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test(topostats.measure): Convert test images to fixtures
In starting work on extracting the height profiles now the feret module is in place (see #755) I realised I would need some shapes to test rotation. These already existed as arrays defined in `tests/measure/test_feret.py` and in order to avoid duplication these have been moved to `tests/measure/conftest.py` as fixtures. Because these fixtures are then used in `@pytest.mark.parameterize()` it has necessitated using the `request` fixture and its `.getfixturevalue()` method. A note is left in place for future reference. More on this can be read in [this blog post](https://blog.nshephard.dev/posts/pytest-param/#parameterising-with-fixtures).
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"""Fixtures for testing sub-modules of the measure module.""" | ||
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from __future__ import annotations | ||
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import numpy as np | ||
import numpy.typing as npt | ||
import pytest | ||
from skimage import draw | ||
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# pylint: disable=redefined-outer-name | ||
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@pytest.fixture() | ||
def tiny_circle() -> npt.NDArray: | ||
"""Tiny circle.""" | ||
tiny_circle = np.zeros((3, 3), dtype=np.uint8) | ||
rr, cc = draw.circle_perimeter(1, 1, 1) | ||
tiny_circle[rr, cc] = 1 | ||
return tiny_circle | ||
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@pytest.fixture() | ||
def small_circle() -> npt.NDArray: | ||
"""Small circle.""" | ||
small_circle = np.zeros((5, 5), dtype=np.uint8) | ||
rr, cc = draw.circle_perimeter(2, 2, 2) | ||
small_circle[rr, cc] = 1 | ||
return small_circle | ||
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@pytest.fixture() | ||
def tiny_quadrilateral() -> npt.NDArray: | ||
"""Tiny quadrilateral.""" | ||
return np.asarray( | ||
[ | ||
[0, 0, 0, 0, 0, 0], | ||
[0, 0, 1, 0, 0, 0], | ||
[0, 1, 0, 0, 1, 0], | ||
[0, 0, 0, 0, 0, 0], | ||
[0, 0, 0, 0, 0, 0], | ||
[0, 0, 1, 0, 0, 0], | ||
[0, 0, 0, 0, 0, 0], | ||
], | ||
dtype=np.uint8, | ||
) | ||
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@pytest.fixture() | ||
def tiny_square() -> npt.NDArray: | ||
"""Tiny square.""" | ||
return np.asarray([[0, 0, 0, 0], [0, 1, 1, 0], [0, 1, 1, 0], [0, 0, 0, 0]], dtype=np.uint8) | ||
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@pytest.fixture() | ||
def tiny_triangle() -> npt.NDArray: | ||
"""Tiny triangle.""" | ||
return np.asarray([[0, 0, 0, 0], [0, 1, 1, 0], [0, 1, 0, 0], [0, 0, 0, 0]], dtype=np.uint8) | ||
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@pytest.fixture() | ||
def arbitrary_triangle() -> npt.NDArray: | ||
"""Arbitrary triangle.""" | ||
return np.array([[1.18727719, 2.96140198], [4.14262995, 3.17983179], [6.92472119, 0.64147496]]) | ||
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@pytest.fixture() | ||
def tiny_rectangle() -> npt.NDArray: | ||
"""Tiny rectangle.""" | ||
return np.asarray([[0, 0, 0, 0], [0, 1, 1, 0], [0, 1, 1, 0], [0, 1, 1, 0], [0, 0, 0, 0]], dtype=np.uint8) | ||
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@pytest.fixture() | ||
def tiny_ellipse() -> npt.NDArray: | ||
"""Tiny ellipse.""" | ||
return np.asarray( | ||
[ | ||
[0, 0, 0, 0, 0], | ||
[0, 0, 1, 0, 0], | ||
[0, 1, 0, 1, 0], | ||
[0, 1, 0, 1, 0], | ||
[0, 1, 0, 1, 0], | ||
[0, 0, 1, 0, 0], | ||
[0, 0, 0, 0, 0], | ||
], | ||
dtype=np.uint8, | ||
) | ||
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@pytest.fixture() | ||
def holo_circle() -> npt.NDArray: | ||
"""Holo circle.""" | ||
holo_circle = np.zeros((7, 7), dtype=np.uint8) | ||
rr, cc = draw.circle_perimeter(3, 3, 2) | ||
holo_circle[rr, cc] = 1 | ||
return holo_circle | ||
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@pytest.fixture() | ||
def holo_ellipse_vertical() -> npt.NDArray: | ||
"""Holo ellipse (vertical).""" | ||
holo_ellipse_vertical = np.zeros((11, 9), dtype=np.uint8) | ||
rr, cc = draw.ellipse_perimeter(5, 4, 4, 3) | ||
holo_ellipse_vertical[rr, cc] = 1 | ||
return holo_ellipse_vertical | ||
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@pytest.fixture() | ||
def holo_ellipse_horizontal() -> npt.NDArray: | ||
"""Holo ellipse (horizontal).""" | ||
holo_ellipse_horizontal = np.zeros((9, 11), dtype=np.uint8) | ||
rr, cc = draw.ellipse_perimeter(4, 5, 3, 4) | ||
holo_ellipse_horizontal[rr, cc] = 1 | ||
return holo_ellipse_horizontal | ||
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@pytest.fixture() | ||
def holo_ellipse_angled() -> npt.NDArray: | ||
"""Holo ellipse (angled).""" | ||
holo_ellipse_angled = np.zeros((8, 10), dtype=np.uint8) | ||
rr, cc = draw.ellipse_perimeter(4, 5, 1, 3, orientation=np.deg2rad(30)) | ||
holo_ellipse_angled[rr, cc] = 1 | ||
return holo_ellipse_angled | ||
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@pytest.fixture() | ||
def curved_line() -> npt.NDArray: | ||
"""Curved line.""" | ||
curved_line = np.zeros((10, 10), dtype=np.uint8) | ||
rr, cc = draw.bezier_curve(1, 5, 5, -2, 8, 8, 2) | ||
curved_line[rr, cc] = 1 | ||
return curved_line | ||
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@pytest.fixture() | ||
def filled_circle() -> npt.NDArray: | ||
"""Circle.""" | ||
filled_circle = np.zeros((9, 9), dtype=np.uint8) | ||
rr, cc = draw.disk((4, 4), 4) | ||
filled_circle[rr, cc] = 1 | ||
return filled_circle | ||
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@pytest.fixture() | ||
def filled_ellipse_vertical() -> npt.NDArray: | ||
"""Ellipse (vertical).""" | ||
filled_ellipse_vertical = np.zeros((9, 7), dtype=np.uint8) | ||
rr, cc = draw.ellipse(4, 3, 4, 3) | ||
filled_ellipse_vertical[rr, cc] = 1 | ||
return filled_ellipse_vertical | ||
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@pytest.fixture() | ||
def filled_ellipse_horizontal() -> npt.NDArray: | ||
"""Ellipse (horizontal).""" | ||
filled_ellipse_horizontal = np.zeros((7, 9), dtype=np.uint8) | ||
rr, cc = draw.ellipse(3, 4, 3, 4) | ||
filled_ellipse_horizontal[rr, cc] = 1 | ||
return filled_ellipse_horizontal | ||
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@pytest.fixture() | ||
def filled_ellipse_angled() -> npt.NDArray: | ||
"""Ellipse (angled).""" | ||
filled_ellipse_angled = np.zeros((9, 11), dtype=np.uint8) | ||
rr, cc = draw.ellipse(4, 5, 3, 5, rotation=np.deg2rad(30)) | ||
filled_ellipse_angled[rr, cc] = 1 | ||
return filled_ellipse_angled |
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