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/*
 * Copyright (C) 2008 Steve Ratcliffe
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *
 * Author: Steve Ratcliffe
 * Create date: 11-Jan-2009
 */
package func.lib;

import static org.junit.Assert.*;

/**
 * Standard output and error as produced during a run.
 *
 * @author Steve Ratcliffe
 */
public class Outputs {
        private final String out;
        private final String err;

        public Outputs(String out, String err) {
                this.out = out;
                this.err = err;
        }

        protected String getOut() {
                return out;
        }

        protected String getErr() {
                return err;
        }

        /**
         * Check that the standard error is empty.
         */
        public void checkNoError() {
                assertEquals("no error output", "", getErr());
        }

        /**
         * Check that the output contains the given strings.  You can specify
         * any number of strings.
         * @param strings The list of strings to check.
         */
        public void checkOutput(String... strings) {
                String out = getOut();
                for (String s : strings) {
                        if (!out.contains(s)) {
                                // Test has failed.  Construct an assertion that will print
                                // something that is useful to show the problem.
                                assertEquals("contains '" + s + "'",
                                                "..." + s + "...",
                                                out);
                        }
                }
        }

        /**
         * Check that the output contains the given strings.  You can specify
         * any number of strings.
         * @param strings The list of strings to check.
         */
        public void checkError(String... strings) {
                String err = getErr();
                for (String s : strings) {
                        if (!err.contains(s)) {
                                // Test has failed.  Construct an assertion that will print
                                // something that is useful to show the problem.
                                assertEquals("contains '" + s + "'",
                                                "..." + s + "...",
                                                err);
                        }
                }
        }
}