com.sonarsource.cobol.ebcdic.FileConverterTest.java Source code

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Here is the source code for com.sonarsource.cobol.ebcdic.FileConverterTest.java

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/*
 * EBCDIC to ASCII converter
 * Copyright (C) 2012 SonarSource
 * dev@sonar.codehaus.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package com.sonarsource.cobol.ebcdic;

import org.apache.commons.io.FileUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import java.io.File;
import java.io.StringWriter;
import java.nio.charset.Charset;

import static org.fest.assertions.Assertions.assertThat;

public class FileConverterTest {

    @Rule
    public ExpectedException thrown = ExpectedException.none();

    private FileConverter converter = new FileConverter(Charset.forName("UTF-8"), Charset.forName("UTF-8"));

    @Test
    public void shouldConvertCarriageReturnAndLineFeedIntoWhitespace() throws Exception {
        StringWriter writer = new StringWriter();
        converter.convert("This is\ra\nline", writer);
        assertThat(writer.toString()).isEqualTo("This is a line");
    }

    @Test
    public void shouldConvertNextLineIntoLineFeed() throws Exception {
        StringWriter writer = new StringWriter();
        converter.convert("This is a " + (char) 0x15 + " new line", writer);
        assertThat(writer.toString()).isEqualTo("This is a \n new line");
    }

    public static void main(String[] args) {
        FileConverter converter = new FileConverter(Charset.forName("UTF-8"), Charset.forName("UTF-8"));
        StringWriter writer = new StringWriter();
        try {
            converter.convert("This is a " + (char) 0x15 + " new line", writer);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void shouldConvertNextLineIntoWhitespaceWhenFixedLength() throws Exception {
        converter.setFixedLength(30);
        StringWriter writer = new StringWriter();
        converter.convert("This is a" + (char) 0x15 + "space", writer);
        assertThat(writer.toString()).isEqualTo("This is a space");
    }

    @Test
    public void shouldInsertLineFeedAtTheEndOfFixedLengthLines() throws Exception {
        converter.setFixedLength(3);
        StringWriter writer = new StringWriter();
        converter.convert("a23456789", writer);
        assertThat(writer.toString()).isEqualTo("a23\n456\n789");
    }

    @Test
    public void shouldConvertEbcdicFile() throws Exception {
        converter = new FileConverter(FileConverter.CP1047, Charset.forName("UTF-8"));
        converter.setFixedLength(80);
        File ebcdicFile = new File(FileConverterTest.class.getResource("/EBCDIC.txt").toURI());
        File expectedOutputFile = new File(FileConverterTest.class.getResource("/ASCII.txt").toURI());

        File workingFile = new File("target/converter/cobol.txt");
        FileUtils.copyFile(ebcdicFile, workingFile);

        converter.convert(workingFile, workingFile);
        assertThat(FileUtils.contentEquals(workingFile, expectedOutputFile)).isTrue();
    }

    @Test
    public void shouldDecreaseArraySize() {
        int[] newArray = converter.resizeArray(new int[] { 1, 2, 3 }, 2);
        assertThat(newArray).hasSize(2).isEqualTo(new int[] { 1, 2 });
    }

    @Test
    public void shouldIncreaseArraySize() {
        int[] newArray = converter.resizeArray(new int[] { 1, 2, 3 }, 4);
        assertThat(newArray).hasSize(4).isEqualTo(new int[] { 1, 2, 3, 0 });
    }

}