File s2/unit/002-000-eval.s2 artifact 075e59f7ff part of check-in 860f151edd

assert 3 === eval {1 * 3};
assert '3 + 1' === "3 + 1";
assert '3 + 1' === eval "3 + 1";
assert 4 === eval -> "3 + 1";
assert eval {2+2} === eval -> "3 + 1";