static void test(Charset cs, char[] bmpCA, byte[] sbBA) throws Throwable { String bmpStr = new String(bmpCA); CharsetDecoder dec = cs.newDecoder() .onMalformedInput(CodingErrorAction.REPLACE) .onUnmappableCharacter(CodingErrorAction.REPLACE); CharsetEncoder enc = cs.newEncoder() .onMalformedInput(CodingErrorAction.REPLACE) .onUnmappableCharacter(CodingErrorAction.REPLACE); // getBytes(csn); byte[] baSC = bmpStr.getBytes(cs.name()); ByteBuffer bf = enc.reset().encode(CharBuffer.wrap(bmpCA)); byte[] baNIO = new byte[bf.limit()]; bf.get(baNIO, 0, baNIO.length); if (!Arrays.equals(baSC, baNIO)) throw new RuntimeException("getBytes(csn) failed -> " + cs.name()); // getBytes(cs); baSC = bmpStr.getBytes(cs); if (!Arrays.equals(baSC, baNIO)) throw new RuntimeException("getBytes(cs) failed -> " + cs.name()); // new String(csn); String strSC = new String(sbBA, cs.name()); String strNIO = dec.reset().decode(ByteBuffer.wrap(sbBA)).toString(); if (!strNIO.equals(strSC)) throw new RuntimeException("new String(csn) failed -> " + cs.name()); // new String(cs); strSC = new String(sbBA, cs); if (!strNIO.equals(strSC)) throw new RuntimeException("new String(cs) failed -> " + cs.name()); // encode unmappable surrogates if (enc instanceof sun.nio.cs.ArrayEncoder && cs.contains(Charset.forName("ASCII"))) { if (cs.name().equals("UTF-8") || // utf8 handles surrogates cs.name().equals("CESU-8")) // utf8 handles surrogates return; enc.replaceWith(new byte[] {(byte) 'A'}); sun.nio.cs.ArrayEncoder cae = (sun.nio.cs.ArrayEncoder) enc; String str = "ab\uD800\uDC00\uD800\uDC00cd"; byte[] ba = new byte[str.length() - 2]; int n = cae.encode(str.toCharArray(), 0, str.length(), ba); if (n != 6 || !"abAAcd".equals(new String(ba, cs.name()))) throw new RuntimeException("encode1(surrogates) failed -> " + cs.name()); ba = new byte[str.length()]; n = cae.encode(str.toCharArray(), 0, str.length(), ba); if (n != 6 || !"abAAcd".equals(new String(ba, 0, n, cs.name()))) throw new RuntimeException("encode2(surrogates) failed -> " + cs.name()); str = "ab\uD800B\uDC00Bcd"; ba = new byte[str.length()]; n = cae.encode(str.toCharArray(), 0, str.length(), ba); if (n != 8 || !"abABABcd".equals(new String(ba, 0, n, cs.name()))) throw new RuntimeException("encode3(surrogates) failed -> " + cs.name()); /* sun.nio.cs.ArrayDeEncoder works on the assumption that the invoker (StringCoder) allocates enough output buf, utf8 and double-byte coder does not check the output buffer limit. ba = new byte[str.length() - 1]; n = cae.encode(str.toCharArray(), 0, str.length(), ba); if (n != 7 || !"abABABc".equals(new String(ba, 0, n, cs.name()))) { throw new RuntimeException("encode4(surrogates) failed -> " + cs.name()); } */ } }