fix(roottest) :- resolve readfile-0 WILLFAIL in treeformula/sync

[Aaravanand00]

Description

Re-enables the readfile-0 TTreeFormula variable synchronization test in roottest/root/treeformula/sync after verifying include paths (-I${CMAKE_SOURCE_DIR}/roottest/root/io/event) and dynamic libTestIoEvent library resolution. Removes the WILLFAIL flag.

[github-actions]

Test Results

    22 files      22 suites   3d 8h 47m 26s ⏱️
 3 847 tests  3 844 ✅ 0 💤  3 ❌
72 922 runs  72 899 ✅ 0 💤 23 ❌

For more details on these failures, see this check.

Results for commit ca6001d.

[guitargeek]

Thanks for the PR, but now it makes no net change: the second commit is a revert of the first. Was that intentional?

[Aaravanand00]

Hi @guitargeek,

After a deeper dive into roottest/root/treeformula/sync/sync.C, I realized that readfile-0 explicitly passes MACROARG 0 to sync(bool skipKnownFail).

This test runs the known TTreeFormula limitation for multidimensional array variable indexing:
tree->Draw("fTracks.fVertex - fTracks.fVertex[][fTracks.fNpoint%3]>>h7")
which fails Compare(h7, h8). The companion test readfile-1 (MACROARG 1) skips this known fail and passes.

Therefore, WILLFAIL on readfile-0 is intentional as an expected failure until the underlying TTreeFormula variable synchronization is overhauled in the ROOT engine. Removing WILLFAIL here is premature, so I will close this PR. Apologies for the noise...