BATCH-1346: added test and extra Javadocs to clarify

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/AbstractDatabaseItemStreamItemReaderTests.java

@@ -5,7 +5,9 @@ import static org.junit.Assert.assertEquals;
 import javax.sql.DataSource;
 
 import org.springframework.batch.item.AbstractItemStreamItemReaderTests;
+import org.springframework.batch.item.ExecutionContext;
 import org.springframework.batch.item.ItemReader;
+import org.springframework.batch.item.ItemStream;
 import org.springframework.batch.item.sample.Foo;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.junit.Before;
@@ -31,13 +33,14 @@ public abstract class AbstractDatabaseItemStreamItemReaderTests extends Abstract
 	@Test
 	public void testReadToExhaustion() throws Exception {
 		ItemReader<Foo> reader = getItemReader();
-		pointToEmptyInput(reader);
+		((ItemStream) reader).open(new ExecutionContext());
+		// pointToEmptyInput(reader);
 		int count = 0;
 		Foo item = new Foo();
 		while (count++<100 && item!=null) {
 			item = reader.read();
 		}
-		assertEquals(2, count);
+		assertEquals(7, count);
 	}
 
 	protected DataSource getDataSource() {

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/IbatisPagingItemReaderCommonTests.java

@@ -23,6 +23,7 @@ public class IbatisPagingItemReaderCommonTests extends AbstractDatabaseItemStrea
 
 		IbatisPagingItemReader reader = new IbatisPagingItemReader();
 		reader.setQueryId("getPagedFoos");
+		reader.setPageSize(2);
 		reader.setSqlMapClient(sqlMapClient);
 		reader.setSaveState(true);