tests: lwm2m: Add Portfolio testcases

Add testcases:
* LightweightM2M-1.1-int-1630 - Create Portfolio Object Instance
* LightweightM2M-1.1-int-1635 - Delete Portfolio Object Instance

Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>

tests/net/lib/lwm2m/interop/README.md

@@ -190,6 +190,8 @@ Tests are written from test spec;
 |LightweightM2M-1.1-int-310 - Observe-Composite and modification of parameter values|:white_check_mark:| |
 |LightweightM2M-1.1-int-311 - Send command                              |:white_check_mark:| |
 |LightweightM2M-1.1-int-401 - UDP Channel Security - PSK Mode           |:white_check_mark:| |
+|LightweightM2M-1.1-int-1630 - Create Portfolio Object Instance         |:white_check_mark:| |
+|LightweightM2M-1.1-int-1635 - Delete Portfolio Object Instance         |:white_check_mark:| |
 
 * :white_check_mark: Working OK.
 * :large_orange_diamond: Feature or operation not implemented.

tests/net/lib/lwm2m/interop/pytest/conftest.py

@@ -182,3 +182,18 @@ def endpoint(endpoint_registered) -> str:
     """Fixture that returns an endpoint that is registered."""
     endpoint_registered.check_update()
     return endpoint_registered
+
+@pytest.fixture(scope='module')
+def configuration_C13(endpoint_registered, shell: Shell) -> str:
+    """Fixture that returns an endpoint that has C13 configuration."""
+    shell.exec_command('lwm2m create /16/0')
+    shell.exec_command('lwm2m create /16/0/0/0')
+    shell.exec_command('lwm2m create /16/0/0/1')
+    shell.exec_command('lwm2m create /16/0/0/2')
+    shell.exec_command('lwm2m create /16/0/0/3')
+    shell.exec_command('lwm2m write /16/0/0/0 "Host Device ID #1"')
+    shell.exec_command('lwm2m write /16/0/0/1 "Host Device Manufacturer #1"')
+    shell.exec_command('lwm2m write /16/0/0/2 "Host Device Model #1"')
+    shell.exec_command('lwm2m write /16/0/0/3 "Host Device Software Version #1"')
+    yield endpoint_registered
+    shell.exec_command('lwm2m delete /16/0')

tests/net/lib/lwm2m/interop/pytest/test_portfolio.py

@@ -0,0 +1,63 @@
+"""
+Various LwM2M interoperability tests
+####################################
+
+Copyright (c) 2024 Nordic Semiconductor ASA
+
+SPDX-License-Identifier: Apache-2.0
+
+Test specification:
+===================
+https://www.openmobilealliance.org/release/LightweightM2M/ETS/OMA-ETS-LightweightM2M-V1_1-20190912-D.pdf
+
+
+This module contains testcases for
+ * Portfolio Object (ID 16) [1600-1699]
+
+"""
+
+import logging
+import pytest
+from leshan import Leshan
+
+from twister_harness import Shell
+
+logger = logging.getLogger(__name__)
+
+def test_LightweightM2M_1_1_int_1630(shell: Shell, leshan: Leshan, endpoint: str, configuration_C13: str):
+    """LightweightM2M-1.1-int-1630 - Create Portfolio Object Instance"""
+    resp = leshan.discover(endpoint, '16/0')
+    expected_keys = ['/16/0', '/16/0/0']
+    missing_keys = [key for key in expected_keys if key not in resp.keys()]
+    assert len(missing_keys) == 0
+    assert int(resp['/16/0/0']['dim']) == 4
+    resources = {
+        0: {0: 'Host Device ID #2',
+            1: 'Host Device Model #2'}
+    }
+    assert leshan.create_obj_instance(endpoint, '16/1', resources)['status'] == 'CREATED(201)'
+    resp = leshan.discover(endpoint, '16/1')
+    assert int(resp['/16/1/0']['dim']) == 2
+    resp = leshan.read(endpoint, '16')
+    expected = {
+        16: {0: {0: {0: 'Host Device ID #1',
+                     1: 'Host Device Manufacturer #1',
+                     2: 'Host Device Model #1',
+                     3: 'Host Device Software Version #1'}},
+             1: {0: {0: 'Host Device ID #2',
+                     1: 'Host Device Model #2'}}}
+    }
+    assert resp == expected
+    shell.exec_command('lwm2m delete /16/1')
+
+# Testcase invalidates the C13 configuration, so mark it as indirect
+@pytest.mark.parametrize(("configuration_C13"),[None], scope='function', indirect=['configuration_C13'])
+def test_LightweightM2M_1_1_int_1635(shell: Shell, leshan: Leshan, endpoint: str, configuration_C13: str):
+    """LightweightM2M-1.1-int-1635 - Delete Portfolio Object Instance"""
+    resp = leshan.discover(endpoint, '16')
+    expected_keys = ['/16/0', '/16/0/0']
+    missing_keys = [key for key in expected_keys if key not in resp.keys()]
+    assert len(missing_keys) == 0
+    assert leshan.delete(endpoint, '16/0')['status'] == 'DELETED(202)'
+    resp = leshan.discover(endpoint, '16')
+    assert resp == {'/16' : {}}