Added source adapter for character-based input streams.

2008-01-11 20:36:55 +00:00
parent 8ddf1d98ad
commit 39a6667a76
5 changed files with 225 additions and 0 deletions
--- a/spring-integration-core/src/test/java/org/springframework/integration/adapter/stream/CharacterStreamSourceAdapterTests.java
+++ b/spring-integration-core/src/test/java/org/springframework/integration/adapter/stream/CharacterStreamSourceAdapterTests.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2002-2007 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.adapter.stream;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import java.io.ByteArrayInputStream;
+
+import org.junit.Test;
+
+import org.springframework.integration.channel.MessageChannel;
+import org.springframework.integration.channel.SimpleChannel;
+import org.springframework.integration.message.Message;
+
+/**
+ * @author Mark Fisher
+ */
+public class CharacterStreamSourceAdapterTests {
+
+	@Test
+	public void testEndOfStream() {
+		byte[] bytes = "test".getBytes();
+		ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
+		MessageChannel channel = new SimpleChannel();
+		CharacterStreamSourceAdapter adapter = new CharacterStreamSourceAdapter(stream);
+		adapter.setChannel(channel);
+		adapter.start();
+		int count = adapter.dispatch();
+		assertEquals(1, count);
+		Message<?> message1 = channel.receive(0);
+		assertEquals("test", message1.getPayload());
+		Message<?> message2 = channel.receive(0);
+		assertNull(message2);
+		adapter.dispatch();
+		Message<?> message3 = channel.receive(0);
+		assertNull(message3);
+	}
+
+	@Test
+	public void testEndOfStreamWithMaxMessagesPerTask() {
+		byte[] bytes = "test".getBytes();
+		ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
+		MessageChannel channel = new SimpleChannel();
+		CharacterStreamSourceAdapter adapter = new CharacterStreamSourceAdapter(stream);
+		adapter.setChannel(channel);
+		adapter.setMaxMessagesPerTask(5);
+		adapter.start();
+		int count = adapter.dispatch();
+		assertEquals(1, count);
+		Message<?> message1 = channel.receive(0);
+		assertEquals("test", message1.getPayload());
+		Message<?> message2 = channel.receive(0);
+		assertNull(message2);
+	}
+
+	@Test
+	public void testMultipleLinesWithSingleMessagePerTask() {
+		String s = "test1" + System.getProperty("line.separator") + "test2";
+		ByteArrayInputStream stream = new ByteArrayInputStream(s.getBytes());
+		MessageChannel channel = new SimpleChannel();
+		CharacterStreamSourceAdapter adapter = new CharacterStreamSourceAdapter(stream);
+		adapter.setMaxMessagesPerTask(1);
+		adapter.setChannel(channel);
+		adapter.start();
+		int count = adapter.dispatch();
+		assertEquals(1, count);
+		Message<?> message1 = channel.receive(0);
+		assertEquals("test1", message1.getPayload());
+		Message<?> message2 = channel.receive(0);
+		assertNull(message2);
+		adapter.dispatch();
+		Message<?> message3 = channel.receive(0);
+		assertEquals("test2", message3.getPayload());
+	}
+
+	@Test
+	public void testLessThanMaxMessagesAvailable() {
+		String s = "test1" + System.getProperty("line.separator") + "test2";
+		ByteArrayInputStream stream = new ByteArrayInputStream(s.getBytes());
+		MessageChannel channel = new SimpleChannel();
+		CharacterStreamSourceAdapter adapter = new CharacterStreamSourceAdapter(stream);
+		adapter.setChannel(channel);
+		adapter.setMaxMessagesPerTask(5);
+		adapter.start();
+		int count = adapter.dispatch();
+		assertEquals(2, count);
+		Message<?> message1 = channel.receive(0);
+		assertEquals("test1", message1.getPayload());
+		Message<?> message2 = channel.receive(0);
+		assertEquals("test2", message2.getPayload());
+		Message<?> message3 = channel.receive(0);
+		assertNull(message3);
+	}
+
+}