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from fontFeatures import Substitution, Routine, FontFeatures
from fontFeatures.optimizer import Optimizer
import unittest
import pytest
pytest.skip("Optimizer is currently broken", allow_module_level=True)
class TestSubstitution(unittest.TestCase):
def test_MergeMultipleSingleSubstitutions_1(self):
r1 = Routine(
rules=[
Substitution([["a", "y"]], [["b", "z"]]),
Substitution([["b", "d", "a"]], [["c", "e", "f"]]),
]
)
Optimizer(FontFeatures()).optimize_routine(r1, level=1)
self.assertEqual(r1.asFea(), " sub [a y b d] by [c z c e];\n")
def test_MergeMultipleSingleSubstitutions_2(self):
r1 = Routine(
rules=[
Substitution([["a"]], [["b"]]),
Substitution([["b"]], [["c"]]),
Substitution([["d"]], [["e"]]),
Substitution([["y"]], [["z"]]),
]
)
Optimizer(FontFeatures()).optimize_routine(r1, level=1)
self.assertEqual(r1.asFea(), " sub [a b d y] by [c c e z];\n")
def test_GlyphClasses(self):
r1 = Routine(
rules=[
Substitution([["a", "b", "c", "d", "e", "f", "g", "h"]], [["z"]]),
]
)
ff = FontFeatures()
Optimizer(ff).optimize_routine(r1, level=1)
self.assertEqual(r1.asFea(), " sub @class1 by z;\n")
self.assertEqual(
ff.namedClasses["class1"], ("a", "b", "c", "d", "e", "f", "g", "h")
)
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