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// SPDX-License-Identifier: BSD-3-Clause
// Copyright Contributors to the OpenColorIO Project.
#ifndef INCLUDED_OCIO_UNITTESTUTILS_H
#define INCLUDED_OCIO_UNITTESTUTILS_H
#include <fstream>
#include <OpenColorIO/OpenColorIO.h>
#include "MathUtils.h"
#include "Op.h"
#include "Platform.h"
#include "pystring.h"
namespace OCIO_NAMESPACE
{
const std::string & GetTestFilesDir();
// Special test function that copies the implementation of FileTransform
// in order to be able to access ops from a file path. fileOps will not be
// finalized and will thus contain NoOps including FileNoOps.
// context can be used to control working directory, search path etc.
void BuildOpsTest(OpRcPtrVec & fileOps,
const std::string & fileName,
ContextRcPtr & context,
TransformDirection dir);
// Create a FileTransform.
FileTransformRcPtr CreateFileTransform(const std::string & fileName);
// Create processor for a given file.
ConstProcessorRcPtr GetFileTransformProcessor(const std::string & fileName);
class CachedFile;
template <class LocalFileFormat, class LocalCachedFile>
OCIO_SHARED_PTR<LocalCachedFile> LoadTestFile(
const std::string & fileName, std::ios_base::openmode mode)
{
const std::string filePath(GetTestFilesDir() + "/" + fileName);
// Open the filePath
std::ifstream filestream;
Platform::OpenInputFileStream(filestream, filePath.c_str(), mode);
if (!filestream.is_open())
{
throw Exception("Error opening test file.");
}
std::string root, extension, name;
pystring::os::path::splitext(root, extension, filePath);
// Read file
LocalFileFormat tester;
OCIO_SHARED_PTR<CachedFile> cachedFile = tester.read(filestream, filePath, INTERP_DEFAULT);
filestream.close();
return DynamicPtrCast<LocalCachedFile>(cachedFile);
}
// Relative comparison: check if the difference between value and expected
// relative to (divided by) expected does not exceed the eps. A minimum
// expected value is used to limit the scaling of the difference and
// avoid large relative differences for small numbers.
template<typename T>
inline bool EqualWithSafeRelError(T value,
T expected,
T eps,
T minExpected)
{
// If value and expected are infinity, return true.
if (value == expected) return true;
if (IsNan(value) && IsNan(expected)) return true;
const T div = (expected > 0) ?
((expected < minExpected) ? minExpected : expected) :
((-expected < minExpected) ? minExpected : -expected);
return (
((value > expected) ? value - expected : expected - value)
/ div) <= eps;
}
}
// namespace OCIO_NAMESPACE
#endif // INCLUDED_OCIO_UNITTESTUTILS_H
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