From 352480ac14c8daa5509b269cdf67a6ee2baf3f18 Mon Sep 17 00:00:00 2001
From: David Moody <david.moody@penta-inc.com>
Date: Fri, 24 Oct 2025 10:08:28 -0500
Subject: [PATCH] add test_dot_product to test_vector.py

---
 test/test_vector.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/test_vector.py b/test/test_vector.py
index 1f4ae0c..04d7304 100644
--- a/test/test_vector.py
+++ b/test/test_vector.py
@@ -10,3 +10,11 @@ class TestVector(unittest.TestCase):
         v3 = v1 + v2
         self.assertIsInstance(v3, Vector)
         self.assertEqual(v3.x, v1.x + v2.x)
+        
+    def test_dot_product(self):
+        v1 = Vector(1, 2, 3)
+        v2 = Vector(-3, -2, -1)
+        v3 = v1.dot(v2)
+        self.assertEqual(v3,v1.x * v2.x + v1.y * v2.y + v1.z * v2.z)
+        vzero = Vector(0, 0, 0)
+        self.assertEqual(v1.dot(vzero),0)