1 files changed, 19 insertions, 0 deletions
diff --git a/tests/mir-opt/simple_option_map_e2e.rs b/tests/mir-opt/simple_option_map_e2e.rs
new file mode 100644
index 000000000..2acd2a227
--- /dev/null
+++ b/tests/mir-opt/simple_option_map_e2e.rs
@@ -0,0 +1,19 @@
+#[inline(always)]
+fn map<T, U, F>(slf: Option<T>, f: F) -> Option<U>
+where
+    F: FnOnce(T) -> U,
+{
+    match slf {
+        Some(x) => Some(f(x)),
+        None => None,
+    }
+}
+
+// EMIT_MIR simple_option_map_e2e.ezmap.PreCodegen.after.mir
+pub fn ezmap(x: Option<i32>) -> Option<i32> {
+    map(x, |n| n + 1)
+}
+
+fn main() {
+    assert_eq!(None, ezmap(None));
+}