Implement default methods in SimpleJobRepository

Resolves #4229

spring-batch-test/src/test/java/org/springframework/batch/test/JobRepositoryTestUtilsTests.java

@@ -15,9 +15,6 @@
  */
 package org.springframework.batch.test;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
@@ -26,6 +23,7 @@ import javax.sql.DataSource;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+
 import org.springframework.batch.core.JobExecution;
 import org.springframework.batch.core.JobParameters;
 import org.springframework.batch.core.JobParametersBuilder;
@@ -37,6 +35,8 @@ import org.springframework.lang.Nullable;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 import org.springframework.test.jdbc.JdbcTestUtils;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 /**
  * @author Dave Syer
  * @author Mahmoud Ben Hassine
@@ -133,4 +133,18 @@ class JobRepositoryTestUtilsTests {
 		assertEquals(beforeJobs, JdbcTestUtils.countRowsInTable(jdbcTemplate, "BATCH_JOB_EXECUTION"));
 	}
 
+	@Test
+	void testRemoveJobExecutions() throws Exception {
+		// given
+		utils = new JobRepositoryTestUtils(jobRepository);
+		utils.createJobExecutions("foo", new String[] {}, 2);
+		assertEquals(2, JdbcTestUtils.countRowsInTable(jdbcTemplate, "BATCH_JOB_EXECUTION"));
+
+		// when
+		utils.removeJobExecutions();
+
+		// then
+		assertEquals(0, JdbcTestUtils.countRowsInTable(jdbcTemplate, "BATCH_JOB_EXECUTION"));
+	}
+
 }

spring-batch-test/src/test/java/org/springframework/batch/test/SpringBatchTestJUnit4Tests.java

@@ -16,10 +16,10 @@
 package org.springframework.batch.test;
 
 import java.util.Arrays;
+
 import javax.sql.DataSource;
 
 import org.junit.Assert;
-import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -69,11 +69,6 @@ public class SpringBatchTestJUnit4Tests {
 	@Autowired
 	private ItemReader<String> jobScopedItemReader;
 
-	@Before
-	public void setUp() {
-		this.jobRepositoryTestUtils.removeJobExecutions();
-	}
-
 	public StepExecution getStepExecution() {
 		StepExecution execution = MetaDataInstanceFactory.createStepExecution();
 		execution.getExecutionContext().putString("input.data", "foo,bar");
@@ -103,6 +98,7 @@ public class SpringBatchTestJUnit4Tests {
 	@Test
 	public void testJob() throws Exception {
 		// when
+		this.jobRepositoryTestUtils.removeJobExecutions();
 		JobExecution jobExecution = this.jobLauncherTestUtils.launchJob();
 
 		// then

spring-batch-test/src/test/java/org/springframework/batch/test/SpringBatchTestJUnit5Tests.java

@@ -19,7 +19,6 @@ import java.util.Arrays;
 
 import javax.sql.DataSource;
 
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.batch.core.ExitStatus;
@@ -70,11 +69,6 @@ public class SpringBatchTestJUnit5Tests {
 	@Autowired
 	private ItemReader<String> jobScopedItemReader;
 
-	@BeforeEach
-	void setup() {
-		this.jobRepositoryTestUtils.removeJobExecutions();
-	}
-
 	@Test
 	void testStepScopedItemReader() throws Exception {
 		assertEquals("foo", this.stepScopedItemReader.read());
@@ -92,6 +86,7 @@ public class SpringBatchTestJUnit5Tests {
 	@Test
 	void testJob() throws Exception {
 		// given
+		this.jobRepositoryTestUtils.removeJobExecutions();
 		JobParameters jobParameters = this.jobLauncherTestUtils.getUniqueJobParameters();
 
 		// when