basyx.aas.examples.data: Add unit test for __init__.py (eclipse-basyx…

…#283)

Previously, the unittests for 
`basyx.examples.data.__init__` were missing. 
This adds the missing unittests in a new 
`test.examples.test__init__` test file.

test/examples/test__init__.py

@@ -0,0 +1,55 @@
+# Copyright (c) 2024 the Eclipse BaSyx Authors
+#
+# This program and the accompanying materials are made available under the terms of the MIT License, available in
+# the LICENSE file of this project.
+#
+# SPDX-License-Identifier: MIT
+import unittest
+
+from basyx.aas import model
+from basyx.aas.examples.data import create_example, create_example_aas_binding
+
+
+class TestExampleFunctions(unittest.TestCase):
+
+    def test_create_example(self):
+        obj_store = create_example()
+
+        # Check that the object store is not empty
+        self.assertGreater(len(obj_store), 0)
+
+        # Check that the object store contains expected elements
+        expected_ids = [
+            'https://acplt.org/Test_AssetAdministrationShell',
+            'https://acplt.org/Test_Submodel_Template',
+            'https://acplt.org/Test_ConceptDescription_Mandatory'
+        ]
+        for id in expected_ids:
+            self.assertIsNotNone(obj_store.get_identifiable(id))
+
+    def test_create_example_aas_binding(self):
+        obj_store = create_example_aas_binding()
+
+        # Check that the object store is not empty
+        self.assertGreater(len(obj_store), 0)
+
+        # Check that the object store contains expected elements
+        aas_id = 'https://acplt.org/Test_AssetAdministrationShell'
+        sm_id = 'https://acplt.org/Test_Submodel_Template'
+        cd_id = 'https://acplt.org/Test_ConceptDescription_Mandatory'
+
+        aas = obj_store.get_identifiable(aas_id)
+        sm = obj_store.get_identifiable(sm_id)
+        cd = obj_store.get_identifiable(cd_id)
+
+        self.assertIsNotNone(aas)
+        self.assertIsNotNone(sm)
+        self.assertIsNotNone(cd)
+
+        # Check types
+        self.assertIsInstance(aas, model.aas.AssetAdministrationShell)
+        self.assertIsInstance(sm, model.submodel.Submodel)
+        self.assertIsInstance(cd, model.concept.ConceptDescription)
+
+        # Check that the submodel is referred by the AAS
+        self.assertIn(model.ModelReference.from_referable(sm), aas.submodel)