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