Add test cases for consolidated policy health check

Issue-ID: POLICY-1689
Signed-off-by: huaxing <huaxing.jin@est.tech>
Change-Id: Ifda17a4486e1bce1ce0f523cc1984519b7fbc1aa

2 files changed, 277 insertions, 1 deletions

diff --git a/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckControllerV1.java b/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckControllerV1.java
index f73178b7..cf0da937 100644
--- a/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckControllerV1.java
+++ b/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckControllerV1.java
@@ -1,6 +1,6 @@
 /*-
  * ============LICENSE_START=======================================================
- *  Copyright (C) 2019 Nordix Foundation.
+ *  Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +20,23 @@
 
 package org.onap.policy.pap.main.rest;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.core.GenericType;
+import javax.ws.rs.core.Response;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
 import org.junit.Test;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.parameters.ParameterService;
+import org.onap.policy.pap.main.parameters.PapParameterGroup;
+import org.powermock.reflect.Whitebox;
 
 /**
  * Class to perform unit test of {@link PolicyComponentsHealthCheckControllerV1}.
@@ -30,9 +46,45 @@ import org.junit.Test;
 public class TestPolicyComponentsHealthCheckControllerV1 extends CommonPapRestServer {
 
     private static final String ENDPOINT = "components/healthcheck";
+    private static List<BusTopicParams> savedBusTopicParams;
+
+    /**
+     * Set up for the test class.
+     */
+    @BeforeClass
+    public static void setUpClass() {
+        // To skip calling to the remote components
+        PapParameterGroup papParameterGroup = ParameterService.get("PapGroup");
+        List<BusTopicParams> lo = Whitebox.getInternalState(papParameterGroup,
+            "healthCheckRestClientParameters");
+        savedBusTopicParams = new ArrayList<>(lo);
+        lo.clear();
+    }
+
+    /**
+     * Tear down for the test class.
+     */
+    @AfterClass
+    public static void tearDownClass() {
+        PapParameterGroup papParameterGroup = ParameterService.get("PapGroup");
+        List<BusTopicParams> lo = Whitebox.getInternalState(papParameterGroup,
+            "healthCheckRestClientParameters");
+        lo.addAll(savedBusTopicParams);
+    }
 
     @Test
     public void testSwagger() throws Exception {
         super.testSwagger(ENDPOINT);
     }
+
+    @Test
+    public void testPolicyComponentsHealthCheck() throws Exception {
+        Invocation.Builder invocationBuilder = sendRequest(ENDPOINT);
+        Response response = invocationBuilder.get();
+        assertEquals(Response.Status.OK.getStatusCode(), response.getStatus());
+        Map<String, Object> result = new HashMap<>();
+        result = (Map<String, Object>) response.readEntity(GenericType.forInstance(result));
+        // No PDP configured, healthy is false
+        assertFalse((Boolean) result.get("healthy"));
+    }
 }
diff --git a/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckProvider.java b/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckProvider.java
new file mode 100644
index 00000000..2fdb2e6e
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pap/main/rest/TestPolicyComponentsHealthCheckProvider.java
@@ -0,0 +1,224 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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.pap.main.rest;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+import java.net.HttpURLConnection;
+import java.util.List;
+import java.util.Map;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import org.apache.commons.lang3.tuple.Pair;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
+import org.onap.policy.common.endpoints.report.HealthCheckReport;
+import org.onap.policy.common.parameters.ParameterService;
+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.resources.ResourceUtils;
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.pdp.concepts.Pdp;
+import org.onap.policy.models.pdp.concepts.PdpGroup;
+import org.onap.policy.models.pdp.concepts.PdpGroups;
+import org.onap.policy.models.pdp.enums.PdpHealthStatus;
+import org.onap.policy.models.provider.PolicyModelsProvider;
+import org.onap.policy.pap.main.PapConstants;
+import org.onap.policy.pap.main.PolicyModelsProviderFactoryWrapper;
+import org.onap.policy.pap.main.parameters.CommonTestData;
+import org.onap.policy.pap.main.parameters.PapParameterGroup;
+import org.onap.policy.pap.main.startstop.PapActivator;
+
+public class TestPolicyComponentsHealthCheckProvider {
+
+    private static final String CLIENT_1 = "client1";
+    private static final String PDP_GROUP_DATA_FILE = "rest/pdpGroup.json";
+    private static final String PAP_GROUP_PARAMS_NAME = "PapGroup";
+
+    @Mock
+    private PolicyModelsProvider dao;
+
+    @Mock
+    private PolicyModelsProviderFactoryWrapper daofact;
+
+    @Mock
+    private HttpClientFactory clientFactory;
+
+    @Mock
+    PapActivator papActivator;
+
+    @Mock
+    private HttpClient client1;
+
+    @Mock
+    private HttpClient client2;
+
+    @Mock
+    private Response response1;
+
+    @Mock
+    private Response response2;
+
+    private List<PdpGroup> groups;
+
+    private PapParameterGroup savedPapParameterGroup;
+
+    /**
+     * Configures mocks and objects.
+     *
+     * @throws Exception if an error occurs
+     */
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+
+        groups = loadPdpGroupsFromFile().getGroups();
+        when(dao.getPdpGroups(any())).thenReturn(groups);
+
+        when(daofact.create()).thenReturn(dao);
+        Registry.newRegistry();
+        Registry.register(PapConstants.REG_PAP_DAO_FACTORY, daofact);
+
+        when(papActivator.isAlive()).thenReturn(true);
+        Registry.register(PapConstants.REG_PAP_ACTIVATOR, papActivator);
+
+        if (ParameterService.contains(PAP_GROUP_PARAMS_NAME)) {
+            savedPapParameterGroup = ParameterService.get(PAP_GROUP_PARAMS_NAME);
+        }
+        CommonTestData testData = new CommonTestData();
+        ParameterService.register(testData.getPapParameterGroup(0), true);
+
+        when(client1.getName()).thenReturn(CLIENT_1);
+        when(client1.getBaseUrl()).thenReturn("url1");
+        when(response1.getStatus()).thenReturn(HttpURLConnection.HTTP_OK);
+        when(response1.readEntity(HealthCheckReport.class))
+            .thenReturn(createReport(HttpURLConnection.HTTP_OK, true));
+        when(client1.get()).thenReturn(response1);
+
+        when(client2.getName()).thenReturn("client2");
+        when(client2.getBaseUrl()).thenReturn("url2");
+        when(response2.getStatus()).thenReturn(HttpURLConnection.HTTP_OK);
+        when(response2.readEntity(HealthCheckReport.class))
+            .thenReturn(createReport(HttpURLConnection.HTTP_OK, true));
+        when(client2.get()).thenReturn(response2);
+
+        PapParameterGroup papParameterGroup =  ParameterService.get(PAP_GROUP_PARAMS_NAME);
+        List<BusTopicParams> params = papParameterGroup.getHealthCheckRestClientParameters();
+        when(clientFactory.build(params.get(0))).thenReturn(client1);
+        when(clientFactory.build(params.get(1))).thenReturn(client2);
+    }
+
+    /**
+     * Tear down.
+     */
+    @After
+    public void tearDown() {
+        if (savedPapParameterGroup != null) {
+            ParameterService.register(savedPapParameterGroup, true);
+        } else {
+            ParameterService.deregister(PAP_GROUP_PARAMS_NAME);
+        }
+    }
+
+    @Test
+    public void testFetchPolicyComponentsHealthStatus_allHealthy() throws Exception {
+        PolicyComponentsHealthCheckProvider provider = new PolicyComponentsHealthCheckProvider(clientFactory);
+        Pair<Status, Map<String, Object>> ret = provider.fetchPolicyComponentsHealthStatus();
+        assertEquals(ret.getLeft(), Response.Status.OK);
+        assertTrue((Boolean) ret.getRight().get("healthy"));
+    }
+
+    @Test
+    public void testFetchPolicyComponentsHealthStatus_unhealthyClient() throws Exception {
+        when(response1.getStatus()).thenReturn(HttpURLConnection.HTTP_INTERNAL_ERROR);
+        when(response1.readEntity(HealthCheckReport.class))
+            .thenReturn(createReport(HttpURLConnection.HTTP_INTERNAL_ERROR, false));
+        Map<String, Object> result = callFetchPolicyComponentsHealthStatus();
+        assertFalse((Boolean) result.get("healthy"));
+        HealthCheckReport report = (HealthCheckReport) result.get(CLIENT_1);
+        assertFalse(report.isHealthy());
+
+        when(response1.getStatus()).thenReturn(HttpURLConnection.HTTP_OK);
+        when(response1.readEntity(HealthCheckReport.class))
+            .thenReturn(createReport(HttpURLConnection.HTTP_OK, false));
+        Map<String, Object> result2 = callFetchPolicyComponentsHealthStatus();
+        assertFalse((Boolean) result2.get("healthy"));
+        HealthCheckReport report2 = (HealthCheckReport) result.get(CLIENT_1);
+        assertFalse(report.isHealthy());
+    }
+
+    @Test
+    public void testFetchPolicyComponentsHealthStatus_unhealthyPdps() throws Exception {
+        //Get a PDP and set it unhealthy
+        groups.get(0).getPdpSubgroups().get(0)
+            .getPdpInstances().get(0).setHealthy(PdpHealthStatus.NOT_HEALTHY);
+        Map<String, Object> result = callFetchPolicyComponentsHealthStatus();
+        Map<String, List<Pdp>> pdpListWithType = (Map<String, List<Pdp>>) result.get(PapConstants.POLICY_PDPS);
+        assertEquals(2, pdpListWithType.size());
+        assertFalse((Boolean) result.get("healthy"));
+    }
+
+    @Test
+    public void testFetchPolicyComponentsHealthStatus_unhealthyPap() throws Exception {
+        when(papActivator.isAlive()).thenReturn(false);
+        Map<String, Object> result = callFetchPolicyComponentsHealthStatus();
+        assertFalse((Boolean) result.get("healthy"));
+        HealthCheckReport report = (HealthCheckReport) result.get(PapConstants.POLICY_PAP);
+        assertFalse(report.isHealthy());
+    }
+
+    private Map<String, Object> callFetchPolicyComponentsHealthStatus() throws Exception {
+        PolicyComponentsHealthCheckProvider provider = new PolicyComponentsHealthCheckProvider(clientFactory);
+        return provider.fetchPolicyComponentsHealthStatus().getRight();
+    }
+
+    private HealthCheckReport createReport(int code, boolean healthy) {
+        HealthCheckReport report = new HealthCheckReport();
+        report.setName("name");
+        report.setUrl("url");
+        report.setCode(code);
+        report.setHealthy(healthy);
+        report.setMessage("message");
+        return report;
+    }
+
+    private static PdpGroups loadPdpGroupsFromFile() {
+        final File propFile = new File(ResourceUtils.getFilePath4Resource(PDP_GROUP_DATA_FILE));
+        try {
+            Coder coder = new StandardCoder();
+            return coder.decode(propFile, PdpGroups.class);
+        } catch (final CoderException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
\ No newline at end of file