diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy
deleted file mode 100644
index 39d8ec3..0000000
--- a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2020 Nordix Foundation
- *  Modifications Copyright (C) 2020 Bell Canada. 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.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.api.impl
-
-import org.onap.cps.spi.CpsModulePersistenceService
-import org.opendaylight.yangtools.yang.common.Revision
-import org.opendaylight.yangtools.yang.model.api.SchemaContext
-import spock.lang.Specification
-
-class CpsModulePersistenceServiceImplSpec extends Specification {
-    def mockModuleStoreService = Mock(CpsModulePersistenceService)
-    def objectUnderTest = new CpsModuleServiceImpl()
-
-    def setup() {
-        objectUnderTest.cpsModulePersistenceService = mockModuleStoreService
-    }
-
-    def assertModule(SchemaContext schemaContext) {
-        def optionalModule = schemaContext.findModule('stores', Revision.of('2020-09-15'))
-        return schemaContext.modules.size() == 1 && optionalModule.isPresent()
-    }
-
-    def 'Store a SchemaContext'() {
-        expect: 'No exception to be thrown when a valid model (schema) is stored'
-            objectUnderTest.storeSchemaContext(Stub(SchemaContext.class), "sampleDataspace")
-    }
-
-}
diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModuleServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModuleServiceImplSpec.groovy
new file mode 100644
index 0000000..a93411b
--- /dev/null
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModuleServiceImplSpec.groovy
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. 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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api.impl
+
+import org.onap.cps.TestUtils
+import org.onap.cps.spi.CpsModulePersistenceService
+import org.onap.cps.spi.exceptions.ModelValidationException
+import org.onap.cps.utils.YangUtils
+import org.opendaylight.yangtools.yang.common.Revision
+import org.opendaylight.yangtools.yang.model.api.SchemaContext
+import spock.lang.Specification
+
+class CpsModuleServiceImplSpec extends Specification {
+    def mockModuleStoreService = Mock(CpsModulePersistenceService)
+    def objectUnderTest = new CpsModuleServiceImpl()
+
+    def setup() {
+        objectUnderTest.cpsModulePersistenceService = mockModuleStoreService
+    }
+
+    def 'Create schema set'() {
+        given: 'Valid yang resource as name-to-content map'
+            def yangResourcesNameToContentMap = TestUtils.getYangResourcesAsMap('bookstore.yang')
+        when: 'Create schema set method is invoked'
+            objectUnderTest.createSchemaSet('someDataspace', 'someSchemaSet', yangResourcesNameToContentMap)
+        then: 'Parameters are validated and processing is delegated to persistence service'
+            1 * mockModuleStoreService.storeSchemaSet('someDataspace', 'someSchemaSet', yangResourcesNameToContentMap)
+    }
+
+    def 'Create schema set from invalid resources'() {
+        given: 'Invalid yang resource as name-to-content map'
+            def yangResourcesNameToContentMap = TestUtils.getYangResourcesAsMap('invalid.yang')
+        when: 'Create schema set method is invoked'
+            objectUnderTest.createSchemaSet('someDataspace', 'someSchemaSet', yangResourcesNameToContentMap)
+        then: 'Model validation exception is thrown'
+            thrown(ModelValidationException.class)
+    }
+
+}
diff --git a/cps-service/src/test/groovy/org/onap/cps/utils/YangTextSchemaSourceSetSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/utils/YangTextSchemaSourceSetSpec.groovy
index fd1b144..9a19def 100644
--- a/cps-service/src/test/groovy/org/onap/cps/utils/YangTextSchemaSourceSetSpec.groovy
+++ b/cps-service/src/test/groovy/org/onap/cps/utils/YangTextSchemaSourceSetSpec.groovy
@@ -20,6 +20,7 @@
 package org.onap.cps.utils
 
 import org.onap.cps.TestUtils
+import org.onap.cps.spi.exceptions.ModelValidationException
 import org.onap.cps.yang.YangTextSchemaSourceSetBuilder
 import org.opendaylight.yangtools.yang.common.Revision
 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException
@@ -48,8 +49,9 @@
         then: 'an exception is thrown'
             thrown(expectedException)
         where: 'the following parameters are used'
-             filename           | description          || expectedException
-            'invalid.yang'      | 'invalid content'   || YangSyntaxErrorException
-            'invalid-empty.yang'| 'no valid content'   || YangSyntaxErrorException
+            filename                      | description            || expectedException
+            'invalid.yang'                | 'invalid content'      || ModelValidationException
+            'invalid-empty.yang'          | 'no valid content'     || ModelValidationException
+            'invalid-missing-import.yang' | 'no dependency module' || ModelValidationException
     }
 }
diff --git a/cps-service/src/test/resources/invalid-missing-import.yang b/cps-service/src/test/resources/invalid-missing-import.yang
new file mode 100644
index 0000000..3a0cc87
--- /dev/null
+++ b/cps-service/src/test/resources/invalid-missing-import.yang
@@ -0,0 +1,15 @@
+module test-module {
+    yang-version 1.1;
+
+    namespace "org:onap:cps:test:test-module";
+    revision "2020-02-02";
+    prefix "self";
+
+    import missing-module {
+        prefix "missing";
+    }
+
+    container self-container {
+        uses "missing:missing-group";
+    }
+}