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from fontFeatures import Substitution, FontFeatures, Routine, Chaining, RoutineReference
import pytest
def test_routine_partition():
f = FontFeatures()
s1 = Substitution([["A"]], [["A.grk"]], languages=["grek/*"])
s2 = Substitution([["A"]], [["A.esp"]], languages=["latn/ESP "])
r = Routine(rules=[s1, s2], flags=0x2)
f.routines.append(r)
dummy = Routine(rules=[Substitution([["G"]], [["G"]])])
f.routines.append(dummy)
c = Chaining(
[["A"], ["V"]],
lookups=[
[RoutineReference(routine=dummy), RoutineReference(routine=r)],
[RoutineReference(routine=r), RoutineReference(routine=dummy)],
],
)
r2 = Routine(rules=[c])
f.routines.append(r2)
f.addFeature("locl", [r])
f.partitionRoutine(r, lambda rule: tuple(rule.languages or []))
assert len(f.routines) == 4
assert f.routines[0].flags == f.routines[1].flags
assert len(f.routines[0].rules) == 1
assert len(f.routines[1].rules) == 1
assert f.routines[0].rules[0].replacement[0][0] == "A.grk"
assert f.routines[1].rules[0].replacement[0][0] == "A.esp"
assert len(c.lookups[0]) == 3
assert len(f.features["locl"]) == 2
def test_routine_partition_not_needed():
f = FontFeatures()
s1 = Substitution([["A"]], [["A.grk"]], languages=["grek/*"])
s2 = Substitution([["A"]], [["A.esp"]], languages=["grek/*"])
r = Routine(rules=[s1, s2], flags=0x2)
f.routines.append(r)
f.partitionRoutine(r, lambda rule: tuple(rule.languages or []))
assert len(f.routines) == 1
r.rules = []
f.partitionRoutine(r, lambda rule: tuple(rule.languages or []))
assert len(f.routines) == 1
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