/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */
package test.java.net.URLEncoder;

import java.net.URLDecoder;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

/**
 * @test
 * @bug 8183743
 * @summary Test to verify the new overload method with Charset functions the same
 * as the existing method that takes a charset name.
 * @run testng EncodingTest
 */
public class EncodingTest {

    @DataProvider(name = "encode")
    public Object[][] getDecodeParameters() {
        return new Object[][]{
                {"The string \u00FC@foo-bar"},
                // the string from javadoc example

                {""}, // an empty string

                {"x"}, // a string of length 1

                {"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-.*"},
                // the string of characters should remain the same

                {charactersRange('\u0000', '\u007F')},
                // a string of characters from 0 to 127

                {charactersRange('\u0080', '\u00FF')},
                // a string of characters from 128 to 255

                {"\u0100 \u0101 \u0555 \u07FD \u07FF"},
                // a string of Unicode values can be expressed as 2 bytes

                {"\u8000 \u8001 \uA000 \uFFFD \uFFFF"}, // a string of Unicode values can be expressed as 3 bytes
        };
    }

    /**
     * Verifies that the new overload method returns the same result as the
     * existing method.
     *
     * @param s the string to be encoded
     * @throws Exception if the test fails
     */
    @Test(dataProvider = "encode")
    public void encode(String s) throws Exception {
        String encoded1 = URLEncoder.encode(s, StandardCharsets.UTF_8.name());
        String encoded2 = URLEncoder.encode(s, StandardCharsets.UTF_8);
        Assert.assertEquals(encoded1, encoded2);

        // cross check
        String returned1 = URLDecoder.decode(encoded1, StandardCharsets.UTF_8.name());
        String returned2 = URLDecoder.decode(encoded2, StandardCharsets.UTF_8);
        Assert.assertEquals(returned1, returned2);
    }

    String charactersRange(char c1, char c2) {
        StringBuilder sb = new StringBuilder(c2 - c1);
        for (char c = c1; c < c2; c++) {
            sb.append(c);
        }

        return sb.toString();
    }
}