RANGER-5580:Add unit test cases for plugin-kylin Module

plugin-kylin/pom.xml

@@ -252,6 +252,13 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
+            <version>${mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>${mockito.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>

plugin-kylin/src/test/java/org/apache/ranger/services/kylin/TestRangerServiceKylin.java

@@ -0,0 +1,144 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.ranger.services.kylin;
+
+import org.apache.ranger.plugin.client.HadoopException;
+import org.apache.ranger.plugin.model.RangerService;
+import org.apache.ranger.plugin.model.RangerServiceDef;
+import org.apache.ranger.plugin.service.ResourceLookupContext;
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * @generated by Cursor
+ * @description : Unit Test cases for RangerServiceKylin
+ */
+@TestMethodOrder(MethodOrderer.MethodName.class)
+class TestRangerServiceKylin {
+    @Test
+    void test01_validateConfig_whenConfigsNull_returnsEmptyMap() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        svc.setConfigs(null);
+
+        Map<String, Object> res = svc.validateConfig();
+
+        assertNotNull(res);
+        assertTrue(res.isEmpty());
+    }
+
+    @Test
+    void test02_validateConfig_whenConfigsEmptyMap_propagatesHadoopException() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        svc.setServiceName("svc");
+        svc.setConfigs(Collections.emptyMap());
+
+        assertThrows(HadoopException.class, svc::validateConfig);
+    }
+
+    @Test
+    void test03_lookupResource_whenContextNull_returnsEmptyList() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        svc.setServiceName("svc");
+        svc.setConfigs(kylinClientConfigs("http://127.0.0.1:13"));
+
+        List<String> res = svc.lookupResource(null);
+
+        assertTrue(res.isEmpty());
+    }
+
+    @Test
+    void test04_lookupResource_whenConnectionConfigEmpty_returnsNull() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        svc.setServiceName("svc");
+        svc.setConfigs(Collections.emptyMap());
+        ResourceLookupContext ctx = new ResourceLookupContext();
+        ctx.setUserInput("any");
+
+        List<String> res = svc.lookupResource(ctx);
+
+        assertNull(res);
+    }
+
+    @Test
+    void test05_init_whenServiceDefAndServicePresent_populatesBaseStateFromService() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        RangerServiceDef   def = new RangerServiceDef();
+        Map<String, String> cfg = new HashMap<>();
+        cfg.put("kylin.url", "http://localhost:7070");
+        RangerService rs = new RangerService("kylin", "kylin-svc", null, null, cfg);
+
+        svc.init(def, rs);
+
+        assertSame(def, svc.getServiceDef());
+        assertSame(rs, svc.getService());
+        assertEquals(cfg, svc.getConfigs());
+        assertEquals("kylin-svc", svc.getServiceName());
+        assertEquals("kylin", svc.getServiceType());
+    }
+
+    @Test
+    void test06_init_whenServiceNull_throwsNullPointerException() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+
+        assertThrows(NullPointerException.class, () -> svc.init(new RangerServiceDef(), null));
+    }
+
+    @Test
+    void test07_lookupResource_whenGetKylinResourcesThrows_propagatesSameException() {
+        RangerServiceKylin svc = new RangerServiceKylin();
+        svc.setServiceName("svc");
+        svc.setConfigs(kylinClientConfigs("http://127.0.0.1:13"));
+        ResourceLookupContext ctx = new ResourceLookupContextThrowsOnResources();
+        ctx.setUserInput("q");
+
+        IllegalStateException ex =
+                assertThrows(IllegalStateException.class, () -> svc.lookupResource(ctx));
+
+        assertEquals("simulated resource lookup failure", ex.getMessage());
+    }
+
+    private static Map<String, String> kylinClientConfigs(String kylinUrl) {
+        Map<String, String> configs = new HashMap<>();
+        configs.put("kylin.url", kylinUrl);
+        configs.put("username", "u");
+        configs.put("password", "p");
+        configs.put("authtype", "simple");
+        configs.put("hadoop.security.authentication", "simple");
+        return configs;
+    }
+
+    private static final class ResourceLookupContextThrowsOnResources extends ResourceLookupContext {
+        @Override
+        public Map<String, List<String>> getResources() {
+            throw new IllegalStateException("simulated resource lookup failure");
+        }
+    }
+}