Add a test for issue 109396

Author: WaffleLapkin

tests/ui/argument-suggestions/issue-109425.rs

@@ -0,0 +1,18 @@
+fn f() {}
+fn i(_: u32) {}
+fn is(_: u32, _: &str) {}
+fn s(_: &str) {}
+
+fn main() {
+    // code             expected suggestion
+    f(0, 1,);        // f()
+    //~^ error: this function takes 0 arguments but 2 arguments were supplied
+    i(0, 1, 2,);     // i(0,)
+    //~^ error: this function takes 1 argument but 3 arguments were supplied
+    i(0, 1, 2);      // i(0)
+    //~^ error: this function takes 1 argument but 3 arguments were supplied
+    is(0, 1, 2, ""); // is(0, "")
+    //~^ error: this function takes 2 arguments but 4 arguments were supplied
+    s(0, 1, "");     // s("")
+    //~^ error: this function takes 1 argument but 3 arguments were supplied
+}

tests/ui/argument-suggestions/issue-109425.stderr

@@ -0,0 +1,98 @@
+error[E0061]: this function takes 0 arguments but 2 arguments were supplied
+  --> $DIR/issue-109425.rs:8:5
+   |
+LL |     f(0, 1,);        // f()
+   |     ^ -  - unexpected argument of type `{integer}`
+   |       |
+   |       unexpected argument of type `{integer}`
+   |
+note: function defined here
+  --> $DIR/issue-109425.rs:1:4
+   |
+LL | fn f() {}
+   |    ^
+help: remove the extra arguments
+   |
+LL -     f(0, 1,);        // f()
+LL +     f(,);        // f()
+   |
+
+error[E0061]: this function takes 1 argument but 3 arguments were supplied
+  --> $DIR/issue-109425.rs:10:5
+   |
+LL |     i(0, 1, 2,);     // i(0,)
+   |     ^    -  - unexpected argument of type `{integer}`
+   |          |
+   |          unexpected argument of type `{integer}`
+   |
+note: function defined here
+  --> $DIR/issue-109425.rs:2:4
+   |
+LL | fn i(_: u32) {}
+   |    ^ ------
+help: remove the extra arguments
+   |
+LL -     i(0, 1, 2,);     // i(0,)
+LL +     i(0,);     // i(0,)
+   |
+
+error[E0061]: this function takes 1 argument but 3 arguments were supplied
+  --> $DIR/issue-109425.rs:12:5
+   |
+LL |     i(0, 1, 2);      // i(0)
+   |     ^    -  - unexpected argument of type `{integer}`
+   |          |
+   |          unexpected argument of type `{integer}`
+   |
+note: function defined here
+  --> $DIR/issue-109425.rs:2:4
+   |
+LL | fn i(_: u32) {}
+   |    ^ ------
+help: remove the extra arguments
+   |
+LL -     i(0, 1, 2);      // i(0)
+LL +     i(0);      // i(0)
+   |
+
+error[E0061]: this function takes 2 arguments but 4 arguments were supplied
+  --> $DIR/issue-109425.rs:14:5
+   |
+LL |     is(0, 1, 2, ""); // is(0, "")
+   |     ^^    -  - unexpected argument of type `{integer}`
+   |           |
+   |           unexpected argument of type `{integer}`
+   |
+note: function defined here
+  --> $DIR/issue-109425.rs:3:4
+   |
+LL | fn is(_: u32, _: &str) {}
+   |    ^^ ------  -------
+help: remove the extra arguments
+   |
+LL -     is(0, 1, 2, ""); // is(0, "")
+LL +     is(0, ""); // is(0, "")
+   |
+
+error[E0061]: this function takes 1 argument but 3 arguments were supplied
+  --> $DIR/issue-109425.rs:16:5
+   |
+LL |     s(0, 1, "");     // s("")
+   |     ^ -  - unexpected argument of type `{integer}`
+   |       |
+   |       unexpected argument of type `{integer}`
+   |
+note: function defined here
+  --> $DIR/issue-109425.rs:4:4
+   |
+LL | fn s(_: &str) {}
+   |    ^ -------
+help: remove the extra arguments
+   |
+LL -     s(0, 1, "");     // s("")
+LL +     s(, "");     // s("")
+   |
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0061`.