From ea6114b9ae6bf707fbca9bfe7678b3d9dcb7a696 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Tue, 29 Jun 2021 20:51:38 -0700
Subject: [PATCH] test 4x4 equality and inequality

---
 rtchallenge/src/matrices.rs | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/rtchallenge/src/matrices.rs b/rtchallenge/src/matrices.rs
index 2d6d96e..cde3253 100644
--- a/rtchallenge/src/matrices.rs
+++ b/rtchallenge/src/matrices.rs
@@ -307,4 +307,36 @@ mod tests {
         assert_eq!(m[(3, 0)], 13.5);
         assert_eq!(m[(3, 2)], 15.5);
     }
+    #[test]
+    fn equality4x4() {
+        let a = Matrix4x4::new(
+            [1., 2., 3., 4.],
+            [5., 6., 7., 8.],
+            [9., 8., 7., 6.],
+            [5., 4., 3., 2.],
+        );
+        let b = Matrix4x4::new(
+            [1., 2., 3., 4.],
+            [5., 6., 7., 8.],
+            [9., 8., 7., 6.],
+            [5., 4., 3., 2.],
+        );
+        assert_eq!(a, b);
+    }
+    #[test]
+    fn inequality4x4() {
+        let a = Matrix4x4::new(
+            [1., 2., 3., 4.],
+            [5., 6., 7., 8.],
+            [9., 8., 7., 6.],
+            [5., 4., 3., 2.],
+        );
+        let b = Matrix4x4::new(
+            [2., 3., 4., 5.],
+            [6., 7., 8., 9.],
+            [8., 7., 6., 5.],
+            [4., 3., 2., 1.],
+        );
+        assert_ne!(a, b);
+    }
 }