sfntly C++ port uses Google testing framework for unit testing.
All test cases are under src/test.
To run the unit test, you need to compile sfntly first, then copy Tuffy.ttf from data/ext to the folder that unit_test(.exe) is located. Run the unit_test.
If you are only interested in one test case, for example, you are working on name table and only wants name editing test, you can use the gtest_filter flag in command line.
unit_test --gtest_filter=NameEditing.*
For more info regarding running a subset of gtest, please see GTest Advanced Guide.
Its strongly suggested to run unit_tests with valgrind. The following example shows a typical test command
valgrind --leak-check=full -v ./unit_test --gtest_filter=*.*-FontData.*
FontData tests are the longest and you may want to bypass them during development. They shall be run in bots, however.