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5 changes: 4 additions & 1 deletion README.md
Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
<div align="center">
<!-- Title: -->
<a href="https://github.com/TheAlgorithms/">
<img src="https://raw.githubusercontent.com/TheAlgorithms/website/1cd824df116b27029f17c2d1b42d81731f28a920/public/logo.svg" height="100">
</a>
<h1><a href="https://github.com/TheAlgorithms/">The Algorithms</a> - Python</h1>
Expand Down Expand Up @@ -30,6 +29,10 @@
<a href="https://github.com/psf/black">
<img src="https://img.shields.io/static/v1?label=code%20style&message=black&color=black&style=flat-square" height="20" alt="code style: black">
</a>
</a>
<a href="https://github.com/Bhavesh9908">
<img src="https://avatars.githubusercontent.com/u/141760947?v=4 alt="pre-commit>
</a>
<!-- Short description: -->
<h3>All algorithms implemented in Python - for education</h3>
</div>
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29 changes: 11 additions & 18 deletions data_structures/kd_tree/tests/test_kdtree.py
Original file line number Diff line number Diff line change
Expand Up @@ -8,46 +8,41 @@


@pytest.mark.parametrize(
("num_points", "cube_size", "num_dimensions", "depth", "expected_result"),
("num_points", "cube_size", "num_dimensions", "expected_result"),
[
(0, 10.0, 2, 0, None), # Empty points list
(10, 10.0, 2, 2, KDNode), # Depth = 2, 2D points
(10, 10.0, 3, -2, KDNode), # Depth = -2, 3D points
(0, 10.0, 2, None), # Empty points list
(10, 10.0, 2, KDNode), # 2D points
(10, 10.0, 3, KDNode), # 3D points
],
)
def test_build_kdtree(num_points, cube_size, num_dimensions, depth, expected_result):
def test_build_kdtree(num_points, cube_size, num_dimensions, expected_result):
"""
Test that KD-Tree is built correctly.

Cases:
- Empty points list.
- Positive depth value.
- Negative depth value.
- Valid points list with correct dimensions.
"""
points = (
hypercube_points(num_points, cube_size, num_dimensions).tolist()
if num_points > 0
else []
)

kdtree = build_kdtree(points, depth=depth)
kdtree = build_kdtree(points)

if expected_result is None:
# Empty points list case
assert kdtree is None, f"Expected None for empty points list, got {kdtree}"
else:
# Check if root node is not None
# Check if KD-Tree is built correctly
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The original comment is: Check if root node is not None. It matches the test being made.

assert kdtree is not None, "Expected a KDNode, got None"

# Check if root has correct dimensions
assert (
len(kdtree.point) == num_dimensions
), f"Expected point dimension {num_dimensions}, got {len(kdtree.point)}"

# Check that the tree is balanced to some extent (simplistic check)
assert isinstance(
kdtree, KDNode
), f"Expected KDNode instance, got {type(kdtree)}"
assert (
len(kdtree.point) == num_dimensions
), f"Expected point dimension {num_dimensions}, got {len(kdtree.point)}"


def test_nearest_neighbour_search():
Expand Down Expand Up @@ -95,6 +90,4 @@ def test_edge_cases():


if __name__ == "__main__":
import pytest

pytest.main()