4 files changed, 37 insertions, 2 deletions
diff --git a/ops/tests/01_fast_callback_options.rs b/ops/tests/01_fast_callback_options.rs
new file mode 100644
index 000000000..815d9262c
--- /dev/null
+++ b/ops/tests/01_fast_callback_options.rs
@@ -0,0 +1,11 @@
+use deno_core::v8::fast_api::FastApiCallbackOptions;
+use deno_ops::op;
+
+#[op(fast)]
+fn op_fallback(options: Option<&mut FastApiCallbackOptions>) {
+  if let Some(options) = options {
+    options.fallback = true;
+  }
+}
+
+fn main() {}
diff --git a/ops/tests/compile_fail/unsupported.rs b/ops/tests/compile_fail/unsupported.rs
index 1c4d6407a..52d55de5b 100644
--- a/ops/tests/compile_fail/unsupported.rs
+++ b/ops/tests/compile_fail/unsupported.rs
@@ -17,6 +17,13 @@ fn op_u16_arg(a: u16, b: u16) {
   //
 }
 
+use deno_core::v8::fast_api::FastApiCallbackOptions;
+
+#[op(fast)]
+fn op_callback_options(options: &mut FastApiCallbackOptions) {
+  // fast callback options must be an Option.
+}
+
 #[op(fast)]
 async fn op_async_fn(a: i32, b: i32) -> i32 {
   a + b
diff --git a/ops/tests/compile_fail/unsupported.stderr b/ops/tests/compile_fail/unsupported.stderr
index 68c9f7f16..88d1c1fe4 100644
--- a/ops/tests/compile_fail/unsupported.stderr
+++ b/ops/tests/compile_fail/unsupported.stderr
@@ -23,9 +23,25 @@ error: custom attribute panicked
    = help: message: op cannot be a fast api. enforced by #[op(fast)]
 
 error: custom attribute panicked
-  --> tests/compile_fail/unsupported.rs:20:1
+  --> tests/compile_fail/unsupported.rs:22:1
    |
-20 | #[op(fast)]
+22 | #[op(fast)]
+   | ^^^^^^^^^^^
+   |
+   = help: message: op cannot be a fast api. enforced by #[op(fast)]
+
+error: custom attribute panicked
+  --> tests/compile_fail/unsupported.rs:27:1
+   |
+27 | #[op(fast)]
    | ^^^^^^^^^^^
    |
    = help: message: async op cannot be a fast api. enforced by #[op(fast)]
+
+warning: unused import: `deno_core::v8::fast_api::FastApiCallbackOptions`
+  --> tests/compile_fail/unsupported.rs:20:5
+   |
+20 | use deno_core::v8::fast_api::FastApiCallbackOptions;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(unused_imports)]` on by default
diff --git a/ops/tests/mod.rs b/ops/tests/mod.rs
index 522647f51..699bcf9f4 100644
--- a/ops/tests/mod.rs
+++ b/ops/tests/mod.rs
@@ -2,4 +2,5 @@
 fn op_macro() {
   let t = trybuild::TestCases::new();
   t.compile_fail("tests/compile_fail/*.rs");
+  t.pass("tests/01_fast_callback_options.rs");
 }