Merge #3392

3392: UI test cleanup: Extract for_loop_over_x tests r=matthiaskrgr a=phansch

cc #2038

Co-authored-by: Philipp Hansch <dev@phansch.net>

Author: bors[bot]

tests/ui/for_loop.rs

@@ -7,71 +7,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-
-
-
-
 use std::collections::*;
 use std::rc::Rc;
 
 static STATIC: [usize; 4] = [0, 1, 8, 16];
 const CONST: [usize; 4] = [0, 1, 8, 16];
 
 #[warn(clippy::all)]
-fn for_loop_over_option_and_result() {
-    let option = Some(1);
-    let result = option.ok_or("x not found");
-    let v = vec![0, 1, 2];
-
-    // check FOR_LOOP_OVER_OPTION lint
-    for x in option {
-        println!("{}", x);
-    }
-
-    // check FOR_LOOP_OVER_RESULT lint
-    for x in result {
-        println!("{}", x);
-    }
-
-    for x in option.ok_or("x not found") {
-        println!("{}", x);
-    }
-
-    // make sure LOOP_OVER_NEXT lint takes clippy::precedence when next() is the last call
-    // in the chain
-    for x in v.iter().next() {
-        println!("{}", x);
-    }
-
-    // make sure we lint when next() is not the last call in the chain
-    for x in v.iter().next().and(Some(0)) {
-        println!("{}", x);
-    }
-
-    for x in v.iter().next().ok_or("x not found") {
-        println!("{}", x);
-    }
-
-    // check for false positives
-
-    // for loop false positive
-    for x in v {
-        println!("{}", x);
-    }
-
-    // while let false positive for Option
-    while let Some(x) = option {
-        println!("{}", x);
-        break;
-    }
-
-    // while let false positive for Result
-    while let Ok(x) = result {
-        println!("{}", x);
-        break;
-    }
-}
-
 struct Unrelated(Vec<u8>);
 impl Unrelated {
     fn next(&self) -> std::slice::Iter<u8> {
@@ -379,8 +321,6 @@ fn main() {
     }
     println!("index: {}", index);
 
-    for_loop_over_option_and_result();
-
     let m: HashMap<u64, u64> = HashMap::new();
     for (_, v) in &m {
         let _v = v;