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add test

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Looly
2026-01-03 18:09:25 +08:00
parent 6b4c8e8379
commit 9fa3e9df2b
2 changed files with 374 additions and 49 deletions
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5
hutool-extra/src/main/java/cn/hutool/v7/extra/management/ManagementUtil.java
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@@ -37,10 +37,7 @@ import java.util.List;
/**
* Java的JMX（Java Management Extensions）相关封装工具类。<br>
* JMX就是Java管理扩展，用来管理和监测 Java 程序。最常用到的就是对于 JVM 的监测和管理，比如 JVM 内存、CPU 使用率、线程数、垃圾收集情况等等。<br>
* 参考：
* <a href="http://blog.csdn.net/zhongweijian/article/details/7619383">http://blog.csdn.net/zhongweijian/article/details/7619383</a><br>
* <a href="https://zhuanlan.zhihu.com/p/166530442">https://zhuanlan.zhihu.com/p/166530442</a>
* JMX就是Java管理扩展，用来管理和监测 Java 程序。最常用到的就是对于 JVM 的监测和管理，比如 JVM 内存、CPU 使用率、线程数、垃圾收集情况等等。
*
* @author Looly
*/

418
hutool-extra/src/test/java/cn/hutool/v7/extra/management/ManagementUtilTest.java
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@@ -16,63 +16,391 @@
package cn.hutool.v7.extra.management;
import cn.hutool.v7.core.util.SystemUtil;
import org.junit.jupiter.api.Assertions;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import javax.management.MBeanServer;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.PrintWriter;
import java.lang.management.*;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
@Slf4j
public class ManagementUtilTest {
// ----- 测试常量字段 -----
@Test
@Disabled
public void dumpTest() {
public void testConstantsNotNull() {
assertNotNull(ManagementUtil.SPECIFICATION_NAME);
assertNotNull(ManagementUtil.VERSION);
assertNotNull(ManagementUtil.SPECIFICATION_VERSION);
assertNotNull(ManagementUtil.VENDOR);
assertNotNull(ManagementUtil.SPECIFICATION_VENDOR);
assertNotNull(ManagementUtil.VENDOR_URL);
assertNotNull(ManagementUtil.HOME);
assertNotNull(ManagementUtil.LIBRARY_PATH);
assertNotNull(ManagementUtil.TMPDIR);
assertNotNull(ManagementUtil.COMPILER);
assertNotNull(ManagementUtil.EXT_DIRS);
assertNotNull(ManagementUtil.VM_NAME);
assertNotNull(ManagementUtil.VM_SPECIFICATION_NAME);
assertNotNull(ManagementUtil.VM_VERSION);
assertNotNull(ManagementUtil.VM_SPECIFICATION_VERSION);
assertNotNull(ManagementUtil.VM_VENDOR);
assertNotNull(ManagementUtil.VM_SPECIFICATION_VENDOR);
assertNotNull(ManagementUtil.CLASS_VERSION);
assertNotNull(ManagementUtil.CLASS_PATH);
assertNotNull(ManagementUtil.OS_NAME);
assertNotNull(ManagementUtil.OS_ARCH);
assertNotNull(ManagementUtil.OS_VERSION);
assertNotNull(ManagementUtil.FILE_SEPARATOR);
assertNotNull(ManagementUtil.PATH_SEPARATOR);
assertNotNull(ManagementUtil.LINE_SEPARATOR);
assertNotNull(ManagementUtil.USER_NAME);
assertNotNull(ManagementUtil.USER_HOME);
assertNotNull(ManagementUtil.USER_DIR);
}
// ----- 测试进程相关方法 -----
@Test
public void testGetCurrentPID() {
final long pid = ManagementUtil.getCurrentPID();
assertTrue(pid > 0);
assertTrue(pid < Long.MAX_VALUE);
}
// ----- 测试JMX Bean获取方法 -----
@Test
public void testGetClassLoadingMXBean() {
final ClassLoadingMXBean bean = ManagementUtil.getClassLoadingMXBean();
assertNotNull(bean);
assertTrue(bean.getTotalLoadedClassCount() >= 0);
assertTrue(bean.getLoadedClassCount() >= 0);
assertTrue(bean.getUnloadedClassCount() >= 0);
}
@Test
public void testGetMemoryMXBean() {
final MemoryMXBean bean = ManagementUtil.getMemoryMXBean();
assertNotNull(bean);
assertNotNull(bean.getHeapMemoryUsage());
assertNotNull(bean.getNonHeapMemoryUsage());
assertTrue(bean.getObjectPendingFinalizationCount() >= 0);
}
@Test
public void testGetThreadMXBean() {
final ThreadMXBean bean = ManagementUtil.getThreadMXBean();
assertNotNull(bean);
assertTrue(bean.getThreadCount() > 0);
assertTrue(bean.getPeakThreadCount() > 0);
assertTrue(bean.getTotalStartedThreadCount() > 0);
}
@Test
public void testGetRuntimeMXBean() {
final RuntimeMXBean bean = ManagementUtil.getRuntimeMXBean();
assertNotNull(bean);
assertNotNull(bean.getName());
assertNotNull(bean.getVmName());
assertNotNull(bean.getVmVendor());
assertNotNull(bean.getVmVersion());
assertTrue(bean.getStartTime() > 0);
assertTrue(bean.getUptime() >= 0);
}
@Test
public void testGetCompilationMXBean() {
final CompilationMXBean bean = ManagementUtil.getCompilationMXBean();
// CompilationMXBean 在某些JVM中可能为null
if (bean != null) {
assertNotNull(bean.getName());
assertTrue(bean.getTotalCompilationTime() >= 0);
}
}
@Test
public void testGetOperatingSystemMXBean() {
final OperatingSystemMXBean bean = ManagementUtil.getOperatingSystemMXBean();
assertNotNull(bean);
assertNotNull(bean.getName());
assertNotNull(bean.getArch());
assertNotNull(bean.getVersion());
assertTrue(bean.getAvailableProcessors() > 0);
assertTrue(bean.getSystemLoadAverage() >= -1);
}
@Test
public void testGetMemoryPoolMXBeans() {
final List<MemoryPoolMXBean> beans = ManagementUtil.getMemoryPoolMXBeans();
assertNotNull(beans);
assertFalse(beans.isEmpty());
for (final MemoryPoolMXBean bean : beans) {
assertNotNull(bean.getName());
assertNotNull(bean.getType());
assertNotNull(bean.getUsage());
assertNotNull(bean.getPeakUsage());
}
}
@Test
public void testGetMemoryManagerMXBeans() {
final List<MemoryManagerMXBean> beans = ManagementUtil.getMemoryManagerMXBeans();
assertNotNull(beans);
assertFalse(beans.isEmpty());
for (final MemoryManagerMXBean bean : beans) {
assertNotNull(bean.getName());
assertNotNull(bean.getMemoryPoolNames());
}
}
@Test
public void testGetGarbageCollectorMXBeans() {
final List<GarbageCollectorMXBean> beans = ManagementUtil.getGarbageCollectorMXBeans();
assertNotNull(beans);
assertFalse(beans.isEmpty());
for (final GarbageCollectorMXBean bean : beans) {
assertNotNull(bean.getName());
assertNotNull(bean.getMemoryPoolNames());
assertTrue(bean.getCollectionCount() >= 0);
assertTrue(bean.getCollectionTime() >= 0);
}
}
@Test
public void testGetMBeanServer() {
final MBeanServer server = ManagementUtil.getMBeanServer();
assertNotNull(server);
assertTrue(server.getMBeanCount() >= 0);
assertNotNull(server.getDefaultDomain());
}
@Test
public void testRegisterMBeanWithException() {
// 测试注册MBean时抛出异常的情况
assertThrows(ManagementException.class, () -> {
ManagementUtil.registerMBean(null, null);
});
}
// ----- 测试信息获取方法 -----
@Test
public void testGetJvmSpecInfo() {
final JvmSpecInfo info = ManagementUtil.getJvmSpecInfo();
assertNotNull(info);
// 这些值可能为null，取决于JVM实现
assertNotNull(info.getName());
assertNotNull(info.getVersion());
assertNotNull(info.getVendor());
}
@Test
public void testGetJvmInfo() {
final JvmInfo info = ManagementUtil.getJvmInfo();
assertNotNull(info);
assertNotNull(info.getName());
assertNotNull(info.getVersion());
assertNotNull(info.getVendor());
assertNotNull(info.getInfo());
}
@Test
public void testGetJavaSpecInfo() {
final JavaSpecInfo info = ManagementUtil.getJavaSpecInfo();
assertNotNull(info);
assertNotNull(info.getName());
assertNotNull(info.getVersion());
assertNotNull(info.getVendor());
}
@Test
public void testGetJavaInfo() {
final JavaInfo info = ManagementUtil.getJavaInfo();
assertNotNull(info);
assertNotNull(info.getVersion());
assertNotNull(info.getVendor());
assertNotNull(info.getVendorURL());
assertTrue(info.getVersionFloat() >= 0);
assertTrue(info.getVersionInt() >= 0);
assertTrue(info.getVersionIntSimple() >= 0);
}
@Test
public void testGetJavaRuntimeInfo() {
final JavaRuntimeInfo info = ManagementUtil.getJavaRuntimeInfo();
assertNotNull(info);
assertNotNull(info.getName());
assertNotNull(info.getVersion());
assertNotNull(info.getHomeDir());
assertNotNull(info.getClassPath());
assertNotNull(info.getClassVersion());
assertNotNull(info.getLibraryPath());
// 测试数组方法
assertNotNull(info.getClassPathArray());
assertNotNull(info.getLibraryPathArray());
}
@SuppressWarnings("ResultOfMethodCallIgnored")
@Test
public void testGetOsInfo() {
final OsInfo info = ManagementUtil.getOsInfo();
assertNotNull(info);
assertNotNull(info.getArch());
assertNotNull(info.getName());
assertNotNull(info.getVersion());
assertNotNull(info.getFileSeparator());
assertNotNull(info.getLineSeparator());
assertNotNull(info.getPathSeparator());
// 测试OS类型判断方法
// 这些方法返回布尔值，只需要检查没有异常
assertDoesNotThrow(() -> {
info.isAix();
info.isHpUx();
info.isIrix();
info.isLinux();
info.isMac();
info.isMacOsX();
info.isOs2();
info.isSolaris();
info.isSunOS();
info.isWindows();
info.isWindows2000();
info.isWindows95();
info.isWindows98();
info.isWindowsME();
info.isWindowsNT();
info.isWindowsXP();
info.isWindows7();
info.isWindows8();
info.isWindows8_1();
info.isWindows10();
info.isWindows11();
});
}
@Test
public void testGetUserInfo() {
final UserInfo info = ManagementUtil.getUserInfo();
assertNotNull(info);
assertNotNull(info.getName());
assertNotNull(info.getHomeDir());
assertNotNull(info.getCurrentDir());
assertNotNull(info.getTempDir());
assertNotNull(info.getLanguage());
assertNotNull(info.getCountry());
// 验证临时目录以分隔符结尾
assertTrue(info.getTempDir().endsWith(File.separator));
}
@Test
public void testGetHostInfo() {
final HostInfo info = ManagementUtil.getHostInfo();
assertNotNull(info);
// 主机名和地址可能为null
assertNotNull(info.getName());
assertNotNull(info.getAddress());
}
@Test
public void testGetRuntimeInfo() {
final RuntimeInfo info = ManagementUtil.getRuntimeInfo();
assertNotNull(info);
assertNotNull(info.getRuntime());
assertTrue(info.getMaxMemory() > 0);
assertTrue(info.getTotalMemory() > 0);
assertTrue(info.getFreeMemory() >= 0);
assertTrue(info.getUsableMemory() >= 0);
}
// ----- 测试内存相关方法 -----
@Test
public void testGetTotalMemory() {
final long totalMemory = ManagementUtil.getTotalMemory();
assertTrue(totalMemory > 0);
assertTrue(totalMemory < Runtime.getRuntime().maxMemory());
}
@Test
public void testGetFreeMemory() {
final long freeMemory = ManagementUtil.getFreeMemory();
assertTrue(freeMemory >= 0);
assertTrue(freeMemory <= ManagementUtil.getTotalMemory());
}
@Test
public void testGetMaxMemory() {
final long maxMemory = ManagementUtil.getMaxMemory();
assertTrue(maxMemory > 0);
assertTrue(maxMemory >= ManagementUtil.getTotalMemory());
}
// ----- 测试线程相关方法 -----
@SuppressWarnings("ConstantValue")
@Test
public void testGetTotalThreadCount() {
final int threadCount = ManagementUtil.getTotalThreadCount();
assertTrue(threadCount > 0);
// 当前JVM应该至少有main线程和一些系统线程
assertTrue(threadCount >= 1);
}
// ----- 测试dump方法 -----
@Test
@Disabled("避免在测试中输出到控制台")
public void testDumpSystemInfo() {
ManagementUtil.dumpSystemInfo();
}
@Test
public void getCurrentPidTest() {
public void testDumpSystemInfoToWriter() {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final PrintWriter writer = new PrintWriter(baos);
ManagementUtil.dumpSystemInfo(writer);
writer.flush();
final String output = baos.toString();
assertFalse(output.isEmpty());
assertTrue(output.contains("Java Runtime Name"));
}
// ----- 边界值测试 -----
@Test
public void testMemoryBoundaryValues() {
// 测试内存值边界
final long total = ManagementUtil.getTotalMemory();
final long free = ManagementUtil.getFreeMemory();
final long max = ManagementUtil.getMaxMemory();
// 验证内存关系
assertTrue(free <= total);
assertTrue(total <= max);
assertTrue(max > 0);
}
@Test
public void testThreadCountBoundary() {
final int threadCount = ManagementUtil.getTotalThreadCount();
assertTrue(threadCount > 0);
// 最大线程数应该有合理的上限（比如小于10000）
assertTrue(threadCount < 10000);
}
@Test
public void testPIDBoundary() {
final long pid = ManagementUtil.getCurrentPID();
Assertions.assertTrue(pid > 0);
}
@Test
public void getJavaInfoTest() {
final JavaInfo javaInfo = ManagementUtil.getJavaInfo();
Assertions.assertNotNull(javaInfo);
}
@Test
public void getJavaRuntimeInfoTest() {
final JavaRuntimeInfo info = ManagementUtil.getJavaRuntimeInfo();
Assertions.assertNotNull(info);
}
@Test
public void getOsInfoTest() {
final OsInfo osInfo = ManagementUtil.getOsInfo();
Assertions.assertNotNull(osInfo);
}
@Test
public void getHostInfo() {
final HostInfo hostInfo = ManagementUtil.getHostInfo();
Assertions.assertNotNull(hostInfo);
}
@Test
public void getUserInfoTest(){
// https://gitee.com/chinabugotech/hutool/issues/I3NM39
final UserInfo userInfo = ManagementUtil.getUserInfo();
Assertions.assertTrue(userInfo.getTempDir().endsWith(File.separator));
}
@Test
public void getOsVersionTest(){
String s = SystemUtil.get("os.name");
Assertions.assertNotNull(s);
s = SystemUtil.get("os.version");
Assertions.assertNotNull(s);
assertTrue(pid > 0);
// PID应该有上限（操作系统限制）
assertTrue(pid < 1000000);
}
}