Fix filter_map in minicore

Author: flodiebold

crates/hir_ty/src/tests/method_resolution.rs

@@ -1750,3 +1750,15 @@ pub fn test() {
 "#,
     );
 }
+
+#[test]
+fn resolve_minicore_iterator() {
+    check_types(
+        r#"
+//- minicore: iterators, sized
+fn foo() {
+    let m = core::iter::repeat(()).filter_map(|()| Some(92)).next();
+}         //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Option<i32>
+"#,
+    );
+}

crates/test_utils/src/minicore.rs

@@ -518,7 +518,7 @@ pub mod iter {
             }
         }
     }
-    pub use self::adapters::Take;
+    pub use self::adapters::{Take, FilterMap};
 
     mod sources {
         mod repeat {