BATCH-1882: Add support for AMQP backed ItemReader / ItemWriter implementations

Add Spring AMQP and Spring Rabbit dependencies. Update
EasyMock from 2.3 to 2.4 to allow for concrete class mocking.

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/amqp/AmqpItemReaderTests.java

@@ -0,0 +1,109 @@
+/*
+ * Copyright 2012 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.item.amqp;
+
+import org.easymock.classextension.EasyMock;
+import org.junit.Test;
+import org.springframework.amqp.core.AmqpTemplate;
+import org.springframework.amqp.core.Message;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+/**
+ * <p>
+ * Test cases around {@link AmqpItemReader}.
+ * </p>
+ *
+ * @author Chris Schaefer
+ */
+public class AmqpItemReaderTests {
+    @Test(expected = IllegalArgumentException.class)
+    public void testNullAmqpTemplate() {
+        new AmqpItemReader<String>(null);
+    }
+
+    @Test
+    public void testNoItemType() {
+        final AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+        EasyMock.expect(amqpTemplate.receiveAndConvert()).andReturn("foo");
+        EasyMock.replay(amqpTemplate);
+
+        final AmqpItemReader<String> amqpItemReader = new AmqpItemReader<String>(amqpTemplate);
+        assertEquals("foo", amqpItemReader.read());
+        EasyMock.verify(amqpTemplate);
+    }
+
+    @Test
+    public void testNonMessageItemType() {
+        final AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+        EasyMock.expect(amqpTemplate.receiveAndConvert()).andReturn("foo");
+        EasyMock.replay(amqpTemplate);
+
+        final AmqpItemReader<String> amqpItemReader = new AmqpItemReader<String>(amqpTemplate);
+        amqpItemReader.setItemType(String.class);
+
+        assertEquals("foo", amqpItemReader.read());
+
+        EasyMock.verify(amqpTemplate);
+    }
+
+    @Test
+    public void testMessageItemType() {
+        final AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+        final Message message = EasyMock.createMock(Message.class);
+
+        EasyMock.expect(amqpTemplate.receive()).andReturn(message);
+        EasyMock.replay(amqpTemplate, message);
+
+        final AmqpItemReader<Message> amqpItemReader = new AmqpItemReader<Message>(amqpTemplate);
+        amqpItemReader.setItemType(Message.class);
+
+        assertEquals(message, amqpItemReader.read());
+
+        EasyMock.verify(amqpTemplate);
+    }
+
+    @Test
+    public void testTypeMismatch() {
+        final AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+
+        EasyMock.expect(amqpTemplate.receiveAndConvert()).andReturn("foo");
+        EasyMock.replay(amqpTemplate);
+
+        final AmqpItemReader<Integer> amqpItemReader = new AmqpItemReader<Integer>(amqpTemplate);
+        amqpItemReader.setItemType(Integer.class);
+
+        try {
+            amqpItemReader.read();
+            fail("Expected IllegalStateException");
+        } catch (IllegalStateException e) {
+            assertTrue(e.getMessage().contains("wrong type"));
+        }
+
+        EasyMock.verify(amqpTemplate);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testNullItemType() {
+        final AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+
+        final AmqpItemReader<String> amqpItemReader = new AmqpItemReader<String>(amqpTemplate);
+        amqpItemReader.setItemType(null);
+    }
+}

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/amqp/AmqpItemWriterTests.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2012 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.item.amqp;
+
+import org.easymock.EasyMock;
+import org.junit.Test;
+import org.springframework.amqp.core.AmqpTemplate;
+
+import java.util.Arrays;
+
+/**
+ * <p>
+ * Test cases around {@link AmqpItemWriter}.
+ * </p>
+ *
+ * @author Chris Schaefer
+ */
+public class AmqpItemWriterTests {
+    @Test(expected = IllegalArgumentException.class)
+    public void testNullAmqpTemplate() {
+        new AmqpItemWriter<String>(null);
+    }
+
+    @Test
+    public void voidTestWrite() throws Exception {
+        AmqpTemplate amqpTemplate = EasyMock.createMock(AmqpTemplate.class);
+
+        amqpTemplate.convertAndSend("foo");
+        EasyMock.expectLastCall();
+
+        amqpTemplate.convertAndSend("bar");
+        EasyMock.expectLastCall();
+
+        EasyMock.replay(amqpTemplate);
+
+        AmqpItemWriter<String> amqpItemWriter = new AmqpItemWriter<String>(amqpTemplate);
+        amqpItemWriter.write(Arrays.asList("foo", "bar"));
+
+        EasyMock.verify(amqpTemplate);
+
+    }
+}