def test_d_q_conversion():
assert_equal(2 * np.pi, core.d_to_q(1))
assert_equal(2 * np.pi, core.q_to_d(1))
test_data = np.linspace(.1, 5, 100)
assert_array_almost_equal(test_data, core.d_to_q(core.q_to_d(test_data)),
decimal=12)
assert_array_almost_equal(test_data, core.q_to_d(core.d_to_q(test_data)),
decimal=12)
def smoke_test_powder_standard():
name = 'Si'
cal = calibration_standards[name]
assert(name == cal.name)
for d, hkl, q in cal:
assert_array_almost_equal(d_to_q(d), q)
assert_array_almost_equal(q_to_d(q), d)
assert_array_equal(np.linalg.norm(hkl), hkl.length)
assert_equal(str(cal), "Calibration standard: Si")
assert_equal(len(cal), 11)
