BIGTOP-4329: Add some unit tests for agent module

bigtop-manager-agent/src/main/java/org/apache/bigtop/manager/agent/service/CommandServiceGrpcImpl.java

@@ -63,7 +63,7 @@ public void exec(CommandRequest request, StreamObserver<CommandReply> responseOb
         }
     }
 
-    private void truncateLogFile(Long taskId) {
+    protected void truncateLogFile(Long taskId) {
         String filePath = ProjectPathUtils.getLogFilePath(taskId);
         File file = new File(filePath);
         if (file.exists()) {

bigtop-manager-agent/src/test/java/org/apache/bigtop/manager/agent/holder/SpringContextHolderTest.java

@@ -0,0 +1,78 @@
+/*
+ * 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
+ *
+ *    https://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.bigtop.manager.agent.holder;
+
+import org.apache.bigtop.manager.agent.executor.CommandExecutor;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.context.ApplicationContext;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+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.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+public class SpringContextHolderTest {
+
+    @Mock
+    private ApplicationContext mockApplicationContext;
+
+    @Mock
+    private CommandExecutor mockCommandExecutor;
+
+    @BeforeEach
+    public void setUp() throws Exception {
+        MockitoAnnotations.openMocks(this);
+
+        // Use reflection to set the static variable applicationContext
+        Field field = SpringContextHolder.class.getDeclaredField("applicationContext");
+        field.setAccessible(true);
+        field.set(null, mockApplicationContext);
+    }
+
+    @Test
+    public void testGetCommandExecutors() {
+        // Prepare test data
+        Map<String, CommandExecutor> commandExecutorsMap = new HashMap<>();
+        commandExecutorsMap.put("commandExecutor1", mockCommandExecutor);
+        when(mockApplicationContext.getBeansOfType(CommandExecutor.class)).thenReturn(commandExecutorsMap);
+
+        // Execute the method under test
+        Map<String, CommandExecutor> result = SpringContextHolder.getCommandExecutors();
+
+        // Validate the result
+        assertNotNull(result);
+        assertEquals(1, result.size());
+        assertTrue(result.containsKey("commandExecutor1"));
+        assertSame(mockCommandExecutor, result.get("commandExecutor1"));
+
+        // Verify method calls
+        verify(mockApplicationContext, times(1)).getBeansOfType(CommandExecutor.class);
+    }
+}

bigtop-manager-agent/src/test/java/org/apache/bigtop/manager/agent/monitoring/AgentHostMonitoringTest.java

@@ -0,0 +1,227 @@
+/*
+ * 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
+ *
+ *    https://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.bigtop.manager.agent.monitoring;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import io.micrometer.core.instrument.MultiGauge;
+import oshi.SystemInfo;
+import oshi.hardware.GlobalMemory;
+import oshi.hardware.HardwareAbstractionLayer;
+import oshi.software.os.OperatingSystem;
+
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.anyList;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+class AgentHostMonitoringTest {
+
+    @Mock
+    private SystemInfo systemInfo;
+
+    @Mock
+    private HardwareAbstractionLayer hardwareAbstractionLayer;
+
+    @Mock
+    private GlobalMemory globalMemory;
+
+    @Mock
+    private MultiGauge diskMultiGauge;
+
+    @Mock
+    private MultiGauge memMultiGauge;
+
+    @Mock
+    private MultiGauge cpuMultiGauge;
+
+    @Mock
+    private MultiGauge diskIOMultiGauge;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        when(systemInfo.getOperatingSystem()).thenReturn(mock(OperatingSystem.class));
+        when(systemInfo.getHardware()).thenReturn(hardwareAbstractionLayer);
+        when(hardwareAbstractionLayer.getMemory()).thenReturn(globalMemory);
+        when(globalMemory.getAvailable()).thenReturn(100000L);
+        when(globalMemory.getTotal()).thenReturn(200000L);
+    }
+
+    @Test
+    void testGetHostInfo() throws UnknownHostException {
+        JsonNode hostInfo = AgentHostMonitoring.getHostInfo();
+
+        // Check if the host information contains expected fields
+        assertTrue(hostInfo.has(AgentHostMonitoring.AGENT_BASE_INFO));
+        assertTrue(hostInfo.has(AgentHostMonitoring.BOOT_TIME));
+        assertTrue(hostInfo.has(AgentHostMonitoring.MEM_IDLE));
+        assertTrue(hostInfo.has(AgentHostMonitoring.MEM_TOTAL));
+    }
+
+    @Test
+    void testGetDiskGauge() {
+        // Create a mock JsonNode object
+        JsonNode agentMonitoring = mock(JsonNode.class);
+
+        // Create a mock agentHostInfo object and set its fields
+        ObjectNode agentHostInfo = mock(ObjectNode.class);
+        when(agentMonitoring.get(AgentHostMonitoring.AGENT_BASE_INFO)).thenReturn(agentHostInfo);
+        when(agentHostInfo.fieldNames()).thenReturn(Collections.emptyIterator());
+
+        // Create a mock disksBaseInfo object and set its fields
+        ArrayNode disksBaseInfo = mock(ArrayNode.class);
+        when(agentMonitoring.get(AgentHostMonitoring.DISKS_BASE_INFO)).thenReturn(disksBaseInfo);
+
+        // Create a mock diskJsonNode object and set its fields
+        ObjectNode diskJsonNode = mock(ObjectNode.class);
+        when(disksBaseInfo.get(0)).thenReturn(diskJsonNode);
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_NAME)).thenReturn(mock(JsonNode.class));
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_IDLE)).thenReturn(mock(JsonNode.class));
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_TOTAL)).thenReturn(mock(JsonNode.class));
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_NAME).asText()).thenReturn("disk1");
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_IDLE).asDouble()).thenReturn(0.9);
+        when(diskJsonNode.get(AgentHostMonitoring.DISK_TOTAL).asDouble()).thenReturn(100.0);
+
+        // Call the getDiskGauge method
+        Map<ArrayList<String>, Map<ArrayList<String>, Double>> diskGauge =
+                AgentHostMonitoring.getDiskGauge(agentMonitoring);
+
+        // Assert that the disk gauge data is populated correctly
+        assertNotNull(diskGauge);
+        assertFalse(diskGauge.isEmpty());
+    }
+
+    @Test
+    void testGetCPUGauge() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        ObjectNode agentMonitoring = objectMapper.createObjectNode();
+        ObjectNode agentHostInfo = objectMapper.createObjectNode();
+
+        // Set AGENT_BASE_INFO fields
+        agentHostInfo.put("field1", "value1");
+        agentHostInfo.put("field2", "value2");
+        agentMonitoring.set(AgentHostMonitoring.AGENT_BASE_INFO, agentHostInfo);
+
+        // Set CPU related fields
+        agentMonitoring
+                .put(AgentHostMonitoring.CPU_LOAD_AVG_MIN_1, 1.0)
+                .put(AgentHostMonitoring.CPU_LOAD_AVG_MIN_5, 5.0)
+                .put(AgentHostMonitoring.CPU_LOAD_AVG_MIN_15, 15.0)
+                .put(AgentHostMonitoring.CPU_USAGE, 10.0);
+
+        Map<ArrayList<String>, Map<ArrayList<String>, Double>> cpuGauge =
+                AgentHostMonitoring.getCPUGauge(agentMonitoring);
+
+        // Assert that the CPU gauge data is populated correctly
+        assertNotNull(cpuGauge);
+        assertFalse(cpuGauge.isEmpty());
+    }
+
+    @Test
+    void testGetMEMGauge() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        ObjectNode agentMonitoring = objectMapper.createObjectNode();
+        ObjectNode agentHostInfo = objectMapper.createObjectNode();
+
+        // Set AGENT_BASE_INFO fields
+        agentHostInfo.put("field1", "value1");
+        agentHostInfo.put("field2", "value2");
+        agentMonitoring.set(AgentHostMonitoring.AGENT_BASE_INFO, agentHostInfo);
+
+        // Set MEM related fields
+        agentMonitoring.put(AgentHostMonitoring.MEM_IDLE, 2000.0).put(AgentHostMonitoring.MEM_TOTAL, 4000.0);
+
+        Map<ArrayList<String>, Map<ArrayList<String>, Double>> memGauge =
+                AgentHostMonitoring.getMEMGauge(agentMonitoring);
+
+        // Assert that the MEM gauge data is populated correctly
+        assertNotNull(memGauge);
+        assertFalse(memGauge.isEmpty());
+    }
+
+    @Test
+    void testMultiGaugeUpdateData() {
+        // Create a mock Map object
+        Map<ArrayList<String>, Map<ArrayList<String>, Double>> diskGauge = new HashMap<>();
+        Map<ArrayList<String>, Double> innerMap = new HashMap<>();
+        innerMap.put(new ArrayList<>(Arrays.asList("label1", "label2")), 1.0);
+        diskGauge.put(new ArrayList<>(Arrays.asList("label1", "label2")), innerMap);
+
+        // Create a mock MultiGauge object
+        MultiGauge diskMultiGauge = mock(MultiGauge.class);
+
+        // Call the test method
+        AgentHostMonitoring.multiGaugeUpdateData(diskMultiGauge, diskGauge);
+
+        // Verify that the register method is called once
+        verify(diskMultiGauge, times(1)).register(anyList(), eq(true));
+    }
+
+    @Test
+    void testDiskMultiGaugeUpdateData() {
+        AgentHostMonitoring.diskMultiGaugeUpdateData(diskMultiGauge);
+
+        // Verify that the multi-gauge update method was called
+        verify(diskMultiGauge, times(1)).register(anyList(), eq(true));
+    }
+
+    @Test
+    void testMemMultiGaugeUpdateData() {
+        AgentHostMonitoring.memMultiGaugeUpdateData(memMultiGauge);
+
+        // Verify that the multi-gauge update method was called
+        verify(memMultiGauge, times(1)).register(anyList(), eq(true));
+    }
+
+    @Test
+    void testCpuMultiGaugeUpdateData() {
+        AgentHostMonitoring.cpuMultiGaugeUpdateData(cpuMultiGauge);
+
+        // Verify that the multi-gauge update method was called
+        verify(cpuMultiGauge, times(1)).register(anyList(), eq(true));
+    }
+
+    @Test
+    void testDiskIOMultiGaugeUpdateData() {
+        AgentHostMonitoring.diskIOMultiGaugeUpdateData(diskIOMultiGauge);
+
+        // Verify that the multi-gauge update method was called
+        verify(diskIOMultiGauge, times(1)).register(anyList(), eq(true));
+    }
+}