Refactor test_util_inspect: Do not use unittest

tests/test_util_inspect.py

@@ -8,8 +8,6 @@
     :copyright: Copyright 2007-2017 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
-from unittest import TestCase
-
 import sys
 from six import PY3
 import functools
@@ -19,114 +17,117 @@ import pytest
 from sphinx.util import inspect
 
 
-class TestGetArgSpec(TestCase):
-    def test_getargspec_builtin_type(self):
-        with pytest.raises(TypeError):
-            inspect.getargspec(int)
+def test_getargspec_builtin_type():
+    with pytest.raises(TypeError):
+        inspect.getargspec(int)
 
-    def test_getargspec_partial(self):
-        def fun(a, b, c=1, d=2):
+
+def test_getargspec_partial():
+    def fun(a, b, c=1, d=2):
+        pass
+    p = functools.partial(fun, 10, c=11)
+
+    if PY3:
+        # Python 3's partial is rather cleverer than Python 2's, and we
+        # have to jump through some hoops to define an equivalent function
+        # in a way that won't confuse Python 2's parser:
+        ns = {}
+        exec(dedent("""
+            def f_expected(b, *, c=11, d=2):
+                    pass
+        """), ns)
+        f_expected = ns["f_expected"]
+    else:
+        def f_expected(b, d=2):
             pass
-        p = functools.partial(fun, 10, c=11)
+    expected = inspect.getargspec(f_expected)
 
-        if PY3:
-            # Python 3's partial is rather cleverer than Python 2's, and we
-            # have to jump through some hoops to define an equivalent function
-            # in a way that won't confuse Python 2's parser:
-            ns = {}
-            exec(dedent("""
-                def f_expected(b, *, c=11, d=2):
-                        pass
-            """), ns)
-            f_expected = ns["f_expected"]
-        else:
-            def f_expected(b, d=2):
-                pass
-        expected = inspect.getargspec(f_expected)
+    assert expected == inspect.getargspec(p)
 
-        assert expected == inspect.getargspec(p)
 
-    def test_getargspec_bound_methods(self):
-        def f_expected_unbound(self, arg1, **kwargs):
-            pass
-        expected_unbound = inspect.getargspec(f_expected_unbound)
+def test_getargspec_bound_methods():
+    def f_expected_unbound(self, arg1, **kwargs):
+        pass
+    expected_unbound = inspect.getargspec(f_expected_unbound)
 
-        def f_expected_bound(arg1, **kwargs):
-            pass
-        expected_bound = inspect.getargspec(f_expected_bound)
+    def f_expected_bound(arg1, **kwargs):
+        pass
+    expected_bound = inspect.getargspec(f_expected_bound)
 
-        class Foo:
-            def method(self, arg1, **kwargs):
-                pass
-
-        bound_method = Foo().method
-
-        @functools.wraps(bound_method)
-        def wrapped_bound_method(*args, **kwargs):
+    class Foo:
+        def method(self, arg1, **kwargs):
             pass
 
-        assert expected_unbound == inspect.getargspec(Foo.method)
-        if PY3 and sys.version_info >= (3, 4, 4):
-            # On py2, the inspect functions don't properly handle bound
-            # methods (they include a spurious 'self' argument)
-            assert expected_bound == inspect.getargspec(bound_method)
-            # On py2, the inspect functions can't properly handle wrapped
-            # functions (no __wrapped__ support)
-            assert expected_bound == inspect.getargspec(wrapped_bound_method)
+    bound_method = Foo().method
+
+    @functools.wraps(bound_method)
+    def wrapped_bound_method(*args, **kwargs):
+        pass
+
+    assert expected_unbound == inspect.getargspec(Foo.method)
+    if PY3 and sys.version_info >= (3, 4, 4):
+        # On py2, the inspect functions don't properly handle bound
+        # methods (they include a spurious 'self' argument)
+        assert expected_bound == inspect.getargspec(bound_method)
+        # On py2, the inspect functions can't properly handle wrapped
+        # functions (no __wrapped__ support)
+        assert expected_bound == inspect.getargspec(wrapped_bound_method)
 
 
-class TestSafeGetAttr(TestCase):
-    def test_safe_getattr_with_default(self):
-        class Foo(object):
-            def __getattr__(self, item):
-                raise Exception
+def test_safe_getattr_with_default():
+    class Foo(object):
+        def __getattr__(self, item):
+            raise Exception
 
-        obj = Foo()
+    obj = Foo()
 
-        result = inspect.safe_getattr(obj, 'bar', 'baz')
+    result = inspect.safe_getattr(obj, 'bar', 'baz')
 
-        assert result == 'baz'
+    assert result == 'baz'
 
-    def test_safe_getattr_with_exception(self):
-        class Foo(object):
-            def __getattr__(self, item):
-                raise Exception
 
-        obj = Foo()
+def test_safe_getattr_with_exception():
+    class Foo(object):
+        def __getattr__(self, item):
+            raise Exception
 
-        try:
-            inspect.safe_getattr(obj, 'bar')
-        except AttributeError as exc:
-            self.assertEqual(exc.args[0], 'bar')
-        else:
-            self.fail('AttributeError not raised')
+    obj = Foo()
 
-    def test_safe_getattr_with_property_exception(self):
-        class Foo(object):
-            @property
-            def bar(self):
-                raise Exception
+    try:
+        inspect.safe_getattr(obj, 'bar')
+    except AttributeError as exc:
+        assert exc.args[0] == 'bar'
+    else:
+        pytest.fail('AttributeError not raised')
 
-        obj = Foo()
 
-        try:
-            inspect.safe_getattr(obj, 'bar')
-        except AttributeError as exc:
-            self.assertEqual(exc.args[0], 'bar')
-        else:
-            self.fail('AttributeError not raised')
+def test_safe_getattr_with_property_exception():
+    class Foo(object):
+        @property
+        def bar(self):
+            raise Exception
 
-    def test_safe_getattr_with___dict___override(self):
-        class Foo(object):
-            @property
-            def __dict__(self):
-                raise Exception
+    obj = Foo()
 
-        obj = Foo()
+    try:
+        inspect.safe_getattr(obj, 'bar')
+    except AttributeError as exc:
+        assert exc.args[0] == 'bar'
+    else:
+        pytest.fail('AttributeError not raised')
 
-        try:
-            inspect.safe_getattr(obj, 'bar')
-        except AttributeError as exc:
-            self.assertEqual(exc.args[0], 'bar')
-        else:
-            self.fail('AttributeError not raised')
+
+def test_safe_getattr_with___dict___override():
+    class Foo(object):
+        @property
+        def __dict__(self):
+            raise Exception
+
+    obj = Foo()
+
+    try:
+        inspect.safe_getattr(obj, 'bar')
+    except AttributeError as exc:
+        assert exc.args[0] == 'bar'
+    else:
+        pytest.fail('AttributeError not raised')