554 lines
19 KiB
C++
554 lines
19 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/streams/zlibstream.cpp
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// Purpose: Test wxZlibInputStream/wxZlibOutputStream
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// Author: Hans Van Leemputten
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// Copyright: (c) 2004 Hans Van Leemputten
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx/wx.h".
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// and "wx/cppunit.h"
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#include "testprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include "wx/zstream.h"
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#include "wx/wfstream.h"
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#include "wx/mstream.h"
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#include "wx/txtstrm.h"
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#include "wx/buffer.h"
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#include "bstream.h"
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using std::string;
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#define DATABUFFER_SIZE 1024
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static const wxString FILENAME_GZ = wxT("zlibtest.gz");
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///////////////////////////////////////////////////////////////////////////////
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// The test case
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//
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// Try to fully test wxZlibInputStream and wxZlibOutputStream
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class zlibStream : public BaseStreamTestCase<wxZlibInputStream, wxZlibOutputStream>
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{
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public:
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zlibStream();
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virtual ~zlibStream();
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CPPUNIT_TEST_SUITE(zlibStream);
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// Base class stream tests the zlibstream supports.
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CPPUNIT_TEST(Input_GetSizeFail);
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CPPUNIT_TEST(Input_GetC);
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CPPUNIT_TEST(Input_Read);
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CPPUNIT_TEST(Input_Eof);
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CPPUNIT_TEST(Input_LastRead);
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CPPUNIT_TEST(Input_CanRead);
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CPPUNIT_TEST(Input_SeekIFail);
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CPPUNIT_TEST(Input_TellI);
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CPPUNIT_TEST(Input_Peek);
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CPPUNIT_TEST(Input_Ungetch);
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CPPUNIT_TEST(Output_PutC);
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CPPUNIT_TEST(Output_Write);
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CPPUNIT_TEST(Output_LastWrite);
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CPPUNIT_TEST(Output_SeekOFail);
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CPPUNIT_TEST(Output_TellO);
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// Other test specific for zlib stream test case.
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CPPUNIT_TEST(TestStream_NoHeader_Default);
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CPPUNIT_TEST(TestStream_NoHeader_NoComp);
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CPPUNIT_TEST(TestStream_NoHeader_SpeedComp);
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CPPUNIT_TEST(TestStream_NoHeader_BestComp);
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CPPUNIT_TEST(TestStream_NoHeader_Dictionary);
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CPPUNIT_TEST(TestStream_ZLib_Default);
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CPPUNIT_TEST(TestStream_ZLib_NoComp);
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CPPUNIT_TEST(TestStream_ZLib_SpeedComp);
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CPPUNIT_TEST(TestStream_ZLib_BestComp);
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CPPUNIT_TEST(TestStream_GZip_Default);
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CPPUNIT_TEST(TestStream_GZip_NoComp);
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CPPUNIT_TEST(TestStream_GZip_SpeedComp);
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CPPUNIT_TEST(TestStream_GZip_BestComp);
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CPPUNIT_TEST(TestStream_GZip_Dictionary);
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CPPUNIT_TEST(TestStream_ZLibGZip);
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CPPUNIT_TEST(Decompress_BadData);
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CPPUNIT_TEST(Decompress_wx251_zlib114_Data_NoHeader);
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CPPUNIT_TEST(Decompress_wx251_zlib114_Data_ZLib);
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CPPUNIT_TEST(Decompress_gzip135Data);
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CPPUNIT_TEST_SUITE_END();
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protected:
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// Test different stream construct settings.
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void TestStream_NoHeader_Default();
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void TestStream_NoHeader_NoComp();
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void TestStream_NoHeader_SpeedComp();
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void TestStream_NoHeader_BestComp();
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void TestStream_NoHeader_Dictionary();
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void TestStream_ZLib_Default();
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void TestStream_ZLib_NoComp();
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void TestStream_ZLib_SpeedComp();
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void TestStream_ZLib_BestComp();
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void TestStream_GZip_Default();
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void TestStream_GZip_NoComp();
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void TestStream_GZip_SpeedComp();
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void TestStream_GZip_BestComp();
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void TestStream_GZip_Dictionary();
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void TestStream_ZLibGZip();
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// Try to decompress bad data.
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void Decompress_BadData();
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// Decompress data that was compress by an external app.
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// (like test wx 2.4.2, 2.5.1 and gzip data)
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// Note: This test is limited in testing range!
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void Decompress_wx251_zlib114_Data_NoHeader();
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void Decompress_wx251_zlib114_Data_ZLib();
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void Decompress_gzip135Data();
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private:
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const char *GetDataBuffer();
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const unsigned char *GetCompressedData();
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void doTestStreamData(int input_flag, int output_flag, int compress_level, const wxMemoryBuffer *buf = NULL);
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void doDecompress_ExternalData(const unsigned char *data, const char *value, size_t data_size, size_t value_size, int flag = wxZLIB_AUTO);
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private:
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// Implement base class functions.
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virtual wxZlibInputStream *DoCreateInStream() wxOVERRIDE;
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virtual wxZlibOutputStream *DoCreateOutStream() wxOVERRIDE;
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virtual void DoDeleteInStream() wxOVERRIDE;
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virtual void DoDeleteOutStream() wxOVERRIDE;
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// Helper that can be used to create new wx compatibility tests...
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// Otherwise not used by the tests.
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void genExtTestData(wxTextOutputStream &out, const char *buf, int flag);
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private:
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char m_DataBuffer[DATABUFFER_SIZE];
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size_t m_SizeCompressedData;
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unsigned char *m_pCompressedData;
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wxMemoryBuffer m_Dictionary;
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// Used by the base Creat[In|Out]Stream and Delete[In|Out]Stream.
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wxMemoryInputStream *m_pTmpMemInStream;
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wxMemoryOutputStream *m_pTmpMemOutStream;
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};
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zlibStream::zlibStream()
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:m_SizeCompressedData(0),
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m_pCompressedData(NULL),
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m_pTmpMemInStream(NULL),
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m_pTmpMemOutStream(NULL)
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{
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// Init the data buffer.
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for (size_t i = 0; i < DATABUFFER_SIZE; i++)
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m_DataBuffer[i] = (i % 0xFF);
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m_Dictionary.AppendData(m_DataBuffer, sizeof(m_DataBuffer) / 2);
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// Set extra base config settings.
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m_bSimpleTellITest = true;
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m_bSimpleTellOTest = true;
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/* Example code on how to produce test data...
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{
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wxFFileOutputStream fstream_out(wxT("gentest.cpp"));
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wxTextOutputStream out( fstream_out );
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genExtTestData(out, "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_NO_HEADER, zlib 1.1.4", wxZLIB_NO_HEADER);
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genExtTestData(out, "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_ZLIB, zlib 1.1.4", wxZLIB_ZLIB);
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}
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*/
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}
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zlibStream::~zlibStream()
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{
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delete[] m_pCompressedData;
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delete m_pTmpMemInStream;
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delete m_pTmpMemOutStream;
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}
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void zlibStream::TestStream_NoHeader_Default()
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{
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doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_DEFAULT_COMPRESSION);
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}
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void zlibStream::TestStream_NoHeader_NoComp()
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{
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doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_NO_COMPRESSION);
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}
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void zlibStream::TestStream_NoHeader_SpeedComp()
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{
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doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_BEST_SPEED);
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}
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void zlibStream::TestStream_NoHeader_BestComp()
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{
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doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_BEST_COMPRESSION);
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}
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void zlibStream::TestStream_NoHeader_Dictionary()
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{
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doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_DEFAULT_COMPRESSION, &m_Dictionary);
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}
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void zlibStream::TestStream_ZLib_Default()
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{
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doTestStreamData(wxZLIB_ZLIB, wxZLIB_ZLIB, wxZ_DEFAULT_COMPRESSION);
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}
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void zlibStream::TestStream_ZLib_NoComp()
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{
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doTestStreamData(wxZLIB_ZLIB, wxZLIB_ZLIB, wxZ_NO_COMPRESSION);
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}
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void zlibStream::TestStream_ZLib_SpeedComp()
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{
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doTestStreamData(wxZLIB_ZLIB, wxZLIB_ZLIB, wxZ_BEST_SPEED);
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}
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void zlibStream::TestStream_ZLib_BestComp()
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{
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doTestStreamData(wxZLIB_ZLIB, wxZLIB_ZLIB, wxZ_BEST_COMPRESSION);
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}
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void zlibStream::TestStream_GZip_Default()
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{
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doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION);
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}
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void zlibStream::TestStream_GZip_NoComp()
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{
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doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_NO_COMPRESSION);
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}
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void zlibStream::TestStream_GZip_SpeedComp()
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{
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doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_BEST_SPEED);
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}
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void zlibStream::TestStream_GZip_BestComp()
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{
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doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_BEST_COMPRESSION);
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}
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void zlibStream::TestStream_GZip_Dictionary()
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{
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doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION, &m_Dictionary);
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}
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void zlibStream::TestStream_ZLibGZip()
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{
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// Only use default compression level, as this test is
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// for testing if the streams can determine the stream type info them self...
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doTestStreamData(wxZLIB_AUTO, wxZLIB_ZLIB, wxZ_DEFAULT_COMPRESSION);
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doTestStreamData(wxZLIB_AUTO, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION);
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}
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void zlibStream::Decompress_BadData()
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{
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// Setup the bad data stream and the zlib stream.
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wxMemoryInputStream memstream_in(GetDataBuffer(), DATABUFFER_SIZE);
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CPPUNIT_ASSERT(memstream_in.IsOk());
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wxZlibInputStream zstream_in(memstream_in);
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CPPUNIT_ASSERT(zstream_in.IsOk()); // We did not yet read from the stream
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// so it should still be OK.
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// Try to force the stream to go to bad status.
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CPPUNIT_ASSERT(!zstream_in.Eof());
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if (zstream_in.IsOk())
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zstream_in.GetC();
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// Because of the bad data in the input stream the zlib
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// stream should be marked as NOT OK.
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CPPUNIT_ASSERT(!zstream_in.IsOk());
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}
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void zlibStream::Decompress_wx251_zlib114_Data_NoHeader()
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{
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const unsigned char data[] = {171,202,201,76,82,72,73,44,73,84,72,46,74,77,44,73,77,81,40,207,44,201,80,40,175,8,207,76,73,79,45,41,86,48,210,51,213,171,80,136,246,77,44,74,206,80,48,50,143,213,1,202,69,249,120,58,197,251,249,199,123,184,58,186,184,6,233,40,84,129,12,49,212,51,212,51,1,0,32};
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const char *value = "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_NO_HEADER, zlib 1.1.4";
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const size_t data_size = sizeof(data);
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const size_t value_size = strlen(value);
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// We need to specify wxZLIB_NO_HEADER because wxZLIB_AUTO can't find it his self.
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doDecompress_ExternalData(data, value, data_size, value_size, wxZLIB_NO_HEADER);
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}
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void zlibStream::Decompress_wx251_zlib114_Data_ZLib()
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{
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const unsigned char data[] = {120,156,171,202,201,76,82,72,73,44,73,84,72,46,74,77,44,73,77,81,40,207,44,201,80,40,175,8,207,76,73,79,45,41,86,48,210,51,213,171,80,136,246,77,44,74,206,80,48,50,143,213,1,202,69,249,120,58,197,131,8,29,133,42,144,126,67,61,67,61,19,0,191,86,23,216};
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const char *value = "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_ZLIB, zlib 1.1.4";
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const size_t data_size = sizeof(data);
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const size_t value_size = strlen(value);
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doDecompress_ExternalData(data, value, data_size, value_size);
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}
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void zlibStream::Decompress_gzip135Data()
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{
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// Compressed data was on the command line with gzip 1.3.5.
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const unsigned char gzip135_data[] = {31,139,8,0,177,248,112,64,4,3,115,206,207,45,40,74,45,46,78,77,81,72,73,44,73,84,72,46,74,77,44,1,114,202,51,75,50,20,220,253,66,21,210,171,50,11,20,12,245,140,245,76,185,0,1,107,16,80,44,0,0,0,0};
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const char *gzip135_value = "Compressed data created with GNU gzip 1.3.5\n";
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// Size of the value and date items.
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const size_t data_size = sizeof(gzip135_data);
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const size_t value_size = strlen(gzip135_value);
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// Perform a generic data test on the data.
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doDecompress_ExternalData(gzip135_data, gzip135_value, data_size, value_size);
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}
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const char *zlibStream::GetDataBuffer()
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{
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return m_DataBuffer;
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}
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const unsigned char *zlibStream::GetCompressedData()
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{
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if (!m_pCompressedData)
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{
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// Construct the compressed data live.
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wxMemoryOutputStream memstream_out;
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{
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const char *buf = "01234567890123456789012345678901234567890123456789"; /* = 50 */
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wxZlibOutputStream zstream_out(memstream_out);
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zstream_out.Write(buf, strlen(buf));
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}
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// Copy the to the
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m_SizeCompressedData = memstream_out.GetSize();
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m_pCompressedData = new unsigned char[m_SizeCompressedData];
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memstream_out.CopyTo(m_pCompressedData, m_SizeCompressedData);
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}
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CPPUNIT_ASSERT(m_pCompressedData != NULL);
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return m_pCompressedData;
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}
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void zlibStream::doTestStreamData(int input_flag, int output_flag, int compress_level, const wxMemoryBuffer *buf)
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{
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size_t fail_pos;
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char last_value = 0;
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bool bWasEOF;
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{ // Part one: Create a compressed file.
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wxFileOutputStream fstream_out(FILENAME_GZ);
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CPPUNIT_ASSERT(fstream_out.IsOk());
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{
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wxZlibOutputStream zstream_out(fstream_out, compress_level, output_flag);
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CPPUNIT_ASSERT_MESSAGE("Could not create the output stream", zstream_out.IsOk());
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if (buf)
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zstream_out.SetDictionary(*buf);
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// Next: Compress some data so the file is containing something.
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zstream_out.Write(GetDataBuffer(), DATABUFFER_SIZE);
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}
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// Next thing is required by zlib versions pre 1.2.0.
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if (input_flag == wxZLIB_NO_HEADER)
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fstream_out.PutC(' ');
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}
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{ // Part two: Verify that the compressed data when uncompressed
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// matches the original data.
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wxFileInputStream fstream_in(FILENAME_GZ);
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CPPUNIT_ASSERT(fstream_in.IsOk());
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wxZlibInputStream zstream_in(fstream_in, input_flag);
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CPPUNIT_ASSERT_MESSAGE("Could not create the input stream", zstream_in.IsOk());
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if (buf)
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zstream_in.SetDictionary(*buf);
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// Next: Check char per char if the returned data is valid.
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const char *pbuf = GetDataBuffer();
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for (fail_pos = 0; !zstream_in.Eof(); fail_pos++)
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{
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last_value = zstream_in.GetC();
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if (zstream_in.LastRead() != 1 ||
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last_value != pbuf[fail_pos])
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break;
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}
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bWasEOF = zstream_in.Eof();
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}
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// Remove the temp file...
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::wxRemoveFile(FILENAME_GZ);
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// Check state of the verify action.
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if (fail_pos != DATABUFFER_SIZE || !bWasEOF)
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{
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wxString msg;
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msg << wxT("Wrong data item at pos ") << fail_pos
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<< wxT(" (Org_val ") << GetDataBuffer()[fail_pos]
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<< wxT(" != Zlib_val ") << last_value
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<< wxT("), with compression level ") << compress_level;
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CPPUNIT_FAIL(string(msg.mb_str()));
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}
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}
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void zlibStream::doDecompress_ExternalData(const unsigned char *data, const char *value, size_t data_size, size_t value_size, int flag)
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{
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// See that the input is ok.
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wxASSERT(data != NULL);
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wxASSERT(value != NULL);
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wxASSERT(data_size > 0);
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wxASSERT(value_size > 0);
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// Quickly try to see if the data is valid.
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switch (flag)
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{
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case wxZLIB_NO_HEADER:
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break;
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case wxZLIB_ZLIB:
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if (!(data_size >= 1 && data[0] == 0x78))
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{
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wxLogError(wxT("zlib data seems to not be zlib data!"));
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}
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break;
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case wxZLIB_GZIP:
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if (!(data_size >= 2 && data[0] == 0x1F && data[1] == 0x8B))
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{
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wxLogError(wxT("gzip data seems to not be gzip data!"));
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}
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break;
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case wxZLIB_AUTO:
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if (!(data_size >= 1 && data[0] == 0x78) ||
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!(data_size >= 2 && data[0] == 0x1F && data[1] == 0x8B))
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{
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wxLogError(wxT("Data seems to not be zlib or gzip data!"));
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}
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break;
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default:
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wxLogError(wxT("Unknown flag, skipping quick test."));
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};
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// Creat the needed streams.
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wxMemoryInputStream memstream_in(data, data_size);
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CPPUNIT_ASSERT(memstream_in.IsOk());
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wxZlibInputStream zstream_in(memstream_in, flag);
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CPPUNIT_ASSERT(zstream_in.IsOk());
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bool bValueEq = true;
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size_t i;
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for (i = 0; !zstream_in.Eof(); i++)
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{
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char last_value = zstream_in.GetC();
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// First check if it is a valid read.
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if (zstream_in.LastRead() == 1)
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{
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// Check the values
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if (last_value != value[i])
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{
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bValueEq = false;
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break;
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}
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}
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else
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{
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// If the read failed and turned the stream to Eof we stop reading.
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if (zstream_in.Eof())
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break;
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CPPUNIT_ASSERT_MESSAGE("Stream is no longer ok!", zstream_in.IsOk());
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}
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// Don't go over the end of the value buffer...
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if (i == value_size)
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{
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// And if we do then try to see how long the stream actually is.
|
|
while (!zstream_in.Eof())
|
|
{
|
|
// Move one item along in the stream.
|
|
(void)zstream_in.GetC();
|
|
i++;
|
|
|
|
// Check if we are in an infinite loop by multiplying value_size
|
|
// by 5 to have a *much* bigger range then the real range.
|
|
// Note: In case you ask yourself, why 5, the answer is no reason...
|
|
// it is not too big and not to small a size, nothing more
|
|
// nothing less to it.
|
|
if (i > (value_size*5))
|
|
{
|
|
// Note: Please make sure Input_Eof test passed.
|
|
CPPUNIT_FAIL("Infinite stream detected, breaking the infinite loop");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
CPPUNIT_ASSERT_EQUAL( i, value_size );
|
|
CPPUNIT_ASSERT( bValueEq );
|
|
}
|
|
|
|
wxZlibInputStream *zlibStream::DoCreateInStream()
|
|
{
|
|
const unsigned char *buf = GetCompressedData();
|
|
m_pTmpMemInStream = new wxMemoryInputStream(buf, m_SizeCompressedData);
|
|
CPPUNIT_ASSERT(m_pTmpMemInStream->IsOk());
|
|
wxZlibInputStream *pzstream_in = new wxZlibInputStream(*m_pTmpMemInStream);
|
|
CPPUNIT_ASSERT(pzstream_in->IsOk());
|
|
return pzstream_in;
|
|
}
|
|
wxZlibOutputStream *zlibStream::DoCreateOutStream()
|
|
{
|
|
m_pTmpMemOutStream = new wxMemoryOutputStream();
|
|
CPPUNIT_ASSERT(m_pTmpMemOutStream->IsOk());
|
|
wxZlibOutputStream *pzstream_out = new wxZlibOutputStream(*m_pTmpMemOutStream);
|
|
CPPUNIT_ASSERT(pzstream_out->IsOk());
|
|
return pzstream_out;
|
|
}
|
|
void zlibStream::DoDeleteInStream()
|
|
{
|
|
delete m_pTmpMemInStream;
|
|
m_pTmpMemInStream = NULL;
|
|
}
|
|
void zlibStream::DoDeleteOutStream()
|
|
{
|
|
delete m_pTmpMemOutStream;
|
|
m_pTmpMemOutStream = NULL;
|
|
}
|
|
|
|
|
|
void zlibStream::genExtTestData(wxTextOutputStream &out, const char *buf, int flag)
|
|
{
|
|
unsigned char *data;
|
|
size_t size;
|
|
|
|
{ // Gen data
|
|
wxMemoryOutputStream memstream_out;
|
|
{
|
|
wxZlibOutputStream zstream_out(memstream_out, wxZ_DEFAULT_COMPRESSION, flag);
|
|
zstream_out.Write(buf, strlen(buf));
|
|
}
|
|
if (flag == wxZLIB_NO_HEADER)
|
|
memstream_out.PutC(' ');
|
|
|
|
size = memstream_out.GetSize();
|
|
data = new unsigned char[size];
|
|
memstream_out.CopyTo(data, size);
|
|
}
|
|
|
|
out << wxT("void zlibStream::Decompress_wxXXXData()") << wxT("\n");
|
|
out << wxT("{") << wxT("\n") << wxT(" const unsigned char data[] = {");
|
|
|
|
size_t i;
|
|
for (i = 0; i < size; i++)
|
|
{
|
|
if (i+1 != size)
|
|
out << wxString::Format(wxT("%d,"), data[i]);
|
|
else
|
|
out << wxString::Format(wxT("%d"), data[i]);
|
|
}
|
|
delete [] data;
|
|
|
|
out << wxT("};") << wxT("\n");
|
|
out << wxT(" const char *value = \"") << wxString(buf, wxConvUTF8) << wxT("\";") << wxT("\n");
|
|
out << wxT(" const size_t data_size = sizeof(data);") << wxT("\n");
|
|
out << wxT(" const size_t value_size = strlen(value);") << wxT("\n");
|
|
out << wxT(" doDecompress_ExternalData(data, value, data_size, value_size);") << wxT("\n");
|
|
out << wxT("}") << wxT("\n");
|
|
}
|
|
|
|
|
|
// Register the stream sub suite, by using some stream helper macro.
|
|
// Note: Don't forget to connect it to the base suite (See: bstream.cpp => StreamCase::suite())
|
|
STREAM_TEST_SUBSUITE_NAMED_REGISTRATION(zlibStream)
|
|
|