test/java/util/Base64/Base64GetEncoderTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;

import java.util.Base64;

import static java.nio.charset.StandardCharsets.US_ASCII;

/**
 * @test
 * @bug 8007799
 * @summary test Encoder with linemax == 0, line separator should not appear in encoded data
 */

public class Base64GetEncoderTest {

    public static void main(String args[]) throws Throwable {
        final Base64.Encoder encoder = Base64.getEncoder(0, "$$$".getBytes(US_ASCII));

        testEncodeToString(encoder);

        testWrapEncode1(encoder);

        testEncodeToStringWithLongInputData(encoder);

        testWrapEncode2(encoder);

        testEncodeWithByteBuffer(encoder);

    }

    private static void testEncodeWithByteBuffer(final Base64.Encoder encoder) {
        System.err.println("\n\nEncoder.encode with ByteBuffer test  ");
        final byte[] secondTestBuffer =
                "api/java_util/Base64/index.html#GetEncoderMimeCustom[noLineSeparatorInEncodedString]"
                .getBytes(US_ASCII);
        String base64EncodedString;
        ByteBuffer srcData = ByteBuffer.wrap(secondTestBuffer);
        ByteBuffer dstData = ByteBuffer.allocate(secondTestBuffer.length * 2);

        encoder.encode(srcData, dstData, 0);
        dstData.flip();
        if (dstData.hasArray()) {
            System.err.println("\nByteBuffer test dstData is Base64 encoding = "
                    + new String(dstData.array(), US_ASCII) + "\n");
        }

        base64EncodedString = new String(dstData.array(), US_ASCII);
        if (base64EncodedString.contains("$$$")) {
            throw new RuntimeException("Base64 encoding contains line separator after Encoder.encode ByteBuffer ... \n");
        }
    }

    private static void testWrapEncode2(final Base64.Encoder encoder)
            throws IOException {
        System.err.println("\nEncoder.wrap test II ");
        final byte[] secondTestBuffer =
                "api/java_util/Base64/index.html#GetEncoderMimeCustom[noLineSeparatorInEncodedString]"
                .getBytes(US_ASCII);
        String base64EncodedString;
        ByteArrayOutputStream secondEncodingStream = new ByteArrayOutputStream();
        OutputStream base64EncodingStream = encoder.wrap(secondEncodingStream);
        base64EncodingStream.write(secondTestBuffer);
        base64EncodingStream.close();

        final byte[] encodedByteArray = secondEncodingStream.toByteArray();

        System.err.print("result = " + new String(encodedByteArray, US_ASCII)
                + "  after wrap Base64 encoding of string");

        base64EncodedString = new String(encodedByteArray, US_ASCII);

        if (base64EncodedString.contains("$$$")) {
            throw new RuntimeException(
                    "Base64 encoding contains line separator after wrap 2 invoked  ... \n");
        }
    }

    private static void testEncodeToStringWithLongInputData(
            final Base64.Encoder encoder) {
        System.err.println("\n\nEncoder.encodeToStringWithLongInputData test  ");

        final byte[] secondTestBuffer =
                "api/java_util/Base64/index.html#GetEncoderMimeCustom[noLineSeparatorInEncodedString]"
                .getBytes(US_ASCII);
        String base64EncodedString;
        base64EncodedString = encoder.encodeToString(secondTestBuffer);

        System.err.println("Second Base64 encoded string is "
                + base64EncodedString);

        if (base64EncodedString.contains("$$$")) {
            throw new RuntimeException(
                    "Base64 encoding contains line separator after encodeToString invoked  ... \n");
        }
    }

    private static void testWrapEncode1(final Base64.Encoder encoder)
            throws IOException {
        System.err.println("\nEncoder.wrap test I ");

        final byte[] bytesIn = "fo".getBytes(US_ASCII);
        String base64EncodedString;
        ByteArrayOutputStream encodingStream = new ByteArrayOutputStream();
        OutputStream encoding = encoder.wrap(encodingStream);
        encoding.write(bytesIn);
        encoding.close();

        final byte[] encodedBytes = encodingStream.toByteArray();

        System.err.print("result = " + new String(encodedBytes, US_ASCII)
                + "  after the Base64 encoding \n");

        base64EncodedString = new String(encodedBytes, US_ASCII);

        if (base64EncodedString.contains("$$$")) {
            throw new RuntimeException(
                    "Base64 encoding contains line separator after wrap I test ... \n");
        }
    }

    private static void testEncodeToString(final Base64.Encoder encoder) {
        final byte[] bytesIn = "fo".getBytes(US_ASCII);

        System.err.println("\nEncoder.encodeToString test  ");

        String base64EncodedString = encoder.encodeToString(bytesIn);

        System.err.println("Base64 encoded string is " + base64EncodedString);

        if (base64EncodedString.contains("$$$")) {
            throw new RuntimeException("Base64 encoding contains line separator after Encoder.encodeToString invoked ... \n");
        }
    }
}