Scala example source code file (HistoryTest.java)

This example Scala source code file (HistoryTest.java) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

buffer, consolereadertestsupport, exception, historytest, test, xxx, xxxtest

The HistoryTest.java Scala example source code

/*
 * Copyright (c) 2002-2007, Marc Prud'hommeaux. All rights reserved.
 *
 * This software is distributable under the BSD license. See the terms of the
 * BSD license in the documentation provided with this software.
 */
package scala.tools.jline.console.history;

import scala.tools.jline.console.ConsoleReaderTestSupport;
import org.junit.Test;

import static scala.tools.jline.console.Operation.MOVE_TO_BEG;
import static scala.tools.jline.console.Operation.NEWLINE;
import static scala.tools.jline.console.Operation.NEXT_HISTORY;
import static scala.tools.jline.console.Operation.PREV_HISTORY;
import static scala.tools.jline.console.Operation.PREV_CHAR;

/**
 * Tests command history.
 *
 * @author <a href="mailto:mwp1@cornell.edu">Marc Prud'hommeaux</a>
 */
public class HistoryTest
    extends ConsoleReaderTestSupport
{
    @Test
    public void testSingleHistory() throws Exception {
        Buffer b = new Buffer().
            append("test line 1").op(NEWLINE).
            append("test line 2").op(NEWLINE).
            append("test line 3").op(NEWLINE).
            append("test line 4").op(NEWLINE).
            append("test line 5").op(NEWLINE).
            append("");

        assertBuffer("", b);

        assertBuffer("test line 5", b = b.op(PREV_HISTORY));
        assertBuffer("test line 5", b = b.op(PREV_CHAR));
        assertBuffer("test line 4", b = b.op(PREV_HISTORY));
        assertBuffer("test line 5", b = b.op(NEXT_HISTORY));
        assertBuffer("test line 4", b = b.op(PREV_HISTORY));
        assertBuffer("test line 3", b = b.op(PREV_HISTORY));
        assertBuffer("test line 2", b = b.op(PREV_HISTORY));
        assertBuffer("test line 1", b = b.op(PREV_HISTORY));

        // beginning of history
        assertBuffer("test line 1", b = b.op(PREV_HISTORY));
        assertBuffer("test line 1", b = b.op(PREV_HISTORY));
        assertBuffer("test line 1", b = b.op(PREV_HISTORY));
        assertBuffer("test line 1", b = b.op(PREV_HISTORY));

        assertBuffer("test line 2", b = b.op(NEXT_HISTORY));
        assertBuffer("test line 3", b = b.op(NEXT_HISTORY));
        assertBuffer("test line 4", b = b.op(NEXT_HISTORY));
        assertBuffer("test line 5", b = b.op(NEXT_HISTORY));

        // end of history
        assertBuffer("", b = b.op(NEXT_HISTORY));
        assertBuffer("", b = b.op(NEXT_HISTORY));
        assertBuffer("", b = b.op(NEXT_HISTORY));

        assertBuffer("test line 5", b = b.op(PREV_HISTORY));
        assertBuffer("test line 4", b = b.op(PREV_HISTORY));
        b = b.op(MOVE_TO_BEG).append("XXX").op(NEWLINE);
        assertBuffer("XXXtest line 4", b = b.op(PREV_HISTORY));
        assertBuffer("test line 5", b = b.op(PREV_HISTORY));
        assertBuffer("test line 4", b = b.op(PREV_HISTORY));
        assertBuffer("test line 5", b = b.op(NEXT_HISTORY));
        assertBuffer("XXXtest line 4", b = b.op(NEXT_HISTORY));
        assertBuffer("", b = b.op(NEXT_HISTORY));

        assertBuffer("XXXtest line 4", b = b.op(PREV_HISTORY));
        assertBuffer("XXXtest line 4", b = b.op(NEWLINE).op(PREV_HISTORY));
        assertBuffer("XXXtest line 4", b = b.op(NEWLINE).op(PREV_HISTORY));
        assertBuffer("XXXtest line 4", b = b.op(NEWLINE).op(PREV_HISTORY));
        assertBuffer("XXXtest line 4", b = b.op(NEWLINE).op(PREV_HISTORY));
    }
}