Add coverage to tox (#9774)

Author: hugovk

.github/workflows/test-mingw.yml

@@ -22,7 +22,6 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  COVERAGE_CORE: sysmon
   FORCE_COLOR: 1
 
 jobs:

.github/workflows/test-windows.yml

@@ -22,7 +22,6 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  COVERAGE_CORE: sysmon
   FORCE_COLOR: 1
 
 jobs:

.github/workflows/test.yml

@@ -22,7 +22,6 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  COVERAGE_CORE: sysmon
   FORCE_COLOR: 1
   PIP_DISABLE_PIP_VERSION_CHECK: 1
 

tox.ini

@@ -1,10 +1,12 @@
 [tox]
 requires =
-    tox>=4.2
+    tox>=4.32
 env_list =
     lint
     mypy
-    py{py3, 315, 314, 313, 312, 311, 310}
+    py{py3}
+    py{310-315}
+    py{314-315}t
 
 [testenv]
 deps =
@@ -15,6 +17,11 @@ extras =
 commands =
     {envpython} selftest.py
     {envpython} -m pytest \
+      --cov PIL \
+      --cov Tests \
+      --cov-report html \
+      --cov-report term \
+      --cov-report xml \
       --dist worksteal \
       --numprocesses auto \
       -W always \