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from fontFeatures import Substitution, FontFeatures, Routine
def test_language_ordering():
f = FontFeatures()
s1 = Substitution([["a"]], ["b"], languages=[("arab", "URD ")])
s2 = Substitution([["a"]], ["c"], languages=[("arab", "FAR ")])
s3 = Substitution([["x"], ["y"]], ["z"], languages=[("arab", "URD ")])
f.addFeature("locl", [Routine(rules=[s1, s2, s3])])
# When going to fea, we put everything in its own feature block to
# avoid stupid problems with language systems
expected = """languagesystem arab URD;
languagesystem arab FAR;
lookup Routine_1 {
lookupflag 0;
;
sub a by b;
} Routine_1;
lookup Routine_2 {
lookupflag 0;
;
sub a by c;
} Routine_2;
lookup Routine_3 {
lookupflag 0;
;
sub x y by z;
} Routine_3;
feature locl {
script arab;
language URD;
lookup Routine_1;
} locl;
feature locl {
script arab;
language FAR;
lookup Routine_2;
} locl;
feature locl {
script arab;
language URD;
lookup Routine_3;
} locl;
"""
assert f.asFea(do_gdef=False) == expected
# But the same is true of multiple lookups in the same feature
f = FontFeatures()
r1 = Routine(rules=[s1])
r2 = Routine(rules=[s2])
r3 = Routine(rules=[s3])
f.addFeature("locl", [r1, r2, r3])
assert f.asFea(do_gdef=False) == expected
def test_multiple_languages():
f = FontFeatures()
s1 = Substitution([["a"]], ["b"], languages=[("arab", "URD "), ("arab", "FAR ")])
expected = """languagesystem arab URD;
languagesystem arab FAR;
lookup Routine_1 {
lookupflag 0;
;
sub a by b;
} Routine_1;
lookup Routine_2 {
lookupflag 0;
;
sub a by b;
} Routine_2;
feature locl {
script arab;
language URD;
lookup Routine_1;
} locl;
feature locl {
script arab;
language FAR;
lookup Routine_2;
} locl;
"""
f = FontFeatures()
r1 = Routine(rules=[s1])
f.addFeature("locl", [r1])
assert f.asFea(do_gdef=False) == expected
def test_multiple_languages_routine():
f = FontFeatures()
s1 = Substitution([["a"]], ["b"])
expected = """languagesystem arab URD;
languagesystem arab FAR;
lookup Routine_1 {
lookupflag 0;
;
sub a by b;
} Routine_1;
feature locl {
script arab;
language URD;
lookup Routine_1;
} locl;
feature locl {
script arab;
language FAR;
lookup Routine_1;
} locl;
"""
f = FontFeatures()
r1 = Routine(rules=[s1], languages=[("arab", "URD "), ("arab", "FAR ")])
f.addFeature("locl", [r1])
assert f.asFea(do_gdef=False) == expected
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