Added basic tests for stack and arithmetic IMPs.

[vvhitespace] / tests / 1004_stack_drop.pvvs

# This test verifies stack IMP drop.

SSSTSSSSSTN     | ST: Push +65 (ASCII A)
SSSTSSSSTSN     | ST: Push +66 (ASCII B)
SNN             | ST: Discard TOS
TNSS            | IO: Output character
NNN             | FC: Terminate program