Python 3.10

Author: nedbat

setup.py

@@ -33,6 +33,7 @@
 Programming Language :: Python :: 3.7
 Programming Language :: Python :: 3.8
 Programming Language :: Python :: 3.9
+Programming Language :: Python :: 3.10
 Programming Language :: Python :: Implementation :: CPython
 Programming Language :: Python :: Implementation :: PyPy
 Topic :: Software Development :: Quality Assurance

tests/test_plugins.py

@@ -921,7 +921,11 @@ def coverage_init(reg, options):
                 reg.add_file_tracer(Plugin())
             """)
         self.run_bad_plugin(
-            "bad_plugin", "Plugin", our_error=False, excmsg="an integer is required",
+            "bad_plugin", "Plugin", our_error=False,
+            excmsgs=[
+                "an integer is required",
+                "cannot be interpreted as an integer",
+            ],
         )
 
 

tox.ini

@@ -2,7 +2,7 @@
 # For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
 
 [tox]
-envlist = py{27,35,36,37,38,39}, pypy{2,3}, doc, lint
+envlist = py{27,35,36,37,38,39,310}, pypy{2,3}, doc, lint
 skip_missing_interpreters = {env:COVERAGE_SKIP_MISSING_INTERPRETERS:True}
 toxworkdir = {env:TOXWORKDIR:.tox}
 
@@ -47,9 +47,6 @@ commands =
     python setup.py --quiet build_ext --inplace
     python igor.py test_with_tracer c {posargs}
 
-[testenv:py39]
-basepython = python3.9
-
 [testenv:anypy]
 # For running against my own builds of CPython, or any other specific Python.
 basepython = {env:COVERAGE_PYTHON}