Add wx/meta/removeref.h header defining wxRemoveRef<> helper.

[wxWidgets.git] / tests / streams / zlibstream.cpp

diff --git a/tests/streams/zlibstream.cpp b/tests/streams/zlibstream.cpp
index e437323c1c3614aa21dbbba81f678b2a8c9ff34f..af5fd16cdd9853236f078e22214c362387ceba56 100644 (file)
--- a/tests/streams/zlibstream.cpp
+++ b/tests/streams/zlibstream.cpp
@@ -4,16 +4,12 @@
 // Author:      Hans Van Leemputten
 // RCS-ID:      $Id$
 // Copyright:   (c) 2004 Hans Van Leemputten
 // Author:      Hans Van Leemputten
 // RCS-ID:      $Id$
 // Copyright:   (c) 2004 Hans Van Leemputten

-// Licence:     wxWidgets licence
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 ///////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(__APPLE__)
-    #pragma implementation
-    #pragma interface
-#endif
-

 // For compilers that support precompilation, includes "wx/wx.h".
 // For compilers that support precompilation, includes "wx/wx.h".

-#include "wx/wxprec.h"
+// and "wx/cppunit.h"
+#include "testprec.h"

 
 #ifdef __BORLANDC__
     #pragma hdrstop
 
 #ifdef __BORLANDC__
     #pragma hdrstop


@@ -24,24 +20,27 @@
     #include "wx/wx.h"
 #endif
 
     #include "wx/wx.h"
 #endif
 

-#include "wx/cppunit.h"

 #include "wx/zstream.h"
 #include "wx/wfstream.h"
 #include "wx/mstream.h"
 #include "wx/zstream.h"
 #include "wx/wfstream.h"
 #include "wx/mstream.h"

+#include "wx/txtstrm.h"
+#include "wx/buffer.h"

 
 #include "bstream.h"
 
 
 #include "bstream.h"
 

-using namespace std;
-using namespace CppUnit;
+using std::string;
+
+#define WXTEST_WITH_GZIP_CONDITION(testMethod) \
+    WXTEST_WITH_CONDITION( COMPOSE_TEST_NAME(zlibStream), wxZlibInputStream::CanHandleGZip() && wxZlibOutputStream::CanHandleGZip(), testMethod )

 
 #define DATABUFFER_SIZE 1024
 
 
 #define DATABUFFER_SIZE 1024
 

-static const wxString FILENAME_GZ = _T("zlibtest.gz");
+static const wxString FILENAME_GZ = wxT("zlibtest.gz");

 
 ///////////////////////////////////////////////////////////////////////////////
 // The test case
 //
 
 ///////////////////////////////////////////////////////////////////////////////
 // The test case
 //

-// Try to fully test wxZlibInputStream and wxFileOutputStream
+// Try to fully test wxZlibInputStream and wxZlibOutputStream

 
 class zlibStream : public BaseStreamTestCase<wxZlibInputStream, wxZlibOutputStream>
 {
 
 class zlibStream : public BaseStreamTestCase<wxZlibInputStream, wxZlibOutputStream>
 {


@@ -56,6 +55,7 @@ public:
         CPPUNIT_TEST(Input_Read);
         CPPUNIT_TEST(Input_Eof);
         CPPUNIT_TEST(Input_LastRead);
         CPPUNIT_TEST(Input_Read);
         CPPUNIT_TEST(Input_Eof);
         CPPUNIT_TEST(Input_LastRead);

+        CPPUNIT_TEST(Input_CanRead);

         CPPUNIT_TEST_FAIL(Input_SeekI);
         CPPUNIT_TEST(Input_TellI);
         CPPUNIT_TEST(Input_Peek);
         CPPUNIT_TEST_FAIL(Input_SeekI);
         CPPUNIT_TEST(Input_TellI);
         CPPUNIT_TEST(Input_Peek);


@@ -72,17 +72,21 @@ public:
         CPPUNIT_TEST(TestStream_NoHeader_NoComp);
         CPPUNIT_TEST(TestStream_NoHeader_SpeedComp);
         CPPUNIT_TEST(TestStream_NoHeader_BestComp);
         CPPUNIT_TEST(TestStream_NoHeader_NoComp);
         CPPUNIT_TEST(TestStream_NoHeader_SpeedComp);
         CPPUNIT_TEST(TestStream_NoHeader_BestComp);

+        CPPUNIT_TEST(TestStream_NoHeader_Dictionary);

         CPPUNIT_TEST(TestStream_ZLib_Default);
         CPPUNIT_TEST(TestStream_ZLib_NoComp);
         CPPUNIT_TEST(TestStream_ZLib_SpeedComp);
         CPPUNIT_TEST(TestStream_ZLib_BestComp);
         CPPUNIT_TEST(TestStream_ZLib_Default);
         CPPUNIT_TEST(TestStream_ZLib_NoComp);
         CPPUNIT_TEST(TestStream_ZLib_SpeedComp);
         CPPUNIT_TEST(TestStream_ZLib_BestComp);

-        CPPUNIT_TEST(TestStream_GZip_Default);
-        CPPUNIT_TEST(TestStream_GZip_NoComp);
-        CPPUNIT_TEST(TestStream_GZip_SpeedComp);
-        CPPUNIT_TEST(TestStream_GZip_BestComp);
-        CPPUNIT_TEST(TestStream_ZLibGZip);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_GZip_Default);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_GZip_NoComp);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_GZip_SpeedComp);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_GZip_BestComp);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_GZip_Dictionary);
+        WXTEST_WITH_GZIP_CONDITION(TestStream_ZLibGZip);

         CPPUNIT_TEST(Decompress_BadData);
         CPPUNIT_TEST(Decompress_BadData);

-        CPPUNIT_TEST(Decompress_wx24Data);
+        CPPUNIT_TEST(Decompress_wx251_zlib114_Data_NoHeader);
+        CPPUNIT_TEST(Decompress_wx251_zlib114_Data_ZLib);
+        WXTEST_WITH_GZIP_CONDITION(Decompress_gzip135Data);

     CPPUNIT_TEST_SUITE_END();
 
 protected:
     CPPUNIT_TEST_SUITE_END();
 
 protected:


@@ -91,6 +95,7 @@ protected:
     void TestStream_NoHeader_NoComp();
     void TestStream_NoHeader_SpeedComp();
     void TestStream_NoHeader_BestComp();
     void TestStream_NoHeader_NoComp();
     void TestStream_NoHeader_SpeedComp();
     void TestStream_NoHeader_BestComp();

+    void TestStream_NoHeader_Dictionary();

     void TestStream_ZLib_Default();
     void TestStream_ZLib_NoComp();
     void TestStream_ZLib_SpeedComp();
     void TestStream_ZLib_Default();
     void TestStream_ZLib_NoComp();
     void TestStream_ZLib_SpeedComp();


@@ -99,29 +104,39 @@ protected:
     void TestStream_GZip_NoComp();
     void TestStream_GZip_SpeedComp();
     void TestStream_GZip_BestComp();
     void TestStream_GZip_NoComp();
     void TestStream_GZip_SpeedComp();
     void TestStream_GZip_BestComp();

+    void TestStream_GZip_Dictionary();

     void TestStream_ZLibGZip();
     // Try to decompress bad data.
     void Decompress_BadData();
     void TestStream_ZLibGZip();
     // Try to decompress bad data.
     void Decompress_BadData();

-    // Decompress a data file created with wx 2.4.
+    // Decompress data that was compress by an external app.
+    // (like test wx 2.4.2, 2.5.1 and gzip data)

     // Note: This test is limited in testing range!
     // Note: This test is limited in testing range!

-    void Decompress_wx24Data();
+    void Decompress_wx251_zlib114_Data_NoHeader();
+    void Decompress_wx251_zlib114_Data_ZLib();
+    void Decompress_gzip135Data();

 
 private:
     const char *GetDataBuffer();
     const unsigned char *GetCompressedData();
 
 private:
     const char *GetDataBuffer();
     const unsigned char *GetCompressedData();

-    void doTestStreamData(int input_flag, int output_flag, int compress_level);
+    void doTestStreamData(int input_flag, int output_flag, int compress_level, const wxMemoryBuffer *buf = NULL);
+    void doDecompress_ExternalData(const unsigned char *data, const char *value, size_t data_size, size_t value_size, int flag = wxZLIB_AUTO);

 
 private:
     // Implement base class functions.
 
 private:
     // Implement base class functions.

-    virtual wxZlibInputStream  *DoCreateInStream();  
+    virtual wxZlibInputStream  *DoCreateInStream();

     virtual wxZlibOutputStream *DoCreateOutStream();
     virtual void DoDeleteInStream();
     virtual void DoDeleteOutStream();
 
     virtual wxZlibOutputStream *DoCreateOutStream();
     virtual void DoDeleteInStream();
     virtual void DoDeleteOutStream();
 

+    // Helper that can be used to create new wx compatibility tests...
+    // Otherwise not used by the tests.
+    void genExtTestData(wxTextOutputStream &out, const char *buf, int flag);
+

 private:
     char            m_DataBuffer[DATABUFFER_SIZE];
     size_t          m_SizeCompressedData;
     unsigned char  *m_pCompressedData;
 private:
     char            m_DataBuffer[DATABUFFER_SIZE];
     size_t          m_SizeCompressedData;
     unsigned char  *m_pCompressedData;

+    wxMemoryBuffer  m_Dictionary;

 
     // Used by the base Creat[In|Out]Stream and Delete[In|Out]Stream.
     wxMemoryInputStream  *m_pTmpMemInStream;
 
     // Used by the base Creat[In|Out]Stream and Delete[In|Out]Stream.
     wxMemoryInputStream  *m_pTmpMemInStream;


@@ -138,14 +153,26 @@ zlibStream::zlibStream()
     for (size_t i = 0; i < DATABUFFER_SIZE; i++)
         m_DataBuffer[i] = (i % 0xFF);
 
     for (size_t i = 0; i < DATABUFFER_SIZE; i++)
         m_DataBuffer[i] = (i % 0xFF);
 

+    m_Dictionary.AppendData(m_DataBuffer, sizeof(m_DataBuffer) / 2);
+

     // Set extra base config settings.
     m_bSimpleTellITest = true;
     m_bSimpleTellOTest = true;
     // Set extra base config settings.
     m_bSimpleTellITest = true;
     m_bSimpleTellOTest = true;

+
+/* Example code on how to produce test data...
+    {
+        wxFFileOutputStream fstream_out(wxT("gentest.cpp"));
+        wxTextOutputStream out( fstream_out );
+
+        genExtTestData(out, "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_NO_HEADER, zlib 1.1.4", wxZLIB_NO_HEADER);
+        genExtTestData(out, "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_ZLIB, zlib 1.1.4", wxZLIB_ZLIB);
+    }
+*/

 }
 
 zlibStream::~zlibStream()
 {
 }
 
 zlibStream::~zlibStream()
 {

-    delete m_pCompressedData;
+    delete[] m_pCompressedData;

 
     delete m_pTmpMemInStream;
     delete m_pTmpMemOutStream;
 
     delete m_pTmpMemInStream;
     delete m_pTmpMemOutStream;


@@ -167,6 +194,10 @@ void zlibStream::TestStream_NoHeader_BestComp()
 {
     doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_BEST_COMPRESSION);
 }
 {
     doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_BEST_COMPRESSION);
 }

+void zlibStream::TestStream_NoHeader_Dictionary()
+{
+    doTestStreamData(wxZLIB_NO_HEADER, wxZLIB_NO_HEADER, wxZ_DEFAULT_COMPRESSION, &m_Dictionary);
+}

 
 void zlibStream::TestStream_ZLib_Default()
 {
 
 void zlibStream::TestStream_ZLib_Default()
 {


@@ -201,13 +232,17 @@ void zlibStream::TestStream_GZip_BestComp()
 {
     doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_BEST_COMPRESSION);
 }
 {
     doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_BEST_COMPRESSION);
 }

+void zlibStream::TestStream_GZip_Dictionary()
+{
+    doTestStreamData(wxZLIB_GZIP, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION, &m_Dictionary);
+}

 
 void zlibStream::TestStream_ZLibGZip()
 {
 
 void zlibStream::TestStream_ZLibGZip()
 {

-    // Only use default compression level, as this test is 
+    // Only use default compression level, as this test is

     // for testing if the streams can determine the stream type info them self...
     // for testing if the streams can determine the stream type info them self...

-    doTestStreamData(wxZLIB_ZLIB|wxZLIB_GZIP, wxZLIB_ZLIB, wxZ_DEFAULT_COMPRESSION);
-    doTestStreamData(wxZLIB_ZLIB|wxZLIB_GZIP, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION);
+    doTestStreamData(wxZLIB_AUTO, wxZLIB_ZLIB, wxZ_DEFAULT_COMPRESSION);
+    doTestStreamData(wxZLIB_AUTO, wxZLIB_GZIP, wxZ_DEFAULT_COMPRESSION);

 }
 
 void zlibStream::Decompress_BadData()
 }
 
 void zlibStream::Decompress_BadData()


@@ -216,7 +251,7 @@ void zlibStream::Decompress_BadData()
     wxMemoryInputStream memstream_in(GetDataBuffer(), DATABUFFER_SIZE);
     CPPUNIT_ASSERT(memstream_in.IsOk());
     wxZlibInputStream zstream_in(memstream_in);
     wxMemoryInputStream memstream_in(GetDataBuffer(), DATABUFFER_SIZE);
     CPPUNIT_ASSERT(memstream_in.IsOk());
     wxZlibInputStream zstream_in(memstream_in);

-    CPPUNIT_ASSERT(zstream_in.IsOk()); // We did not yet read from the stream 
+    CPPUNIT_ASSERT(zstream_in.IsOk()); // We did not yet read from the stream

                                        // so it should still be OK.
     // Try to force the stream to go to bad status.
     CPPUNIT_ASSERT(!zstream_in.Eof());
                                        // so it should still be OK.
     // Try to force the stream to go to bad status.
     CPPUNIT_ASSERT(!zstream_in.Eof());


@@ -228,58 +263,36 @@ void zlibStream::Decompress_BadData()
     CPPUNIT_ASSERT(!zstream_in.IsOk());
 }
 
     CPPUNIT_ASSERT(!zstream_in.IsOk());
 }
 

-void zlibStream::Decompress_wx24Data()
+void zlibStream::Decompress_wx251_zlib114_Data_NoHeader()

 {
 {

-    // The wx24_value was used in a wxWidgets 2.4(.2) 
-    // application to produce wx24_data, using wxZlibOutputStream.
-    const unsigned char wx24_data[] = {120,156,242,72,205,201,201,87,40,207,47,202,73,97,0,0,0,0,255,255,0};
-    const char *wx24_value = "Hello world";
-    // Size of the value and date items.
-    const size_t data_size = sizeof(wx24_data);
-    const size_t value_size = strlen(wx24_value);
-
-    const unsigned char *buf = GetCompressedData();
-    m_pTmpMemInStream = new wxMemoryInputStream(buf, m_SizeCompressedData);
-
-    wxMemoryInputStream memstream_in(wx24_data, data_size);
-    CPPUNIT_ASSERT(memstream_in.IsOk());
-    wxZlibInputStream zstream_in(memstream_in);
-    CPPUNIT_ASSERT(zstream_in.IsOk());
-
-    size_t i;
-    for (i = 0; !zstream_in.Eof(); i++)
-    {
-        char last_value = zstream_in.GetC();
-        if (last_value != wx24_value[i])
-            break;
+    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};
+    const char *value = "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_NO_HEADER, zlib 1.1.4";
+    const size_t data_size = sizeof(data);
+    const size_t value_size = strlen(value);
+    // We need to specify wxZLIB_NO_HEADER because wxZLIB_AUTO can't find it his self.
+    doDecompress_ExternalData(data, value, data_size, value_size, wxZLIB_NO_HEADER);
+}

 
 

-        // Don't go over the end of the value buffer...
-        if (wx24_value[i] == '\0')
-        {
-            // And if we do then try to see how long the stream actually is.
-            for (/* nothing */; !zstream_in.Eof(); i++)
-            {
-                // Move one item along in the stream.
-                (void)zstream_in.GetC();
-                
-                // 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: Incase you ask your self, why 5, the answer is no reason... 
-                //       it is not to 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;
-                }
-            }
+void zlibStream::Decompress_wx251_zlib114_Data_ZLib()
+{
+    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};
+    const char *value = "zlib data created with wxWidgets 2.5.x [March 27], wxZLIB_ZLIB, zlib 1.1.4";
+    const size_t data_size = sizeof(data);
+    const size_t value_size = strlen(value);
+    doDecompress_ExternalData(data, value, data_size, value_size);
+}

 
 

-            break;
-        }
-    }
+void zlibStream::Decompress_gzip135Data()
+{
+    // Compressed data was on the command line with gzip 1.3.5.
+    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};
+    const char *gzip135_value = "Compressed data created with GNU gzip 1.3.5\n";
+    // Size of the value and date items.
+    const size_t data_size = sizeof(gzip135_data);
+    const size_t value_size = strlen(gzip135_value);

 
 

-    CPPUNIT_ASSERT_MESSAGE("Could not decompress data that was compressed with wxWidgets 2.4.x", i == (value_size + 1));
+    // Perform a generic data test on the data.
+    doDecompress_ExternalData(gzip135_data, gzip135_value, data_size, value_size);

 }
 
 const char *zlibStream::GetDataBuffer()
 }
 
 const char *zlibStream::GetDataBuffer()


@@ -291,7 +304,6 @@ const unsigned char *zlibStream::GetCompressedData()
 {
     if (!m_pCompressedData)
     {
 {
     if (!m_pCompressedData)
     {

-#if 1

         // Construct the compressed data live.
         wxMemoryOutputStream memstream_out;
         {
         // Construct the compressed data live.
         wxMemoryOutputStream memstream_out;
         {


@@ -300,58 +312,58 @@ const unsigned char *zlibStream::GetCompressedData()
             zstream_out.Write(buf, strlen(buf));
         }
 
             zstream_out.Write(buf, strlen(buf));
         }
 

-        // Copy the to the 
+        // Copy the to the

         m_SizeCompressedData = memstream_out.GetSize();
         m_pCompressedData = new unsigned char[m_SizeCompressedData];
         memstream_out.CopyTo(m_pCompressedData, m_SizeCompressedData);
         m_SizeCompressedData = memstream_out.GetSize();
         m_pCompressedData = new unsigned char[m_SizeCompressedData];
         memstream_out.CopyTo(m_pCompressedData, m_SizeCompressedData);

-#else
-        // Or use recorded compressed data.
-        const unsigned char tmp[] = {120,218,51,48,52,50,54,49,53,51,183,176,52,32,142,197,0,0,3,229,10,9,0};
-        m_SizeCompressedData = sizeof(tmp);
-        m_pCompressedData = new unsigned char[m_SizeCompressedData+1];
-        memcpy(m_pCompressedData, tmp, m_SizeCompressedData);
-#endif

     }
 
     }
 

-    CPPUNIT_ASSERT(m_pCompressedData != NULL);    
+    CPPUNIT_ASSERT(m_pCompressedData != NULL);

     return m_pCompressedData;
 }
 
     return m_pCompressedData;
 }
 

-void zlibStream::doTestStreamData(int input_flag, int output_flag, int compress_level)
+void zlibStream::doTestStreamData(int input_flag, int output_flag, int compress_level, const wxMemoryBuffer *buf)

 {
 {

-    size_t fail_pos = 0;
+    size_t fail_pos;

     char last_value = 0;
     char last_value = 0;

-    bool bWasEOF = true;
+    bool bWasEOF;

 
     {   // Part one: Create a compressed file.
         wxFileOutputStream fstream_out(FILENAME_GZ);
         CPPUNIT_ASSERT(fstream_out.IsOk());
 
     {   // Part one: Create a compressed file.
         wxFileOutputStream fstream_out(FILENAME_GZ);
         CPPUNIT_ASSERT(fstream_out.IsOk());

-        wxZlibOutputStream zstream_out(fstream_out, compress_level, output_flag);
-        if (!zstream_out.IsOk())

         {
         {

-            if (output_flag == wxZLIB_GZIP)
-                CPPUNIT_FAIL("Could not create the gzip output stream. Note: gzip requires zlib 1.2+!");
-            else
-                CPPUNIT_FAIL("Could not create the output stream");
+            wxZlibOutputStream zstream_out(fstream_out, compress_level, output_flag);
+            CPPUNIT_ASSERT_MESSAGE("Could not create the output stream", zstream_out.IsOk());
+
+            if (buf)
+                zstream_out.SetDictionary(*buf);
+
+            // Next: Compress some data so the file is containing something.
+            zstream_out.Write(GetDataBuffer(), DATABUFFER_SIZE);

         }
 
         }
 

-        // Next: Compress some data so the file is containing something.
-        zstream_out.Write(GetDataBuffer(), DATABUFFER_SIZE);
+        // Next thing is required by zlib versions pre 1.2.0.
+        if (input_flag == wxZLIB_NO_HEADER)
+            fstream_out.PutC(' ');

     }
 
     }
 

-    {   // Part two: Verify that the compressed data when uncompressed 
+    {   // Part two: Verify that the compressed data when uncompressed

         //           matches the original data.
         wxFileInputStream fstream_in(FILENAME_GZ);
         CPPUNIT_ASSERT(fstream_in.IsOk());
         wxZlibInputStream zstream_in(fstream_in, input_flag);
         CPPUNIT_ASSERT_MESSAGE("Could not create the input stream", zstream_in.IsOk());
 
         //           matches the original data.
         wxFileInputStream fstream_in(FILENAME_GZ);
         CPPUNIT_ASSERT(fstream_in.IsOk());
         wxZlibInputStream zstream_in(fstream_in, input_flag);
         CPPUNIT_ASSERT_MESSAGE("Could not create the input stream", zstream_in.IsOk());
 

+        if (buf)
+            zstream_in.SetDictionary(*buf);
+

         // Next: Check char per char if the returned data is valid.
         const char *pbuf = GetDataBuffer();
         for (fail_pos = 0; !zstream_in.Eof(); fail_pos++)
         {
             last_value = zstream_in.GetC();
         // Next: Check char per char if the returned data is valid.
         const char *pbuf = GetDataBuffer();
         for (fail_pos = 0; !zstream_in.Eof(); fail_pos++)
         {
             last_value = zstream_in.GetC();

-            if (last_value != pbuf[fail_pos])
+            if (zstream_in.LastRead() != 1 ||
+                last_value != pbuf[fail_pos])

                 break;
         }
 
                 break;
         }
 


@@ -364,14 +376,112 @@ void zlibStream::doTestStreamData(int input_flag, int output_flag, int compress_
     // Check state of the verify action.
     if (fail_pos != DATABUFFER_SIZE || !bWasEOF)
     {
     // Check state of the verify action.
     if (fail_pos != DATABUFFER_SIZE || !bWasEOF)
     {

-        wxString msg(wxString::Format(_T("Wrong data item at pos %d (Org_val %d != Zlib_val %d), with compression level %d"), 
-                                            fail_pos, GetDataBuffer()[fail_pos], last_value, compress_level));
+        wxString msg;
+        msg << wxT("Wrong data item at pos ") << fail_pos
+            << wxT(" (Org_val ") << GetDataBuffer()[fail_pos]
+            << wxT(" != Zlib_val ") << last_value
+            << wxT("), with compression level ") << compress_level;

         CPPUNIT_FAIL(string(msg.mb_str()));
     }
 }
 
         CPPUNIT_FAIL(string(msg.mb_str()));
     }
 }
 

-wxZlibInputStream *zlibStream::DoCreateInStream()    
-{ 
+void zlibStream::doDecompress_ExternalData(const unsigned char *data, const char *value, size_t data_size, size_t value_size, int flag)
+{
+    // See that the input is ok.
+    wxASSERT(data != NULL);
+    wxASSERT(value != NULL);
+    wxASSERT(data_size > 0);
+    wxASSERT(value_size > 0);
+
+    // Quickly try to see if the data is valid.
+    switch (flag)
+    {
+    case wxZLIB_NO_HEADER:
+        break;
+    case wxZLIB_ZLIB:
+        if (!(data_size >= 1 && data[0] == 0x78))
+        {
+            wxLogError(wxT("zlib data seems to not be zlib data!"));
+        }
+        break;
+    case wxZLIB_GZIP:
+        if (!(data_size >= 2 && data[0] == 0x1F && data[1] == 0x8B))
+        {
+            wxLogError(wxT("gzip data seems to not be gzip data!"));
+        }
+        break;
+    case wxZLIB_AUTO:
+        if (!(data_size >= 1 && data[0] == 0x78) ||
+            !(data_size >= 2 && data[0] == 0x1F && data[1] == 0x8B))
+        {
+            wxLogError(wxT("Data seems to not be zlib or gzip data!"));
+        }
+    default:
+        wxLogError(wxT("Unknown flag, skipping quick test."));
+    };
+
+    // Creat the needed streams.
+    wxMemoryInputStream memstream_in(data, data_size);
+    CPPUNIT_ASSERT(memstream_in.IsOk());
+    wxZlibInputStream zstream_in(memstream_in, flag);
+    CPPUNIT_ASSERT(zstream_in.IsOk());
+
+    bool bValueEq = true;
+    size_t i;
+    for (i = 0; !zstream_in.Eof(); i++)
+    {
+        char last_value = zstream_in.GetC();
+
+        // First check if it is a valid read.
+        if (zstream_in.LastRead() == 1)
+        {
+            // Check the values
+            if (last_value != value[i])
+            {
+                bValueEq = false;
+                break;
+            }
+        }
+        else
+        {
+            // If the read failed and turned the stream to Eof we stop reading.
+            if (zstream_in.Eof())
+                break;
+
+            CPPUNIT_ASSERT_MESSAGE("Stream is no longer ok!", zstream_in.IsOk());
+        }
+
+        // Don't go over the end of the value buffer...
+        if (i == value_size)
+        {
+            // 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_MESSAGE("Could not decompress the compressed data, original and restored value did not match.",
+                           i == value_size && bValueEq);
+}
+
+wxZlibInputStream *zlibStream::DoCreateInStream()
+{

     const unsigned char *buf = GetCompressedData();
     m_pTmpMemInStream = new wxMemoryInputStream(buf, m_SizeCompressedData);
     CPPUNIT_ASSERT(m_pTmpMemInStream->IsOk());
     const unsigned char *buf = GetCompressedData();
     m_pTmpMemInStream = new wxMemoryInputStream(buf, m_SizeCompressedData);
     CPPUNIT_ASSERT(m_pTmpMemInStream->IsOk());


@@ -380,24 +490,66 @@ wxZlibInputStream *zlibStream::DoCreateInStream()
     return pzstream_in;
 }
 wxZlibOutputStream *zlibStream::DoCreateOutStream()
     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;
 }
     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()  
-{ 
+void zlibStream::DoDeleteInStream()
+{

     delete m_pTmpMemInStream;
     m_pTmpMemInStream = NULL;
 }
     delete m_pTmpMemInStream;
     m_pTmpMemInStream = NULL;
 }

-void zlibStream::DoDeleteOutStream() 
-{ 
+void zlibStream::DoDeleteOutStream()
+{

     delete m_pTmpMemOutStream;
     m_pTmpMemOutStream = NULL;
 }
 
     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)
 // 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)