Migrate Spring Batch Core to JUnit Jupiter

Author: hpoettker

spring-batch-core/pom.xml

@@ -87,6 +87,12 @@
 		</dependency>
 
 		<!-- test dependencies -->
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>junit-jupiter</artifactId>
+			<version>${testcontainers.version}</version>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.hsqldb</groupId>
 			<artifactId>hsqldb</artifactId>
@@ -196,21 +202,9 @@
 			<scope>test</scope>
 		</dependency>
 		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>${junit.version}</version>
-			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>org.hamcrest</groupId>
-					<artifactId>hamcrest-core</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
-		<dependency>
-			<groupId>org.junit.vintage</groupId>
-			<artifactId>junit-vintage-engine</artifactId>
-			<version>${junit-vintage-engine.version}</version>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-engine</artifactId>
+			<version>${junit-jupiter.version}</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -233,7 +227,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.mockito</groupId>
-			<artifactId>mockito-core</artifactId>
+			<artifactId>mockito-junit-jupiter</artifactId>
 			<version>${mockito.version}</version>
 			<scope>test</scope>
 		</dependency>

spring-batch-core/src/test/java/org/springframework/batch/core/AbstractExceptionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,14 +16,14 @@
 
 package org.springframework.batch.core;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public abstract class AbstractExceptionTests extends AbstractExceptionWithCauseTests {
 
 	@Test
-	public void testExceptionString() throws Exception {
+	void testExceptionString() throws Exception {
 		Exception exception = getException("foo");
 		assertEquals("foo", exception.getMessage());
 	}

spring-batch-core/src/test/java/org/springframework/batch/core/AbstractExceptionWithCauseTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,14 +16,14 @@
 
 package org.springframework.batch.core;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public abstract class AbstractExceptionWithCauseTests {
 
 	@Test
-	public void testExceptionStringThrowable() throws Exception {
+	void testExceptionStringThrowable() throws Exception {
 		Exception exception = getException("foo", new IllegalStateException());
 		assertEquals("foo", exception.getMessage().substring(0, 3));
 	}

spring-batch-core/src/test/java/org/springframework/batch/core/BatchStatusTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2021 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,36 +15,35 @@
  */
 package org.springframework.batch.core;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 /**
  * @author Dave Syer
  * @author Mahmoud Ben Hassine
  *
  */
-public class BatchStatusTests {
+class BatchStatusTests {
 
 	/**
 	 * Test method for {@link org.springframework.batch.core.BatchStatus#toString()}.
 	 */
 	@Test
-	public void testToString() {
+	void testToString() {
 		assertEquals("ABANDONED", BatchStatus.ABANDONED.toString());
 	}
 
 	@Test
-	public void testMaxStatus() {
+	void testMaxStatus() {
 		assertEquals(BatchStatus.FAILED, BatchStatus.max(BatchStatus.FAILED, BatchStatus.COMPLETED));
 		assertEquals(BatchStatus.FAILED, BatchStatus.max(BatchStatus.COMPLETED, BatchStatus.FAILED));
 		assertEquals(BatchStatus.FAILED, BatchStatus.max(BatchStatus.FAILED, BatchStatus.FAILED));
@@ -53,58 +52,52 @@ public void testMaxStatus() {
 	}
 
 	@Test
-	public void testUpgradeStatusFinished() {
+	void testUpgradeStatusFinished() {
 		assertEquals(BatchStatus.FAILED, BatchStatus.FAILED.upgradeTo(BatchStatus.COMPLETED));
 		assertEquals(BatchStatus.FAILED, BatchStatus.COMPLETED.upgradeTo(BatchStatus.FAILED));
 	}
 
 	@Test
-	public void testUpgradeStatusUnfinished() {
+	void testUpgradeStatusUnfinished() {
 		assertEquals(BatchStatus.COMPLETED, BatchStatus.STARTING.upgradeTo(BatchStatus.COMPLETED));
 		assertEquals(BatchStatus.COMPLETED, BatchStatus.COMPLETED.upgradeTo(BatchStatus.STARTING));
 		assertEquals(BatchStatus.STARTED, BatchStatus.STARTING.upgradeTo(BatchStatus.STARTED));
 		assertEquals(BatchStatus.STARTED, BatchStatus.STARTED.upgradeTo(BatchStatus.STARTING));
 	}
 
 	@Test
-	public void testIsRunning() {
+	void testIsRunning() {
 		assertFalse(BatchStatus.FAILED.isRunning());
 		assertFalse(BatchStatus.COMPLETED.isRunning());
 		assertTrue(BatchStatus.STARTED.isRunning());
 		assertTrue(BatchStatus.STARTING.isRunning());
 	}
 
 	@Test
-	public void testIsUnsuccessful() {
+	void testIsUnsuccessful() {
 		assertTrue(BatchStatus.FAILED.isUnsuccessful());
 		assertFalse(BatchStatus.COMPLETED.isUnsuccessful());
 		assertFalse(BatchStatus.STARTED.isUnsuccessful());
 		assertFalse(BatchStatus.STARTING.isUnsuccessful());
 	}
 
 	@Test
-	public void testGetStatus() {
+	void testGetStatus() {
 		assertEquals(BatchStatus.FAILED, BatchStatus.valueOf(BatchStatus.FAILED.toString()));
 	}
 
 	@Test
-	public void testGetStatusWrongCode() {
-		try {
-			BatchStatus.valueOf("foo");
-			fail();
-		}
-		catch (IllegalArgumentException ex) {
-			// expected
-		}
+	void testGetStatusWrongCode() {
+		assertThrows(IllegalArgumentException.class, () -> BatchStatus.valueOf("foo"));
 	}
 
-	@Test(expected = NullPointerException.class)
-	public void testGetStatusNullCode() {
-		assertNull(BatchStatus.valueOf(null));
+	@Test
+	void testGetStatusNullCode() {
+		assertThrows(NullPointerException.class, () -> BatchStatus.valueOf(null));
 	}
 
 	@Test
-	public void testSerialization() throws Exception {
+	void testSerialization() throws Exception {
 
 		ByteArrayOutputStream bout = new ByteArrayOutputStream();
 		ObjectOutputStream out = new ObjectOutputStream(bout);

spring-batch-core/src/test/java/org/springframework/batch/core/DefaultJobKeyGeneratorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2021 the original author or authors.
+ * Copyright 2013-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,27 +15,22 @@
  */
 package org.springframework.batch.core;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class DefaultJobKeyGeneratorTests {
+class DefaultJobKeyGeneratorTests {
 
-	private JobKeyGenerator<JobParameters> jobKeyGenerator;
+	private final JobKeyGenerator<JobParameters> jobKeyGenerator = new DefaultJobKeyGenerator();
 
-	@Before
-	public void setUp() throws Exception {
-		jobKeyGenerator = new DefaultJobKeyGenerator();
-	}
-
-	@Test(expected = IllegalArgumentException.class)
-	public void testNullParameters() {
-		jobKeyGenerator.generateKey(null);
+	@Test
+	void testNullParameters() {
+		assertThrows(IllegalArgumentException.class, () -> jobKeyGenerator.generateKey(null));
 	}
 
 	@Test
-	public void testMixedParameters() {
+	void testMixedParameters() {
 		JobParameters jobParameters1 = new JobParametersBuilder().addString("foo", "bar").addString("bar", "foo")
 				.toJobParameters();
 		JobParameters jobParameters2 = new JobParametersBuilder().addString("foo", "bar", true)
@@ -46,15 +41,15 @@ public void testMixedParameters() {
 	}
 
 	@Test
-	public void testCreateJobKey() {
+	void testCreateJobKey() {
 		JobParameters jobParameters = new JobParametersBuilder().addString("foo", "bar").addString("bar", "foo")
 				.toJobParameters();
 		String key = jobKeyGenerator.generateKey(jobParameters);
 		assertEquals(32, key.length());
 	}
 
 	@Test
-	public void testCreateJobKeyOrdering() {
+	void testCreateJobKeyOrdering() {
 		JobParameters jobParameters1 = new JobParametersBuilder().addString("foo", "bar").addString("bar", "foo")
 				.toJobParameters();
 		String key1 = jobKeyGenerator.generateKey(jobParameters1);