juneau-utest-utils/src/main/java/org/apache/juneau/testutils/StreamUtils.java

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package org.apache.juneau.testutils;

import java.io.*;

/**
 * Various stream convenience methods.
 */
public class StreamUtils {

	/**
	 * Creates an input stream from the specified string.
	 *
	 * @param in The contents of the reader.
	 * @return A new input stream.
	 */
	public static final ByteArrayInputStream inputStream(String in) {
		return new ByteArrayInputStream(in.getBytes());
	}

	/**
	 * Creates a reader from the specified string.
	 *
	 * @param in The contents of the reader.
	 * @return A new reader.
	 */
	public static final StringReader reader(String in) {
		return new StringReader(in);
	}

	/**
	 * Returns a capturing print stream.
	 *
	 * <p>
	 * Print stream contents can be retrieved by calling {@link Object#toString()} on the object.
	 *
	 * @return A new print stream.
	 */
	public static final PrintStream printStream() {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		return new PrintStream(baos, true) {
			@Override
			public String toString() {
				return baos.toString();
			}
		};
	}
}