OPEN - issue BATCH-324: Step as factory for StepExecutor

http://jira.springframework.org/browse/BATCH-324

Consolidate changes and remove unnecessary methods from interfaces

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

@@ -18,8 +18,6 @@ package org.springframework.batch.core.configuration;
 import junit.framework.TestCase;
 
 import org.springframework.batch.core.domain.StepSupport;
-import org.springframework.batch.core.tasklet.Tasklet;
-import org.springframework.batch.repeat.ExitStatus;
 
 /**
  * @author Dave Syer
@@ -53,20 +51,6 @@ public class StepSupportTests extends TestCase {
 		assertEquals(10, configuration.getStartLimit());
 	}
 
-	/**
-	 * Test method for {@link org.springframework.batch.core.domain.StepSupport#getTasklet()}.
-	 */
-	public void testGetTasklet() {
-		assertEquals(null, configuration.getTasklet());
-		Tasklet tasklet = new Tasklet() {
-			public ExitStatus execute() throws Exception {
-				return ExitStatus.FINISHED;
-			}
-		};
-		configuration.setTasklet(tasklet);
-		assertEquals(tasklet, configuration.getTasklet());
-	}
-
 	/**
 	 * Test method for {@link org.springframework.batch.core.domain.StepSupport#isAllowStartIfComplete()}.
 	 */
@@ -76,4 +60,17 @@ public class StepSupportTests extends TestCase {
 		assertEquals(true, configuration.isAllowStartIfComplete());
 	}
 
+	public void testUnsuccessfulWrongConfiguration() throws Exception {
+		try {
+			new StepSupport().createStepExecutor();
+			fail("Expected UnsupportedOperationException");
+		} catch (UnsupportedOperationException e) {
+			// expected
+			assertTrue(
+					"Error message does not contain SimpleStep: "
+							+ e.getMessage(), e.getMessage().indexOf(
+							"SimpleStep") >= 0);
+		}
+	}
+
 }