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# Copyright (c) 2021, Manfred Moitzi
# License: MIT License
import pytest
import ezdxf
from ezdxf.lldxf import const
from ezdxf.math import (
required_fit_points,
required_control_points,
required_knot_values,
uniform_knot_vector,
)
from ezdxf.audit import Auditor, AuditError
@pytest.fixture(scope="module")
def doc():
return ezdxf.new()
@pytest.fixture
def auditor(doc):
return Auditor(doc)
@pytest.fixture
def spline(doc):
msp = doc.modelspace()
return msp.add_spline()
@pytest.mark.parametrize(
"order, expected", [(0, 2), (1, 2), (2, 2), (3, 3), (4, 4), (5, 5)]
)
def test_required_fit_points_without_given_end_tangents(order, expected):
assert required_fit_points(order, tangents=False) == expected
@pytest.mark.parametrize(
"order, expected", [(0, 2), (1, 2), (2, 2), (3, 2), (4, 2), (5, 3)]
)
def test_required_fit_points_with_given_end_tangents(order, expected):
assert required_fit_points(order, tangents=True) == expected
@pytest.mark.parametrize(
"order, expected",
[
(0, 2),
(1, 2),
(2, 2),
(3, 3),
(4, 4),
],
)
def test_required_control_points_calculation(order, expected):
assert required_control_points(order) == expected
def test_any_points_present(auditor, spline):
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert auditor.fixes[0].code == AuditError.INVALID_SPLINE_DEFINITION
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
def test_degree_of_spline(auditor, spline):
# Attribute validator prevents setting an invalid degree:
with pytest.raises(const.DXFValueError):
spline.dxf.degree = 0
# But could be loaded from DXF file:
# Hack to test entity validator for degree < 1
spline.dxf.__dict__["degree"] = 0
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert auditor.fixes[0].code == AuditError.INVALID_SPLINE_DEFINITION
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
def add_n_fit_points(s, count: int):
for x in range(count):
s.fit_points.append([x, 0, 0])
class TestFitPoints:
@pytest.mark.parametrize("degree", [1, 2, 3, 4])
def test_if_fit_point_count_is_valid(self, auditor, spline, degree):
order = degree + 1
spline.dxf.degree = degree
add_n_fit_points(spline, required_fit_points(order, tangents=True) - 1)
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert (
auditor.fixes[0].code == AuditError.INVALID_SPLINE_FIT_POINT_COUNT
)
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
def test_remove_unused_knot_values(self, auditor, spline):
add_n_fit_points(spline, 4)
# Add arbitrary knot values -- have no meaning for splines defined
# by fit points:
spline.knots = [1, 2, 3, 4]
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert (
auditor.fixes[0].code == AuditError.INVALID_SPLINE_KNOT_VALUE_COUNT
)
assert len(spline.knots) == 0
# Spline is usable, test if spline will not be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is True
def test_remove_unused_weights(self, auditor, spline):
add_n_fit_points(spline, 4)
# Add arbitrary weights -- have no meaning for splines defined by fit
# points:
spline.weights = [1, 2, 2, 1]
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert auditor.fixes[0].code == AuditError.INVALID_SPLINE_WEIGHT_COUNT
assert len(spline.weights) == 0
# Spline is usable, test if spline will not be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is True
def add_n_control_points(s, count: int):
for x in range(count):
s.control_points.append([x, 0, 0])
class TestControlPoints:
@pytest.mark.parametrize("degree", [1, 2, 3, 4])
def test_auditing_control_point_count(self, auditor, spline, degree):
order = degree + 1
spline.dxf.degree = degree
add_n_control_points(spline, required_control_points(order) - 1)
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert (
auditor.fixes[0].code
== AuditError.INVALID_SPLINE_CONTROL_POINT_COUNT
)
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
@pytest.mark.parametrize("degree", [1, 2, 3, 4])
def test_auditing_knot_value_count(self, auditor, spline, degree):
order = degree + 1
spline.dxf.degree = degree
add_n_control_points(spline, required_control_points(order))
spline.knots = [1, 2, 3]
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert (
auditor.fixes[0].code == AuditError.INVALID_SPLINE_KNOT_VALUE_COUNT
)
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
@pytest.mark.parametrize("degree", [1, 2, 3, 4])
def test_auditing_weight_count(self, auditor, spline, degree):
order = degree + 1
spline.dxf.degree = degree
count = required_control_points(order)
add_n_control_points(spline, count)
spline.knots = uniform_knot_vector(count, order)
spline.weights = range(count - 1)
spline.audit(auditor)
assert len(auditor.fixes) == 1
assert auditor.fixes[0].code == AuditError.INVALID_SPLINE_WEIGHT_COUNT
# Test if invalid spline will be destroyed:
auditor.empty_trashcan()
assert spline.is_alive is False
if __name__ == "__main__":
pytest.main([__file__])
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