def test_hz_to_cent_wrong_ref_hz_type():
# GIVEN
hz_seq = [440]
ref_hz = "non_numeric"
# WHEN; THEN
with pytest.raises(ValueError) as excinfo:
hz_to_cent(hz_seq, ref_hz)
assert (str(excinfo.value) == 'ref_hz must be a number.')
def test_hz_to_cent_ref_hz_lower_than_20000():
# GIVEN
hz_seq = [440]
ref_hz = 20000.1
# WHEN; THEN
with pytest.raises(ValueError) as excinfo:
hz_to_cent(hz_seq, ref_hz)
assert (str(
excinfo.value) == 'ref_hz must be lower than or equal to 20000 Hz.')
def test_hz_to_cent_wrong_hz_seq_type():
# GIVEN
hz_seq = "non_list_type"
ref_hz = 440
# WHEN; THEN
with pytest.raises(ValueError) as excinfo:
hz_to_cent(hz_seq, ref_hz)
assert (str(
excinfo.value) == 'hz_seq must be a List or numpy array of numbers.')
def test_hz_to_cent_min_hz_lower_than_20():
# GIVEN
hz_seq = [440]
ref_hz = 220
min_hz = 19.99
# WHEN; THEN
with pytest.raises(ValueError) as excinfo:
hz_to_cent(hz_seq, ref_hz, min_hz)
assert (str(
excinfo.value) == 'min_hz must be higher than or equal to 20 Hz.')
def test_hz_to_cent_hz_seq_lower_than_20000():
# GIVEN
hz_seq = [20000.1]
ref_hz = 440
# WHEN; THEN
with pytest.raises(ValueError) as excinfo:
hz_to_cent(hz_seq, ref_hz)
assert (str(
excinfo.value) == 'hz_seq values must be lower than or equal to '
'20000 Hz.')
def test_hz_to_cent_20k_hz_seq_20k_ref_hz():
# GIVEN
hz_seq = [20000]
ref_hz = 20000
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([0])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_hz_seq_two_elements():
# GIVEN
hz_seq = [440, 880]
ref_hz = 440
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([0, 1200])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_hz_seq_half_ref_hz():
# GIVEN
hz_seq = [440]
ref_hz = 880
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([-1200])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_hz_seq_double_ref_hz():
# GIVEN
hz_seq = [880]
ref_hz = 440
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([1200])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_hz_seq_ref_hz_same_numpy():
# GIVEN
hz_seq = np.array([440])
ref_hz = 440
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([0])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_nan_hz_seq():
# GIVEN
hz_seq = [np.nan]
ref_hz = 220
# WHEN
result = hz_to_cent(hz_seq, ref_hz)
# THEN
expected = np.array([np.nan])
np.testing.assert_equal(result, expected)
def test_hz_to_cent_50_hz_seq_25_ref_hz_100_min_hz():
# GIVEN
hz_seq = [50]
ref_hz = 25
min_hz = 100
# WHEN
result = hz_to_cent(hz_seq, ref_hz, min_hz)
# THEN
expected = np.array([np.nan])
np.testing.assert_equal(result, expected)