HADOOP-19425. [JDK17] Upgrade JUnit from 4 to 5 in hadoop-azure Part1.

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/TestName.java

@@ -0,0 +1,39 @@
+/*
+ * 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.hadoop.test;
+
+import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+/**
+ * This is a custom JUnit5 `RegisterExtension`
+ * we created to obtain the methond name of the executing function.
+ */
+public class TestName implements BeforeEachCallback {
+
+  private volatile String name;
+
+  @Override
+  public void beforeEach(ExtensionContext extensionContext) throws Exception {
+    name = extensionContext.getTestMethod().get().getName();
+  }
+
+  public String getMethodName() {
+    return this.name;
+  }
+}

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/AbstractWasbTestBase.java

@@ -21,16 +21,15 @@
 import java.io.IOException;
 
 import org.apache.hadoop.conf.Configuration;
-import org.junit.After;
-import org.junit.Before;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.azure.integration.AzureTestConstants;
 import org.apache.hadoop.io.IOUtils;
 
-import static org.junit.Assume.assumeNotNull;
 import static org.apache.hadoop.fs.azure.integration.AzureTestUtils.*;
 
 /**
@@ -49,14 +48,14 @@ public abstract class AbstractWasbTestBase extends AbstractWasbTestWithTimeout
   protected NativeAzureFileSystem fs;
   protected AzureBlobStorageTestAccount testAccount;
 
-  @Before
+  @BeforeEach
   public void setUp() throws Exception {
     AzureBlobStorageTestAccount account = createTestAccount();
-    assumeNotNull("test account", account);
+    assumeNotNull(account, "test account");
     bindToTestAccount(account);
   }
 
-  @After
+  @AfterEach
   public void tearDown() throws Exception {
     describe("closing test account and filesystem");
     testAccount = cleanupTestAccount(testAccount);

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/AbstractWasbTestWithTimeout.java

@@ -18,46 +18,42 @@
 
 package org.apache.hadoop.fs.azure;
 
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Rule;
-import org.junit.rules.TestName;
-import org.junit.rules.Timeout;
-
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Timeout;
 import org.apache.hadoop.fs.azure.integration.AzureTestConstants;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import org.apache.hadoop.test.TestName;
+
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
 
 /**
  * Base class for any Wasb test with timeouts & named threads.
  * This class does not attempt to bind to Azure.
  */
-public class AbstractWasbTestWithTimeout extends Assert {
+@Timeout(AzureTestConstants.AZURE_TEST_TIMEOUT)
+public class AbstractWasbTestWithTimeout extends Assertions {
 
   /**
    * The name of the current method.
    */
-  @Rule
+  @RegisterExtension
   public TestName methodName = new TestName();
-  /**
-   * Set the timeout for every test.
-   * This is driven by the value returned by {@link #getTestTimeoutMillis()}.
-   */
-  @Rule
-  public Timeout testTimeout = new Timeout(getTestTimeoutMillis());
 
   /**
    * Name the junit thread for the class. This will overridden
    * before the individual test methods are run.
    */
-  @BeforeClass
+  @BeforeAll
   public static void nameTestThread() {
     Thread.currentThread().setName("JUnit");
   }
 
   /**
    * Name the thread to the current test method.
    */
-  @Before
+  @BeforeEach
   public void nameThread() {
     Thread.currentThread().setName("JUnit-" + methodName.getMethodName());
   }
@@ -70,4 +66,11 @@ protected int getTestTimeoutMillis() {
     return AzureTestConstants.AZURE_TEST_TIMEOUT;
   }
 
+  public static void assumeNotNull(Object objects) {
+    assumeTrue(objects != null);
+  }
+
+  public static void assumeNotNull(Object objects, String message) {
+    assumeTrue(objects != null, message);
+  }
 }

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/AzureBlobStorageTestAccount.java

@@ -21,7 +21,6 @@
 import com.microsoft.azure.storage.*;
 import com.microsoft.azure.storage.blob.*;
 import com.microsoft.azure.storage.core.Base64;
-import org.junit.Assert;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -50,6 +49,7 @@
 import static org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.KEY_USE_LOCAL_SAS_KEY_MODE;
 import static org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.KEY_USE_SECURE_MODE;
 import static org.apache.hadoop.fs.azure.integration.AzureTestUtils.verifyWasbAccountNameInConfig;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
  * Helper class to create WASB file systems backed by either a mock in-memory
@@ -212,9 +212,9 @@ public Number getLatestMetricValue(String metricName, Number defaultValue)
    * @return
    */
   private boolean wasGeneratedByMe(MetricsRecord currentRecord) {
-    Assert.assertNotNull("null filesystem", fs);
-    Assert.assertNotNull("null filesystemn instance ID",
-        fs.getInstrumentation().getFileSystemInstanceId());
+    assertNotNull(fs, "null filesystem");
+    assertNotNull(fs.getInstrumentation().getFileSystemInstanceId(),
+        "null filesystemn instance ID");
     String myFsId = fs.getInstrumentation().getFileSystemInstanceId().toString();
     for (MetricsTag currentTag : currentRecord.tags()) {
       if (currentTag.name().equalsIgnoreCase("wasbFileSystemId")) {

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/ITestAzureConcurrentOutOfBandIo.java

@@ -23,7 +23,7 @@
 import java.io.OutputStream;
 import java.util.Arrays;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/ITestAzureFileSystemErrorConditions.java

@@ -30,7 +30,7 @@
 import com.microsoft.azure.storage.OperationContext;
 import com.microsoft.azure.storage.SendingRequestEvent;
 import com.microsoft.azure.storage.StorageEvent;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
@@ -41,7 +41,6 @@
 
 import static org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.NO_ACCESS_TO_CONTAINER_MSG;
 import static org.apache.hadoop.test.LambdaTestUtils.intercept;
-import static org.junit.Assume.assumeNotNull;
 
 /**
  * Error handling.
@@ -76,7 +75,7 @@ public void testAccessUnauthorizedPublicContainer() throws Exception {
     try {
       FileSystem.get(noAccessPath.toUri(), new Configuration())
         .open(noAccessPath);
-      assertTrue("Should've thrown.", false);
+      assertTrue(false, "Should've thrown.");
     } catch (AzureException ex) {
       GenericTestUtils.assertExceptionContains(
           String.format(NO_ACCESS_TO_CONTAINER_MSG, account, container), ex);

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/ITestBlobDataValidation.java

@@ -20,7 +20,6 @@
 
 import static org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.KEY_CHECK_BLOCK_MD5;
 import static org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.KEY_STORE_BLOB_MD5;
-import static org.junit.Assume.assumeNotNull;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
@@ -35,8 +34,8 @@
 import org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.TestHookOperationContext;
 import org.apache.hadoop.fs.azure.integration.AzureTestUtils;
 
-import org.junit.After;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
 
 import com.microsoft.azure.storage.Constants;
 import com.microsoft.azure.storage.OperationContext;
@@ -56,7 +55,7 @@
 public class ITestBlobDataValidation extends AbstractWasbTestWithTimeout {
   private AzureBlobStorageTestAccount testAccount;
 
-  @After
+  @AfterEach
   public void tearDown() throws Exception {
     testAccount = AzureTestUtils.cleanupTestAccount(testAccount);
   }
@@ -95,8 +94,7 @@ private void testStoreBlobMd5(boolean expectMd5Stored) throws Exception {
     assumeNotNull(testAccount);
     // Write a test file.
     NativeAzureFileSystem fs = testAccount.getFileSystem();
-    Path testFilePath = AzureTestUtils.pathForTests(fs,
-        methodName.getMethodName());
+    Path testFilePath = AzureTestUtils.pathForTests(fs, methodName.getMethodName());
     String testFileKey = trim(testFilePath.toUri().getPath(), "/");
     OutputStream outStream = fs.create(testFilePath);
     outStream.write(new byte[] { 5, 15 });
@@ -109,7 +107,7 @@ private void testStoreBlobMd5(boolean expectMd5Stored) throws Exception {
     if (expectMd5Stored) {
       assertNotNull(obtainedMd5);
     } else {
-      assertNull("Expected no MD5, found: " + obtainedMd5, obtainedMd5);
+      assertNull(obtainedMd5, "Expected no MD5, found: " + obtainedMd5);
     }
 
     // Mess with the content so it doesn't match the MD5.
@@ -137,8 +135,8 @@ private void testStoreBlobMd5(boolean expectMd5Stored) throws Exception {
       }
       StorageException cause = (StorageException)ex.getCause();
       assertNotNull(cause);
-      assertEquals("Unexpected cause: " + cause,
-          StorageErrorCodeStrings.INVALID_MD5, cause.getErrorCode());
+      assertEquals(StorageErrorCodeStrings.INVALID_MD5, cause.getErrorCode(),
+          "Unexpected cause: " + cause);
     }
   }
 
@@ -192,7 +190,7 @@ private void checkObtainedMd5(String obtainedMd5) {
       if (expectMd5) {
         assertNotNull(obtainedMd5);
       } else {
-        assertNull("Expected no MD5, found: " + obtainedMd5, obtainedMd5);
+        assertNull(obtainedMd5, "Expected no MD5, found: " + obtainedMd5);
       }
     }
 

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/ITestBlobTypeSpeedDifference.java

@@ -23,7 +23,7 @@
 import java.util.Arrays;
 import java.util.Date;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;