euclidean_distance_update

solutions/tests/challenge_34/test_euclidean_distance.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Test suite for the Euclidean distance function.
+This module contains unit tests for verifying the correctness of the
+euclidean_distance function across different cases.
+"""
+
+import unittest
+
+from ...challenge_34.euclidean_distance import euclidean_distance
+
+
+class TestEuclideanDistance(unittest.TestCase):
+    """
+    Unit tests for the `euclidean_distance` function.
+    This class includes test cases for 2D, 3D, and error scenarios like
+    different dimensions and negative coordinates.
+    """
+
+    def test_same_point(self):
+        """
+        Test case where both points are the same.
+        The Euclidean distance between the same points should be 0.
+        """
+        p1 = (1, 2, 3)
+        p2 = (1, 2, 3)
+        actual = euclidean_distance(p1, p2)
+        expected = 0
+        self.assertEqual(actual, expected)
+
+    def test_two_dimensional_points(self):
+        """Test case with 2D points."""
+        p1 = (1, 2)
+        p2 = (4, 6)
+        actual = euclidean_distance(p1, p2)
+        expected = 5.0
+        self.assertEqual(actual, expected)
+
+    def test_three_dimensional_points(self):
+        """Test case with 3D points."""
+        p1 = (1, 2, 3)
+        p2 = (4, 5, 6)
+        actual = euclidean_distance(p1, p2)
+        expected = 5.196152422706632
+        self.assertEqual(actual, expected)
+
+    def test_different_dimensions(self):
+        """Test case where points have different dimensions."""
+        p1 = (1, 2)
+        p2 = (4, 5, 6)
+        with self.assertRaises(ValueError):
+            euclidean_distance(p1, p2)
+
+    def test_negative_coordinates(self):
+        """Test case with negative coordinates."""
+        p1 = (-1, -2, -3)
+        p2 = (1, 2, 3)
+        actual = euclidean_distance(p1, p2)
+        expected = 7.483314773547883
+        self.assertEqual(actual, expected)