diff --git a/examples/ci-tests/tests/build.rs b/examples/ci-tests/tests/build.rs
index d09c1f8..a42d48c 100644
--- a/examples/ci-tests/tests/build.rs
+++ b/examples/ci-tests/tests/build.rs
@@ -1,5 +1,7 @@
 #![allow(clippy::cognitive_complexity)]
 
+use std::{convert::TryFrom, iter::FromIterator};
+
 use molecule::prelude::*;
 
 use molecule_ci_tests::testset;
@@ -43,3 +45,19 @@ macro_rules! verify_build_empty {
 fn build_empty_can_verify() {
     testset!(all, verify_build_empty);
 }
+
+#[test]
+fn test_conversion() {
+    use molecule_ci_tests::types::*;
+
+    assert_eq!(
+        Byte11::try_from(&[3; 11][..]).unwrap().as_bytes(),
+        &[3; 11][..],
+    );
+    assert_eq!(
+        u32::from_le_bytes(Byte4::from(3u32.to_le_bytes()).into()),
+        3u32,
+    );
+    let _ = BytesVecOpt::from(BytesVec::from_iter([Bytes::from_iter([3, 4])]));
+    let _ = UnionA::from(Byte::from(3u8));
+}