/*
 *    Geotoolkit.org - An Open Source Java GIS Toolkit
 *    http://www.geotoolkit.org
 *
 *    (C) 2009-2012, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2009-2012, Geomatys
 *
 *    This library 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;
 *    version 2.1 of the License.
 *
 *    This library 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.
 */
package org.geotoolkit.io.wkt;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;

import org.geotoolkit.nio.IOUtilities;
import org.junit.*;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.apache.sis.referencing.CommonCRS;

import static org.geotoolkit.referencing.Assert.*;


/**
 * Tests the {@link PrjFiles} class.
 *
 * @author Martin Desruisseaux (Geomatys)
 * @version 3.15
 *
 * @since 3.05
 */
public final strictfp class PrjFilesTest extends org.geotoolkit.test.TestBase {
    /**
     * The {@code WGS84} CRS as WKT on a single line.
     */
    private static final String WKT = "GEOGCS[\"WGS 84\", " +
            "DATUM[\"World Geodetic System 1984\", SPHEROID[\"WGS 84\", 6378137.0, 298.257223563]], " +
            "PRIMEM[\"Greenwich\", 0.0], UNIT[\"degree\", 0.017453292519943295], " +
            "AXIS[\"Longitude\", EAST], AXIS[\"Latitude\", NORTH], AUTHORITY[\"CRS\", \"84\"]]\n";

    /**
     * Tests the read operation.
     *
     * @throws IOException should not happen.
     */
    @Test
    public void testRead() throws IOException {
        final StringReader in = new StringReader(WKT);
        final CoordinateReferenceSystem crs = PrjFiles.read(new BufferedReader(in), true);
        assertEqualsIgnoreMetadata(CommonCRS.WGS84.normalizedGeographic(), crs, false);
    }

    /**
     * Tests the write operation.
     *
     * @throws IOException should not happen.
     */
    @Test
    public void testWrite() throws IOException {
        final StringWriter out = new StringWriter();
        PrjFiles.write(CommonCRS.WGS84.normalizedGeographic(), out);
        out.close();
        assertEquals(WKT, out.toString());
    }

    /**
     * Tests the write operation.
     *
     * @throws IOException should not happen.
     */
    @Test
    public void testWriteInPath() throws IOException {
        Path tmpPRJ = Files.createTempFile(null, ".prj");
        try {
            PrjFiles.write(CommonCRS.WGS84.normalizedGeographic(), tmpPRJ);
            assertTrue(Files.exists(tmpPRJ));
            assertTrue(Files.size(tmpPRJ) > 0);
            assertEquals(WKT, IOUtilities.toString(tmpPRJ));
        } finally {
            Files.deleteIfExists(tmpPRJ);
        }
    }
}