diff --git a/test/basic/operators.cpp b/test/basic/operators.cpp
index 0734aef..4a81d07 100644
--- a/test/basic/operators.cpp
+++ b/test/basic/operators.cpp
@@ -28,4 +28,27 @@ TTS_CASE("Check operator*")
 
   a *= 10.5;
   TTS_EQUAL(a, ref);
+};
+
+TTS_CASE("Check operator matrix + matrix")
+{
+  rotgen::matrix<double> mat1(3,4);
+  rotgen::matrix<double> mat2(3,4);
+  rotgen::matrix<double> mat_sum(3,4);
+
+  for(std::size_t r=0;r<mat1.rows();r++)
+  {
+    for(std::size_t c=0;c<mat1.cols();c++)
+    {
+      mat1(r,c)   = r + 2 * c + 3;
+      mat2(r,c) = r - c - 54;
+      mat_sum(r,c) = 2 * r + c - 51;
+    }
+  }
+
+  TTS_EQUAL(mat1 + mat2, mat_sum);
+  TTS_EQUAL(mat2 + mat1, mat_sum);
+
+  mat1 += mat2;
+  TTS_EQUAL(mat1, mat_sum);
 };
\ No newline at end of file