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_njs_modules.py

@@ -1,99 +1,104 @@
-from unit.applications.proto import TestApplicationProto
+from unit.applications.proto import ApplicationProto
 from unit.option import option
 
 prerequisites = {'modules': {'njs': 'any'}}
 
+client = ApplicationProto()
 
-class TestNJSModules(TestApplicationProto):
-    def njs_script_load(self, module, name=None, expect='success'):
-        if name is None:
-            name = module
 
-        with open(f'{option.test_dir}/njs/{module}/script.js', 'rb') as s:
-            assert expect in self.conf(s.read(), f'/js_modules/{name}')
+def njs_script_load(module, name=None, expect='success'):
+    if name is None:
+        name = module
 
-    def test_njs_modules(self):
-        self.njs_script_load('next')
+    with open(f'{option.test_dir}/njs/{module}/script.js', 'rb') as script:
+        assert expect in client.conf(script.read(), f'/js_modules/{name}')
 
-        assert 'export' in self.conf_get('/js_modules/next')
-        assert 'error' in self.conf_post('"blah"', '/js_modules/next')
 
-        assert 'success' in self.conf(
-            {
-                "settings": {"js_module": "next"},
-                "listeners": {"*:7080": {"pass": "routes/first"}},
-                "routes": {
-                    "first": [{"action": {"pass": "`routes/${next.route()}`"}}],
-                    "next": [{"action": {"return": 200}}],
-                },
-            }
-        )
-        assert self.get()['status'] == 200, 'string'
+def test_njs_modules():
+    njs_script_load('next')
 
-        assert 'success' in self.conf({"js_module": ["next"]}, 'settings')
-        assert self.get()['status'] == 200, 'array'
+    assert 'export' in client.conf_get('/js_modules/next')
+    assert 'error' in client.conf_post('"blah"', '/js_modules/next')
 
-        # add one more value to array
+    assert 'success' in client.conf(
+        {
+            "settings": {"js_module": "next"},
+            "listeners": {"*:7080": {"pass": "routes/first"}},
+            "routes": {
+                "first": [{"action": {"pass": "`routes/${next.route()}`"}}],
+                "next": [{"action": {"return": 200}}],
+            },
+        }
+    )
+    assert client.get()['status'] == 200, 'string'
 
-        assert len(self.conf_get('/js_modules').keys()) == 1
+    assert 'success' in client.conf({"js_module": ["next"]}, 'settings')
+    assert client.get()['status'] == 200, 'array'
 
-        self.njs_script_load('next', 'next_2')
+    # add one more value to array
 
-        assert len(self.conf_get('/js_modules').keys()) == 2
+    assert len(client.conf_get('/js_modules').keys()) == 1
 
-        assert 'success' in self.conf_post('"next_2"', 'settings/js_module')
-        assert self.get()['status'] == 200, 'array len 2'
+    njs_script_load('next', 'next_2')
 
-        assert 'success' in self.conf(
-            '"`routes/${next_2.route()}`"', 'routes/first/0/action/pass'
-        )
-        assert self.get()['status'] == 200, 'array new'
+    assert len(client.conf_get('/js_modules').keys()) == 2
 
-        # can't update exsisting script
+    assert 'success' in client.conf_post('"next_2"', 'settings/js_module')
+    assert client.get()['status'] == 200, 'array len 2'
 
-        self.njs_script_load('global_this', 'next', expect='error')
+    assert 'success' in client.conf(
+        '"`routes/${next_2.route()}`"', 'routes/first/0/action/pass'
+    )
+    assert client.get()['status'] == 200, 'array new'
 
-        # delete modules
+    # can't update exsisting script
 
-        assert 'error' in self.conf_delete('/js_modules/next_2')
-        assert 'success' in self.conf_delete('settings/js_module')
-        assert 'success' in self.conf_delete('/js_modules/next_2')
+    njs_script_load('global_this', 'next', expect='error')
 
-    def test_njs_modules_import(self):
-        self.njs_script_load('import_from')
+    # delete modules
 
-        assert 'success' in self.conf(
-            {
-                "settings": {"js_module": "import_from"},
-                "listeners": {"*:7080": {"pass": "routes/first"}},
-                "routes": {
-                    "first": [
-                        {"action": {"pass": "`routes/${import_from.num()}`"}}
-                    ],
-                    "number": [{"action": {"return": 200}}],
-                },
-            }
-        )
-        assert self.get()['status'] == 200
+    assert 'error' in client.conf_delete('/js_modules/next_2')
+    assert 'success' in client.conf_delete('settings/js_module')
+    assert 'success' in client.conf_delete('/js_modules/next_2')
 
-    def test_njs_modules_this(self):
-        self.njs_script_load('global_this')
 
-        assert 'success' in self.conf(
-            {
-                "settings": {"js_module": "global_this"},
-                "listeners": {"*:7080": {"pass": "routes/first"}},
-                "routes": {
-                    "first": [
-                        {"action": {"pass": "`routes/${global_this.str()}`"}}
-                    ],
-                    "string": [{"action": {"return": 200}}],
-                },
-            }
-        )
-        assert self.get()['status'] == 200
+def test_njs_modules_import():
+    njs_script_load('import_from')
 
-    def test_njs_modules_invalid(self, skip_alert):
-        skip_alert(r'.*JS compile module.*failed.*')
+    assert 'success' in client.conf(
+        {
+            "settings": {"js_module": "import_from"},
+            "listeners": {"*:7080": {"pass": "routes/first"}},
+            "routes": {
+                "first": [
+                    {"action": {"pass": "`routes/${import_from.num()}`"}}
+                ],
+                "number": [{"action": {"return": 200}}],
+            },
+        }
+    )
+    assert client.get()['status'] == 200
 
-        self.njs_script_load('invalid', expect='error')
+
+def test_njs_modules_this():
+    njs_script_load('global_this')
+
+    assert 'success' in client.conf(
+        {
+            "settings": {"js_module": "global_this"},
+            "listeners": {"*:7080": {"pass": "routes/first"}},
+            "routes": {
+                "first": [
+                    {"action": {"pass": "`routes/${global_this.str()}`"}}
+                ],
+                "string": [{"action": {"return": 200}}],
+            },
+        }
+    )
+    assert client.get()['status'] == 200
+
+
+def test_njs_modules_invalid(skip_alert):
+    skip_alert(r'.*JS compile module.*failed.*')
+
+    njs_script_load('invalid', expect='error')