def testZero(self):
"""Rotation by an angle of 0 has no effect."""
v = np.array([1, 1, 1], dtype=complex)
vrx = geo.rotX(0).dot(v)
vry = geo.rotY(0).dot(v)
vrz = geo.rotZ(0).dot(v)
self.assertTrue(np.allclose(vrx, v))
self.assertTrue(np.allclose(vry, v))
self.assertTrue(np.allclose(vrz, v))
def testQuarterTurn(self):
"""Rotation by 90 degrees is correct."""
v = np.array([1, 1, 1], dtype=complex)
angle = geo.TAU / 4
vrx = geo.rotX(angle).dot(v)
vry = geo.rotY(angle).dot(v)
vrz = geo.rotZ(angle).dot(v)
vx = np.array([1, -1, 1], dtype=complex)
vy = np.array([1, 1, -1], dtype=complex)
vz = np.array([-1, 1, 1], dtype=complex)
self.assertTrue(np.allclose(vrx, vx))
self.assertTrue(np.allclose(vry, vy))
self.assertTrue(np.allclose(vrz, vz))