Use ruff instead of black, flake8, autoflake, pyupgrade

Config adapted from pytest.

testing/acceptance_test.py

@@ -266,8 +266,8 @@ class TestDistribution:
             "-pfoobarplugin",
             "--foobar=123",
             "--dist=load",
-            "--rsyncdir=%(subdir)s" % locals(),
-            "--tx=popen//chdir=%(dest)s" % locals(),
+            f"--rsyncdir={subdir}",
+            f"--tx=popen//chdir={dest}",
             p,
         )
         assert result.ret == 0
@@ -657,9 +657,7 @@ def test_crashing_item(pytester, when) -> None:
 
         def test_ok():
             pass
-    """.format(
-            **code
-        )
+    """.format(**code)
     )
     passes = 2 if when == "teardown" else 1
     result = pytester.runpytest("-n2", p)
@@ -1513,9 +1511,7 @@ class TestLocking:
 
     FILE_LOCK = filelock.FileLock("test.lock")
 
-    """ + (
-        (_test_content * 4) % ("A", "B", "C", "D")
-    )
+    """ + ((_test_content * 4) % ("A", "B", "C", "D"))
 
     @pytest.mark.parametrize("scope", ["each", "load", "loadscope", "loadfile", "no"])
     def test_single_file(self, pytester, scope) -> None:

testing/test_dsession.py

@@ -165,7 +165,7 @@ class TestLoadScheduling:
 
         for i in range(7, 16):
             sched.mark_test_complete(node1, i - 3)
-            assert node1.sent == [0, 1] + list(range(4, i))
+            assert node1.sent == [0, 1, *range(4, i)]
             assert node2.sent == [2, 3]
             assert sched.pending == list(range(i, 16))
 
@@ -187,7 +187,7 @@ class TestLoadScheduling:
 
         for complete_index, first_pending in enumerate(range(5, 16)):
             sched.mark_test_complete(node1, node1.sent[complete_index])
-            assert node1.sent == [0, 1] + list(range(4, first_pending))
+            assert node1.sent == [0, 1, *range(4, first_pending)]
             assert node2.sent == [2, 3]
             assert sched.pending == list(range(first_pending, 16))
 
@@ -251,9 +251,7 @@ class TestLoadScheduling:
         """
 
         class CollectHook:
-            """
-            Dummy hook that stores collection reports.
-            """
+            """Dummy hook that stores collection reports."""
 
             def __init__(self):
                 self.reports = []
@@ -295,7 +293,7 @@ class TestWorkStealingScheduling:
         sched.schedule()
         assert not sched.pending
         assert not sched.tests_finished
-        assert node1.sent == list(range(0, 8))
+        assert node1.sent == list(range(8))
         assert node2.sent == list(range(8, 16))
         for i in range(8):
             sched.mark_test_complete(node1, node1.sent[i])
@@ -315,7 +313,7 @@ class TestWorkStealingScheduling:
         sched.add_node_collection(node2, collection)
         assert sched.collection_is_completed
         sched.schedule()
-        assert node1.sent == list(range(0, 8))
+        assert node1.sent == list(range(8))
         assert node2.sent == list(range(8, 16))
         for i in range(8):
             sched.mark_test_complete(node1, node1.sent[i])

testing/test_plugin.py

@@ -13,7 +13,7 @@ from xdist.workermanage import NodeManager
 def monkeypatch_3_cpus(monkeypatch: pytest.MonkeyPatch):
     """Make pytest-xdist believe the system has 3 CPUs."""
     # block import
-    monkeypatch.setitem(sys.modules, "psutil", None)  # type: ignore
+    monkeypatch.setitem(sys.modules, "psutil", None)
     monkeypatch.delattr(os, "sched_getaffinity", raising=False)
     monkeypatch.setattr(os, "cpu_count", lambda: 3)
 

testing/test_remote.py

@@ -16,9 +16,9 @@ WAIT_TIMEOUT = 10.0
 def check_marshallable(d):
     try:
         marshal.dumps(d)
-    except ValueError:
+    except ValueError as e:
         pprint.pprint(d)
-        raise ValueError("not marshallable")
+        raise ValueError("not marshallable") from e
 
 
 class EventCall:
@@ -164,7 +164,7 @@ class TestWorkerInteractor:
         worker.sendcommand("runtests_all")
         worker.sendcommand("shutdown")
         for func in "::test_func", "::test_func2":
-            for i in range(3):  # setup/call/teardown
+            for _ in range(3):  # setup/call/teardown
                 ev = worker.popevent("testreport")
                 assert ev.name == "testreport"
                 rep = unserialize_report(ev.kwargs["data"])
@@ -329,12 +329,10 @@ def test_remote_mainargv(pytester: pytest.Pytester) -> None:
     outer_argv = sys.argv
 
     pytester.makepyfile(
-        """
+        f"""
         def test_mainargv(request):
-            assert request.config.workerinput["mainargv"] == {!r}
-        """.format(
-            outer_argv
-        )
+            assert request.config.workerinput["mainargv"] == {outer_argv!r}
+        """
     )
     result = pytester.runpytest("-n1")
     assert result.ret == 0