khodowany
167 lines
10 KiB
Python
167 lines
10 KiB
Python
"""Contextual musical validity needs notes and chords, not author annotations."""
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import dataclasses
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import json
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import fractions
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import pathlib
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import unittest
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import generator.train
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import generator.training_io
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import generator.harmonic_time
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import generator.harmony
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import generator.solo.harmonic
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import generator.solo.types
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import generator.solo.decoder
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import generator.solo.learned
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import generator.source
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import tests.solo_fixtures
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import generator.musicxml
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import generator.parts
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import generator.solo.authored
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ROOT = pathlib.Path(__file__).resolve().parents[1]
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class ContextualHarmony(unittest.TestCase):
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def test_approved_corpus_passes_without_annotations_or_authored_privileges(self):
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examples, _ = generator.train.load_examples(ROOT / 'data/training/manifest.json')
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manifest = json.loads((ROOT / 'data/training/manifest.json').read_text())
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for entry in manifest['examples']:
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raw = generator.training_io.read(ROOT / 'data/training' / entry['solo'], '', pitch_convention=entry['pitch_convention'])
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self.assertEqual(raw['annotations'], [])
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doc = generator.parts.prepare_document(generator.musicxml.load_musicxml(ROOT / 'data/training' / entry['source']))
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h = generator.solo.harmonic.Harmony(generator.harmonic_time.solo_source(doc['staves'][0]))
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ns = tuple(dataclasses.replace(n, role='ordinary', sources=(), event_id='') for n in generator.solo.authored.sounding(raw))
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checked = h.evaluate(ns, complete=True)
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self.assertTrue(checked.valid, (entry['id'], checked.error))
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self.assertTrue(checked.contracts)
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self.assertEqual(len(examples), 4)
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def test_passing_to_nonchord_scale_note(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('G6',)))
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notes = (tests.solo_fixtures.note(0, fractions.Fraction(1, 2), 'g'), tests.solo_fixtures.note(fractions.Fraction(1, 2), 1, 'g', alter=1), tests.solo_fixtures.note(1, 2, 'a'))
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result = h.evaluate(notes)
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self.assertTrue(result.valid, result.error)
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self.assertEqual(result.contracts[0].kind, 'passing')
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self.assertFalse(h.evaluate(notes, infer=False).valid)
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self.assertFalse(h.evaluate(notes[:-1]).valid)
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leap = (*notes[:2], dataclasses.replace(notes[2], pitch=generator.solo.types.Pitch('b', fractions.Fraction(), 4)))
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self.assertFalse(h.evaluate(leap).valid)
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long = (notes[0], dataclasses.replace(notes[1], end=fractions.Fraction(3, 2)), dataclasses.replace(notes[2], start=fractions.Fraction(3, 2)))
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self.assertFalse(h.evaluate(long).valid)
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def test_passing_contract_requires_its_actual_preparation(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('G6',)))
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a = tests.solo_fixtures.note(0, fractions.Fraction(1, 2), 'g', event_id='a')
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b = tests.solo_fixtures.note(fractions.Fraction(1, 2), 1, 'g', alter=1, event_id='b')
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c = tests.solo_fixtures.note(1, 2, 'a', event_id='c')
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contract = generator.solo.types.ExpressionContract('p', 'passing', 'chromatic_passing', (b,), c, 'GM6', preparation=a)
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self.assertTrue(h.evaluate((a, b, c), expressions=(contract,)).valid)
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changed = dataclasses.replace(a, end=fractions.Fraction(1, 4))
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wrong = dataclasses.replace(contract, preparation=changed)
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self.assertFalse(h.evaluate((changed, b, c), expressions=(wrong,)).valid)
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high = dataclasses.replace(c, pitch=dataclasses.replace(c.pitch, octave=5))
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self.assertFalse(h.evaluate((a, b, high), expressions=(dataclasses.replace(contract, target=high),)).valid)
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def test_color_resolution_can_have_intervening_valid_motion(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('C7',)))
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notes = (tests.solo_fixtures.note(0, fractions.Fraction(3, 2), 'f', alter=1), tests.solo_fixtures.note(fractions.Fraction(3, 2), 2, 'a'), tests.solo_fixtures.note(2, 4, 'g'))
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checked = h.evaluate(notes)
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self.assertTrue(checked.valid, checked.error)
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self.assertEqual(checked.contracts[0].rule, 'lydian_color')
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self.assertFalse(h.evaluate(notes[:2]).valid)
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bad_mid = dataclasses.replace(notes[1], pitch=generator.solo.types.Pitch('g', fractions.Fraction(1), 5))
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self.assertFalse(h.evaluate((notes[0], bad_mid, notes[2])).valid)
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def test_anticipated_stable_and_resolving_colors(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('Bbdim7', 'Am7')))
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n = tests.solo_fixtures.note(fractions.Fraction(7, 2), 6, 'd')
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result = h.evaluate((n,))
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self.assertTrue(result.valid, result.error)
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self.assertEqual(result.contracts[0].kind, 'anticipated_color')
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self.assertFalse(h.evaluate((dataclasses.replace(n, start=fractions.Fraction(2)),)).valid)
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('Gm7', 'C7')))
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color = tests.solo_fixtures.note(fractions.Fraction(7, 2), fractions.Fraction(11, 2), 'f', alter=1)
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target = tests.solo_fixtures.note(fractions.Fraction(11, 2), 7, 'g')
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self.assertTrue(h.evaluate((color, target)).valid)
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self.assertFalse(h.evaluate((color,)).valid)
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flat = dataclasses.replace(color, pitch=generator.solo.types.Pitch('g', fractions.Fraction(-1), 4))
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self.assertTrue(h.evaluate((flat, target)).valid)
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def test_repeated_harmony_cannot_reset_color_duration(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('C7', 'C7')))
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color = tests.solo_fixtures.note(3, 6, 'f', alter=1)
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target = tests.solo_fixtures.note(6, 7, 'g')
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self.assertFalse(h.evaluate((color, target)).valid)
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def test_held_color_is_independent_of_notation_partition(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('Bbdim7', 'Am7')))
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whole = tests.solo_fixtures.note(fractions.Fraction(7, 2), 6, 'd')
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split = (dataclasses.replace(whole, end=fractions.Fraction(4)), dataclasses.replace(whole, start=fractions.Fraction(4), continuation=True))
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self.assertEqual(h.evaluate((whole,)), h.evaluate(split))
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self.assertEqual(h.describe((whole,)), h.describe(split))
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def test_unsupported_notes_are_not_authorized_by_labels(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('C7',)))
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for role in ('ordinary', 'authored', 'quote', 'color', 'Lead in'):
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self.assertFalse(h.evaluate((tests.solo_fixtures.note(0, 3, 'c', alter=1, role=role),)).valid)
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missing = generator.solo.harmonic.Harmony(())
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self.assertFalse(missing.evaluate((tests.solo_fixtures.note(0, 1, 'c'),)).valid)
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def test_fully_expired_partial_treatments_remain_invalid(self):
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h = generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(('C7',)))
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notes = (tests.solo_fixtures.note(0, fractions.Fraction(1, 2), 'd', alter=1, event_id='a'), tests.solo_fixtures.note(fractions.Fraction(1, 2), 2, 'e', event_id='b'))
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contract = generator.solo.types.ExpressionContract('a', 'approach', 'below', (notes[0],), notes[1], 'C7')
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partial = h.evaluate(notes[:1], until=fractions.Fraction(1, 2), expressions=(contract,))
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self.assertTrue(partial.valid)
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self.assertEqual(len(partial.pending), 1)
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self.assertFalse(h.evaluate(notes[:1], until=fractions.Fraction(2), expressions=(contract,)).valid)
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def test_pickup_uses_source_form_context_without_overriding_written_harmony(self):
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doc = tests.solo_fixtures.song(count=3, chords=('C', 'Dm', 'G7'))
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staff = doc['staves'][0]
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pickup = staff['measures'][0]
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pickup['implicit'] = True
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pickup['harmonies'] = []
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self.assertEqual(generator.harmony.symbol(generator.harmonic_time.solo_source(staff)[0].chord), 'G7')
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self.assertIsNone(generator.harmonic_time.read(staff)[0].chord)
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pickup['harmonies'] = [dict(generator.harmony.parse_symbol('F'), onset={'numerator': 0, 'denominator': 1})]
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self.assertEqual(generator.harmony.symbol(generator.harmonic_time.solo_source(staff)[0].chord), 'FM')
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pickup['harmonies'] = [{'kind': 'none', 'onset': {'numerator': 0, 'denominator': 1}}]
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self.assertIsNone(generator.harmonic_time.solo_source(staff)[0].chord)
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pickup['harmonies'] = []
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pickup['implicit'] = False
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self.assertIsNone(generator.harmonic_time.solo_source(staff)[0].chord)
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class PredictionReachability(unittest.TestCase):
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def engine(self, chords):
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doc = tests.solo_fixtures.song(count=2, chords=chords)
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return generator.solo.decoder.Decoder(generator.source.analyze(doc), generator.solo.harmonic.Harmony(tests.solo_fixtures.choices(chords)), generator.solo.learned.Model.load(ROOT / 'data/models/solo.json'), 'acoustic', fractions.Fraction(), fractions.Fraction(8))
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def test_joint_resolved_color_reaches_the_real_action_builder(self):
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d = self.engine(('C7', 'FM7'))
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n = d.note(fractions.Fraction(), fractions.Fraction(3, 2), 66)
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actions = list(d.resolutions(n))
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self.assertTrue(any([p for _, _, p in events] == [66, 69, 67] for events, _, _ in actions))
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for _, notes, contracts in actions:
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self.assertTrue(d.harmony.evaluate(notes, expressions=contracts, infer=False).valid)
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def test_anticipated_color_is_a_normal_single_event_option(self):
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d = self.engine(('Bbdim7', 'Am7'))
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n = d.note(fractions.Fraction(7, 2), fractions.Fraction(6), 62)
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support = d.permission(n)
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self.assertTrue(support)
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self.assertEqual(support[0].kind, 'anticipated_color')
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d.expressions_enabled = False
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d._permissions.clear()
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self.assertIsNone(d.permission(n))
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def test_delayed_action_retains_space_and_intervening_motion(self):
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d = self.engine(('C7', 'FM7'))
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n = d.note(fractions.Fraction(), fractions.Fraction(1, 2), 63)
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actions = list(d.resolutions(n))
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self.assertTrue(any(c[0].kind == 'delayed_approach' and any(p is None for _, _, p in events) for events, _, c in actions))
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self.assertTrue(any(c[0].kind == 'delayed_approach' and len(notes) == 3 for _, notes, c in actions))
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def test_passing_action_uses_incoming_state(self):
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d = self.engine(('G6', 'G6'))
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first = d.note(fractions.Fraction(), fractions.Fraction(1, 2), 67)
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state = d.extend(generator.solo.decoder.State(), (((first.start, first.end, 67),), (first,), ()))
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actions = [a for a in d.actions(fractions.Fraction(1, 2)) if a[2] and a[2][0].kind == 'passing'
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and a[0] == ((fractions.Fraction(1, 2), fractions.Fraction(1), 68), (fractions.Fraction(1), fractions.Fraction(2), 69))]
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self.assertTrue(actions)
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self.assertIsNotNone(d.extend(state, actions[0]))
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self.assertIsNone(d.extend(generator.solo.decoder.State(), actions[0]))
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wrong = d.note(fractions.Fraction(), fractions.Fraction(1, 2), 64)
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prior = d.extend(generator.solo.decoder.State(), (((wrong.start, wrong.end, 64),), (wrong,), ()))
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self.assertIsNone(d.extend(prior, actions[0]))
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if __name__ == '__main__':
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unittest.main()
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