Adding tests, fixing older tests.
diff --git a/gen/lib/src/lib.rs b/gen/lib/src/lib.rs
index ba125d9..de76d80 100644
--- a/gen/lib/src/lib.rs
+++ b/gen/lib/src/lib.rs
@@ -8,10 +8,39 @@
use crate::gen::Opt;
use proc_macro2::TokenStream;
-pub use crate::gen::{Error, Result, GeneratedCode};
+pub use crate::gen::{Error, GeneratedCode, Result};
/// Generate C++ bindings code from a Rust token stream. This should be a Rust
/// token stream which somewhere contains a `#[cxx::bridge] mod {}`.
pub fn generate_header_and_cc(rust_source: TokenStream) -> Result<GeneratedCode> {
gen::do_generate_from_tokens(rust_source, Opt::default())
}
+
+#[cfg(test)]
+mod test {
+ use quote::quote;
+
+ #[test]
+ fn test_positive() {
+ let rs = quote! {
+ #[cxx::bridge]
+ mod ffi {
+ extern "C" {
+ fn in_C();
+ }
+ extern "Rust" {
+ fn in_rs();
+ }
+ }
+ };
+ let code = crate::generate_header_and_cc(rs).unwrap();
+ assert!(code.cxx.len() > 0);
+ assert!(code.header.len() > 0);
+ }
+
+ #[test]
+ fn test_negative() {
+ let rs = quote! {};
+ assert!(crate::generate_header_and_cc(rs).is_err())
+ }
+}