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irrlicht/tests/testUtils.cpp

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// Copyright (C) 2008-2012 Colin MacDonald
// No rights reserved: this software is in the public domain.
#include "testUtils.h"
#include <memory.h>
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#if defined(_MSC_VER) || defined(_IRR_WINDOWS_API_)
#define _CRT_SECURE_NO_WARNINGS 1
#include <windows.h> // For OutputDebugString()
#endif // _MSC_VER || _IRR_WINDOWS_API_
#ifdef _MSC_VER
#pragma warning( disable: 4996)
#endif
using namespace irr;
bool binaryCompareFiles(const char * fileName1, const char * fileName2)
{
assert(fileName1);
assert(fileName2);
if (!fileName1 || !fileName2)
return false;
FILE * file1 = fopen(fileName1, "rb");
if (!file1)
{
logTestString("binaryCompareFiles: File '%s' cannot be opened\n", fileName1);
assert(file1);
return false;
}
FILE * file2 = fopen(fileName2, "rb");
if (!file2)
{
logTestString("binaryCompareFiles: File '%s' cannot be opened\n", fileName2);
(void)fclose(file1);
assert(file2);
return false;
}
(void)fseek(file1, 0, SEEK_END);
(void)fseek(file2, 0, SEEK_END);
const size_t file1Size = ftell(file1);
const size_t file2Size = ftell(file2);
if (file1Size != file2Size)
{
logTestString("binaryCompareFiles: Files are different sizes: %d vs %d\n",
file1Size, file2Size);
(void)fclose(file1);
(void)fclose(file2);
return false;
}
(void)fseek(file1, 0, SEEK_SET);
(void)fseek(file2, 0, SEEK_SET);
char file1Buffer[8196];
char file2Buffer[8196];
while (!feof(file1))
{
if (feof(file2)
||(fread(file1Buffer, sizeof(file1Buffer), 1, file1) !=
fread(file2Buffer, sizeof(file2Buffer), 1, file2)))
{
logTestString("binaryCompareFiles: Error during file reading\n");
break;
}
if (memcmp(file1Buffer, file2Buffer, sizeof(file1Buffer)))
{
logTestString("binaryCompareFiles: files are different\n");
break;
}
}
bool filesAreIdentical = feof(file1) && feof(file2);
(void)fclose(file1);
(void)fclose(file2);
return filesAreIdentical;
}
bool xmlCompareFiles(irr::io::IFileSystem * fs, const char * fileName1, const char * fileName2)
{
if (!fileName1 || !fileName2)
return false;
io::IXMLReaderUTF8* reader1 = fs->createXMLReaderUTF8(fileName1);
if (!reader1)
{
logTestString("xmlCompareFiles: Could not create a XML reader for '%s'\n", fileName1);
return false;
}
io::IXMLReaderUTF8* reader2 = fs->createXMLReaderUTF8(fileName2);
if (!reader2)
{
logTestString("xmlCompareFiles: Could not create a XML reader for '%s'\n", fileName2);
reader1->drop();
return false;
}
bool different = false;
bool read1 = reader1->read();
bool read2 = reader2->read();
if ( !read1 && !read2 )
{
logTestString("xmlCompareFiles: Both files have no nodes: '%s' %s - is this ok?\n", fileName1, fileName2);
reader1->drop();
reader2->drop();
return true;
}
while (read1 && read2)
{
io::EXML_NODE type1 = reader1->getNodeType();
io::EXML_NODE type2 = reader2->getNodeType();
if ( type1 != type2 )
{
const c8* name1 = reader1->getNodeName();
const c8* name2 = reader2->getNodeName();
logTestString("xmlCompareFiles: file '%s' has different nodes than %s in nodes \"%s\" and \"%s\"\n"
, fileName1, fileName2, name1 ? name1 : "NULL", name2 ? name2 : "NULL");
different = true;
break;
}
if ( reader1->isEmptyElement() != reader2->isEmptyElement() )
{
logTestString("xmlCompareFiles: file '%s' has different empty elements than %s\n", fileName1, fileName2);
different = true;
break;
}
switch ( type1 )
{
case io::EXN_NONE:
case io::EXN_ELEMENT_END:
break;
case io::EXN_ELEMENT:
{
core::stringc name1(reader1->getNodeName());
core::stringc name2(reader2->getNodeName());
if ( name1 != name2 )
{
logTestString("xmlCompareFiles: %s has node %s where %s has node %s\n"
, fileName1, name1.c_str(), fileName2, name2.c_str() );
different = true;
break;
}
unsigned int numAttributes1 = reader1->getAttributeCount();
unsigned int numAttributes2 = reader2->getAttributeCount();
if ( numAttributes1 != numAttributes2 )
{
logTestString("xmlCompareFiles: %s node %s has %d attributes where %s node %s has %d attributes\n"
, fileName1, name1.c_str(), numAttributes1
, fileName2, name2.c_str(), numAttributes2);
different = true;
break;
}
for ( unsigned int i=0; i < numAttributes1; ++i )
{
core::stringc attribName1(reader1->getAttributeName(int(i)));
core::stringc attribName2(reader2->getAttributeName(int(i)));
if ( attribName1 != attribName2 )
{
logTestString("xmlCompareFiles: %s node %s has attribute-name \"%s\" where %s node %s has name \"%s\"\n"
, fileName1, name1.c_str(), attribName1.c_str()
, fileName2, name2.c_str(), attribName2.c_str());
different = true;
break;
}
core::stringc attribVal1(reader1->getAttributeValue(int(i)));
core::stringc attribVal2(reader2->getAttributeValue(int(i)));
if ( attribName1 != attribName2 )
{
logTestString("xmlCompareFiles: %s node %s has attribute-value \"%s\" where %s node %s has value \"%s\"\n"
, fileName1, name1.c_str(), attribVal1.c_str()
, fileName2, name2.c_str(), attribVal2.c_str());
different = true;
break;
}
}
break;
}
case io::EXN_TEXT:
case io::EXN_UNKNOWN:
case io::EXN_COMMENT:
case io::EXN_CDATA:
{
core::stringc nodeData1( reader1->getNodeData() );
core::stringc nodeData2( reader1->getNodeData() );
// removeChars('\r') needed because irrXML doesn't do that (as it probably should)
nodeData1.removeChars(core::stringc('\r'));
nodeData2.removeChars(core::stringc('\r'));
if ( nodeData1 != nodeData2 )
{
logTestString("xmlCompareFiles: %s has data \"%s\" where %s has data \"%s\"\n"
, fileName1, nodeData1.c_str()
, fileName2, nodeData2.c_str());
different = true;
}
break;
}
}
if ( different )
break;
read1 = reader1->read();
read2 = reader2->read();
}
if ( !different && !read1 && !read2 )
{
reader1->drop();
reader2->drop();
return true;
}
if ( !different && read1 )
{
logTestString("xmlCompareFiles: file '%s' has more nodes than %s\n", fileName1, fileName2);
}
if ( !different && read2 )
{
logTestString("xmlCompareFiles: file '%s' has more nodes than %s\n", fileName2, fileName1);
}
reader1->drop();
reader2->drop();
return false;
}
//! Compare two images, returning the degree to which they match.
/** \param image1 The first image to compare.
\param image2 The second image to compare.
\return The match, from 0.f to 100.f */
static float fuzzyCompareImages(irr::video::IImage * image1,
irr::video::IImage * image2)
{
assert(image1);
assert(image2);
if (!image1 || !image2)
return 0.f;
if (image1->getDimension() != image2->getDimension())
{
logTestString("fuzzyCompareImages: images are different sizes\n");
return 0.f;
}
video::ECOLOR_FORMAT format1 = image1->getColorFormat();
if (video::ECF_A8R8G8B8 != format1 && video::ECF_R8G8B8 != format1)
{
logTestString("fuzzyCompareImages: image 1 must be ECF_AR8G8B8 or ECF_R8G8B8\n");
return 0.f;
}
video::ECOLOR_FORMAT format2 = image2->getColorFormat();
if (video::ECF_A8R8G8B8 != format2 && video::ECF_R8G8B8 != format2)
{
logTestString("fuzzyCompareImages: image 2 must be ECF_AR8G8B8 or ECF_R8G8B8\n");
return 0.f;
}
u8 * image1Data = (u8*)image1->getData();
u8 * image2Data = (u8*)image2->getData();
const u32 pixels = (image1->getPitch() * image1->getDimension().Height) / 4;
u32 mismatchedColours = 0;
for (u32 pixel = 0; pixel < pixels; ++pixel)
{
if (video::ECF_A8R8G8B8 == format1)
image1Data++;
const u8 r1 = *(image1Data++);
const u8 g1 = *(image1Data++);
const u8 b1 = *(image1Data++);
if (video::ECF_A8R8G8B8 == format2)
image2Data++;
const u8 r2 = *(image2Data++);
const u8 g2 = *(image2Data++);
const u8 b2 = *(image2Data++);
mismatchedColours += abs(r1 - r2) + abs(g1 - g2) + abs(b1 - b2);
}
const u32 totalColours = pixels * 255*3;
return 100.f * (totalColours - mismatchedColours) / totalColours;
}
//! Compare two images, returning the degree to which they match.
/** \param image1 The first image to compare.
\param image2 The second image to compare.
\return The match, from 0.f to 100.f */
float fuzzyCompareImages(irr::video::IVideoDriver * driver,
const char * fileName1, const char * fileName2)
{
assert(fileName1);
assert(fileName2);
irr::video::IImage * img1 = driver->createImageFromFile(fileName1);
if (!img1)
return 0;
irr::video::IImage * img2 = driver->createImageFromFile(fileName2);
const float result = fuzzyCompareImages(img1, img2);
logTestString("Image match: %f%%\n", result);
img1->drop();
if (img2)
img2->drop();
return result;
}
void stabilizeScreenBackground(irr::video::IVideoDriver * driver,
irr::video::SColor color)
{
for(int i = 0; i < 10000; ++i)
{
driver->beginScene(video::ECBF_COLOR | video::ECBF_DEPTH, color);
driver->endScene();
irr::video::IImage * screenshot = driver->createScreenShot();
if (!screenshot)
return;
const video::ECOLOR_FORMAT format = screenshot->getColorFormat();
if (format != video::ECF_R8G8B8)
{
irr::video::IImage * fixedScreenshot = driver->createImage(video::ECF_R8G8B8, screenshot->getDimension());
screenshot->copyTo(fixedScreenshot);
screenshot->drop();
if (!fixedScreenshot)
return;
screenshot = fixedScreenshot;
}
u8 * image1Data = (u8*)screenshot->getData();
const u32 pixels = (screenshot->getPitch() * screenshot->getDimension().Height) / 4;
bool status = true;
for(u32 pixel = 0; pixel < pixels; ++pixel)
{
const u8 r = *(image1Data++);
const u8 g = *(image1Data++);
const u8 b = *(image1Data++);
if (r != color.getRed() || g != color.getGreen() || b != color.getBlue())
{
status = false;
break;
}
}
if (status)
{
screenshot->drop();
return;
}
screenshot->drop();
}
logTestString("stabilizeScreenBackground failed\n");
}
irr::core::stringc shortDriverName(irr::video::IVideoDriver * driver)
{
irr::core::stringc driverName = driver->getName();
// For OpenGL and Burning, chop the version number out. Other drivers have more stable version numbers.
// TA: Sorry Rogerborg. burnings video also has the version number inside;-)
// maybe you sould take the getDriverType Info for this
if (driverName.find("OpenGL") > -1)
driverName = "OpenGL";
else if (driverName.find("Burning's Video") > -1)
driverName = "Burning's Video";
return driverName;
}
bool takeScreenshotAndCompareAgainstReference(irr::video::IVideoDriver * driver,
const char * fileName,
irr::f32 requiredMatch)
{
irr::video::IImage * screenshot = driver->createScreenShot();
if (!screenshot)
{
logTestString("Failed to take screenshot\n");
assert(false);
return false;
}
const video::ECOLOR_FORMAT format = screenshot->getColorFormat();
if (format != video::ECF_R8G8B8)
{
irr::video::IImage * fixedScreenshot = driver->createImage(video::ECF_R8G8B8, screenshot->getDimension());
screenshot->copyTo(fixedScreenshot);
screenshot->drop();
if (!fixedScreenshot)
{
logTestString("Failed to convert screenshot to ECF_A8R8G8B8\n");
assert(false);
return false;
}
screenshot = fixedScreenshot;
}
irr::core::stringc driverName = shortDriverName(driver);
irr::core::stringc referenceFilename = "media/";
referenceFilename += driverName;
referenceFilename += fileName;
irr::video::IImage * reference = driver->createImageFromFile(referenceFilename.c_str());
if (!reference)
{
logTestString("\n*** Failed to load reference image '%s'\n*** Creating from screenshot - please check this image.\n\n",
referenceFilename.c_str());
(void)driver->writeImageToFile(screenshot, referenceFilename.c_str());
screenshot->drop();
return false;
}
const float match = fuzzyCompareImages(screenshot, reference);
logTestString("Image match: %f%%\n", match);
if (match < requiredMatch)
{
irr::core::stringc mismatchFilename = "results/";
mismatchFilename += driverName;
mismatchFilename += fileName;
logTestString("Writing mismatched image to '%s'\n", mismatchFilename.c_str());
(void)driver->writeImageToFile(screenshot, mismatchFilename.c_str());
}
screenshot->drop();
reference->drop();
return (match >= requiredMatch);
}
static FILE * logFile = 0;
bool openTestLog(bool startNewLog, const char * filename)
{
closeTestLog();
if (startNewLog)
logFile = fopen(filename, "w");
else
logFile = fopen(filename, "a");
assert(logFile);
if (!logFile)
logTestString("\nWARNING: unable to open the test log file %s\n", filename);
return (logFile != 0);
}
void closeTestLog(void)
{
if (logFile)
{
(void)fclose(logFile);
logFile = 0;
}
}
void logTestString(const char * format, ...)
{
char logString[1024];
va_list arguments;
va_start(arguments, format);
vsprintf(logString, format, arguments);
va_end(arguments);
#if defined(_IRR_WINDOWS_API_)
#if defined (_WIN32_WCE )
core::stringw tmp(logString);
tmp += L"\n";
OutputDebugStringW(tmp.c_str());
#else
OutputDebugStringA(logString);
OutputDebugStringA("\n");
#endif
#endif
(void)printf(logString);
if (logFile)
{
(void)fprintf(logFile, logString);
(void)fflush(logFile);
}
#if defined(TESTING_ON_WINDOWS)
OutputDebugStringA(logString);
#endif // #if defined(TESTING_ON_WINDOWS)
}
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