This task involves auditing the C/C++ tests that are only supported on POSIX and trying to update them to work on Windows. It would be nice to increase our testing coverage on Windows.

Context:

Whilst developing CMake support for WiredTiger on Windows (WT-7535), we discovered a number of the C/C++ testing suite programs that aren't supported on Windows. This is either due to the tests assuming the existence of specific POSIX utilities e.g bash/sh commands, use non-native directory paths e.g. (forward vs backward slash) or they try to include specific Linux/Darwin system headers.

Note some tests may be easy to update (e.g replacing hard-coded bash/sh commands with platform-independent test_util library calls). However I expect some may not be possible to get running on Windows or would require significant re-work outside the scope of this ticket (e.g a test that is heavily depend on pthread functionality).

Below is a summary of the tests that currently don't compile/run on Windows:

test/format
test/readonly
test/salvage
test/syscall (I wouldn't expect its feasible to make this work on Windows)
test/thread
test/cppsuite (C++ compilation currently not tested on Windows)
test/csuite/incr_backup
test/csuite/random_abort
test/csuite/random_directio
test/csuite/rwlock
test/csuite/schema_abort
test/csuite/timestamp_abort
test/csuite/truncated_log
test/csuite/wt1965_col_efficiency
test/csuite/wt2403_lsm_workload
test/csuite/wt2535_insert_race
test/csuite/wt2853_perf
test/csuite/wt2909_checkpoint_integrity
test/csuite/wt3120_filesys
test/csuite/wt3338_partial_update
test/csuite/wt4105_large_doc_small_upd
test/csuite/wt4156_metadata_salvage
test/csuite/wt4333_handle_locks
test/csuite/wt4803_history_store_abort
test/csuite/wt6185_modify_ts
test/csuite/wt6616_checkpoint_oldest_ts

Test format is one of the more interesting ones but the csuites would be good too.

Definition of Done:

• Have some of our POSIX-only C/C++ tests updated to compile and run on Windows. Identify the tests that are not possible to run on Windows.
• Add to evergreen windows variant.