Tests: get rid of classes in test files.

Class usage came from the unittest framework and it was always redundant
after migration to the pytest.  This commit removes classes from files
containing tests to make them more readable and understandable.

test/test_python_basic.py

@@ -1,127 +1,134 @@
-from unit.control import TestControl
+from unit.control import Control
 
 prerequisites = {'modules': {'python': 'any'}}
 
+client = Control()
 
-class TestPythonBasic(TestControl):
+conf_app = {
+    "app": {
+        "type": "python",
+        "processes": {"spare": 0},
+        "path": "/app",
+        "module": "wsgi",
+    }
+}
 
-    conf_app = {
+conf_basic = {
+    "listeners": {"*:7080": {"pass": "applications/app"}},
+    "applications": conf_app,
+}
+
+
+def test_python_get_empty():
+    assert client.conf_get() == {'listeners': {}, 'applications': {}}
+    assert client.conf_get('listeners') == {}
+    assert client.conf_get('applications') == {}
+
+
+def test_python_get_applications():
+    client.conf(conf_app, 'applications')
+
+    conf = client.conf_get()
+
+    assert conf['listeners'] == {}, 'listeners'
+    assert conf['applications'] == {
         "app": {
             "type": "python",
             "processes": {"spare": 0},
             "path": "/app",
             "module": "wsgi",
         }
-    }
+    }, 'applications'
 
-    conf_basic = {
-        "listeners": {"*:7080": {"pass": "applications/app"}},
-        "applications": conf_app,
-    }
-
-    def test_python_get_empty(self):
-        assert self.conf_get() == {'listeners': {}, 'applications': {}}
-        assert self.conf_get('listeners') == {}
-        assert self.conf_get('applications') == {}
-
-    def test_python_get_applications(self):
-        self.conf(self.conf_app, 'applications')
-
-        conf = self.conf_get()
-
-        assert conf['listeners'] == {}, 'listeners'
-        assert conf['applications'] == {
-            "app": {
-                "type": "python",
-                "processes": {"spare": 0},
-                "path": "/app",
-                "module": "wsgi",
-            }
-        }, 'applications'
-
-        assert self.conf_get('applications') == {
-            "app": {
-                "type": "python",
-                "processes": {"spare": 0},
-                "path": "/app",
-                "module": "wsgi",
-            }
-        }, 'applications prefix'
-
-        assert self.conf_get('applications/app') == {
+    assert client.conf_get('applications') == {
+        "app": {
             "type": "python",
             "processes": {"spare": 0},
             "path": "/app",
             "module": "wsgi",
-        }, 'applications prefix 2'
+        }
+    }, 'applications prefix'
 
-        assert self.conf_get('applications/app/type') == 'python', 'type'
-        assert self.conf_get('applications/app/processes/spare') == 0, 'spare'
+    assert client.conf_get('applications/app') == {
+        "type": "python",
+        "processes": {"spare": 0},
+        "path": "/app",
+        "module": "wsgi",
+    }, 'applications prefix 2'
 
-    def test_python_get_listeners(self):
-        assert 'success' in self.conf(self.conf_basic)
+    assert client.conf_get('applications/app/type') == 'python', 'type'
+    assert client.conf_get('applications/app/processes/spare') == 0, 'spare'
 
-        assert self.conf_get()['listeners'] == {
-            "*:7080": {"pass": "applications/app"}
-        }, 'listeners'
 
-        assert self.conf_get('listeners') == {
-            "*:7080": {"pass": "applications/app"}
-        }, 'listeners prefix'
+def test_python_get_listeners():
+    assert 'success' in client.conf(conf_basic)
 
-        assert self.conf_get('listeners/*:7080') == {
-            "pass": "applications/app"
-        }, 'listeners prefix 2'
+    assert client.conf_get()['listeners'] == {
+        "*:7080": {"pass": "applications/app"}
+    }, 'listeners'
 
-    def test_python_change_listener(self):
-        assert 'success' in self.conf(self.conf_basic)
-        assert 'success' in self.conf(
-            {"*:7081": {"pass": "applications/app"}}, 'listeners'
-        )
+    assert client.conf_get('listeners') == {
+        "*:7080": {"pass": "applications/app"}
+    }, 'listeners prefix'
 
-        assert self.conf_get('listeners') == {
-            "*:7081": {"pass": "applications/app"}
-        }, 'change listener'
+    assert client.conf_get('listeners/*:7080') == {
+        "pass": "applications/app"
+    }, 'listeners prefix 2'
 
-    def test_python_add_listener(self):
-        assert 'success' in self.conf(self.conf_basic)
-        assert 'success' in self.conf(
-            {"pass": "applications/app"}, 'listeners/*:7082'
-        )
 
-        assert self.conf_get('listeners') == {
-            "*:7080": {"pass": "applications/app"},
-            "*:7082": {"pass": "applications/app"},
-        }, 'add listener'
+def test_python_change_listener():
+    assert 'success' in client.conf(conf_basic)
+    assert 'success' in client.conf(
+        {"*:7081": {"pass": "applications/app"}}, 'listeners'
+    )
 
-    def test_python_change_application(self):
-        assert 'success' in self.conf(self.conf_basic)
+    assert client.conf_get('listeners') == {
+        "*:7081": {"pass": "applications/app"}
+    }, 'change listener'
 
-        assert 'success' in self.conf('30', 'applications/app/processes/max')
-        assert (
-            self.conf_get('applications/app/processes/max') == 30
-        ), 'change application max'
 
-        assert 'success' in self.conf('"/www"', 'applications/app/path')
-        assert (
-            self.conf_get('applications/app/path') == '/www'
-        ), 'change application path'
+def test_python_add_listener():
+    assert 'success' in client.conf(conf_basic)
+    assert 'success' in client.conf(
+        {"pass": "applications/app"}, 'listeners/*:7082'
+    )
 
-    def test_python_delete(self):
-        assert 'success' in self.conf(self.conf_basic)
+    assert client.conf_get('listeners') == {
+        "*:7080": {"pass": "applications/app"},
+        "*:7082": {"pass": "applications/app"},
+    }, 'add listener'
 
-        assert 'error' in self.conf_delete('applications/app')
-        assert 'success' in self.conf_delete('listeners/*:7080')
-        assert 'success' in self.conf_delete('applications/app')
-        assert 'error' in self.conf_delete('applications/app')
 
-    def test_python_delete_blocks(self):
-        assert 'success' in self.conf(self.conf_basic)
+def test_python_change_application():
+    assert 'success' in client.conf(conf_basic)
 
-        assert 'success' in self.conf_delete('listeners')
-        assert 'success' in self.conf_delete('applications')
+    assert 'success' in client.conf('30', 'applications/app/processes/max')
+    assert (
+        client.conf_get('applications/app/processes/max') == 30
+    ), 'change application max'
 
-        assert 'success' in self.conf(self.conf_app, 'applications')
-        assert 'success' in self.conf(
-            {"*:7081": {"pass": "applications/app"}}, 'listeners'
-        ), 'applications restore'
+    assert 'success' in client.conf('"/www"', 'applications/app/path')
+    assert (
+        client.conf_get('applications/app/path') == '/www'
+    ), 'change application path'
+
+
+def test_python_delete():
+    assert 'success' in client.conf(conf_basic)
+
+    assert 'error' in client.conf_delete('applications/app')
+    assert 'success' in client.conf_delete('listeners/*:7080')
+    assert 'success' in client.conf_delete('applications/app')
+    assert 'error' in client.conf_delete('applications/app')
+
+
+def test_python_delete_blocks():
+    assert 'success' in client.conf(conf_basic)
+
+    assert 'success' in client.conf_delete('listeners')
+    assert 'success' in client.conf_delete('applications')
+
+    assert 'success' in client.conf(conf_app, 'applications')
+    assert 'success' in client.conf(
+        {"*:7081": {"pass": "applications/app"}}, 'listeners'
+    ), 'applications restore'