Testing allocators is difficult as bugs may only surface after particular
allocation patterns. The main approach to testing mimalloc is therefore
to have extensive internal invariant checking (see page_is_valid in page.c
for example), which is enabled in debug mode with -DMI_CHECK_FULL=ON.
The main testing strategy is then to run mimalloc-bench using full
invariant checking to catch any potential problems over a wide range of intensive
allocation benchmarks and programs.
However, this does not test well for the entire API surface and this is tested
with test-api.c when using make test (from out/debug etc). (This is
not complete yet, please add to it.)
The main.c and main-override.c are there to test if building and overriding
from a local install works and therefore these build a separate test/CMakeLists.txt.