src/decaf/src/test/decaf/io/BufferedInputStreamTest.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _DECAF_IO_BUFFEREDINPUTSTREAMTEST_H_
#define _DECAF_IO_BUFFEREDINPUTSTREAMTEST_H_

#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>

#include <decaf/io/BufferedInputStream.h>
#include <decaf/util/Config.h>

namespace decaf{
namespace io{

    class BufferedInputStreamTest : public CppUnit::TestFixture {

        CPPUNIT_TEST_SUITE( BufferedInputStreamTest );
        CPPUNIT_TEST( testSmallerBuffer );
        CPPUNIT_TEST( testBiggerBuffer );
        CPPUNIT_TEST_SUITE_END();

    public:

        class MyInputStream : public InputStream{
        private:
            std::string data;
            std::size_t pos;
        public:

            MyInputStream( const std::string& data ){
                this->data = data;
                pos = 0;
            }
            virtual ~MyInputStream(){}

            virtual std::size_t available() const throw (IOException){
                std::size_t len = data.length();
                return len - pos;
            }
            virtual unsigned char read() throw (IOException){
                if( pos >= data.length() ){
                    throw IOException();
                }

                return data.c_str()[pos++];
            }
            virtual int read( unsigned char* buffer, std::size_t bufferSize ) throw (IOException){
                std::size_t numToRead = std::min( bufferSize, available() );

                const char* str = data.c_str();
                for( std::size_t ix=0; ix<numToRead; ++ix ){
                    buffer[ix] = str[pos+ix];
                }

                pos += numToRead;

                return numToRead;
            }

            virtual void close() throw(lang::Exception){
                // do nothing.
            }
            virtual std::size_t skip( std::size_t num DECAF_UNUSED) throw ( io::IOException, lang::exceptions::UnsupportedOperationException ) {
                return 0;
            }

            virtual void lock() throw(lang::Exception){
            }
            virtual void unlock() throw(lang::Exception){
            }
            virtual void wait() throw(lang::Exception){
            }
            virtual void wait(unsigned long millisecs DECAF_UNUSED) throw(lang::Exception){
            }
            virtual void notify() throw(lang::Exception){
            }
            virtual void notifyAll() throw(lang::Exception){
            }
        };

    public:

        virtual ~BufferedInputStreamTest(){}
        virtual void setUp(){}
        virtual void tearDown(){}

        void testSmallerBuffer();
        void testBiggerBuffer();

    };

}}

#endif /*_DECAF_IO_BUFFEREDINPUTSTREAMTEST_H_*/