NullReaderTests.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.test.utility.io;

import java.io.IOException;
import java.io.Reader;
import java.util.Arrays;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.persistence.tools.workbench.test.utility.TestTools;
import org.eclipse.persistence.tools.workbench.utility.io.NullReader;


public class NullReaderTests extends TestCase {
    private Reader nullReader;

    public static Test suite() {
        return new TestSuite(NullReaderTests.class);
    }

    public NullReaderTests(String name) {
        super(name);
    }

    protected void setUp() throws Exception {
        super.setUp();
        this.nullReader = NullReader.instance();
    }

    protected void tearDown() throws Exception {
        TestTools.clear(this);
        super.tearDown();
    }

    public void testClose() throws IOException {
        this.nullReader.close();
    }

    public void testRead() throws IOException {
        assertEquals(-1, this.nullReader.read());
    }

    public void testReadCharArray() throws IOException {
        char[] expected = new char[10];
        Arrays.fill(expected, 'a');
        char[] actual = new char[10];
        Arrays.fill(actual, 'a');
        assertEquals(-1, this.nullReader.read(actual));
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testReadCharArrayIntInt() throws IOException {
        char[] expected = new char[10];
        Arrays.fill(expected, 'a');
        char[] actual = new char[10];
        Arrays.fill(actual, 'a');
        assertEquals(-1, this.nullReader.read(actual, 2, 5));
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testSkip() throws IOException {
        assertEquals(0, this.nullReader.skip(5));
    }

    public void testMark() {
        boolean exCaught = false;
        try {
            this.nullReader.mark(5);
        } catch (IOException ex) {
            exCaught = true;
        }
        assertTrue(exCaught);
    }

    public void testMarkSupported() {
        assertFalse(this.nullReader.markSupported());
    }

    public void testReady() {
        assertFalse(this.nullReader.markSupported());
    }

    public void testReset() {
        boolean exCaught = false;
        try {
            this.nullReader.reset();
        } catch (IOException ex) {
            exCaught = true;
        }
        assertTrue(exCaught);
    }

}