def test_square(self):
"""Test discrete sampled square wave."""
amp = 0.5
freq = 0.2
duration = 10
times = np.arange(0, duration) + 0.5
square_ref = continuous.square(times, amp=amp, freq=freq)
square_pulse = library.square(duration, amp=amp, freq=freq)
self.assertIsInstance(square_pulse, Waveform)
np.testing.assert_array_almost_equal(square_pulse.samples, square_ref)
# test single cycle
cycle_freq = 1./duration
square_cycle_ref = continuous.square(times, amp=amp, freq=cycle_freq)
square_cycle_pulse = library.square(duration, amp=amp)
np.testing.assert_array_almost_equal(square_cycle_pulse.samples, square_cycle_ref)
def test_square(self):
"""Test square wave."""
amp = 0.5
freq = 0.2
samples = 100
times = np.linspace(0, 10, samples)
square_arr = continuous.square(times, amp=amp, freq=freq)
# with new phase
square_arr_phased = continuous.square(times, amp=amp, freq=freq, phase=np.pi / 2)
self.assertEqual(square_arr.dtype, np.complex_)
self.assertAlmostEqual(square_arr[0], amp)
# test constant
self.assertAlmostEqual(square_arr[1] - square_arr[0], 0.0)
self.assertAlmostEqual(square_arr[25], -amp)
self.assertAlmostEqual(square_arr_phased[0], -amp)
# Assert bounded between -amp and amp
self.assertTrue(np.all((-amp <= square_arr) & (square_arr <= amp)))
self.assertEqual(len(square_arr), samples)
def test_period_deprecation_warning(self):
"""Tests for DeprecationWarning"""
amp = 0.5
period = 5.
samples = 101
times, _ = np.linspace(0, 10, samples, retstep=True)
self.assertWarns(
DeprecationWarning,
lambda: continuous.triangle(times, amp=amp, period=period))
self.assertWarns(
DeprecationWarning,
lambda: continuous.sawtooth(times, amp=amp, period=period))
self.assertWarns(
DeprecationWarning,
lambda: continuous.square(times, amp=amp, period=period))
