[test-matrix] Fixed tests

src/tests/catch/test-matrix.cpp

@@ -34,6 +34,8 @@ TEST_CASE("Multiply test")
     MatrixBase<float, 3, 1> B{1.0f, 2.0f, 3.7f};
     MatrixBase<float, 3, 1> C{};
 
+    C = A * B;
+
     REQUIRE( C(0,0) == Approx( 8.1f)  );
     REQUIRE( C(1,0) == Approx(-7.7f)  );
     REQUIRE( C(2,0) == Approx(-10.3f) );
@@ -46,6 +48,8 @@ TEST_CASE("Sum test")
 
     MatrixBase<float, 3, 3> C{};
 
+    C = A + B;
+
     REQUIRE( C(0,0) == Approx(2.0f ));
     REQUIRE( C(0,1) == Approx(0.0f ));
     REQUIRE( C(0,2) == Approx(6.0f ));
@@ -64,6 +68,8 @@ TEST_CASE("Subtract test")
 
     MatrixBase<float, 3, 3> C{};
 
+    C = A - B;
+    
     REQUIRE( C(0,0) == Approx(0.0f  ));
     REQUIRE( C(0,1) == Approx(-4.0f ));
     REQUIRE( C(0,2) == Approx(0.0f  ));