BATCH-1103: Added partitioning sample

spring-batch-core/src/test/java/org/springframework/batch/core/partition/support/MultiResourcePartitionerTests.java

@@ -0,0 +1,54 @@
+package org.springframework.batch.core.partition.support;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.batch.item.ExecutionContext;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.UrlResource;
+import org.springframework.core.io.support.ResourceArrayPropertyEditor;
+
+public class MultiResourcePartitionerTests {
+
+	private MultiResourcePartitioner partitioner = new MultiResourcePartitioner();
+
+	@Before
+	public void setUp() {
+		ResourceArrayPropertyEditor editor = new ResourceArrayPropertyEditor();
+		editor.setAsText("classpath:log4j*");
+		partitioner.setResources((Resource[]) editor.getValue());
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void testMissingResource() {
+		partitioner.setResources(new Resource[] { new FileSystemResource("does-not-exist") });
+		partitioner.partition(0);
+	}
+
+	@Test
+	public void testPartitionSizeAndKey() {
+		Map<String, ExecutionContext> partition = partitioner.partition(0);
+		assertEquals(1, partition.size());
+		assertTrue(partition.containsKey("partition0"));
+	}
+
+	@Test
+	public void testReadFile() throws Exception {
+		Map<String, ExecutionContext> partition = partitioner.partition(0);
+		String url = partition.get("partition0").getString("fileName");
+		assertTrue(new UrlResource(url).exists());
+	}
+
+	@Test
+	public void testSetKeyName() {
+		partitioner.setKeyName("foo");
+		Map<String, ExecutionContext> partition = partitioner.partition(0);
+		assertTrue(partition.get("partition0").containsKey("foo"));
+	}
+
+}