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///////////////////////////////////////////////////////////////////////////////
// Name: tests/drawing/testimagefile.h
// Purpose: Functions to test whether the content of files or images files
// are equal
// Author: Armel Asselin
// Created: 2014-02-28
// Copyright: (c) 2014 Ellié Computing <opensource@elliecomputing.com>
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_TESTS_TESTIMAGEFILE_H_
#define _WX_TESTS_TESTIMAGEFILE_H_
bool AreFilesContentsEqual(const wxString &filename, const wxString &refFilename)
{
wxFileInputStream input(filename);
wxFileInputStream refInput(refFilename);
wxFileOffset refLength = refInput.GetLength();
if (refLength != input.GetLength())
return false;
wxUint8 buffer[1024], refBuffer[sizeof(buffer)];
wxFileOffset remainingLength = refLength;
while (remainingLength != 0)
{
input.Read (buffer, wxMin(remainingLength, sizeof(buffer)));
refInput.Read(refBuffer, wxMin(remainingLength, sizeof(refBuffer)));
size_t refLastRead = refInput.LastRead();
if (input.LastRead() != refLastRead)
return false;
if (memcmp (buffer, refBuffer, refLastRead) != 0)
return false;
remainingLength -= refLastRead;
}
return true;
}
#define WX_ASSERT_SAME_AS_FILE(filename1, filename2) \
WX_ASSERT_MESSAGE(\
("Files \"%s\" and \"%s\" differ.",\
filename1, filename2),\
AreFilesContentsEqual(filename1, filename2))
bool AreImagesFilesContentsEqual(const wxString &filename,
const wxString &refFilename)
{
wxImage input(filename);
wxImage refInput(refFilename);
// assertion_traits<wxImage> could do part of the job or maybe the contrary
// there should probably be somethin common at least
if (!input.Ok() || !refInput.Ok())
return false;
if (input.GetSize() != refInput.GetSize())
return false;
if (input.HasAlpha() != refInput.HasAlpha())
return false;
if (input.HasMask() != refInput.HasMask())
return false;
long pixelsCount = input.GetSize().GetWidth() * input.GetSize().GetHeight();
const unsigned char *data = input.GetData();
const unsigned char *refData = refInput.GetData();
if (memcmp (data, refData, pixelsCount*3) != 0)
return false;
if (input.HasAlpha())
{
const unsigned char *alpha = input.GetAlpha();
const unsigned char *refAlpha = refInput.GetAlpha();
if (memcmp (alpha, refAlpha, pixelsCount) != 0)
return false;
}
if (input.HasMask() &&
(input.GetMaskRed() != refInput.GetMaskRed() ||
input.GetMaskGreen() != refInput.GetMaskGreen() ||
input.GetMaskBlue() != refInput.GetMaskBlue()))
return false;
return true;
}
#define WX_ASSERT_SAME_AS_IMAGE_FILE(filename1, filename2) \
WX_ASSERT_MESSAGE(\
("Image files \"%s\" and \"%s\" differ.",\
filename1, filename2),\
AreImagesFilesContentsEqual(filename1, filename2))
#endif // _WX_TESTS_TESTIMAGEFILE_H_
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