Add basic main structure for policy-api

Define main pom xml and update to include main.
Add the main exception parameters rest
startstop classes. Add test cases. Modify comments

Issue-ID: POLICY-1066
Change-Id: I2e878a58eef4f021e3a9a991738194127edf4d16
Signed-off-by: krisjinka <kris.jinka@samsung.com>
Signed-off-by: krishnajinka <kris.jinka@samsung.com>

15 files changed, 668 insertions, 0 deletions

diff --git a/main/src/test/java/org/onap/policy/api/main/parameters/CommonTestData.java b/main/src/test/java/org/onap/policy/api/main/parameters/CommonTestData.java
new file mode 100644
index 00000000..f86c8570
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/parameters/CommonTestData.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.parameters;
+
+/**
+ * Class to hold/create all parameters for test cases.
+ *
+ */
+public class CommonTestData {
+
+    private static final String REST_SERVER_PASSWORD = "zb!XztG34";
+    private static final String REST_SERVER_USER = "healthcheck";
+    private static final int REST_SERVER_PORT = 6969;
+    private static final String REST_SERVER_HOST = "0.0.0.0";
+    public static final String API_GROUP_NAME = "ApiGroup";
+
+    /**
+     * Returns an instance of ReceptionHandlerParameters for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return the restServerParameters object
+     */
+    public RestServerParameters getRestServerParameters(final boolean isEmpty) {
+        final RestServerParameters restServerParameters;
+        if (!isEmpty) {
+            restServerParameters = new RestServerParameters(REST_SERVER_HOST, REST_SERVER_PORT, REST_SERVER_USER,
+                    REST_SERVER_PASSWORD);
+        } else {
+            restServerParameters = new RestServerParameters(null, 0, null, null);
+        }
+        return restServerParameters;
+    }
+
+}
diff --git a/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterGroup.java b/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterGroup.java
new file mode 100644
index 00000000..6ad8c72b
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterGroup.java
@@ -0,0 +1,92 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.parameters;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+import org.onap.policy.common.parameters.GroupValidationResult;
+
+/**
+ * Class to perform unit test of ApiParameterGroup.
+ *
+ */
+public class TestApiParameterGroup {
+    CommonTestData commonTestData = new CommonTestData();
+
+    @Test
+    public void testApiParameterGroup() {
+        final RestServerParameters restServerParameters = commonTestData.getRestServerParameters(false);
+        final ApiParameterGroup apiParameters = new ApiParameterGroup(
+                CommonTestData.API_GROUP_NAME, restServerParameters);
+        final GroupValidationResult validationResult = apiParameters.validate();
+        assertTrue(validationResult.isValid());
+        assertEquals(restServerParameters.getHost(), apiParameters.getRestServerParameters().getHost());
+        assertEquals(restServerParameters.getPort(), apiParameters.getRestServerParameters().getPort());
+        assertEquals(restServerParameters.getUserName(),
+                apiParameters.getRestServerParameters().getUserName());
+        assertEquals(restServerParameters.getPassword(),
+                apiParameters.getRestServerParameters().getPassword());
+        assertEquals(CommonTestData.API_GROUP_NAME, apiParameters.getName());
+    }
+
+    @Test
+    public void testApiParameterGroup_NullName() {
+        final RestServerParameters restServerParameters = commonTestData.getRestServerParameters(false);
+        final ApiParameterGroup apiParameters = new ApiParameterGroup(null,
+                        restServerParameters);
+        final GroupValidationResult validationResult = apiParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertEquals(null, apiParameters.getName());
+        assertTrue(validationResult.getResult()
+                        .contains("field \"name\" type \"java.lang.String\" value \"null\" INVALID, "
+                                        + "must be a non-blank string"));
+    }
+
+    @Test
+    public void testApiParameterGroup_EmptyName() {
+        final RestServerParameters restServerParameters = commonTestData.getRestServerParameters(false);
+
+        final ApiParameterGroup apiParameters = new ApiParameterGroup("",
+                        restServerParameters);
+        final GroupValidationResult validationResult = apiParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertEquals("", apiParameters.getName());
+        assertTrue(validationResult.getResult().contains("field \"name\" type \"java.lang.String\" value \"\" INVALID, "
+                        + "must be a non-blank string"));
+    }
+
+    @Test
+    public void testApiParameterGroup_EmptyRestServerParameters() {
+        final RestServerParameters restServerParameters = commonTestData.getRestServerParameters(true);
+
+        final ApiParameterGroup apiParameters = new ApiParameterGroup(
+                        CommonTestData.API_GROUP_NAME, restServerParameters);
+        final GroupValidationResult validationResult = apiParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertTrue(validationResult.getResult()
+                        .contains("\"org.onap.policy.api.main.parameters.RestServerParameters\" INVALID, "
+                                        + "parameter group has status INVALID"));
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterHandler.java b/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterHandler.java
new file mode 100644
index 00000000..7a065240
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/parameters/TestApiParameterHandler.java
@@ -0,0 +1,219 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.parameters;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import org.junit.Test;
+import org.onap.policy.api.main.PolicyApiException;
+import org.onap.policy.api.main.startstop.ApiCommandLineArguments;
+
+/**
+ * Class to perform unit test of ApiParameterHandler.
+ *
+ */
+public class TestApiParameterHandler {
+    @Test
+    public void testParameterHandlerNoParameterFile() throws PolicyApiException {
+        final String[] noArgumentString =
+        { "-c", "parameters/NoParameterFile.json" };
+
+        final ApiCommandLineArguments noArguments = new ApiCommandLineArguments();
+        noArguments.parse(noArgumentString);
+
+        try {
+            new ApiParameterHandler().getParameters(noArguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            assertTrue(e.getMessage().contains("FileNotFoundException"));
+        }
+    }
+
+    @Test
+    public void testParameterHandlerEmptyParameters() throws PolicyApiException {
+        final String[] emptyArgumentString =
+        { "-c", "parameters/EmptyParameters.json" };
+
+        final ApiCommandLineArguments emptyArguments = new ApiCommandLineArguments();
+        emptyArguments.parse(emptyArgumentString);
+
+        try {
+            new ApiParameterHandler().getParameters(emptyArguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            assertEquals("no parameters found in \"parameters/EmptyParameters.json\"", e.getMessage());
+        }
+    }
+
+    @Test
+    public void testParameterHandlerBadParameters() throws PolicyApiException {
+        final String[] badArgumentString =
+        { "-c", "parameters/BadParameters.json" };
+
+        final ApiCommandLineArguments badArguments = new ApiCommandLineArguments();
+        badArguments.parse(badArgumentString);
+
+        try {
+            new ApiParameterHandler().getParameters(badArguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            assertEquals("error reading parameters from \"parameters/BadParameters.json\"\n"
+                    + "(JsonSyntaxException):java.lang.IllegalStateException: "
+                    + "Expected a string but was BEGIN_ARRAY at line 2 column 15 path $.name", e.getMessage());
+        }
+    }
+
+    @Test
+    public void testParameterHandlerInvalidParameters() throws PolicyApiException {
+        final String[] invalidArgumentString =
+        { "-c", "parameters/InvalidParameters.json" };
+
+        final ApiCommandLineArguments invalidArguments = new ApiCommandLineArguments();
+        invalidArguments.parse(invalidArgumentString);
+
+        try {
+            new ApiParameterHandler().getParameters(invalidArguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            assertEquals("error reading parameters from \"parameters/InvalidParameters.json\"\n"
+                    + "(JsonSyntaxException):java.lang.IllegalStateException: "
+                    + "Expected a string but was BEGIN_ARRAY at line 2 column 15 path $.name", e.getMessage());
+        }
+    }
+
+    @Test
+    public void testParameterHandlerNoParameters() throws PolicyApiException {
+        final String[] noArgumentString =
+        { "-c", "parameters/NoParameters.json" };
+
+        final ApiCommandLineArguments noArguments = new ApiCommandLineArguments();
+        noArguments.parse(noArgumentString);
+
+        try {
+            new ApiParameterHandler().getParameters(noArguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            String expMsg = "validation error(s) on parameters from \"parameters/NoParameters.json\"\nparameter group "
+                    + "\"null\" type \"org.onap.policy.api.main.parameters.ApiParameterGroup\" INVALID, parameter "
+                    + "group has status INVALID\n"
+                    + "  field \"name\" type \"java.lang.String\" value \"null\" INVALID, must be a non-blank string\n";
+            assertEquals(expMsg, e.getMessage());
+        }
+    }
+
+    @Test
+    public void testParameterHandlerMinumumParameters() throws PolicyApiException {
+        final String[] minArgumentString =
+        { "-c", "parameters/MinimumParameters.json" };
+
+        final ApiCommandLineArguments minArguments = new ApiCommandLineArguments();
+        minArguments.parse(minArgumentString);
+
+        final ApiParameterGroup parGroup = new ApiParameterHandler().getParameters(minArguments);
+        assertEquals(CommonTestData.API_GROUP_NAME, parGroup.getName());
+    }
+
+    @Test
+    public void testApiParameterGroup() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters.json" };
+
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        arguments.parse(apiConfigParameters);
+
+        final ApiParameterGroup parGroup = new ApiParameterHandler().getParameters(arguments);
+        assertTrue(arguments.checkSetConfigurationFilePath());
+        assertEquals(CommonTestData.API_GROUP_NAME, parGroup.getName());
+    }
+
+    @Test
+    public void testApiParameterGroup_InvalidName() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters_InvalidName.json" };
+
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        arguments.parse(apiConfigParameters);
+
+        try {
+            new ApiParameterHandler().getParameters(arguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            assertTrue(e.getMessage().contains(
+                    "field \"name\" type \"java.lang.String\" value \" \" INVALID, must be a non-blank string"));
+        }
+    }
+
+    @Test
+    public void testApiParameterGroup_InvalidRestServerParameters()
+            throws PolicyApiException, IOException {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters_InvalidRestServerParameters.json" };
+
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        arguments.parse(apiConfigParameters);
+
+        try {
+            new ApiParameterHandler().getParameters(arguments);
+            fail("test should throw an exception here");
+        } catch (final Exception e) {
+            final String expectedResult = new String(Files.readAllBytes(
+                    Paths.get("src/test/resources/expectedValidationResults/InvalidRestServerParameters.txt")))
+                            .replaceAll("\\s+", "");
+            assertEquals(expectedResult, e.getMessage().replaceAll("\\s+", ""));
+        }
+    }
+
+    @Test
+    public void testApiVersion() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-v" };
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        final String version = arguments.parse(apiConfigParameters);
+        assertTrue(version.startsWith("ONAP Policy Framework Api Service"));
+    }
+
+    @Test
+    public void testApiHelp() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-h" };
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        final String help = arguments.parse(apiConfigParameters);
+        assertTrue(help.startsWith("usage:"));
+    }
+
+    @Test
+    public void testApiInvalidOption() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-d" };
+        final ApiCommandLineArguments arguments = new ApiCommandLineArguments();
+        try {
+            arguments.parse(apiConfigParameters);
+        } catch (final Exception exp) {
+            assertTrue(exp.getMessage().startsWith("invalid command line arguments specified"));
+        }
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/api/main/rest/TestApiRestServer.java b/main/src/test/java/org/onap/policy/api/main/rest/TestApiRestServer.java
new file mode 100644
index 00000000..ad63d0f1
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/rest/TestApiRestServer.java
@@ -0,0 +1,117 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.rest;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+
+import org.glassfish.jersey.client.ClientConfig;
+import org.glassfish.jersey.client.authentication.HttpAuthenticationFeature;
+import org.junit.Test;
+import org.onap.policy.api.main.PolicyApiException;
+import org.onap.policy.api.main.parameters.CommonTestData;
+import org.onap.policy.api.main.parameters.RestServerParameters;
+import org.onap.policy.api.main.startstop.Main;
+import org.onap.policy.common.endpoints.report.HealthCheckReport;
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+
+/**
+ * Class to perform unit test of HealthCheckMonitor.
+ *
+ */
+public class TestApiRestServer {
+
+    private static final Logger LOGGER = FlexLogger.getLogger(TestApiRestServer.class);
+    private static final String NOT_ALIVE = "not alive";
+    private static final String ALIVE = "alive";
+    private static final String SELF = "self";
+    private static final String NAME = "Policy API";
+
+    @Test
+    public void testHealthCheckSuccess() throws PolicyApiException, InterruptedException {
+        final String reportString = "Report [name=Policy API, url=self, healthy=true, code=200, message=alive]";
+        final Main main = startApiService();
+        final HealthCheckReport report = performHealthCheck();
+        validateReport(NAME, SELF, true, 200, ALIVE, reportString, report);
+        stopApiService(main);
+    }
+
+    @Test
+    public void testHealthCheckFailure() throws InterruptedException {
+        final String reportString = "Report [name=Policy API, url=self, healthy=false, code=500, message=not alive]";
+        final RestServerParameters restServerParams = new CommonTestData().getRestServerParameters(false);
+        restServerParams.setName(CommonTestData.API_GROUP_NAME);
+        final ApiRestServer restServer = new ApiRestServer(restServerParams);
+        restServer.start();
+        final HealthCheckReport report = performHealthCheck();
+        validateReport(NAME, SELF, false, 500, NOT_ALIVE, reportString, report);
+        assertTrue(restServer.isAlive());
+        assertTrue(restServer.toString().startsWith("ApiRestServer [servers="));
+        restServer.shutdown();
+    }
+
+    private Main startApiService() {
+        final String[] apiConfigParameters = { "-c", "parameters/ApiConfigParameters.json" };
+        return new Main(apiConfigParameters);
+    }
+
+    private void stopApiService(final Main main) throws PolicyApiException {
+        main.shutdown();
+    }
+
+    private HealthCheckReport performHealthCheck() throws InterruptedException {
+        HealthCheckReport response = null;
+        final ClientConfig clientConfig = new ClientConfig();
+
+        final HttpAuthenticationFeature feature = HttpAuthenticationFeature.basic("healthcheck", "zb!XztG34");
+        clientConfig.register(feature);
+
+        final Client client = ClientBuilder.newClient(clientConfig);
+        final WebTarget webTarget = client.target("http://localhost:6969/healthcheck");
+
+        final Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);
+        while (response == null) {
+            try {
+                response = invocationBuilder.get(HealthCheckReport.class);
+            } catch (final Exception exp) {
+                LOGGER.info("the server is not started yet. We will retry again");
+            }
+        }
+        return response;
+    }
+
+    private void validateReport(final String name, final String url, final boolean healthy, final int code,
+            final String message, final String reportString, final HealthCheckReport report) {
+        assertEquals(name, report.getName());
+        assertEquals(url, report.getUrl());
+        assertEquals(healthy, report.isHealthy());
+        assertEquals(code, report.getCode());
+        assertEquals(message, report.getMessage());
+        assertEquals(reportString, report.toString());
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/api/main/startstop/TestApiActivator.java b/main/src/test/java/org/onap/policy/api/main/startstop/TestApiActivator.java
new file mode 100644
index 00000000..e5ab8101
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/startstop/TestApiActivator.java
@@ -0,0 +1,55 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.startstop;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.onap.policy.api.main.PolicyApiException;
+import org.onap.policy.api.main.parameters.ApiParameterGroup;
+import org.onap.policy.api.main.parameters.ApiParameterHandler;
+import org.onap.policy.api.main.parameters.CommonTestData;
+
+
+/**
+ * Class to perform unit test of ApiActivator.
+ *
+ */
+public class TestApiActivator {
+
+    @Test
+    public void testApiActivator() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters.json" };
+
+        final ApiCommandLineArguments arguments =
+                new ApiCommandLineArguments(apiConfigParameters);
+
+        final ApiParameterGroup parGroup = new ApiParameterHandler().getParameters(arguments);
+
+        final ApiActivator activator = new ApiActivator(parGroup);
+        activator.initialize();
+        assertTrue(activator.getParameterGroup().isValid());
+        assertEquals(CommonTestData.API_GROUP_NAME, activator.getParameterGroup().getName());
+        activator.terminate();
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/api/main/startstop/TestMain.java b/main/src/test/java/org/onap/policy/api/main/startstop/TestMain.java
new file mode 100644
index 00000000..47725349
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/api/main/startstop/TestMain.java
@@ -0,0 +1,76 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Samsung Electronics Co., Ltd. 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.policy.api.main.startstop;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.onap.policy.api.main.PolicyApiException;
+import org.onap.policy.api.main.parameters.CommonTestData;
+
+/**
+ * Class to perform unit test of Main.
+ *
+ */
+public class TestMain {
+
+    @Test
+    public void testMain() throws PolicyApiException {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters.json" };
+        final Main main = new Main(apiConfigParameters);
+        assertTrue(main.getParameters().isValid());
+        assertEquals(CommonTestData.API_GROUP_NAME, main.getParameters().getName());
+        main.shutdown();
+    }
+
+    @Test
+    public void testMain_NoArguments() {
+        final String[] apiConfigParameters =
+        {};
+        final Main main = new Main(apiConfigParameters);
+        assertTrue(main.getParameters() == null);
+    }
+
+    @Test
+    public void testMain_InvalidArguments() {
+        final String[] apiConfigParameters =
+        { "parameters/ApiConfigParameters.json" };
+        final Main main = new Main(apiConfigParameters);
+        assertTrue(main.getParameters() == null);
+    }
+
+    @Test
+    public void testMain_Help() {
+        final String[] apiConfigParameters =
+        { "-h" };
+        Main.main(apiConfigParameters);
+    }
+
+    @Test
+    public void testMain_InvalidParameters() {
+        final String[] apiConfigParameters =
+        { "-c", "parameters/ApiConfigParameters_InvalidName.json" };
+        final Main main = new Main(apiConfigParameters);
+        assertTrue(main.getParameters() == null);
+    }
+}
diff --git a/main/src/test/resources/expectedValidationResults/InvalidRestServerParameters.txt b/main/src/test/resources/expectedValidationResults/InvalidRestServerParameters.txt
new file mode 100644
index 00000000..2ab9c1b4
--- /dev/null
+++ b/main/src/test/resources/expectedValidationResults/InvalidRestServerParameters.txt
@@ -0,0 +1,7 @@
+validation error(s) on parameters from "parameters/ApiConfigParameters_InvalidRestServerParameters.json"
+parameter group "ApiGroup" type "org.onap.policy.api.main.parameters.ApiParameterGroup" INVALID, parameter group has status INVALID
+  parameter group "null" type "org.onap.policy.api.main.parameters.RestServerParameters" INVALID, parameter group has status INVALID
+    field "host" type "java.lang.String" value "" INVALID, must be a non-blank string containing hostname/ipaddress of the api rest server
+    field "port" type "int" value "-1" INVALID, must be a positive integer containing port of the api rest server
+    field "userName" type "java.lang.String" value "" INVALID, must be a non-blank string containing userName for api rest server credentials
+    field "password" type "java.lang.String" value "" INVALID, must be a non-blank string containing password for api rest server credentials
diff --git a/main/src/test/resources/parameters/ApiConfigParameters.json b/main/src/test/resources/parameters/ApiConfigParameters.json
new file mode 100644
index 00000000..8fae1238
--- /dev/null
+++ b/main/src/test/resources/parameters/ApiConfigParameters.json
@@ -0,0 +1,9 @@
+{
+    "name":"ApiGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
+}
diff --git a/main/src/test/resources/parameters/ApiConfigParameters_InvalidName.json b/main/src/test/resources/parameters/ApiConfigParameters_InvalidName.json
new file mode 100644
index 00000000..80fb8232
--- /dev/null
+++ b/main/src/test/resources/parameters/ApiConfigParameters_InvalidName.json
@@ -0,0 +1,9 @@
+{
+    "name":" ",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
+}
diff --git a/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json b/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json
new file mode 100644
index 00000000..2d394fbc
--- /dev/null
+++ b/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json
@@ -0,0 +1,9 @@
+{
+    "name":"ApiGroup",
+    "restServerParameters":{
+        "host":"",
+        "port":-1,
+        "userName":"",
+        "password":""
+    }
+}
diff --git a/main/src/test/resources/parameters/BadParameters.json b/main/src/test/resources/parameters/BadParameters.json
new file mode 100644
index 00000000..de2040cc
--- /dev/null
+++ b/main/src/test/resources/parameters/BadParameters.json
@@ -0,0 +1,3 @@
+{
+    "name" : []
+}
\ No newline at end of file
diff --git a/main/src/test/resources/parameters/EmptyParameters.json b/main/src/test/resources/parameters/EmptyParameters.json
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/main/src/test/resources/parameters/EmptyParameters.json
diff --git a/main/src/test/resources/parameters/InvalidParameters.json b/main/src/test/resources/parameters/InvalidParameters.json
new file mode 100644
index 00000000..de2040cc
--- /dev/null
+++ b/main/src/test/resources/parameters/InvalidParameters.json
@@ -0,0 +1,3 @@
+{
+    "name" : []
+}
\ No newline at end of file
diff --git a/main/src/test/resources/parameters/MinimumParameters.json b/main/src/test/resources/parameters/MinimumParameters.json
new file mode 100644
index 00000000..61c6c869
--- /dev/null
+++ b/main/src/test/resources/parameters/MinimumParameters.json
@@ -0,0 +1,9 @@
+{  
+    "name":"ApiGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
+}
diff --git a/main/src/test/resources/parameters/NoParameters.json b/main/src/test/resources/parameters/NoParameters.json
new file mode 100644
index 00000000..6b0805d3
--- /dev/null
+++ b/main/src/test/resources/parameters/NoParameters.json
@@ -0,0 +1,8 @@
+{
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
+}
\ No newline at end of file