1 files changed, 27 insertions, 0 deletions
diff --git a/tests/matrix.scm b/tests/matrix.scm
index 7f36280..0cd24a9 100644
--- a/tests/matrix.scm
+++ b/tests/matrix.scm
@@ -24,7 +24,34 @@
   #:use-module (chickadee math vector))
 
 (with-tests "matrix"
+  (test-group "3x3 matrices"
+    (test-assert "matrix3-copy"
+      (let ((m (make-matrix3 0 1 2
+                             3 4 5
+                             6 7 8)))
+        (matrix3= m (matrix3-copy m))))
+    (test-assert "matrix3-copy!"
+      (let ((src (make-matrix3 0 1 2
+                               3 4 5
+                               6 7 8))
+            (dest (make-null-matrix3)))
+        (matrix3-copy! src dest)
+        (matrix3= src dest))))
   (test-group "4x4 matrices"
+    (test-assert "matrix4-copy"
+      (let ((m (make-matrix4 0 1 2 3
+                             4 5 6 7
+                             8 9 0 1
+                             2 3 4 5)))
+        (matrix4= m (matrix4-copy m))))
+    (test-assert "matrix4-copy!"
+      (let ((src (make-matrix4 0 1 2 3
+                               4 5 6 7
+                               8 9 0 1
+                               2 3 4 5))
+            (dest (make-null-matrix4)))
+        (matrix4-copy! src dest)
+        (matrix4= src dest)))
     (test-group "multiplication"
       (test-assert "identity"
         (let ((m (make-matrix4 0 1 2 3