Committed tests for file-to-bytes and file-to-string transformers.

org.springframework.integration.file/src/test/java/org/springframework/integration/file/transformer/AbstractFilePayloadTransformerTests.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2002-2009 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.file.transformer;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.junit.Assert.assertThat;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.integration.core.Message;
+import org.springframework.integration.file.FileHeaders;
+import org.springframework.integration.message.MessageBuilder;
+import org.springframework.util.FileCopyUtils;
+
+/**
+ * @author Alex Peters
+ */
+public abstract class AbstractFilePayloadTransformerTests<T extends AbstractFilePayloadTransformer<?>> {
+
+	static final String DEFAULT_ENCODING = "UTF-8";
+
+	static final String SAMPLE_CONTENT = "HelloWorld\näöüß";
+
+	T transformer;
+
+	Message<File> message;
+
+	File sourceFile;
+
+
+	@Before
+	public void setUpCommonTestdata() throws Exception {
+		sourceFile = File.createTempFile("anyFile", ".txt");
+		sourceFile.deleteOnExit();
+		FileCopyUtils.copy(SAMPLE_CONTENT.getBytes(DEFAULT_ENCODING),
+				new FileOutputStream(sourceFile, false));
+		message = MessageBuilder.withPayload(sourceFile).build();
+	}
+
+	@After
+	public void tearDownCommonTestdata() throws IOException {
+		if (sourceFile.exists()) {
+			sourceFile.delete();
+		}
+	}
+
+	@Test
+	public void transform_withSourceHeaderValues_copiedToResult() throws Exception {
+		String anyKey = "foo1";
+		String anyValue = "bar1";
+		message = MessageBuilder.fromMessage(message).setHeader(anyKey, anyValue).build();
+		Message<?> result = transformer.transform(message);
+		assertThat(result, is(notNullValue()));
+		// TODO: refactor to header matcher
+		assertThat(result.getHeaders().get(anyKey, String.class), is(anyValue));
+	}
+
+	@Test
+	public void transform_withFilePayload_filenameInHeaders() throws Exception {
+		Message<?> result = transformer.transform(message);
+		assertThat(result, is(notNullValue()));
+		// TODO: refactor to header matcher
+		assertThat(result.getHeaders().get(FileHeaders.FILENAME, String.class),
+				is(sourceFile.getName()));
+	}
+
+	@Test
+	public void transform_withDefaultSettings_fileNotDeleted() throws Exception {
+		transformer.transform(message);
+		assertThat(sourceFile.exists(), is(true));
+	}
+
+	@Test
+	public void transform_withDeleteSetting_doesNotExistAtOldLocation() throws Exception {
+		transformer.setDeleteFiles(true);
+		transformer.transform(message);
+		assertThat("exists at: " + sourceFile.getAbsolutePath(), sourceFile.exists(), is(false));
+	}
+
+}

org.springframework.integration.file/src/test/java/org/springframework/integration/file/transformer/FileToByteArrayTransformerTests.java

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+/*
+ * Copyright 2002-2009 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.file.transformer;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.junit.Assert.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.integration.core.Message;
+
+/**
+ * @author Alex Peters
+ */
+public class FileToByteArrayTransformerTests extends
+		AbstractFilePayloadTransformerTests<FileToByteArrayTransformer> {
+
+	@Before
+	public void setUp() {
+		transformer = new FileToByteArrayTransformer();
+	}
+
+	@Test
+	public void transform_withFilePayload_convertedToByteArray() throws Exception {
+		Message<?> result = transformer.transform(message);
+		assertThat(result, is(notNullValue()));
+		// TODO: refactor to payload matcher
+		assertThat(result.getPayload(), is(byte[].class));
+		assertThat((byte[]) result.getPayload(), is(SAMPLE_CONTENT.getBytes(DEFAULT_ENCODING)));
+	}
+
+}

org.springframework.integration.file/src/test/java/org/springframework/integration/file/transformer/FileToStringTransformerTests.java

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+/*
+ * Copyright 2002-2009 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.file.transformer;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.junit.Assert.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.integration.core.Message;
+
+/**
+ * @author Alex Peters
+ */
+public class FileToStringTransformerTests extends
+		AbstractFilePayloadTransformerTests<FileToStringTransformer> {
+
+	@Before
+	public void setUp() {
+		transformer = new FileToStringTransformer();
+		transformer.setCharset(DEFAULT_ENCODING);
+	}
+
+	@Test
+	public void transform_withFilePayload_convertedToString() throws Exception {
+		Message<?> result = transformer.transform(message);
+		assertThat(result, is(notNullValue()));
+		// TODO: refactor to payload matcher
+		assertThat(result.getPayload(), is(String.class));
+		assertThat((String) result.getPayload(), is(SAMPLE_CONTENT));
+	}
+
+	@Test
+	public void transform_withWrongEncoding_notMatching() throws Exception {
+		transformer.setCharset("ISO-8859-1");
+		Message<?> result = transformer.transform(message);
+		assertThat(result, is(notNullValue()));
+		// TODO: refactor to payload matcher
+		assertThat(result.getPayload(), is(String.class));
+		assertThat((String) result.getPayload(), is(not(SAMPLE_CONTENT)));
+	}
+
+}