Files
PuGa/tests/test_whatif.py
T
dodoxandClaude Sonnet 5 264fbf164b Add tools/whatif.py: marginal ROI of adding to a base you already run
Formalizes a pattern repeated by hand all session: copy the current
whole-base plan, add a building/recipe, diff simulate() against the
baseline for the true marginal profit and capex (not PRUNplanner's
plan-level ROI, which divides whole-plan profit by only the new capex
and badly overstates once a base exists).

Also flags any workforce tier the addition newly overloads, distinct
from a pre-existing overload it didn't cause - this is what caught the
PP2/pioneer-housing and 2nd-CHP/pioneer-housing surprises by hand
before this tool existed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-10-08 10:42:11 +02:00

30 lines
987 B
Python

from pathlib import Path
import sys
sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "tools"))
import whatif
def test_apply_add_reuses_existing_recipe():
spec = {"buildings": [{"building": "POL", "amount": 1, "recipes": ["EPO,PG=>DEC"]}]}
whatif.apply_add(spec, "POL:1")
assert spec["buildings"] == [{"building": "POL", "amount": 2, "recipes": ["EPO,PG=>DEC"]}]
def test_apply_add_new_building_needs_explicit_recipe():
spec = {"buildings": []}
import pytest
with pytest.raises(SystemExit):
whatif.apply_add(spec, "CHP:1")
def test_apply_add_appends_new_building_with_recipe():
spec = {"buildings": []}
whatif.apply_add(spec, "CHP:1:MG,S,CU=>IND")
assert spec["buildings"] == [{"building": "CHP", "amount": 1, "recipes": ["MG,S,CU=>IND"]}]
def test_apply_infra_adds_delta():
spec = {"infrastructure": {"HB1": 4}}
whatif.apply_infra(spec, "HB1:+1,HB2:+2")
assert spec["infrastructure"] == {"HB1": 5, "HB2": 2}