INT-8 initial check-in of some (still rough) ideas for Claim Check support by a Message Transformer implementation.

org.springframework.integration/src/test/java/org/springframework/integration/transformer/ClaimCheckTransformerTests.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2002-2010 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.integration.transformer;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.UUID;
+
+import org.junit.Test;
+
+import org.springframework.integration.core.Message;
+import org.springframework.integration.message.MessageBuilder;
+import org.springframework.integration.store.MessageStore;
+import org.springframework.integration.store.SimpleMessageStore;
+
+/**
+ * @author Mark Fisher
+ * @since 2.0
+ */
+public class ClaimCheckTransformerTests {
+
+	@Test
+	public void store() {
+		MessageStore store = new SimpleMessageStore(10);
+		ClaimCheckTransformer transformer = new ClaimCheckTransformer(store);
+		Message<?> input = MessageBuilder.withPayload("test").build();
+		Message<?> output = transformer.transform(input);
+		assertEquals(input.getHeaders().getId(), output.getPayload());
+	}
+
+	@Test
+	public void retrieve() {
+		MessageStore store = new SimpleMessageStore(10);
+		Message<?> message = MessageBuilder.withPayload("test").build();
+		UUID storedId = message.getHeaders().getId();
+		store.put(message);
+		ClaimCheckTransformer transformer = new ClaimCheckTransformer(store);
+		Message<?> input = MessageBuilder.withPayload(storedId).build();
+		Message<?> output = transformer.transform(input);
+		assertEquals("test", output.getPayload());
+	}
+
+	@Test(expected = MessageTransformationException.class)
+	public void unknown() {
+		MessageStore store = new SimpleMessageStore(10);
+		ClaimCheckTransformer transformer = new ClaimCheckTransformer(store);
+		transformer.transform(MessageBuilder.withPayload(UUID.randomUUID()).build());
+	}
+
+}