Replace custom test runner with pytest.

pyproject.toml

@@ -36,6 +36,10 @@ include = ["conllu"]
 [tool.setuptools.package-data]
 "conllu" = ["py.typed"]
 
+[tool.pytest.ini_options]
+markers = [
+    "integration: marks tests as integration tests (deselect with '-m \"not integration\"')",
+]
 [tool.flake8]
 ignore = "E302, W503"
 max-line-length = 119

tests/helpers.py

@@ -2,22 +2,6 @@
 from io import StringIO
 
 
-def testlabel(*labels):
-    """
-    Usage::
-        @testlabel('quick')
-        class MyTest(unittest.TestCase):
-            def test_foo(self):
-                pass
-    """
-    def inner(cls):
-        # append labels to class
-        cls._labels = set(labels) | getattr(cls, '_labels', set())
-
-        return cls
-
-    return inner
-
 def capture_print(func, args=None):
     f = StringIO()
     with redirect_stdout(f):

tests/test_integration.py

@@ -3,13 +3,15 @@
 from io import StringIO
 from textwrap import dedent
 
+import pytest
+
 from conllu import parse, parse_incr, parse_tree, parse_tree_incr
 from conllu.models import Token, TokenList
 from conllu.parser import parse_dict_value, parse_int_value
-from tests.helpers import capture_print, testlabel
+from tests.helpers import capture_print
 
 
-@testlabel("integration")
+@pytest.mark.integration
 class TestParse(unittest.TestCase):
     maxDiff = None
 
@@ -152,7 +154,7 @@ def test_parse_tree_incr(self):
         self.assertEqual(parse_tree(self.data), list(parse_tree_incr(StringIO(self.data))))
 
 
-@testlabel("integration")
+@pytest.mark.integration
 class TestTrickyCases(unittest.TestCase):
     maxDiff = None
 
@@ -175,7 +177,7 @@ def test_parse_tree_and_serialize(self):
             self.assertEqual(parse_tree(testcase)[0].serialize(), testcase_without_range_and_elided.serialize())
 
 
-@testlabel("integration")
+@pytest.mark.integration
 class TestParseCoNLLUPlus(unittest.TestCase):
     def test_parse_conllu_plus(self):
         # Note: global.columns affects both sentences
@@ -241,7 +243,7 @@ def test_parse_conllu_plus(self):
         })
 
 
-@testlabel("integration")
+@pytest.mark.integration
 class TestParseCoNLL2009(unittest.TestCase):
     def test_parse_CoNLL2009_1(self):
         data = dedent("""\

tox.ini

@@ -15,7 +15,7 @@ envlist =
   isort
   mypy
 requires =
-    virtualenv<=20.21.1
+  virtualenv<=20.21.1
 isolated_build = True
 
 [gh-actions]
@@ -29,51 +29,40 @@ python =
 fail_on_no_env = True
 
 [testenv]
-allowlist_externals =
-  find
-setenv =
-  PYTHONWARNINGS=once::DeprecationWarning
-commands =
-  python runtests.py
-
-[cleanup]
-commands =
-  find {toxinidir}/conllu -type f -name "*.pyc" -delete
-  find {toxinidir}/conllu -type d -name "__pycache__" -delete
-  find {toxinidir} -type f -path "*.egg-info*" -delete
-  find {toxinidir} -type d -path "*.egg-info" -delete
+package = wheel
+wheel_build_env = .pkg
+deps = pytest
+commands = python -m pytest {posargs}
 
 [testenv:flake8]
-# Note: Settings for flake8 exists in the setup.cfg file
+# Note: Settings for flake8 exists in the pyproject.toml file
 changedir = {toxinidir}
 deps =
   flake8
   flake8-pyproject
 commands =
   flake8 conllu tests
-  {[cleanup]commands}
 
 [testenv:isort]
-# Note: Settings for isort exists in the setup.cfg file
+# Note: Settings for isort exists in the pyproject.toml file
 changedir = {toxinidir}
 deps = isort
 commands =
   isort --check-only --diff conllu tests
-  {[cleanup]commands}
 
 [testenv:coverage]
-# Note: Settings for coverage exists in the setup.cfg file
+# Note: Settings for coverage exists in the pyproject.toml file
 changedir = {toxinidir}
-deps = coverage
+deps = pytest-coverage
 commands =
-  coverage run --branch runtests.py --blacklist integration
+  coverage run --branch -m pytest -m "not integration"
   coverage report -m --fail-under=100
-  {[cleanup]commands}
 
 [testenv:mypy]
-# Note: Settings for coverage exists in the setup.cfg file
+# Note: Settings for coverage exists in the pyproject.toml file
 changedir = {toxinidir}
-deps = mypy
+deps =
+  mypy
+  pytest
 commands =
   mypy .
-  {[cleanup]commands}