diff --git a/src/lmath.rc b/src/lmath.rc
index f181aed..20ff5b5 100644
--- a/src/lmath.rc
+++ b/src/lmath.rc
@@ -19,6 +19,7 @@ pub mod vec;
 
 #[test]
 mod test {
+    mod test_angle;
     mod test_gltypes;
     mod test_mat;
     mod test_quat;
diff --git a/src/test/test_angle.rs b/src/test/test_angle.rs
new file mode 100644
index 0000000..a0f948b
--- /dev/null
+++ b/src/test/test_angle.rs
@@ -0,0 +1,47 @@
+use core::float::consts::pi;
+
+use angle::*;
+
+#[test]
+fn test_radians() {
+    assert *Radians(0.0).to_degrees()           == *Degrees(0.0);
+    assert *Radians(pi / 4.0).to_degrees()      == *Degrees(45.0);
+    assert *Radians(pi / 2.0).to_degrees()      == *Degrees(90.0);
+    assert *Radians(pi).to_degrees()            == *Degrees(180.0);
+    assert *Radians(2.0 * pi).to_degrees()      == *Degrees(360.0);
+    assert *Radians(5.0 * pi).to_degrees()      == *Degrees(900.0);
+    assert *Radians(-pi).to_degrees()           == *Degrees(-180.0);
+    
+    assert *Radians(0.0).to_radians()           == *Radians(0.0);
+    assert *Radians(5.0 * pi).to_radians()      == *Radians(5.0 * pi);
+    assert *Radians(-pi).to_radians()           == *Radians(-pi);
+    
+    assert *(Radians(pi) + Radians(pi))         == *Radians(2.0 * pi);
+    assert *(Radians(2.0 * pi) - Radians(pi))   == *Radians(pi);
+    assert *(Radians(pi) * 2.0)                 == *Radians(2.0 * pi);
+    assert *(Radians(pi) / 2.0)                 == *Radians(pi / 2.0);
+    assert *(Radians(3.0 * pi) % (2.0 * pi))    == *Radians(pi);
+    assert *(-Radians(pi))                      == *Radians(-pi);
+}
+
+#[test]
+fn test_degrees() {
+    assert *Degrees(0.0).to_radians()           == *Radians(0.0)      as float;
+    assert *Degrees(45.0).to_radians()          == *Radians(pi / 4.0) as float;
+    assert *Degrees(90.0).to_radians()          == *Radians(pi / 2.0) as float;
+    assert *Degrees(180.0).to_radians()         == *Radians(pi)       as float;
+    assert *Degrees(360.0).to_radians()         == *Radians(2.0 * pi) as float;
+    assert *Degrees(900.0).to_radians()         == *Radians(5.0 * pi) as float;
+    assert *Degrees(-180.0).to_radians()        == *Radians(-pi)      as float;
+    
+    assert *Degrees(0.0).to_degrees()           == *Degrees(0.0);
+    assert *Degrees(900.0).to_degrees()         == *Degrees(900.0);
+    assert *Degrees(-180.0).to_degrees()        == *Degrees(-180.0);
+    
+    assert *(Degrees(180.0) + Degrees(180.0))   == *Degrees(360.0);
+    assert *(Degrees(360.0) - Degrees(180.0))   == *Degrees(180.0);
+    assert *(Degrees(360.0) * 2.0)              == *Degrees(720.0);
+    assert *(Degrees(180.0) / 2.0)              == *Degrees(90.0);
+    assert *(Degrees(540.0) % (360.0))          == *Degrees(180.0);
+    assert *(-Degrees(180.0))                   == *Degrees(-180.0);
+}
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