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Diffstat (limited to 'trunk/BUILDING.txt')
| -rw-r--r-- | trunk/BUILDING.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/trunk/BUILDING.txt b/trunk/BUILDING.txt index 730eaf7..0b3e055 100644 --- a/trunk/BUILDING.txt +++ b/trunk/BUILDING.txt @@ -694,3 +694,30 @@ configuration you built (such as {build_directory}\Debug\ or Building a Windows installer requires the Nullsoft Install System (http://nsis.sourceforge.net/.) makensis.exe should be in your PATH. + + +******************************************************************************* +** Regression testing +******************************************************************************* + +The most common way to test libjpeg-turbo is by invoking 'make test' on +Unix/Linux platforms or 'ctest' on Windows platforms, once the build has +completed. This runs a series of tests to ensure that mathematical +compatibility has been maintained between libjpeg-turbo and libjpeg v6b. This +also invokes the TurboJPEG unit tests, which ensure that the colorspace +extensions, YUV encoding, decompression scaling, and other features of the +TurboJPEG C and Java APIs are working properly (and, by extension, that the +equivalent features of the underlying libjpeg API are also working.) + +Invoking 'make testclean' or 'nmake testclean' (if using NMake) or building +the 'testclean' target (if using the Visual Studio IDE) will clean up the +output images generated by 'make test'. + +On Unix/Linux platforms, more extensive tests of the TurboJPEG/OSS C and Java +wrappers can be run by invoking 'make tjtest'. These extended TurboJPEG tests +essentially iterate through all of the available features of the TurboJPEG APIs +that are not covered by the TurboJPEG unit tests (this includes the lossless +transform options) and compare the images generated by each feature to images +generated using the equivalent feature in the libjpeg API. The extended +TurboJPEG tests are meant to test for regressions in the TurboJPEG wrappers, +not in the underlying libjpeg-turbo library. |