IndentingPrintWriterTests.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.StringWriter;

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.IndentingPrintWriter;


public class IndentingPrintWriterTests extends TestCase {
    StringWriter sw1;
    StringWriter sw2;
    IndentingPrintWriter ipw1;
    IndentingPrintWriter ipw2;

    static final String CR = System.getProperty("line.separator");

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

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

    public void setUp() throws Exception {
        super.setUp();
        this.sw1 = new StringWriter();
        this.ipw1 = new IndentingPrintWriter(this.sw1);
        this.sw2 = new StringWriter();
        this.ipw2 = new IndentingPrintWriter(this.sw2, "    ");    // indent with 4 spaces instead of a tab
    }

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

    public void testIndent() {
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
        this.ipw1.indent();
        assertEquals("wrong indent level", 1, this.ipw1.getIndentLevel());
    }

    public void testUndent() {
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
        this.ipw1.indent();
        assertEquals("wrong indent level", 1, this.ipw1.getIndentLevel());
        this.ipw1.undent();
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
    }

    public void testIncrementIndentLevel() {
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
        this.ipw1.incrementIndentLevel();
        assertEquals("wrong indent level", 1, this.ipw1.getIndentLevel());
    }

    public void testDecrementIndentLevel() {
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
        this.ipw1.incrementIndentLevel();
        assertEquals("wrong indent level", 1, this.ipw1.getIndentLevel());
        this.ipw1.decrementIndentLevel();
        assertEquals("wrong indent level", 0, this.ipw1.getIndentLevel());
    }

    public void testPrintTab() {
        String expected =
            "foo0" + CR +
            "\tfoo1" + CR +
            "\tfoo1" + CR +
            "\t\tfoo2" + CR +
            "\tfoo1" + CR +
            "\tfoo1" + CR +
            "foo0" + CR;

        this.ipw1.println("foo0");
        this.ipw1.indent();
        this.ipw1.println("foo1");
        this.ipw1.println("foo1");
        this.ipw1.indent();
        this.ipw1.println("foo2");
        this.ipw1.undent();
        this.ipw1.println("foo1");
        this.ipw1.println("foo1");
        this.ipw1.undent();
        this.ipw1.println("foo0");

        assertEquals("bogus output", expected, this.sw1.toString());
    }

    public void testPrintSpaces() {
        String expected =
            "foo0" + CR +
            "    foo1" + CR +
            "    foo1" + CR +
            "        foo2" + CR +
            "    foo1" + CR +
            "    foo1" + CR +
            "foo0" + CR;

        this.ipw2.println("foo0");
        this.ipw2.indent();
        this.ipw2.println("foo1");
        this.ipw2.println("foo1");
        this.ipw2.indent();
        this.ipw2.println("foo2");
        this.ipw2.undent();
        this.ipw2.println("foo1");
        this.ipw2.println("foo1");
        this.ipw2.undent();
        this.ipw2.println("foo0");

        assertEquals("bogus output", expected, this.sw2.toString());
    }

}