the latest 8.x.x version - it immediately fixed the issue.

No worries, thank you for the tech support. Testing a little bit, I found out that the issue arises when using classes with pytest. It works fine with Unittest, it does not when “converting” to pytest. When doing so, the extension only finds tests from the last class. The bug is consistent with other colleagues as well.

# First class to be tested
class Calculator:
    def add(self, a, b):
        return a + b

    def subtract(self, a, b):
        return a - b

# Second class to be tested
class StringManipulator:
    def capitalize(self, string):
        return string.capitalize()

    def reverse(self, string):
        return string[::-1]

# Test functions for Calculator
class TestCalculator:
    def test_add(self):
        calc = Calculator()
        assert calc.add(2, 3) == 5

    def test_subtract(self):
        calc = Calculator()
        assert calc.subtract(5, 3) == 2

# Test functions for StringManipulator
class TestStringManipulator:
    def test_capitalize(self):
        manipulator = StringManipulator()
        assert manipulator.capitalize("hello") == "Hello"

    def test_reverse():
        manipulator = StringManipulator()
        assert manipulator.reverse("hello") == "olleh"

In this image you can see that only the last two tests are shown: