test_filter

Type: String (Pattern) | Multiple: Yes

Process only test suites whose path relative to the test_dir matches the specified pattern. See Test Hierarchy for more details.

Also, you can override this option using the pio test --filter command.

Pattern	Meaning
*	matches everything
?	matches any single character
[seq]	matches any character in seq
[!seq]	matches any character not in seq

Example

[env:myenv]
platform = native
test_filter =
  test_common
  native/*