refactor(test): use the expected name for initializing tests.

Originally I used setup_test because something went wrong when I used setUp.  I
wrote pytest-dev/pytest#8424 about it.  There they say
to use `-p no:nose` to disable nose interpretation.

But now I simply went back to setUp, and all seems well? Not sure what changed,
but using the expected name is better.

pylintrc

@@ -148,7 +148,7 @@ evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / stateme
 # TestCase overrides don't: setUp, tearDown
 # Nested decorator implementations: _decorator, _wrapper
 # Dispatched methods don't: _xxx__Xxxx
-no-docstring-rgx=__.*__|test[A-Z_].*|setup_test|_decorator|_wrapper|_.*__.*
+no-docstring-rgx=__.*__|test[A-Z_].*|setUp|_decorator|_wrapper|_.*__.*
 
 # Regular expression which should only match correct module names
 module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
@@ -236,7 +236,7 @@ additional-builtins=
 [CLASSES]
 
 # List of method names used to declare (i.e. assign) instance attributes.
-defining-attr-methods=__init__,__new__,setup_test,reset
+defining-attr-methods=__init__,__new__,setUp,reset
 
 
 # checks for sign of poor/misdesign:

tests/coveragetest.py

@@ -51,8 +51,8 @@ class CoverageTest(
     # Let stderr go to stderr, pytest will capture it for us.
     show_stderr = True
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
 
         # Attributes for getting info about what happened.
         self.last_command_status = None
@@ -455,8 +455,8 @@ def get_missing_arc_description(self, cov, start, end):
 class UsingModulesMixin:
     """A mixin for importing modules from tests/modules and tests/moremodules."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
 
         # Parent class saves and restores sys.path, we can just modify it.
         sys.path.append(nice_file(TESTS_DIR, "modules"))

tests/mixins.py

@@ -27,12 +27,9 @@ def connect_to_pytest(self, request, monkeypatch):
         # pylint: disable=attribute-defined-outside-init
         self._pytest_request = request
         self._monkeypatch = monkeypatch
-        self.setup_test()
+        self.setUp()
 
-    # Can't call this setUp or setup because pytest sniffs out unittest and
-    # nosetest special names, and does things with them.
-    # https://github.com/pytest-dev/pytest/issues/8424
-    def setup_test(self):
+    def setUp(self):
         """Per-test initialization. Override this as you wish."""
         pass
 

tests/test_cmdline.py

@@ -940,8 +940,8 @@ def command_line(self, argv):
                 raise AssertionError(f"Bad CoverageScriptStub: {argv!r}")
             return 0
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         old_CoverageScript = coverage.cmdline.CoverageScript
         coverage.cmdline.CoverageScript = self.CoverageScriptStub
         self.addCleanup(setattr, coverage.cmdline, 'CoverageScript', old_CoverageScript)

tests/test_files.py

@@ -144,8 +144,8 @@ def test_fnmatches_to_regex(patterns, case_insensitive, partial, matches, nomatc
 class MatcherTest(CoverageTest):
     """Tests of file matchers."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         files.set_relative_directory()
 
     def assertMatches(self, matcher, filepath, matches):

tests/test_goldtest.py

@@ -48,8 +48,8 @@ def path_regex(path):
 class CompareTest(CoverageTest):
     """Tests of goldtest.py:compare()"""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         self.addCleanup(remove_tree, ACTUAL_DIR)
 
     def test_good(self):

tests/test_html.py

@@ -111,8 +111,8 @@ def open(self, filename, mode="r"):
 class HtmlDeltaTest(HtmlTestHelpers, CoverageTest):
     """Tests of the HTML delta speed-ups."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
 
         # At least one of our tests monkey-patches the version of coverage.py,
         # so grab it here to restore it later.

tests/test_numbits.py

@@ -98,8 +98,8 @@ class NumbitsSqliteFunctionTest(CoverageTest):
 
     run_in_temp_dir = False
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         conn = sqlite3.connect(":memory:")
         register_sqlite_functions(conn)
         self.cursor = conn.cursor()

tests/test_process.py

@@ -1236,8 +1236,8 @@ def test_pydoc_coverage_coverage(self):
 class FailUnderTest(CoverageTest):
     """Tests of the --fail-under switch."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         self.make_file("forty_two_plus.py", """\
             # I have 42.857% (3/7) coverage!
             a = 1
@@ -1473,8 +1473,8 @@ def persistent_remove(path):
 class ProcessCoverageMixin:
     """Set up a .pth file to coverage-measure all sub-processes."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
 
         # Create the .pth file.
         assert PTH_DIR
@@ -1490,8 +1490,8 @@ def setup_test(self):
 class ProcessStartupTest(ProcessCoverageMixin, CoverageTest):
     """Test that we can measure coverage in sub-processes."""
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
 
         # Main will run sub.py
         self.make_file("main.py", """\

tests/test_setup.py

@@ -15,8 +15,8 @@ class SetupPyTest(CoverageTest):
 
     run_in_temp_dir = False
 
-    def setup_test(self):
-        super().setup_test()
+    def setUp(self):
+        super().setUp()
         # Force the most restrictive interpretation.
         self.set_environ('LC_ALL', 'C')