Add transform unit test

src/funs/test/test_transform.rs

@@ -0,0 +1,15 @@
+use funs::transform::*;
+use matrix::Mat4;
+use vector::{Vec3, Vec4};
+
+#[test]
+fn test_mat4_from_rotation() {
+    let a_theta = Degrees(180f).to_radians();
+    let a_axis = Vec3::unit_z();
+    let a_pos = Vec4::new(1f32, 0f32, 0f32, 1f32);
+    
+    let a_tform = mat4_from_rotation(a_theta, a_axis).mul_v(&a_pos);
+    let a_expected = Vec4::new(-1f32, 0f32, 0f32, 1f32);
+    
+    assert a_tform == a_expected;
+}

src/lmath.rc

@@ -40,5 +40,6 @@ pub mod funs {
   #[test]
   mod test {
     mod test_boolv;
+    mod test_transform;
   }
 }