de.codesourcery.eve.skills.util.CsvHelperTest.java Source code

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Here is the source code for de.codesourcery.eve.skills.util.CsvHelperTest.java

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/**
 * Copyright 2004-2009 Tobias Gierke <tobias.gierke@code-sourcery.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.codesourcery.eve.skills.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;

import junit.framework.TestCase;

import org.apache.commons.lang.ArrayUtils;

public class CsvHelperTest extends TestCase {

    public void testWriteEmpty() throws IOException {

        StringWriter writer = new StringWriter();
        CsvHelper.writeCsvLine(writer, new String[0]);
        assertEquals("", writer.toString());
    }

    public void testWriteOneElement() throws IOException {

        StringWriter writer = new StringWriter();
        CsvHelper.writeCsvLine(writer, new String[] { "blubb" });
        assertEquals("blubb" + CsvHelper.LINE_SEPARATOR, writer.toString());
    }

    public void testWriteTwoElements() throws IOException {

        StringWriter writer = new StringWriter();
        CsvHelper.writeCsvLine(writer, new String[] { "blubb", "blah" });
        assertEquals("blubb" + CsvHelper.COLUMN_SEPARATOR + "blah" + CsvHelper.LINE_SEPARATOR, writer.toString());
    }

    public void testWriteTwoLines() throws IOException {

        StringWriter writer = new StringWriter();
        CsvHelper.writeCsvLine(writer, new String[] { "blubb", "blah" });
        CsvHelper.writeCsvLine(writer, new String[] { "xyz", "abc" });
        assertEquals("blubb" + CsvHelper.COLUMN_SEPARATOR + "blah" + CsvHelper.LINE_SEPARATOR + "xyz"
                + CsvHelper.COLUMN_SEPARATOR + "abc" + CsvHelper.LINE_SEPARATOR, writer.toString());
    }

    public void testReadEmpty() throws IOException {

        final StringReader reader = new StringReader("");

        final String[] result = CsvHelper.readCsvLine(new BufferedReader(reader));

        assertArrayEquals(result, new String[0]);
    }

    public void testReadOneElement() throws IOException {

        final StringReader reader = new StringReader("xyz");

        final String[] result = CsvHelper.readCsvLine(new BufferedReader(reader));

        assertArrayEquals(result, "xyz");
    }

    public void testReadTwoElements() throws IOException {

        final StringReader reader = new StringReader("xyz" + CsvHelper.COLUMN_SEPARATOR + "abc");

        final String[] result = CsvHelper.readCsvLine(new BufferedReader(reader));

        assertArrayEquals(result, "xyz", "abc");
    }

    public void testReadTwoLines() throws IOException {

        final StringReader reader = new StringReader("abc" + CsvHelper.COLUMN_SEPARATOR + "def"
                + CsvHelper.LINE_SEPARATOR + "ghi" + CsvHelper.COLUMN_SEPARATOR + "jkl");

        final BufferedReader bufferedReader = new BufferedReader(reader);

        final String[] result1 = CsvHelper.readCsvLine(bufferedReader);

        final String[] result2 = CsvHelper.readCsvLine(bufferedReader);

        assertArrayEquals(result1, "abc", "def");
        assertArrayEquals(result2, "ghi", "jkl");
    }

    protected void assertArrayEquals(String[] actual, String... expected) {

        if (!ArrayUtils.isEquals(actual, expected)) {
            fail("Got: " + ArrayUtils.toString(actual) + " , expected: " + ArrayUtils.toString(expected));
        }
    }
}