tests: faster on 3.12+ and reduce warnings (#872)

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

Author: henryiii

Diff for: pyproject.toml

@@ -95,6 +95,10 @@ source = [
   "build",
   "tests",
 ]
+disable_warnings = [
+  "module-not-measured",  # Triggers in multithreaded context on build
+  "no-sysmon",
+]
 
 [tool.coverage.report]
 exclude_also = [

Diff for: tox.ini

@@ -23,6 +23,7 @@ pass_env =
     PYTEST_*
     TERM
 set_env =
+    COVERAGE_CORE = sysmon
     COVERAGE_FILE = {toxworkdir}/.coverage.{envname}
     PYPY3323BUG = 1
     PYTHONWARNDEFAULTENCODING = 1