def test_export_stl(self):
"""creates an ExtrudeMixedShape and checks that an stl file of the shape can be exported
using the export_stl method"""
test_shape = ExtrudeMixedShape(
points=[
(10, 20, "straight"),
(10, 10, "straight"),
(20, 10, "circle"),
(22, 15, "circle"),
(20, 20, "straight"),
],
distance=10,
)
os.system("rm tests/test.stl")
test_shape.export_stl("tests/test.stl")
assert Path("tests/test.stl").exists() is True
os.system("rm tests/test.stl")
test_shape.export_stl("tests/test")
assert Path("tests/test.stl").exists() is True
os.system("rm tests/test.stl")
class TestExtrudeMixedShape(unittest.TestCase):
def setUp(self):
self.test_shape = ExtrudeMixedShape(points=[(50, 0, "straight"),
(50, 50, "spline"),
(60, 70, "spline"),
(70, 50, "circle"),
(60, 25, "circle"),
(70, 0, "straight")],
distance=50)
def test_default_parameters(self):
"""Checks that the default parameters of an ExtrudeMixedShape are correct."""
assert self.test_shape.rotation_angle == 360
assert self.test_shape.stp_filename == "ExtrudeMixedShape.stp"
assert self.test_shape.stl_filename == "ExtrudeMixedShape.stl"
assert self.test_shape.azimuth_placement_angle == 0
def test_absolute_shape_volume(self):
"""Creates an ExtrudeMixedShape and checks that the volume is correct."""
assert self.test_shape.volume > 20 * 20 * 30
def test_relative_shape_volume(self):
"""Creates two ExtrudeMixedShapes and checks that their relative volumes
are correct."""
test_volume = self.test_shape.volume
self.test_shape.azimuth_placement_angle = [0, 180]
assert self.test_shape.volume == pytest.approx(test_volume * 2,
rel=0.01)
def test_shape_face_areas(self):
"""Creates an ExtrudeMixedShape and checks that the face areas are expected."""
self.test_shape.extrude_both = False
assert len(self.test_shape.areas) == 6
assert len(set([round(i) for i in self.test_shape.areas])) == 5
def test_cut_volume(self):
"""Creates an ExtrudeMixedShape with another ExtrudeMixedShape cut out and
checks that the volume is correct."""
inner_shape = ExtrudeMixedShape(
points=[
(5, 5, "straight"),
(5, 10, "spline"),
(10, 10, "spline"),
(10, 5, "spline"),
],
distance=30,
)
outer_shape = ExtrudeMixedShape(
points=[
(3, 3, "straight"),
(3, 12, "spline"),
(12, 12, "spline"),
(12, 3, "spline"),
],
distance=30,
)
outer_shape_with_cut = ExtrudeMixedShape(
points=[
(3, 3, "straight"),
(3, 12, "spline"),
(12, 12, "spline"),
(12, 3, "spline"),
],
cut=inner_shape,
distance=30,
)
assert inner_shape.volume == pytest.approx(1068, abs=2)
assert outer_shape.volume == pytest.approx(3462, abs=2)
assert outer_shape_with_cut.volume == pytest.approx(3462 - 1068, abs=2)
def test_export_stp_extension(self):
"""Creates an ExtrudeMixedShape and checks that a stp file of the shape
can be exported with the correct suffix using the export_stp method."""
os.system("rm filename.stp filename.step")
self.test_shape.export_stp("filename.stp")
self.test_shape.export_stp("filename.step")
assert Path("filename.stp").exists() is True
assert Path("filename.step").exists() is True
os.system("rm filename.stp filename.step")
self.test_shape.export_stp("filename")
assert Path("filename.stp").exists() is True
os.system("rm filename.stp")
def test_export_stl(self):
"""Creates a ExtrudeMixedShape and checks that a stl file of the shape
can be exported with the correct suffix using the export_stl method."""
os.system("rm filename.stl")
self.test_shape.export_stl("filename.stl")
assert Path("filename.stl").exists() is True
os.system("rm filename.stl")
self.test_shape.export_stl("filename")
assert Path("filename.stl").exists() is True
os.system("rm filename.stl")
def test_rotation_angle(self):
"""Creates an ExtrudeMixedShape with a rotation_angle < 360 and checks that
the correct cut is performed and the volume is correct."""
self.test_shape.azimuth_placement_angle = [45, 135, 225, 315]
test_volume = self.test_shape.volume
self.test_shape.rotation_angle = 180
assert self.test_shape.volume == pytest.approx(test_volume * 0.5,
rel=0.01)
def test_extrude_both(self):
"""Creates an ExtrudeMixedShape with extrude_both = True and False and checks
that the volumes are correct."""
test_volume_extrude_both = self.test_shape.volume
self.test_shape.extrude_both = False
assert self.test_shape.volume == pytest.approx(
test_volume_extrude_both)
def test_export_stp(self):
"""Exports and stp file with mode = solid and wire and checks
that the outputs exist and relative file sizes are correct."""
os.system("rm test_solid.stp test_solid2.stp test_wire.stp")
self.test_shape.export_stp('test_solid.stp', mode='solid')
self.test_shape.export_stp('test_solid2.stp')
self.test_shape.export_stp('test_wire.stp', mode='wire')
assert Path("test_solid.stp").exists() is True
assert Path("test_solid2.stp").exists() is True
assert Path("test_wire.stp").exists() is True
assert Path("test_solid.stp").stat().st_size == \
Path("test_solid2.stp").stat().st_size
assert Path("test_wire.stp").stat().st_size < \
Path("test_solid2.stp").stat().st_size
os.system("rm test_solid.stp test_solid2.stp test_wire.stp")