HADOOP-19418. [JDK17] Upgrade JUnit from 4 to 5 in hadoop-nfs.

hadoop-hdfs-project/hadoop-hdfs-nfs/pom.xml

@@ -173,6 +173,36 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <artifactId>bcprov-jdk18on</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.assertj</groupId>
+      <artifactId>assertj-core</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-params</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.vintage</groupId>
+      <artifactId>junit-vintage-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.platform</groupId>
+      <artifactId>junit-platform-launcher</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <profiles>

hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/TestMountd.java

@@ -30,8 +30,8 @@
 import org.apache.hadoop.hdfs.nfs.nfs3.Nfs3;
 import org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3;
 import org.apache.hadoop.oncrpc.XDR;
-import org.junit.Test;
-import static org.junit.Assert.assertTrue;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class TestMountd {
 

hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestClientAccessPrivilege.java

@@ -17,7 +17,7 @@
  */
 package org.apache.hadoop.hdfs.nfs.nfs3;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
@@ -36,11 +36,13 @@
 import org.apache.hadoop.oncrpc.security.SecurityHandler;
 import org.apache.hadoop.security.authorize.DefaultImpersonationProvider;
 import org.apache.hadoop.security.authorize.ProxyUsers;
-import org.junit.AfterClass;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.mockito.Mockito;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 
 public class TestClientAccessPrivilege {
   static MiniDFSCluster cluster = null;
@@ -50,7 +52,7 @@ public class TestClientAccessPrivilege {
   static String testdir = "/tmp";
   static SecurityHandler securityHandler;
 
-  @BeforeClass
+  @BeforeAll
   public static void setup() throws Exception {
 
     String currentUser = System.getProperty("user.name");
@@ -68,26 +70,27 @@ public static void setup() throws Exception {
     config.setInt("nfs3.mountd.port", 0);
     config.setInt("nfs3.server.port", 0);
 
-    securityHandler = Mockito.mock(SecurityHandler.class);
-    Mockito.when(securityHandler.getUser()).thenReturn(
+    securityHandler = mock(SecurityHandler.class);
+    when(securityHandler.getUser()).thenReturn(
         System.getProperty("user.name"));
   }
 
-  @AfterClass
+  @AfterAll
   public static void shutdown() throws Exception {
     if (cluster != null) {
       cluster.shutdown();
     }
   }
 
-  @Before
+  @BeforeEach
   public void createFiles() throws IllegalArgumentException, IOException {
     hdfs.delete(new Path(testdir), true);
     hdfs.mkdirs(new Path(testdir));
     DFSTestUtil.createFile(hdfs, new Path(testdir + "/f1"), 0, (short) 1, 0);
   }
 
-  @Test(timeout = 60000)
+  @Test
+  @Timeout(value = 60)
   public void testClientAccessPrivilegeForRemove() throws Exception {
     // Configure ro access for nfs1 service
     config.set("dfs.nfs.exports.allowed.hosts", "* ro");
@@ -113,9 +116,8 @@ public void testClientAccessPrivilegeForRemove() throws Exception {
         securityHandler, new InetSocketAddress("localhost", 1234));
 
     // Assert on return code
-    assertEquals("Incorrect return code", Nfs3Status.NFS3ERR_ACCES,
-        response.getStatus());
-
+    assertEquals(Nfs3Status.NFS3ERR_ACCES,
+        response.getStatus(), "Incorrect return code");
   }
 
 }

hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestDFSClientCache.java

@@ -18,23 +18,22 @@
 package org.apache.hadoop.hdfs.nfs.nfs3;
 
 import static org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod.KERBEROS;
-import static org.hamcrest.core.Is.is;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import java.io.IOException;
 
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.hdfs.DFSClient;
 import org.apache.hadoop.hdfs.nfs.conf.NfsConfiguration;
 import org.apache.hadoop.security.UserGroupInformation;
-import org.junit.After;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
 
 public class TestDFSClientCache {
-  @After
+  @AfterEach
   public void cleanup() {
     UserGroupInformation.reset();
   }
@@ -58,8 +57,8 @@ public void testEviction() throws IOException {
 
     cache.getDfsClient("test2", namenodeId);
     assertTrue(isDfsClientClose(c1));
-    assertTrue("cache size should be the max size or less",
-        cache.getClientCache().size() <= MAX_CACHE_SIZE);
+    assertTrue(cache.getClientCache().size() <= MAX_CACHE_SIZE,
+        "cache size should be the max size or less");
   }
 
   @Test
@@ -79,11 +78,10 @@ public void testGetUserGroupInformationSecure() throws IOException {
     UserGroupInformation ugiResult
             = cache.getUserGroupInformation(userName, currentUserUgi);
 
-    assertThat(ugiResult.getUserName(), is(userName));
-    assertThat(ugiResult.getRealUser(), is(currentUserUgi));
-    assertThat(
-            ugiResult.getAuthenticationMethod(),
-            is(UserGroupInformation.AuthenticationMethod.PROXY));
+    assertThat(ugiResult.getUserName()).isEqualTo(userName);
+    assertThat(ugiResult.getRealUser()).isEqualTo(currentUserUgi);
+    assertThat(ugiResult.getAuthenticationMethod()).isEqualTo(
+        UserGroupInformation.AuthenticationMethod.PROXY);
   }
 
   @Test
@@ -99,11 +97,10 @@ public void testGetUserGroupInformation() throws IOException {
     UserGroupInformation ugiResult
             = cache.getUserGroupInformation(userName, currentUserUgi);
 
-    assertThat(ugiResult.getUserName(), is(userName));
-    assertThat(ugiResult.getRealUser(), is(currentUserUgi));
-    assertThat(
-            ugiResult.getAuthenticationMethod(),
-            is(UserGroupInformation.AuthenticationMethod.PROXY));
+    assertThat(ugiResult.getUserName()).isEqualTo(userName);
+    assertThat(ugiResult.getRealUser()).isEqualTo(currentUserUgi);
+    assertThat(ugiResult.getAuthenticationMethod()).isEqualTo(
+        UserGroupInformation.AuthenticationMethod.PROXY);
   }
 
   private static boolean isDfsClientClose(DFSClient c) {

hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestExportsTable.java

@@ -17,8 +17,6 @@
  */
 package org.apache.hadoop.hdfs.nfs.nfs3;
 
-import static org.junit.Assert.assertTrue;
-
 import java.io.IOException;
 import java.nio.file.FileSystemException;
 
@@ -34,15 +32,13 @@
 import org.apache.hadoop.hdfs.nfs.conf.NfsConfiguration;
 import org.apache.hadoop.hdfs.nfs.mount.Mountd;
 import org.apache.hadoop.hdfs.nfs.mount.RpcProgramMountd;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.ExpectedException;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class TestExportsTable {
 
-  @Rule
-  public ExpectedException exception = ExpectedException.none();
-
   @Test
   public void testHdfsExportPoint() throws IOException {
     NfsConfiguration config = new NfsConfiguration();
@@ -224,13 +220,13 @@ public void testViewFsRootExportPoint() throws IOException {
       ConfigUtil.addLink(config, clusterName, "/hdfs2",
           hdfs2.makeQualified(base2).toUri());
 
-      exception.expect(FileSystemException.class);
-      exception.
-          expectMessage("Only HDFS is supported as underlyingFileSystem, "
-              + "fs scheme:viewfs");
-      // Start nfs
-      final Nfs3 nfsServer = new Nfs3(config);
-      nfsServer.startServiceInternal(false);
+      FileSystemException fileSystemException = assertThrows(FileSystemException.class, () -> {
+        // Start nfs
+        final Nfs3 nfsServer = new Nfs3(config);
+        nfsServer.startServiceInternal(false);
+      });
+      assertTrue(fileSystemException.getMessage().
+          contains("Only HDFS is supported as underlyingFileSystem, fs scheme:viewfs"));
     } finally {
       if (cluster != null) {
         cluster.shutdown();
@@ -292,13 +288,14 @@ public void testInvalidFsExport() throws IOException {
       config.set(CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY,
           FsConstants.LOCAL_FS_URI.toString());
 
-      exception.expect(FileSystemException.class);
-      exception.
-          expectMessage("Only HDFS is supported as underlyingFileSystem, "
-              + "fs scheme:file");
-      // Start nfs
-      final Nfs3 nfsServer = new Nfs3(config);
-      nfsServer.startServiceInternal(false);
+      FileSystemException fileSystemException =
+          assertThrows(FileSystemException.class, () -> {
+            // Start nfs
+            final Nfs3 nfsServer = new Nfs3(config);
+            nfsServer.startServiceInternal(false);
+          });
+      assertTrue(fileSystemException.getMessage().
+          contains("Only HDFS is supported as underlyingFileSystem, fs scheme:file"));
     } finally {
       if (cluster != null) {
         cluster.shutdown();

hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestNfs3HttpServer.java

@@ -17,7 +17,7 @@
  */
 package org.apache.hadoop.hdfs.nfs.nfs3;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.File;
 import java.net.URL;
@@ -31,9 +31,9 @@
 import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
 import org.apache.hadoop.test.GenericTestUtils;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 public class TestNfs3HttpServer {
   private static final String BASEDIR =
@@ -43,7 +43,7 @@ public class TestNfs3HttpServer {
   private static String keystoresDir;
   private static String sslConfDir;
 
-  @BeforeClass
+  @BeforeAll
   public static void setUp() throws Exception {
     conf.set(DFSConfigKeys.DFS_HTTP_POLICY_KEY,
         HttpConfig.Policy.HTTP_AND_HTTPS.name());
@@ -64,7 +64,7 @@ public static void setUp() throws Exception {
     cluster.waitActive();
   }
 
-  @AfterClass
+  @AfterAll
   public static void tearDown() throws Exception {
     FileUtil.fullyDelete(new File(BASEDIR));
     if (cluster != null) {
@@ -84,11 +84,11 @@ public void testHttpServer() throws Exception {
 
     // Check default servlets.
     String pageContents = DFSTestUtil.urlGet(new URL(urlRoot + "/jmx"));
-    assertTrue("Bad contents: " + pageContents,
-        pageContents.contains("java.lang:type="));
+    assertTrue(pageContents.contains("java.lang:type="),
+        "Bad contents: " + pageContents);
     System.out.println("pc:" + pageContents);
 
     int port = infoServer.getSecurePort();
-    assertTrue("Can't get https port", port > 0);
+    assertTrue(port > 0, "Can't get https port");
   }
 }