add tests for diffraction methods

[sbillinge]

No description provided.

[sbillinge]

• init (and insert_scattering_quantity)

• set_all_arrays (make private)

• scale_to

• on x_type

• d_to_tth

• tth_to_d

• d_to_q

• q_to_d

[bobleesj]

@sbillinge could you remove

eq
 add
 radd
 sub
 rsub
 mul
 rmul
 truediv
 rtruediv

from this issue? These are provided in this issue: #187 Also, if we could make a small distinction b/w the two issues via title, that would be great.

[sbillinge]

Done. I also removed the methods that I think we are going to kill for making arrays from ranges. I couldn't come up with a good usecase for them because I think the stay had to be set by the y-array so I couldn't think of a time I would actually use that

[bobleesj]

@sbillinge
Shall I make a PR that removes the methods for making arrays from ranges?

[bobleesj]

@sbillinge We have set_all_arrays (make private) left in this issue:

Does the following close this issue? This following code is implemented in the main branch by PR #196:

def test_all_array_getter():
    actual_do = DiffractionObject(
        xarray=np.array([0.0, 90.0, 180.0]),
        yarray=np.array([1.0, 2.0, 3.0]),
        xtype="tth",
        wavelength=4.0 * np.pi,
    )
    expected_all_arrays = np.array(
        [
            [1.0, 0.0, 0.0, np.float64(np.inf)],
            [2.0, 1.0 / np.sqrt(2), 90.0, np.sqrt(2) * 2 * np.pi],
            [3.0, 1.0, 180.0, 1.0 * 2 * np.pi],
        ]
    )
    assert np.allclose(actual_do.all_arrays, expected_all_arrays)


def test_all_array_setter():
    actual_do = DiffractionObject()

    # Attempt to directly modify the property
    with pytest.raises(
        AttributeError,
        match="Direct modification of attribute 'all_arrays' is not allowed. "
        "Please use 'input_data' to modify 'all_arrays'.",
    ):
        actual_do.all_arrays = np.empty((4, 4))