Bump XacmlPdpApplicationManager code coverage

From under 50% to over 90%.

Issue-ID: POLICY-2242
Change-Id: Ie061bddbdd2fcdb37bed608847449e5bc92173b5
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>

1 files changed, 200 insertions, 0 deletions

diff --git a/main/src/test/java/org/onap/policy/pdpx/main/rest/XacmlPdpApplicationManagerTest.java b/main/src/test/java/org/onap/policy/pdpx/main/rest/XacmlPdpApplicationManagerTest.java
new file mode 100644
index 00000000..243c9eab
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/rest/XacmlPdpApplicationManagerTest.java
@@ -0,0 +1,200 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 AT&T Intellectual Property. 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.pdpx.main.rest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.util.Map;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardYamlCoder;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
+import org.onap.policy.models.tosca.simple.concepts.JpaToscaServiceTemplate;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationException;
+import org.onap.policy.xacml.pdp.application.guard.GuardPdpApplication;
+import org.onap.policy.xacml.pdp.application.nativ.NativePdpApplication;
+import org.onap.policy.xacml.pdp.application.optimization.OptimizationPdpApplication;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class XacmlPdpApplicationManagerTest {
+    private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpApplicationManagerTest.class);
+    private static final StandardYamlCoder yamlCoder = new StandardYamlCoder();
+    private static final RestServerParameters params = new RestServerParameters();
+    private static Path appsDirectory;
+    private static ToscaServiceTemplate completedJtst;
+
+    @ClassRule
+    public static final TemporaryFolder appsFolder = new TemporaryFolder();
+
+    /**
+     * setupTestEnvironment.
+     *
+     * @throws Exception Exception if anything is missing
+     */
+    @BeforeClass
+    public static void setupTestEnvironment() throws Exception {
+        //
+        // No need to do more than this
+        //
+        params.setName("policyApiParameters");
+        //
+        // Load an example policy
+        //
+        String policyYaml = ResourceUtils
+                .getResourceAsString("../applications/monitoring/src/test/resources/vDNS.policy.input.yaml");
+        //
+        // Serialize it into a class
+        //
+        ToscaServiceTemplate serviceTemplate;
+        try {
+            serviceTemplate = yamlCoder.decode(policyYaml, ToscaServiceTemplate.class);
+        } catch (CoderException e) {
+            throw new XacmlApplicationException("Failed to decode policy from resource file", e);
+        }
+        //
+        // Make sure all the fields are setup properly
+        //
+        JpaToscaServiceTemplate jtst = new JpaToscaServiceTemplate();
+        jtst.fromAuthorative(serviceTemplate);
+        completedJtst = jtst.toAuthorative();
+        //
+        // We need at least 1 policies
+        //
+        assertThat(completedJtst).isNotNull();
+        assertThat(completedJtst.getToscaTopologyTemplate().getPolicies().size()).isGreaterThan(0);
+        //
+        // Copy test directory over of the application directories
+        //
+        Path src = Paths.get("src/test/resources/apps");
+        File apps = appsFolder.newFolder("apps");
+        Files.walk(src).forEach(source -> {
+            copy(source, apps.toPath().resolve(src.relativize(source)));
+        });
+        appsDirectory = apps.toPath();
+    }
+
+    @Test
+    public void testXacmlPdpApplicationManagerBadPath() throws Exception {
+        //
+        // Make up a non existent directory to initialize from
+        //
+        Path nonExistentPath = Paths.get(appsFolder.getRoot().getAbsolutePath(), "nonexistent");
+        //
+        // Create our app manager
+        //
+        XacmlPdpApplicationManager manager = new XacmlPdpApplicationManager(nonExistentPath, params);
+        //
+        // Still creates the manager, but the apps were not able to initialize
+        //
+        assertThat(manager).isNotNull();
+        assertThat(manager.findNativeApplication()).isNull();
+        //
+        // Now create the directory
+        //
+        Files.createDirectory(nonExistentPath);
+        manager = new XacmlPdpApplicationManager(nonExistentPath, params);
+        //
+        // Now it should have initialized the apps
+        //
+        assertThat(manager).isNotNull();
+        assertThat(manager.findNativeApplication()).isNull();
+    }
+
+    @Test
+    public void testXacmlPdpApplicationManagerSimple() {
+        XacmlPdpApplicationManager manager = new XacmlPdpApplicationManager(appsDirectory, params);
+        //
+        // Test the basics from the startup
+        //
+        assertThat(manager).isNotNull();
+        assertThat(manager.getPolicyCount()).isEqualTo(0);
+        assertThat(manager.getPolicyTypeCount()).isEqualTo(19);
+        assertThat(manager.getToscaPolicies()).isEmpty();
+        assertThat(manager.getToscaPolicyIdentifiers()).isEmpty();
+        assertThat(manager.getToscaPolicyTypeIdents()).hasSize(19);
+
+        assertThat(manager.findNativeApplication()).isInstanceOf(NativePdpApplication.class);
+
+        DecisionRequest request = new DecisionRequest();
+        request.setAction("optimize");
+        assertThat(manager.findApplication(request)).isInstanceOf(OptimizationPdpApplication.class);
+        request.setAction("guard");
+        assertThat(manager.findApplication(request)).isInstanceOf(GuardPdpApplication.class);
+        //
+        // Try to unload a policy that isn't loaded
+        //
+        ToscaPolicy policy = null;
+        for (Map<String, ToscaPolicy> map : completedJtst.getToscaTopologyTemplate().getPolicies()) {
+            policy = map.get("onap.scaleout.tca");
+        }
+        assertThat(policy).isNotNull();
+        //
+        // Without this being set, it throws NonNull Exception
+        //
+        policy.setTypeVersion("1.0.0");
+        //
+        // Try loading and unloading
+        //
+        final ToscaPolicy policyFinal = policy;
+        assertThatCode(() -> {
+            manager.removeUndeployedPolicy(policyFinal);
+            assertThat(manager.getPolicyCount()).isEqualTo(0);
+            manager.loadDeployedPolicy(policyFinal);
+            assertThat(manager.getPolicyCount()).isEqualTo(1);
+            manager.removeUndeployedPolicy(policyFinal);
+            assertThat(manager.getPolicyCount()).isEqualTo(0);
+        }).doesNotThrowAnyException();
+        //
+        // try loading something unsupported
+        //
+        assertThatExceptionOfType(XacmlApplicationException.class).isThrownBy(() -> {
+            ToscaPolicy unsupportedPolicy = new ToscaPolicy();
+            unsupportedPolicy.setType("I.am.not.supported");
+            unsupportedPolicy.setTypeVersion("5.5.5");
+            manager.loadDeployedPolicy(unsupportedPolicy);
+        });
+    }
+
+    private static void copy(Path source, Path dest) {
+        try {
+            Files.copy(source, dest, StandardCopyOption.REPLACE_EXISTING);
+        } catch (IOException e) {
+            LOGGER.error("Failed to copy {} to {}", source, dest);
+        }
+    }
+
+}