/*
 *                    BioJava development code
 *
 * This code may be freely distributed and modified under the
 * terms of the GNU Lesser General Public Licence.  This should
 * be distributed with the code.  If you do not have a copy,
 * see:
 *
 *      http://www.gnu.org/copyleft/lesser.html
 *
 * Copyright for this code is held jointly by the individual
 * authors.  These should be listed in @author doc comments.
 *
 * For more information on the BioJava project and its aims,
 * or to join the biojava-l mailing list, visit the home page
 * at:
 *
 *      http://www.biojava.org/
 *
 */
package org.biojava.bio.program.fastq;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.OutputStream;

import java.util.ArrayList;
import java.util.List;

import junit.framework.TestCase;

/**
 * Abstract unit test for implementations of FastqWriter.
 */
abstract class AbstractFastqWriterTest
    extends TestCase
{

    /**
     * Create and return a new FASTQ formatted sequence suitable for testing.
     *
     * @return a new FASTQ formatted sequence suitable for testing.
     */
    protected abstract Fastq createFastq();

    /**
     * Create and return a new instance of an implementation of FastqWriter to test.
     *
     * @return a new instance of an implementation of FastqWriter to test
     */
    protected abstract FastqWriter createFastqWriter();

    public void testCreateFastq()
    {
        Fastq fastq = createFastq();
        assertNotNull(fastq);
    }

    public void testCreateFastqWriter()
    {
        FastqWriter writer = createFastqWriter();
        assertNotNull(writer);
    }

    public void testAppendVararg() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Appendable appendable = new StringBuilder();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        assertSame(appendable, writer.append(appendable, fastq0));
        assertSame(appendable, writer.append(appendable, fastq0, fastq1));
        assertSame(appendable, writer.append(appendable, fastq0, fastq1, fastq2));
        assertSame(appendable, writer.append(appendable, fastq0, fastq1, fastq2, null));
        assertSame(appendable, writer.append(appendable, (Fastq) null));

        try
        {
            writer.append((Appendable) null, fastq0);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    public void testAppendIterable() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Appendable appendable = new StringBuilder();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        List<Fastq> list = new ArrayList<Fastq>();
        assertSame(appendable, writer.append(appendable, list));
        list.add(fastq0);
        assertSame(appendable, writer.append(appendable, list));
        list.add(fastq1);
        assertSame(appendable, writer.append(appendable, list));
        list.add(fastq2);
        assertSame(appendable, writer.append(appendable, list));
        list.add(null);
        assertSame(appendable, writer.append(appendable, list));

        try
        {
            writer.append((Appendable) null, list);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
        try
        {
            writer.append(appendable, (Iterable<Fastq>) null);
            fail("append(,null) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    public void testWriteFileVararg() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        File file0 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file0, fastq0);
        File file1 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file1, fastq0, fastq1);
        File file2 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file2, fastq0, fastq1, fastq2);
        File file3 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file3, fastq0, fastq1, fastq2, null);
        File file4 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file4, (Fastq) null);

        try
        {
            writer.write((File) null, fastq0);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    public void testWriteFileIterable() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        List<Fastq> list = new ArrayList<Fastq>();
        File file0 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file0, list);

        list.add(fastq0);
        File file1 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file1, list);

        list.add(fastq1);
        File file2 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file2, list);

        list.add(fastq2);
        File file3 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file3, list);

        list.add(null);
        File file4 = File.createTempFile("abstractFastqWriterTest", null);
        writer.write(file4, list);

        File file5 = File.createTempFile("abstractFastqWriterTest", null);

        try
        {
            writer.write((File) null, fastq0);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
        try
        {
            writer.write(file5, (Iterable<Fastq>) null);
            fail("append(,null) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    public void testWriteOutputStreamVararg() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        OutputStream outputStream = new ByteArrayOutputStream();
        writer.write(outputStream, fastq0);
        writer.write(outputStream, fastq0, fastq1);
        writer.write(outputStream, fastq0, fastq1, fastq2);
        writer.write(outputStream, fastq0, fastq1, fastq2, null);
        writer.write(outputStream, (Fastq) null);

        try
        {
            writer.write((OutputStream) null, fastq0);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    public void testWriteOutputStreamIterable() throws Exception
    {
        FastqWriter writer = createFastqWriter();
        Fastq fastq0 = createFastq();
        Fastq fastq1 = createFastq();
        Fastq fastq2 = createFastq();
        OutputStream outputStream = new ByteArrayOutputStream();
        List<Fastq> list = new ArrayList<Fastq>();
        writer.write(outputStream, list);
        list.add(fastq0);
        writer.write(outputStream, list);
        list.add(fastq1);
        writer.write(outputStream, list);
        list.add(fastq2);
        writer.write(outputStream, list);
        list.add(null);
        writer.write(outputStream, list);

        try
        {
            writer.write((OutputStream) null, fastq0);
            fail("append(null,) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
        try
        {
            writer.write(outputStream, (Iterable<Fastq>) null);
            fail("append(,null) expected IllegalArgumentException");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }
}