1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/suggestions/args-instead-of-tuple.rs b/tests/ui/suggestions/args-instead-of-tuple.rs
new file mode 100644
index 00000000000..1c65407b395
--- /dev/null
+++ b/tests/ui/suggestions/args-instead-of-tuple.rs
@@ -0,0 +1,33 @@
+// Test suggesting tuples where bare arguments may have been passed
+// See issue #86481 for details.
+
+// run-rustfix
+
+fn main() {
+    let _: Result<(i32, i8), ()> = Ok(1, 2);
+    //~^ ERROR enum variant takes 1 argument but 2 arguments were supplied
+    let _: Option<(i32, i8, &'static str)> = Some(1, 2, "hi");
+    //~^ ERROR enum variant takes 1 argument but 3 arguments were supplied
+    let _: Option<()> = Some();
+    //~^ ERROR enum variant takes 1 argument but 0 arguments were supplied
+
+    let _: Option<(i32,)> = Some(3);
+    //~^ ERROR mismatched types
+
+    let _: Option<(i32,)> = Some((3));
+    //~^ ERROR mismatched types
+
+    two_ints(1, 2); //~ ERROR function takes 1 argument
+
+    with_generic(3, 4); //~ ERROR function takes 1 argument
+}
+
+fn two_ints(_: (i32, i32)) {
+}
+
+fn with_generic<T: Copy + Send>((a, b): (i32, T)) {
+    if false {
+        // test generics/bound handling
+        with_generic(a, b); //~ ERROR function takes 1 argument
+    }
+}