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# vim: set fileencoding=utf-8:
#
# GPIO Zero: a library for controlling the Raspberry Pi's GPIO pins
#
# Copyright (c) 2019-2021 Dave Jones <dave@waveform.org.uk>
#
# SPDX-License-Identifier: BSD-3-Clause
from __future__ import (
unicode_literals,
absolute_import,
print_function,
division,
)
str = type('')
import warnings
from fractions import Fraction
import pytest
from gpiozero.exc import AmbiguousTone
from gpiozero.tones import Tone
@pytest.fixture
def A4(request):
return Tone.from_frequency(440.0)
def test_tone_init(A4):
with warnings.catch_warnings(record=True) as w:
warnings.resetwarnings()
assert Tone(440) == A4
assert Tone("A4") == A4
assert Tone(Fraction(880, 2)) == A4
assert len(w) == 0
assert Tone(69) == A4
assert len(w) == 1
assert Tone(0) != A4
assert len(w) == 1
assert isinstance(w[0].message, AmbiguousTone)
assert Tone(frequency=440) == A4
assert Tone(note="A4") == A4
assert Tone(midi=69) == A4
with pytest.raises(TypeError):
Tone()
with pytest.raises(TypeError):
Tone(foo=1)
with pytest.raises(TypeError):
Tone(frequency=440, midi=69)
with pytest.raises(TypeError):
Tone(440, midi=69)
def test_tone_str(A4):
assert str(A4) == "A4"
assert str(A4.up()) == "A#4"
assert str(A4.down(12)) == "A3"
assert repr(A4) == "<Tone %s midi=69 frequency=440.00Hz>" % ('note=%r' % 'A4')
assert repr(Tone(13000)) == '<Tone frequency=13000.00Hz>'
def test_tone_from_frequency(A4):
assert Tone.from_frequency(440) == A4
assert Tone.from_frequency(440.0) == A4
with pytest.raises(ValueError):
Tone.from_frequency(-100.0)
with pytest.raises(ValueError):
Tone.from_frequency(30000.0)
def test_tone_from_note(A4):
assert Tone.from_note(b"A4") == A4
assert Tone.from_note("A4") == A4
with pytest.raises(ValueError):
Tone.from_note("a4")
with pytest.raises(ValueError):
Tone.from_note("foo")
with pytest.raises(ValueError):
Tone.from_note(0)
def test_tone_from_midi(A4):
assert Tone.from_midi(69) == A4
with pytest.raises(ValueError):
Tone.from_midi(500)
with pytest.raises(ValueError):
Tone.from_midi(-1)
def test_tone_frequency(A4):
assert A4.frequency == 440.0
assert A4.up(12).frequency == 880.0
assert A4.down(12).frequency == 220.0
def test_tone_midi(A4):
assert A4.midi == 69
assert A4.up().midi == 70
assert A4.down().midi == 68
with pytest.raises(ValueError):
Tone.from_frequency(2).midi
with pytest.raises(ValueError):
Tone.from_frequency(15000).midi
def test_tone_note(A4):
assert A4.note == "A4"
assert A4.up().note == "A#4"
assert A4.down().note == "G#4"
with pytest.raises(ValueError):
Tone.from_midi(8).note
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