Test encoding and decoding outputs of com.sun.jersey.core.util.Base64 with java.util.Base64

TestEncodingDecoding

import static org.junit.Assert.*;

import com.sun.jersey.core.util.Base64;
import org.junit.Test;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class TestEncodingDecoding {
    List<String> stringsToEncode = Arrays.asList("", " ", "f", "fo", "foo", "foob", "fooba", "foobar", "foobara", "foobaraa");

    // encoded strings using https://www.base64encode.org/
    // Encoded " ", "f", "fo", ... "foobaraa"
    List<String> encodedStringsToDecode = Arrays.asList("IA==", "Zg==", "Zm8=", "Zm9v", "Zm9vYg==", "Zm9vYmE=", "Zm9vYmFy", "Zm9vYmFyYQ==", "Zm9vYmFyYWE=");

    //some urls with special characthers
    String url1 = "https://www.something.com/";
    String url2 = "https://localhost:8080";
    String url3 = "https://www.something.com/processes/{id}";
    String url4 = "https://www.something.com/processes?a=b";
    String url5 = "https://www.something.com/process?a=b&&b=c";
    String url6 = "https://www.something.com/something#tab1";
    String url7 = "https://www.something.com/process/{id}";
    String url8 = "https://www.something.com/process/something-abc";
    String url9 = "https://www.something.com/process?_abc=123";
    String url10 = "https://www.something.com/process?query=abc.123";
    String url11 = "https://www.something.com/process/123/abc.xyz";
    String url12 = "https://[email protected]/process/123/abc.xyz";
    String url13 = "https://localhost:8080?query=<abc>&&filter=aa@bb";
    String url14 = "https://localhost:8080/test?query=abc,xyz";
    String url15 = "https://localhost:8080/abc/abc$456";
    String url16 = "https://localhost:8080/processes/1abc*";
    String url17 = "https://localhost:8080/something?redirect_uri=dXNlcm5hbWU6cGFzc3dvcmQ=";
    String url18 = "https://localhost:8080/something/abc;xyz";
    String url19 = "https://localhost:8080/something?query=abc;xyz**";
    String url20 = "192.168.0.1:8080";
    String url21 = "http://localhost:8080/abc?query=abc123\\lkjasdf";
    String url22 = "http://localhost:8080/abc?query=abc123&&xyz=(lksadf)";
    String url23 = "http://localhost:8080/abc?query=abc123&&xyz=[lksadf]";
    String url24 = "http://localhost:8080/abc?query=abc123&&xyz={lksadf}";
    String url25 = "http://localhost:8080/abc?query=lkajsf\"";
    String url26 = "http://localhost:8080/abc?query=testSingleQuote'asdf";
    String url27 = "http://localhost:8080/abc?query=abc123\\/asdf";
    String url28 = "localhost:8080/abc/< > / \\\\ \\\\\"':;&?@%#";

    List<String> urls = Arrays.asList(
            url1,
            url2,
            url3,
            url4,
            url5,
            url6,
            url7,
            url8,
            url9,
            url10,
            url11,
            url12,
            url13,
            url14,
            url15,
            url16,
            url17,
            url18,
            url19,
            url20,
            url21,
            url22,
            url23,
            url24,
            url25,
            url26,
            url27,
            url28);
    
    @Test
    public void test_encoding_0char_to_8chars_including_empty_and_space() {
        stringsToEncode.forEach(str -> {
            assertTrue(java.util.Base64.getEncoder().encodeToString(str.getBytes()).equals(new String(Base64.encode(str))));
        });
    }

    @Test
    public void test_decoding_0char_to_8chars_including_empty_and_space() {
        encodedStringsToDecode.forEach(encodedStr -> {
            assertTrue(new String(java.util.Base64.getDecoder().decode(encodedStr.getBytes())).equals(new String(Base64.decode(encodedStr))));
        });
    }

    @Test
    public void test_encoding_url_with_special_characters_in_them() {
        urls.forEach(url -> {
            assertTrue(java.util.Base64.getEncoder().encodeToString(url.getBytes()).equals(new String(Base64.encode(url))));
        });
    }

    @Test
    public void test_decoding_url_with_special_characters_in_them() {
        List<String> jerseyBasedEncoding = urls.stream().map(url -> new String(Base64.encode(url))).collect(Collectors.toList());
        List<String> javaUtilBasedEncoding = urls.stream().map(url -> new String(java.util.Base64.getEncoder().encode(url.getBytes())))
                .collect(Collectors.toList());

        jerseyBasedEncoding.stream().forEach(entry -> {
            assertTrue(urls.contains(new String(Base64.decode(entry))));
            assertTrue(urls.contains(new String(java.util.Base64.getDecoder().decode(entry))));
        });

        javaUtilBasedEncoding.stream().forEach(entry -> {
            assertTrue(urls.contains(new String(Base64.decode(entry))));
            assertTrue(urls.contains(new String(java.util.Base64.getDecoder().decode(entry))));
        });
    }

    @Test
    public void test_encode_all_special_chars_in_url() {
        String urlWithSpecialChars = "http://localhost:8080/\\/(){}<>%#$?abc=235^asdf*[]@&-_;,\"'";

        // Used https://www.base64encode.org/
        String encodedUrlWithSpecialChars = "aHR0cDovL2xvY2FsaG9zdDo4MDgwL1wvKCl7fTw+JSMkP2FiYz0yMzVeYXNkZipbXUAmLV87LCIn";
        assertTrue(new String(java.util.Base64.getEncoder().encode(urlWithSpecialChars.getBytes())).equals(new String(Base64.encode(urlWithSpecialChars.getBytes()))));
        assertTrue(new String(java.util.Base64.getDecoder().decode(encodedUrlWithSpecialChars.getBytes())).equals(new String(Base64.decode(encodedUrlWithSpecialChars.getBytes()))));
    }
}