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diff --git a/adapter/acumos/tests/test_validatejson.py b/adapter/acumos/tests/test_validatejson.py
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+++ b/adapter/acumos/tests/test_validatejson.py
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+# ============LICENSE_START====================================================
+# org.onap.dcae
+# =============================================================================
+# Copyright (c) 2021 highstreet technologies GmbH. All rights reserved.
+# =============================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END======================================================
+
+"""
+Test the compatibility of Adapter while reading metadata from both previous (upto Clio) Acumos releases
+and the new Demeter release.
+"""
+
+import aoconversion
+import testing_helpers
+
+
+def test_validate_format_Clio():
+    """
+    Given the metadata as per Acumos Clio's tree structure, check if the validate_json method
+    reads the correct input and output name
+    """
+    model_repo_path = testing_helpers.get_fixture_path('models')
+    model_name = 'example-model'
+    meta = aoconversion.utils.get_metadata(model_repo_path, model_name)
+
+    for method in meta["methods"]:
+        assert (aoconversion.utils.validate_format(meta, method, "input")) == "NumbersIn"
+        assert (aoconversion.utils.validate_format(meta, method, "output")) == "NumberOut"
+
+
+def test_validate_format_Demeter():
+    """
+        Given the metadata as per Acumos Clio's tree structure, check if the validate_json method
+        can also read the correct input and output name without fail
+        """
+    model_repo_path = testing_helpers.get_fixture_path('models')
+    model_name = 'example-model-demeter'
+    meta = aoconversion.utils.get_metadata(model_repo_path, model_name)
+
+    for method in meta["methods"]:
+        assert (aoconversion.utils.validate_format(meta, method, "input")) == "NumbersIn"
+        assert (aoconversion.utils.validate_format(meta, method, "output")) == "NumbersOut"