Datasets:
Tasks:
Text Generation
Modalities:
Text
Formats:
json
Languages:
English
Size:
10K - 100K
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File size: 3,367 Bytes
d09f52e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | """Tests for the task framings, especially the key_id determinacy gate."""
import pytest
from harmony_dataset.tasks import render, _key_is_determined
# the brief example: ii7 V7 IM7 in C major
_ARGS = dict(
key="C major",
symbols=["Dm7", "G7", "Cmaj7"],
notes=[["D4", "F4", "A4", "C5"], ["G4", "B4", "D5", "F5"], ["C4", "E4", "G4", "B4"]],
pcs=[[2, 5, 9, 0], [7, 11, 2, 5], [0, 4, 7, 11]],
labels=["ii7", "V7", "IM7"],
cadence="PAC",
)
class TestFormats:
def test_symbol(self):
r = render("symbol_to_rn", **_ARGS)
assert r.input == "key: C major\nprogression: Dm7 G7 Cmaj7"
assert r.target == "ii7 V7 IM7\ncadence: PAC"
def test_notes(self):
r = render("notes_to_rn", **_ARGS)
assert "notes: D4 F4 A4 C5 | G4 B4 D5 F5 | C4 E4 G4 B4" in r.input
def test_pcset(self):
r = render("pcset_to_rn", **_ARGS)
assert "pitch classes: [2 5 9 0] | [7 11 2 5] | [0 4 7 11]" in r.input
def test_unknown_task_raises(self):
with pytest.raises(ValueError):
render("nope", **_ARGS)
class TestKeyIdGate:
def test_determined_case_passes(self):
r = render("key_id", **_ARGS)
assert r is not None
assert r.target == "C major"
assert "key:" not in r.input
def test_smoking_gun_excluded(self):
# I V7/V V in C == IV V7 I in G (note-identical, stronger reading).
# No scale degree 4 (F) anywhere -> key not determined -> excluded.
args = dict(_ARGS)
args.update(
symbols=["C", "D7", "G"],
notes=[["C4", "E4", "G4"], ["D4", "F#4", "A4", "C5"], ["G4", "B4", "D5"]],
pcs=[[0, 4, 7], [2, 6, 9, 0], [7, 11, 2]],
labels=["I", "V7/V", "V"],
cadence="HC",
)
assert render("key_id", **args) is None
def test_plagal_without_leading_tone_excluded(self):
# I IV I in C == V I V in F: ambiguous, no B anywhere.
args = dict(_ARGS)
args.update(
symbols=["C", "F", "C"],
notes=[["C4", "E4", "G4"], ["F4", "A4", "C5"], ["C4", "E4", "G4"]],
pcs=[[0, 4, 7], [5, 9, 0], [0, 4, 7]],
labels=["I", "IV", "I"],
cadence="PC",
)
assert render("key_id", **args) is None
def test_no_cadence_excluded(self):
args = dict(_ARGS, cadence=None)
assert render("key_id", **args) is None
def test_too_short_excluded(self):
args = dict(_ARGS)
args.update(symbols=["G7", "C"], notes=_ARGS["notes"][1:], pcs=_ARGS["pcs"][1:],
labels=["V7", "I"], cadence="PAC")
assert render("key_id", **args) is None
class TestDeterminacyHelper:
def test_tritone_rule(self):
# C major needs F (5) and B (11)
assert _key_is_determined("C major", [[0, 4, 7], [5, 9, 0], [7, 11, 2]])
assert not _key_is_determined("C major", [[0, 4, 7], [7, 11, 2]]) # no F
assert not _key_is_determined("C major", [[0, 4, 7], [5, 9, 0]]) # no B
def test_accidental_keys(self):
# Ab major: degree 4 = Db (1), leading tone = G (7)
assert _key_is_determined("Ab major", [[8, 0, 3], [1, 5, 8], [3, 7, 10]])
# F# minor: degree 4 = B (11), leading tone = E# (5)
assert _key_is_determined("F# minor", [[6, 9, 1], [11, 2, 6], [1, 5, 8]]) |