Passing subtests no longer turn the output yellow (similar to warnings)

Fix pytest-dev#86

CHANGELOG.rst

@@ -4,9 +4,13 @@ CHANGELOG
 UNRELEASED
 ----------
 
+* Passed subtests no longer turn the pytest output to yellow (as if warnings have been issued) (`#86`_). Thanks to `Andrew-Brock`_ for providing the solution.
 * Now the ``msg`` contents of a subtest is displayed when running pytest with ``-v`` (`#6`_).
 
 .. _#6: https://github.com/pytest-dev/pytest-subtests/issues/6
+.. _#86: https://github.com/pytest-dev/pytest-subtests/issues/86
+
+.. _`Andrew-Brock`: https://github.com/Andrew-Brock
 
 0.10.0 (2022-02-15)
 -------------------

pytest_subtests.py

@@ -97,6 +97,27 @@ def pytest_configure(config):
     TestCaseFunction.addSubTest = _addSubTest
     TestCaseFunction.failfast = False
 
+    # Hack (#86): the terminal does not know about the "subtests"
+    # status, so it will by default turn the output to yellow.
+    # This forcibly adds the new 'subtests' status.
+    import _pytest.terminal
+
+    new_types = tuple(
+        f"subtests {outcome}" for outcome in ("passed", "failed", "skipped")
+    )
+    # We need to check if we are not re-adding because we run our own tests
+    # with pytester in-process mode, so this will be called multiple times.
+    if new_types[0] not in _pytest.terminal.KNOWN_TYPES:
+        _pytest.terminal.KNOWN_TYPES = _pytest.terminal.KNOWN_TYPES + new_types
+
+    _pytest.terminal._color_for_type.update(
+        {
+            f"subtests {outcome}": _pytest.terminal._color_for_type[outcome]
+            for outcome in ("passed", "failed", "skipped")
+            if outcome in _pytest.terminal._color_for_type
+        }
+    )
+
 
 def pytest_unconfigure():
     if hasattr(TestCaseFunction, "addSubTest"):