def verify(self, t):
v, X = fourier_transform.fourier_transform(t, self.f(t))
self.assertTrue(fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(v), atol=self.atol)
v, X = fourier_transform.fourier_transform(t, self.f(t), sign=-1)
self.assertTrue(fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(-v), atol=self.atol)
v, X = fourier_transform.fourier_transform(t, self.f(t), rw_freq=5)
self.assertTrue(fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(v - 5), atol=self.atol)
def verify(self, t):
v, X = fourier_transform.fourier_transform(t, self.f(t))
self.assertTrue(
fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(v), atol=self.atol)
v, X = fourier_transform.fourier_transform(t, self.f(t), sign=-1)
self.assertTrue(
fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(-v), atol=self.atol)
v, X = fourier_transform.fourier_transform(t, self.f(t), rw_freq=5)
self.assertTrue(
fourier_transform._is_constant(np.diff(v), positive=True))
assert_allclose(X, self.F(v - 5), atol=self.atol)
def test_is_constant():
assert fourier_transform._is_constant([1, 1, 1])
assert fourier_transform._is_constant([-1, -1, -1])
assert not fourier_transform._is_constant([1, 1, 1, 0])
assert not fourier_transform._is_constant([1, 1, 1, 1], positive=False)
assert fourier_transform._is_constant([1, 1, 1, 1], positive=True)
assert fourier_transform._is_constant([-1, -1, -1], positive=False)
assert fourier_transform._is_constant([-1, -1, -1], positive=False)
def test_is_constant():
assert fourier_transform._is_constant([1, 1, 1])
assert fourier_transform._is_constant([-1, -1, -1])
assert not fourier_transform._is_constant([1, 1, 1, 0])
assert not fourier_transform._is_constant([1, 1, 1, 1], positive=False)
assert fourier_transform._is_constant([1, 1, 1, 1], positive=True)
assert fourier_transform._is_constant([-1, -1, -1], positive=False)
assert fourier_transform._is_constant([-1, -1, -1], positive=False)
