Bugfix devshell "manage" command

src/inventory_project/dev_shell.py

@@ -54,7 +54,7 @@ class PyInventoryCommandSet(DevShellBaseCommandSet):
         """
         Call PyInventory test "manage.py"
         """
-        call_manage_py(*statement.arg_list, cwd=PACKAGE_ROOT / 'src' / 'inventory')
+        call_manage_py(*statement.arg_list, cwd=PACKAGE_ROOT)
 
     def do_run_testserver(self, statement: cmd2.Statement):
         """

src/inventory_project/tests/test_devshell.py

@@ -11,27 +11,32 @@ import inventory
 BASE_PATH = Path(inventory.__file__).parent.parent.parent
 
 
-def call_run_testserver(*args):
+def call_devshell_commands(*args):
     dev_shell_py = BASE_PATH / 'devshell.py'
     assert_is_file(dev_shell_py)
     output = subprocess.check_output(
-        [sys.executable, str(dev_shell_py), 'run_testserver'] + list(args),
-        stderr=subprocess.STDOUT,
-        text=True
+        [sys.executable, str(dev_shell_py)] + list(args), stderr=subprocess.STDOUT, text=True
     )
     return output
 
 
-class RunTestServerTestCase(TestCase):
+class DevShellTestCase(TestCase):
     def test_run_testserver(self):
-        output = call_run_testserver('--help')
+        output = call_devshell_commands('run_testserver', '--help')
         assert 'usage: manage.py run_testserver' in output
         assert 'Run Django dev. Server' in output
         assert 'Optional port number, or ipaddr:port' in output
 
     def test_pass_wrong_addrport(self):
-        output = call_run_testserver('not-ip:no-port')
+        output = call_devshell_commands('run_testserver', 'not-ip:no-port')
         assert "call 'runserver' command with" in output
         assert (
             'CommandError: "not-ip:no-port" is not a valid port number or address:port pair.'
         ) in output
+
+    def test_manage_command(self):
+        output = call_devshell_commands('manage', 'diffsettings')
+        assert "DJANGO_SETTINGS_MODULE='inventory_project.settings.tests'" in output
+        assert f"PROJECT_PATH:{BASE_PATH}/src" in output
+        assert f"BASE_PATH:{BASE_PATH}" in output
+        assert f"PROJECT_PATH = PosixPath('{BASE_PATH}/src')" in output