view tests/test-hghave.t @ 18612:0b6e6eacc939

merge: don't call copies.mergecopies unless we need to

This reduces the amount of time we spend calculating when doing a clean
non-merge update. In a large repo, the time dropped from 10.1 seconds
to 3.4.

Testing that hghave does not crash when checking features

  $ "$TESTDIR/hghave" --test-features 2>/dev/null