diff --git a/tests/api.rs b/tests/api.rs
new file mode 100644
index 00000000..cf63ef81
--- /dev/null
+++ b/tests/api.rs
@@ -0,0 +1,17 @@
+use smallvec::{CollectionAllocErr, SmallVec};
+
+fn exported_alloc_error(error: CollectionAllocErr) -> CollectionAllocErr {
+    error
+}
+
+#[test]
+fn fallible_allocation_error_is_exported() {
+    let mut vec = SmallVec::<u8, 4>::new();
+
+    let error = vec.try_reserve(usize::MAX).unwrap_err();
+
+    assert!(matches!(
+        exported_alloc_error(error),
+        CollectionAllocErr::CapacityOverflow
+    ));
+}