Remove unique transition pattern check per JSR requirements. Transitions are ordered based on their ordering in the job defintion XML document, so for example having an end and stop transition both with a pattern of "foo" is valid.

spring-batch-core/src/test/java/org/springframework/batch/core/jsr/configuration/xml/FlowParserTests.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2013 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.jsr.configuration.xml;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.batch.core.*;
+import org.springframework.batch.core.launch.JobLauncher;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import javax.batch.api.Batchlet;
+import javax.batch.runtime.context.StepContext;
+import javax.inject.Inject;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * <p>
+ * Unit tests around {@link FlowParser}.
+ * </p>
+ *
+ * @author Chris Schaefer
+ * @since 3.0
+ */
+@ContextConfiguration
+@RunWith(SpringJUnit4ClassRunner.class)
+public class FlowParserTests {
+	@Autowired
+	private Job job;
+
+	@Autowired
+	private JobLauncher jobLauncher;
+
+	@Test
+	public void testDuplicateTransitionPatternsAllowed() throws Exception {
+		JobExecution stoppedExecution = jobLauncher.run(job, new JobParameters());
+		assertEquals(ExitStatus.STOPPED.getExitCode(), stoppedExecution.getExitStatus().getExitCode());
+
+		JobExecution endedExecution = jobLauncher.run(job, new JobParameters());
+		assertEquals(ExitStatus.COMPLETED.getExitCode(), endedExecution.getExitStatus().getExitCode());
+
+		JobExecution failedExecution = jobLauncher.run(job, new JobParameters());
+		assertEquals(ExitStatus.FAILED.getExitCode(), failedExecution.getExitStatus().getExitCode());
+	}
+
+	public static class TestBatchlet implements Batchlet {
+		private static int CNT;
+
+		@Inject
+		private StepContext stepContext;
+
+		@Override
+		public String process() throws Exception {
+			String exitCode = "DISTINCT";
+
+			if("step3".equals(stepContext.getStepName())) {
+				exitCode = CNT % 2 == 0 ? "DISTINCT" : "RESTART";
+				CNT++;
+			}
+
+			return exitCode;
+		}
+
+		@Override
+		public void stop() throws Exception { }
+	}
+}