Writing tests

src/test/ui/parser/issue-70583-block-is-empty-1.rs

@@ -0,0 +1,20 @@
+pub enum ErrorHandled {
+    Reported,
+    TooGeneric,
+}
+
+impl ErrorHandled {
+    pub fn assert_reported(self) {
+        match self {
+            ErrorHandled::Reported => {}
+            ErrorHandled::TooGeneric => panic!(),
+        }
+    }
+}
+
+fn struct_generic(x: Vec<i32>) {
+    for v in x {
+        println!("{}", v);
+    }
+    } 
+} //~ ERROR unexpected closing delimiter: `}`

src/test/ui/parser/issue-70583-block-is-empty-1.stderr

@@ -0,0 +1,8 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/issue-70583-block-is-empty-1.rs:20:1
+   |
+LL | }
+   | ^ unexpected closing delimiter
+
+error: aborting due to previous error
+

src/test/ui/parser/issue-70583-block-is-empty-2.rs

@@ -0,0 +1,14 @@
+pub enum ErrorHandled {
+    Reported,
+    TooGeneric,
+}
+
+impl ErrorHandled {
+    pub fn assert_reported(self) {
+        match self {
+            ErrorHandled::Reported => {}} 
+                                     //^~ ERROR this block is empty, you might have not mean to close it
+            ErrorHandled::TooGeneric => panic!(),
+        }
+    }
+} //~ ERROR unexpected closing delimiter: `}`

src/test/ui/parser/issue-70583-block-is-empty-2.stderr

@@ -0,0 +1,11 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/issue-70583-block-is-empty-2.rs:14:1
+   |
+LL |             ErrorHandled::Reported => {}} 
+   |                                       -- this block is empty, you might have not meant to close it
+...
+LL | }
+   | ^ unexpected closing delimiter
+
+error: aborting due to previous error
+