BATCH-2048: Simplified the use fo a MapJobRepository by making the DataSource optional

spring-batch-core/src/test/java/org/springframework/batch/core/configuration/annotation/MapJobRepositoryConfigurationTests.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright 2014 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.
+ * 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.springframework.batch.core.configuration.annotation;
+
+import org.junit.Test;
+import org.springframework.batch.core.BatchStatus;
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.JobExecution;
+import org.springframework.batch.core.JobParameters;
+import org.springframework.batch.core.PooledEmbeddedDataSource;
+import org.springframework.batch.core.Step;
+import org.springframework.batch.core.StepContribution;
+import org.springframework.batch.core.launch.JobLauncher;
+import org.springframework.batch.core.repository.JobRepository;
+import org.springframework.batch.core.scope.context.ChunkContext;
+import org.springframework.batch.core.step.tasklet.Tasklet;
+import org.springframework.batch.repeat.RepeatStatus;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.support.GenericApplicationContext;
+import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
+import org.springframework.stereotype.Component;
+
+import javax.sql.DataSource;
+
+import static junit.framework.Assert.assertEquals;
+
+public class MapJobRepositoryConfigurationTests {
+
+	JobLauncher jobLauncher;
+	JobRepository jobRepository;
+	Job job;
+
+	@Test
+	public void testRoseyScenario() throws Exception {
+		testConfigurationClass(MapRepositoryBatchConfiguration.class);
+	}
+
+	@Test
+	public void testOneDataSource() throws Exception {
+		testConfigurationClass(HsqlBatchConfiguration.class);
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void testMultipleDataSources() throws Exception {
+		testConfigurationClass(InvalidBatchConfiguration.class);
+	}
+
+	private void testConfigurationClass(Class clazz) throws Exception {
+		GenericApplicationContext context = new AnnotationConfigApplicationContext(clazz);
+		this.jobLauncher = context.getBean(JobLauncher.class);
+		this.jobRepository = context.getBean(JobRepository.class);
+		this.job = context.getBean(Job.class);
+
+		JobExecution jobExecution = jobLauncher.run(job, new JobParameters());
+		assertEquals(BatchStatus.COMPLETED, jobExecution.getStatus());
+		JobExecution repositoryJobExecution = jobRepository.getLastJobExecution(job.getName(), new JobParameters());
+		assertEquals(jobExecution.getId(), repositoryJobExecution.getId());
+		context.close();
+	}
+
+	public static class InvalidBatchConfiguration extends HsqlBatchConfiguration {
+
+		@Bean
+		DataSource dataSource2() {
+			return new PooledEmbeddedDataSource(new EmbeddedDatabaseBuilder().setName("badDatabase").build());
+		}
+	}
+
+	public static class HsqlBatchConfiguration extends MapRepositoryBatchConfiguration {
+
+		@Bean
+		DataSource dataSource() {
+			return new PooledEmbeddedDataSource(new EmbeddedDatabaseBuilder().
+				addScript("classpath:org/springframework/batch/core/schema-drop-hsqldb.sql").
+				addScript("classpath:org/springframework/batch/core/schema-hsqldb.sql").
+				build());
+		}
+	}
+
+	@Component
+	@EnableBatchProcessing
+	public static class MapRepositoryBatchConfiguration {
+		@Autowired
+		JobBuilderFactory jobFactory;
+
+		@Autowired
+		StepBuilderFactory stepFactory;
+
+		@Bean
+		Step step1 () {
+			return stepFactory.get("step1").tasklet(new Tasklet() {
+				@Override
+				public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
+					return RepeatStatus.FINISHED;
+				}
+			}).build();
+		}
+
+		@Bean
+		Job job() {
+			return jobFactory.get("job").start(step1()).build();
+		}
+	}
+}