add tests for type-aliased hash types

Author: Jacherr

tests/ui/iter_over_hash_type.rs

@@ -1,15 +1,20 @@
 //@aux-build:proc_macros.rs
-
+#![feature(rustc_private)]
 #![warn(clippy::iter_over_hash_type)]
 use std::collections::{HashMap, HashSet};
 
+extern crate rustc_data_structures;
+
 extern crate proc_macros;
 
 fn main() {
     let mut hash_set = HashSet::<i32>::new();
     let mut hash_map = HashMap::<i32, i32>::new();
+    let mut fx_hash_map = rustc_data_structures::fx::FxHashMap::<i32, i32>::default();
+    let mut fx_hash_set = rustc_data_structures::fx::FxHashMap::<i32, i32>::default();
     let vec = Vec::<i32>::new();
 
+    // test hashset
     for x in &hash_set {
         let _ = x;
     }
@@ -22,6 +27,8 @@ fn main() {
     for x in hash_set.drain() {
         let _ = x;
     }
+
+    // test hashmap
     for (x, y) in &hash_map {
         let _ = (x, y);
     }
@@ -44,6 +51,14 @@ fn main() {
         let _ = x;
     }
 
+    // test type-aliased hashers
+    for x in fx_hash_set {
+        let _ = x;
+    }
+    for x in fx_hash_map {
+        let _ = x;
+    }
+
     // shouldnt fire
     for x in &vec {
         let _ = x;

tests/ui/iter_over_hash_type.stderr

@@ -1,5 +1,5 @@
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:13:5
+  --> $DIR/iter_over_hash_type.rs:18:5
    |
 LL | /     for x in &hash_set {
 LL | |         let _ = x;
@@ -10,84 +10,100 @@ LL | |     }
    = help: to override `-D warnings` add `#[allow(clippy::iter_over_hash_type)]`
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:16:5
+  --> $DIR/iter_over_hash_type.rs:21:5
    |
 LL | /     for x in hash_set.iter() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:19:5
+  --> $DIR/iter_over_hash_type.rs:24:5
    |
 LL | /     for x in hash_set.clone() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:22:5
+  --> $DIR/iter_over_hash_type.rs:27:5
    |
 LL | /     for x in hash_set.drain() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:25:5
+  --> $DIR/iter_over_hash_type.rs:32:5
    |
 LL | /     for (x, y) in &hash_map {
 LL | |         let _ = (x, y);
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:28:5
+  --> $DIR/iter_over_hash_type.rs:35:5
    |
 LL | /     for x in hash_map.keys() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:31:5
+  --> $DIR/iter_over_hash_type.rs:38:5
    |
 LL | /     for x in hash_map.values() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:34:5
+  --> $DIR/iter_over_hash_type.rs:41:5
    |
 LL | /     for x in hash_map.values_mut() {
 LL | |         *x += 1;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:37:5
+  --> $DIR/iter_over_hash_type.rs:44:5
    |
 LL | /     for x in hash_map.iter() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:40:5
+  --> $DIR/iter_over_hash_type.rs:47:5
    |
 LL | /     for x in hash_map.clone() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
 error: iteration over unordered hash-based type
-  --> $DIR/iter_over_hash_type.rs:43:5
+  --> $DIR/iter_over_hash_type.rs:50:5
    |
 LL | /     for x in hash_map.drain() {
 LL | |         let _ = x;
 LL | |     }
    | |_____^
 
-error: aborting due to 11 previous errors
+error: iteration over unordered hash-based type
+  --> $DIR/iter_over_hash_type.rs:55:5
+   |
+LL | /     for x in fx_hash_set {
+LL | |         let _ = x;
+LL | |     }
+   | |_____^
+
+error: iteration over unordered hash-based type
+  --> $DIR/iter_over_hash_type.rs:58:5
+   |
+LL | /     for x in fx_hash_map {
+LL | |         let _ = x;
+LL | |     }
+   | |_____^
+
+error: aborting due to 13 previous errors