/**
* Main testing method that runs the test based on the passed test spec.
*
* @param testSpec Test-specific routines (providing encoding/decoding streams).
* @throws IOException I/O exception.
*/
protected void test(TestSpec testSpec) throws IOException {
byte[] entity = "Hello world!".getBytes();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStream encoded = testSpec.getEncoded(baos);
encoded.write(entity);
encoded.close();
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
byte[] result = new byte[entity.length];
InputStream decoded = testSpec.getDecoded(bais);
int len = decoded.read(result);
assertEquals(-1, decoded.read());
decoded.close();
assertEquals(entity.length, len);
assertArrayEquals(entity, result);
}
