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from alphageometry.modules import visualizer
def test_polygon_svg_contains_polygon_tag():
square = [(0, 0), (1, 0), (1, 1), (0, 1)]
svg = visualizer.polygon_to_svg(square, label="sq", show_vertex_labels=True)
assert "<polygon" in svg
assert "sq" in svg
# vertex labels 0..3 should appear
assert "0" in svg and "1" in svg and "2" in svg and "3" in svg
def test_mesh_svg_contains_paths_and_triangle_labels():
verts = [(0, 0), (1, 0), (0, 1)]
tris = [(0, 1, 2)]
svg = visualizer.mesh_to_svg(verts, tris, show_triangle_labels=True)
assert "<path" in svg
assert "1" in svg or "0" in svg # triangle label or indexing
def test_write_svg(tmp_path):
svg = visualizer.polygon_to_svg([(0, 0), (1, 0), (0, 1)], label="t")
p = tmp_path / "out" / "test.svg"
visualizer.write_svg(str(p), svg)
assert p.exists()
content = p.read_text(encoding="utf8")
assert "<svg" in content
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