Transfer tosca-poc onto master

This is the third if three commits, this commit makes the content of
the master branch the same as the tosca-poc branch.

This commit adds the "src" files for TOSCA control loops to the modules
in master.

Difference between this commit and the current master:
------------------------------------------------------
diff -qr clamp clamp-master |diff_filter.sh
Only in clamp/common: src
Only in clamp/models: src
Files clamp/participant/participant-impl/participant-impl-dcae/pom.xml and clamp-master/participant/participant-impl/participant-impl-dcae/pom.xml differ
Only in clamp/participant/participant-impl/participant-impl-dcae: src
Only in clamp/participant/participant-impl/participant-impl-policy: src
Only in clamp/participant/participant-impl/participant-impl-simulator: src
Files clamp/participant/participant-impl/pom.xml and clamp-master/participant/participant-impl/pom.xml differ
Only in clamp/participant/participant-intermediary: src
Files clamp/participant/pom.xml and clamp-master/participant/pom.xml differ
Files clamp/pom.xml and clamp-master/pom.xml differ
Files clamp/runtime/pom.xml and clamp-master/runtime/pom.xml differ
Only in clamp: runtime-controlloop

Difference between this commit and the current tosca-poc branch:
----------------------------------------------------------------
diff -qr clamp clamp-tp |diff_filter.sh
Files clamp/INFO.yaml and clamp-tp/INFO.yaml differ
Only in clamp/releases: 6.0.1-container.yaml
Only in clamp/releases: 6.0.1.yaml
Only in clamp/releases: 6.0.2-container.yaml
Only in clamp/releases: 6.0.2.yaml
Only in clamp/releases: 6.1.0-container.yaml
Only in clamp/releases: 6.1.0.yaml
Only in clamp/releases: 6.1.1-container.yaml
Only in clamp/releases: 6.1.1.yaml
Files clamp/runtime/src/main/resources/META-INF/resources/swagger.html and clamp-tp/runtime/src/main/resources/META-INF/resources/swagger.html differ

Issue-ID: POLICY-3215
Change-Id: Ica1aa3fe5d6110df2396ea856703102e800fa770
Signed-off-by: liamfallon <liam.fallon@est.tech>

7 files changed, 1114 insertions, 0 deletions

diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java
new file mode 100644
index 000000000..040b33f5e
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java
@@ -0,0 +1,128 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.httpclient;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
+import static org.junit.Assert.assertTrue;
+import static org.mockserver.model.HttpRequest.request;
+import static org.mockserver.model.HttpResponse.response;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.mockserver.integration.ClientAndServer;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+/**
+ * Class to perform unit test of {@link ClampHttpClient}.
+ *
+ */
+public class ClampHttpClientTest {
+
+    private static final String LOOP = "pmsh_loop";
+    private static final String BLUEPRINT_DEPLOYED = "BLUEPRINT_DEPLOYED";
+
+    private static ClientAndServer mockServer;
+    private static ParticipantDcaeParameters parameters;
+    public static final Coder CODER = new StandardCoder();
+
+    /**
+     * Set up.
+     */
+    @BeforeClass
+    public static void setUp() {
+        CommonTestData commonTestData = new CommonTestData();
+
+        parameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+
+        mockServer = ClientAndServer.startClientAndServer(parameters.getClampClientParameters().getPort());
+
+        mockServer.when(request().withMethod("GET").withPath("/restservices/clds/v2/loop/getstatus/" + LOOP))
+                .respond(response().withBody(CommonTestData.createJsonStatus(BLUEPRINT_DEPLOYED)).withStatusCode(200));
+
+        mockServer.when(request().withMethod("PUT").withPath("/restservices/clds/v2/loop/deploy/" + LOOP))
+                .respond(response().withStatusCode(202));
+
+        mockServer.when(request().withMethod("PUT").withPath("/restservices/clds/v2/loop/undeploy/" + LOOP))
+                .respond(response().withStatusCode(202));
+    }
+
+    @AfterClass
+    public static void stopServer() {
+        mockServer.stop();
+        mockServer = null;
+    }
+
+    @Test
+    public void test_getstatus() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            Loop status = client.getstatus(LOOP);
+
+            String json = CommonTestData.createJsonStatus(BLUEPRINT_DEPLOYED);
+            Loop loop = CODER.convert(json, Loop.class);
+
+            assertThat(ClampHttpClient.getStatusCode(status)).isEqualTo(ClampHttpClient.getStatusCode(loop));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_deploy() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            assertTrue(client.deploy(LOOP));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_undeploy() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            assertTrue(client.undeploy(LOOP));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_getStatusCodeNull() {
+        assertThat(ClampHttpClient.getStatusCode(null)).isEqualTo(ClampHttpClient.STATUS_NOT_FOUND);
+    }
+
+    @Test
+    public void test_getStatusEmptyMap() {
+        assertThat(ClampHttpClient.getStatusCode(new Loop())).isEqualTo(ClampHttpClient.STATUS_NOT_FOUND);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java
new file mode 100644
index 000000000..bcfaf8bb9
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java
@@ -0,0 +1,294 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+import javax.ws.rs.core.Response;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.common.endpoints.parameters.TopicParameters;
+import org.onap.policy.common.parameters.ParameterGroup;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
+
+/**
+ * Class to hold/create all parameters for test cases.
+ */
+public class CommonTestData {
+    public static final String PARTICIPANT_GROUP_NAME = "ControlLoopParticipantGroup";
+    public static final String DESCRIPTION = "Participant description";
+    public static final long TIME_INTERVAL = 2000;
+    public static final List<TopicParameters> TOPIC_PARAMS = Arrays.asList(getTopicParams());
+    private static final String REST_CLIENT_PASSWORD = "password";
+    private static final String REST_CLIENT_USER = "admin";
+    private static final int REST_CLAMP_PORT = 8443;
+    private static final int REST_CONSUL_PORT = 31321;
+    private static final String REST_CLAMP_HOST = "localhost";
+    private static final String REST_CONSUL_HOST = "consul";
+    private static final boolean REST_CLAMP_HTTPS = false;
+    private static final boolean REST_CONSUL_HTTPS = false;
+    private static final boolean REST_CLIENT_AAF = false;
+
+    public static final Coder coder = new StandardCoder();
+
+    /**
+     * Converts the contents of a map to a parameter class.
+     *
+     * @param source property map
+     * @param clazz class of object to be created from the map
+     * @return a new object represented by the map
+     */
+    public <T extends ParameterGroup> T toObject(final Map<String, Object> source, final Class<T> clazz) {
+        try {
+            return coder.convert(source, clazz);
+
+        } catch (final CoderException e) {
+            throw new RuntimeException("cannot create " + clazz.getName() + " from map", e);
+        }
+    }
+
+    /**
+     * Returns a property map for a ApexStarterParameterGroup map for test cases.
+     *
+     * @param name name of the parameters
+     *
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getParticipantParameterGroupMap(final String name) {
+        final Map<String, Object> map = new TreeMap<>();
+
+        map.put("name", name);
+        map.put("clampClientParameters", getClampClientParametersMap(false));
+        map.put("consulClientParameters", getConsulClientParametersMap(false));
+        map.put("intermediaryParameters", getIntermediaryParametersMap(false));
+        map.put("databaseProviderParameters", getDatabaseProviderParametersMap(false));
+        return map;
+    }
+
+    /**
+     * Returns a property map for a RestServerParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getClampClientParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        map.put("https", REST_CLAMP_HTTPS);
+        map.put("aaf", REST_CLIENT_AAF);
+
+        if (!isEmpty) {
+            map.put("host", REST_CLAMP_HOST);
+            map.put("port", REST_CLAMP_PORT);
+            map.put("userName", REST_CLIENT_USER);
+            map.put("password", REST_CLIENT_PASSWORD);
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a RestServerParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getConsulClientParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        map.put("https", REST_CONSUL_HTTPS);
+        map.put("aaf", REST_CLIENT_AAF);
+
+        if (!isEmpty) {
+            map.put("host", REST_CONSUL_HOST);
+            map.put("port", REST_CONSUL_PORT);
+            map.put("userName", REST_CLIENT_USER);
+            map.put("password", REST_CLIENT_PASSWORD);
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a databaseProviderParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getDatabaseProviderParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "PolicyProviderParameterGroup");
+            map.put("implementation", "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl");
+            map.put("databaseDriver", "org.h2.Driver");
+            map.put("databaseUrl", "jdbc:h2:mem:testdb");
+            map.put("databaseUser", "policy");
+            map.put("databasePassword", "P01icY");
+            map.put("persistenceUnit", "ToscaConceptTest");
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a intermediaryParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getIntermediaryParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "Participant parameters");
+            map.put("reportingTimeInterval", TIME_INTERVAL);
+            map.put("description", DESCRIPTION);
+            map.put("participantId", getParticipantId());
+            map.put("participantType", getParticipantId());
+            map.put("clampControlLoopTopics", getTopicParametersMap(false));
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a TopicParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getTopicParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("topicSources", TOPIC_PARAMS);
+            map.put("topicSinks", TOPIC_PARAMS);
+        }
+        return map;
+    }
+
+    /**
+     * Returns topic parameters for test cases.
+     *
+     * @return topic parameters
+     */
+    public static TopicParameters getTopicParams() {
+        final TopicParameters topicParams = new TopicParameters();
+        topicParams.setTopic("POLICY-CLRUNTIME-PARTICIPANT");
+        topicParams.setTopicCommInfrastructure("dmaap");
+        topicParams.setServers(Arrays.asList("localhost"));
+        return topicParams;
+    }
+
+    /**
+     * Returns participantId for test cases.
+     *
+     * @return participant Id
+     */
+    public static ToscaConceptIdentifier getParticipantId() {
+        final ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+        return participantId;
+    }
+
+    /**
+     * Gets the standard participant parameters.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public ParticipantDcaeParameters getParticipantParameterGroup(int port) {
+        try {
+            return coder.decode(getParticipantParameterGroupAsString(port), ParticipantDcaeParameters.class);
+
+        } catch (CoderException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read participant parameters",
+                    e);
+        }
+    }
+
+    /**
+     * Gets the standard participant parameters, as a String.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public static String getParticipantParameterGroupAsString(int port) {
+
+        try {
+            File file = new File(getParamFile());
+            String json = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
+
+            json = json.replace("${port}", String.valueOf(port));
+            json = json.replace("${dbName}", "jdbc:h2:mem:testdb");
+
+            return json;
+
+        } catch (IOException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read participant parameters",
+                    e);
+
+        }
+    }
+
+    /**
+     * Gets the full path to the parameter file, which may vary depending on whether or
+     * not this is an end-to-end test.
+     *
+     * @return the parameter file name
+     */
+    private static String getParamFile() {
+        return "src/test/resources/parameters/TestParametersStd.json";
+    }
+
+    /**
+     * Nulls out a field within a JSON string.
+     *
+     * @param json JSON string
+     * @param field field to be nulled out
+     * @return a new JSON string with the field nulled out
+     */
+    public String nullifyField(String json, String field) {
+        return json.replace(field + "\"", field + "\":null, \"" + field + "Xxx\"");
+    }
+
+    /**
+     * create Json response from getstatus call.
+     *
+     * @param status the status of Partecipant
+     * @return the JSON
+     */
+    public static String createJsonStatus(String status) {
+        try {
+            File file = new File("src/test/resources/rest/status.json");
+            String json = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
+            return json.replace("${status}", status);
+
+        } catch (IOException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read json file", e);
+        }
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java
new file mode 100644
index 000000000..058a3dae4
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.FileNotFoundException;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeCommandLineArguments;
+import org.onap.policy.common.utils.coder.CoderException;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterHandler}.
+ *
+ */
+public class TestParticipantDcaeParameterHandler {
+
+    @Test
+    public void testParameterHandlerNoParameterFile() throws ControlLoopException {
+        final String[] emptyArgumentString = { "-c", "src/test/resources/parameters/NoParametersFile.json" };
+
+        final ParticipantDcaeCommandLineArguments emptyArguments = new ParticipantDcaeCommandLineArguments();
+        emptyArguments.parse(emptyArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantDcaeParameterHandler().getParameters(emptyArguments))
+            .hasCauseInstanceOf(CoderException.class)
+            .hasRootCauseInstanceOf(FileNotFoundException.class);
+    }
+
+    @Test
+    public void testParameterHandlerInvalidParameters() throws ControlLoopException {
+        final String[] invalidArgumentString = { "-c", "src/test/resources/parameters/InvalidParameters.json" };
+
+        final ParticipantDcaeCommandLineArguments invalidArguments =
+                new ParticipantDcaeCommandLineArguments();
+        invalidArguments.parse(invalidArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantDcaeParameterHandler().getParameters(invalidArguments))
+            .hasMessageStartingWith("error reading parameters from")
+            .hasCauseInstanceOf(CoderException.class);
+    }
+
+    @Test
+    public void testParticipantParameterGroup() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json" };
+
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        arguments.parse(participantConfigParameters);
+
+        final ParticipantDcaeParameters parGroup = new ParticipantDcaeParameterHandler()
+                .getParameters(arguments);
+        assertTrue(arguments.checkSetConfigurationFilePath());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, parGroup.getName());
+    }
+
+    @Test
+    public void testParticipantVersion() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-v" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThat(arguments.parse(participantConfigParameters)).startsWith(
+                "ONAP Tosca defined control loop Participant");
+    }
+
+    @Test
+    public void testParticipantHelp() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-h" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThat(arguments.parse(participantConfigParameters)).startsWith("usage:");
+    }
+
+    @Test
+    public void testParticipantInvalidOption() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-d" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThatThrownBy(() -> arguments.parse(participantConfigParameters))
+            .hasMessageStartingWith("invalid command line arguments specified");
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java
new file mode 100644
index 000000000..edb429322
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java
@@ -0,0 +1,90 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
+import org.onap.policy.common.parameters.ValidationResult;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterGroup}.
+ *
+ */
+public class TestParticipantDcaeParameters {
+    CommonTestData commonTestData = new CommonTestData();
+
+    @Test
+    public void testParticipantParameterGroup_Named() {
+        final ParticipantDcaeParameters participantParameters = new ParticipantDcaeParameters("my-name");
+        assertEquals("my-name", participantParameters.getName());
+    }
+
+    @Test
+    public void testParticipantParameterGroup() {
+        final ParticipantDcaeParameters participantParameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+        final ParticipantIntermediaryParameters participantIntermediaryParameters = participantParameters
+                .getIntermediaryParameters();
+        final TopicParameterGroup topicParameterGroup  = participantParameters.getIntermediaryParameters()
+                .getClampControlLoopTopics();
+        final ValidationResult validationResult = participantParameters.validate();
+        assertTrue(validationResult.isValid());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, participantParameters.getName());
+        assertEquals(CommonTestData.TIME_INTERVAL, participantIntermediaryParameters.getReportingTimeInterval());
+        assertEquals(CommonTestData.DESCRIPTION, participantIntermediaryParameters.getDescription());
+        assertEquals(CommonTestData.TOPIC_PARAMS, topicParameterGroup.getTopicSinks());
+        assertEquals(CommonTestData.TOPIC_PARAMS, topicParameterGroup.getTopicSources());
+    }
+
+    @Test
+    public void testParticipantParameterGroup_EmptyParticipantIntermediaryParameters() {
+        final Map<String, Object> map =
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME);
+        map.replace("intermediaryParameters", commonTestData.getIntermediaryParametersMap(true));
+        final ParticipantDcaeParameters participantParameters =
+                commonTestData.toObject(map, ParticipantDcaeParameters.class);
+        final ValidationResult validationResult = participantParameters.validate();
+        assertNull(validationResult.getResult());
+    }
+
+    @Test
+    public void testParticipantParameterGroup_EmptyTopicParameters() {
+        final Map<String, Object> map =
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME);
+        final Map<String, Object> intermediaryParametersMap = commonTestData.getIntermediaryParametersMap(false);
+        intermediaryParametersMap.put("clampControlLoopTopics", commonTestData.getTopicParametersMap(true));
+        map.replace("intermediaryParameters", intermediaryParametersMap);
+
+        final ParticipantDcaeParameters participantParameters =
+                commonTestData.toObject(map, ParticipantDcaeParameters.class);
+        final ValidationResult validationResult = participantParameters.validate();
+        assertNull(validationResult.getResult());
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java
new file mode 100644
index 000000000..c3cc8b755
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java
@@ -0,0 +1,255 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.rest;
+
+import java.io.File;
+import java.time.Instant;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.UUID;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantState;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantControlLoopStateChange;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantControlLoopUpdate;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantHealthCheck;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStateChange;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.handler.DcaeProvider;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.intermediary.handler.ParticipantHandler;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.common.utils.coder.YamlJsonTranslator;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
+
+public class TestListenerUtils {
+
+    private static final YamlJsonTranslator yamlTranslator = new YamlJsonTranslator();
+    private static final Coder CODER = new StandardCoder();
+    private static final String TOSCA_TEMPLATE_YAML = "examples/controlloop/PMSubscriptionHandling.yaml";
+    static CommonTestData commonTestData = new CommonTestData();
+
+    @Getter
+    private static ParticipantHandler participantHandler;
+
+    /**
+     * Method to initialize participantHandler.
+     */
+    public static void initParticipantHandler() {
+
+        final ParticipantDcaeParameters parameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+
+        DcaeProvider dcaeProvider = new DcaeProvider(parameters);
+
+        participantHandler = dcaeProvider.getIntermediaryApi().getParticipantHandler();
+    }
+
+    /**
+     * Method to create a controlLoop from a yaml file.
+     *
+     * @return ControlLoop controlloop
+     */
+    public static ControlLoop createControlLoop() {
+        ControlLoop controlLoop = new ControlLoop();
+        Map<UUID, ControlLoopElement> elements = new LinkedHashMap<>();
+        ToscaServiceTemplate toscaServiceTemplate = testControlLoopRead();
+        Map<String, ToscaNodeTemplate> nodeTemplatesMap =
+                toscaServiceTemplate.getToscaTopologyTemplate().getNodeTemplates();
+        for (Map.Entry<String, ToscaNodeTemplate> toscaInputEntry : nodeTemplatesMap.entrySet()) {
+            ControlLoopElement clElement = new ControlLoopElement();
+            clElement.setId(UUID.randomUUID());
+
+            ToscaConceptIdentifier clElementParticipantId = new ToscaConceptIdentifier();
+            clElementParticipantId.setName(toscaInputEntry.getKey());
+            clElementParticipantId.setVersion(toscaInputEntry.getValue().getVersion());
+            clElement.setParticipantId(clElementParticipantId);
+
+            clElement.setDefinition(clElementParticipantId);
+            clElement.setState(ControlLoopState.UNINITIALISED);
+            clElement.setDescription(toscaInputEntry.getValue().getDescription());
+            clElement.setOrderedState(ControlLoopOrderedState.UNINITIALISED);
+            elements.put(clElement.getId(), clElement);
+        }
+        controlLoop.setElements(elements);
+        controlLoop.setName("PMSHInstance0");
+        controlLoop.setVersion("1.0.0");
+
+        ToscaConceptIdentifier definition = new ToscaConceptIdentifier();
+        definition.setName("PMSHInstance0");
+        definition.setVersion("1.0.0");
+        controlLoop.setDefinition(definition);
+
+        return controlLoop;
+    }
+
+    /**
+     * Method to create ParticipantStateChange message from the arguments passed.
+     *
+     * @param participantState participant State
+     *
+     * @return ParticipantStateChange message
+     */
+    public static ParticipantStateChange createParticipantStateChangeMsg(final ParticipantState participantState) {
+        final ParticipantStateChange participantStateChangeMsg = new ParticipantStateChange();
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        participantStateChangeMsg.setParticipantId(participantId);
+        participantStateChangeMsg.setTimestamp(Instant.now());
+        participantStateChangeMsg.setState(participantState);
+
+        return participantStateChangeMsg;
+    }
+
+    /**
+     * Method to create ControlLoopStateChange message from the arguments passed.
+     *
+     * @param controlLoopOrderedState controlLoopOrderedState
+     *
+     * @return ParticipantControlLoopStateChange message
+     */
+    public static ParticipantControlLoopStateChange createControlLoopStateChangeMsg(
+            final ControlLoopOrderedState controlLoopOrderedState) {
+        final ParticipantControlLoopStateChange participantClStateChangeMsg = new ParticipantControlLoopStateChange();
+
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        participantClStateChangeMsg.setControlLoopId(controlLoopId);
+        participantClStateChangeMsg.setParticipantId(participantId);
+        participantClStateChangeMsg.setTimestamp(Instant.now());
+        participantClStateChangeMsg.setOrderedState(controlLoopOrderedState);
+
+        return participantClStateChangeMsg;
+    }
+
+    /**
+     * Method to create ControlLoopUpdateMsg.
+     *
+     * @return ParticipantControlLoopUpdate message
+     */
+    public static ParticipantControlLoopUpdate createControlLoopUpdateMsg() {
+        final ParticipantControlLoopUpdate clUpdateMsg = new ParticipantControlLoopUpdate();
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        clUpdateMsg.setControlLoopId(controlLoopId);
+        clUpdateMsg.setParticipantId(participantId);
+
+        ControlLoop controlLoop = new ControlLoop();
+        Map<UUID, ControlLoopElement> elements = new LinkedHashMap<>();
+        ToscaServiceTemplate toscaServiceTemplate = testControlLoopRead();
+        Map<String, ToscaNodeTemplate> nodeTemplatesMap =
+                toscaServiceTemplate.getToscaTopologyTemplate().getNodeTemplates();
+        for (Map.Entry<String, ToscaNodeTemplate> toscaInputEntry : nodeTemplatesMap.entrySet()) {
+            ControlLoopElement clElement = new ControlLoopElement();
+            clElement.setId(UUID.randomUUID());
+
+            ToscaConceptIdentifier clElementParticipantId = new ToscaConceptIdentifier();
+            clElementParticipantId.setName(toscaInputEntry.getKey());
+            clElementParticipantId.setVersion(toscaInputEntry.getValue().getVersion());
+            clElement.setParticipantId(clElementParticipantId);
+
+            clElement.setDefinition(clElementParticipantId);
+            clElement.setState(ControlLoopState.UNINITIALISED);
+            clElement.setDescription(toscaInputEntry.getValue().getDescription());
+            clElement.setOrderedState(ControlLoopOrderedState.UNINITIALISED);
+            elements.put(clElement.getId(), clElement);
+        }
+        controlLoop.setElements(elements);
+        controlLoop.setName("PMSHInstance0");
+        controlLoop.setVersion("1.0.0");
+        controlLoop.setDefinition(controlLoopId);
+        clUpdateMsg.setControlLoop(controlLoop);
+        clUpdateMsg.setControlLoopDefinition(toscaServiceTemplate);
+
+        return clUpdateMsg;
+    }
+
+    /**
+     * Method to create ParticipantHealthCheck message.
+     *
+     * @return ParticipantHealthCheck message
+     */
+    public static ParticipantHealthCheck createParticipantHealthCheckMsg() {
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        final ParticipantHealthCheck participantHealthCheckMsg = new ParticipantHealthCheck();
+        participantHealthCheckMsg.setParticipantId(participantId);
+        participantHealthCheckMsg.setControlLoopId(controlLoopId);
+        participantHealthCheckMsg.setTimestamp(Instant.now());
+        participantHealthCheckMsg.setState(ParticipantState.PASSIVE);
+
+        return participantHealthCheckMsg;
+    }
+
+    /**
+     * Method to create ParticipantControlLoopUpdate using the arguments passed.
+     *
+     * @param jsonFilePath the path of the controlloop content
+     *
+     * @return ParticipantControlLoopUpdate message
+     * @throws CoderException exception while reading the file to object
+     */
+    public static ParticipantControlLoopUpdate createParticipantClUpdateMsgFromJson(String jsonFilePath)
+            throws CoderException {
+        ParticipantControlLoopUpdate participantControlLoopUpdateMsg =
+                CODER.decode(new File(jsonFilePath), ParticipantControlLoopUpdate.class);
+        return participantControlLoopUpdateMsg;
+    }
+
+    private static ToscaServiceTemplate testControlLoopRead() {
+        return testControlLoopYamlSerialization(TOSCA_TEMPLATE_YAML);
+    }
+
+    private static ToscaServiceTemplate testControlLoopYamlSerialization(String controlLoopFilePath) {
+        String controlLoopString = ResourceUtils.getResourceAsString(controlLoopFilePath);
+        ToscaServiceTemplate serviceTemplate = yamlTranslator.fromYaml(controlLoopString, ToscaServiceTemplate.class);
+        return serviceTemplate;
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java
new file mode 100644
index 000000000..f779f3a57
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java
@@ -0,0 +1,151 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.ControlLoopConstants;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.Main;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeActivator;
+import org.onap.policy.common.utils.resources.MessageConstants;
+import org.onap.policy.common.utils.services.Registry;
+
+/**
+ * Class to perform unit test of {@link Main}}.
+ */
+public class TestMain {
+
+    /**
+     * Set up.
+     */
+    @BeforeClass
+    public static void setUp() {
+        Registry.newRegistry();
+    }
+
+    /**
+     * Shuts "main" down.
+     *
+     * @throws Exception if an error occurs
+     */
+    @AfterClass
+    public static void tearDown() throws Exception {
+        // shut down activator
+        final ParticipantDcaeActivator activator =
+            Registry.getOrDefault(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR,
+                            ParticipantDcaeActivator.class, null);
+        if (activator != null && activator.isAlive()) {
+            activator.shutdown();
+        }
+    }
+
+    @Test
+    public void testMain_Help() {
+        final String[] configParameters = {"-h"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Version() {
+        final String[] configParameters = {"-v"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Valid() {
+        final String[] configParameters = {"-c", "src/test/resources/parameters/TestParameters.json"};
+        Main main = new Main(configParameters);
+        assertTrue(main.isRunning());
+
+        // ensure items were added to the registry
+        assertNotNull(Registry.get(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR, ParticipantDcaeActivator.class));
+
+        assertThatCode(() -> main.shutdown()).doesNotThrowAnyException();
+
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_NoParameter() {
+        assertThatConfigParameterThrownException(new String[] {});
+    }
+
+    @Test
+    public void testMain_FilePathNotDefined() {
+        assertThatConfigParameterThrownException(new String[] {"-c"});
+    }
+
+    @Test
+    public void testMain_TooManyCommand() {
+        assertThatConfigParameterThrownException(new String[] {"-h", "d"});
+    }
+
+    @Test
+    public void testMain_WrongParameter() {
+        assertThatConfigParameterThrownException(new String[] {"-d"});
+    }
+
+    private void assertThatConfigParameterThrownException(final String[] configParameters) {
+        assertThatThrownBy(() -> Main.main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+
+    @Test
+    public void testParticipant_NoFileWithThisName() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoFileWithThisName.json");
+    }
+
+    @Test
+    public void testParticipant_NotValidFile() {
+        assertThatConfigFileThrownException("src/test/resources/parameters");
+    }
+
+    @Test
+    public void testParticipant_NoParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoParameters.json");
+    }
+
+    @Test
+    public void testParticipant_InvalidParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/InvalidParameters.json");
+    }
+
+    @Test
+    public void testParticipant_WrongJsonFormat() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/Unreadable.json");
+    }
+
+    private void assertThatConfigFileThrownException(final String configFilePath) {
+        final String[] configParameters = new String[] {"-c", configFilePath};
+        assertThatThrownBy(() -> new Main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java
new file mode 100644
index 000000000..1903868e2
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java
@@ -0,0 +1,94 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.clamp.controlloop.participant.dcae.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeActivator;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeCommandLineArguments;
+import org.onap.policy.common.utils.services.Registry;
+
+/**
+ * Class to perform unit test of {@link ParticipantDcaeActivator}}.
+ *
+ */
+public class TestParticipantDcaeActivator {
+
+    private static ParticipantDcaeActivator activator;
+
+    /**
+     * Initializes an activator.
+     *
+     * @throws Exception if an error occurs
+     */
+    @BeforeClass
+    public static void setUp() throws Exception {
+        Registry.newRegistry();
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json"};
+        final ParticipantDcaeCommandLineArguments arguments =
+                new ParticipantDcaeCommandLineArguments(participantConfigParameters);
+        final ParticipantDcaeParameters parGroup =
+                new ParticipantDcaeParameterHandler().getParameters(arguments);
+        activator = new ParticipantDcaeActivator(parGroup);
+    }
+
+    /**
+     * Method for cleanup after each test.
+     *
+     * @throws Exception if an error occurs
+     */
+    @AfterClass
+    public static void teardown() throws Exception {
+        // shut down activator
+        if (activator != null && activator.isAlive()) {
+            activator.shutdown();
+        }
+    }
+
+    @Test
+    public void testParticipantActivator() {
+        activator.start();
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, activator.getParameters().getName());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.start());
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+
+        activator.shutdown();
+        assertFalse(activator.isAlive());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.shutdown());
+        assertFalse(activator.isAlive());
+    }
+}