salsa: Fix warnings about clippy str_to_string rule

Author: tetsuharuohzeki

crates/salsa/tests/interned.rs

@@ -44,47 +44,47 @@ impl salsa::InternKey for InternKey {
 #[test]
 fn test_intern1() {
     let db = Database::default();
-    let foo0 = db.intern1("foo".to_string());
-    let bar0 = db.intern1("bar".to_string());
-    let foo1 = db.intern1("foo".to_string());
-    let bar1 = db.intern1("bar".to_string());
+    let foo0 = db.intern1("foo".to_owned());
+    let bar0 = db.intern1("bar".to_owned());
+    let foo1 = db.intern1("foo".to_owned());
+    let bar1 = db.intern1("bar".to_owned());
 
     assert_eq!(foo0, foo1);
     assert_eq!(bar0, bar1);
     assert_ne!(foo0, bar0);
 
-    assert_eq!("foo".to_string(), db.lookup_intern1(foo0));
-    assert_eq!("bar".to_string(), db.lookup_intern1(bar0));
+    assert_eq!("foo".to_owned(), db.lookup_intern1(foo0));
+    assert_eq!("bar".to_owned(), db.lookup_intern1(bar0));
 }
 
 #[test]
 fn test_intern2() {
     let db = Database::default();
-    let foo0 = db.intern2("x".to_string(), "foo".to_string());
-    let bar0 = db.intern2("x".to_string(), "bar".to_string());
-    let foo1 = db.intern2("x".to_string(), "foo".to_string());
-    let bar1 = db.intern2("x".to_string(), "bar".to_string());
+    let foo0 = db.intern2("x".to_owned(), "foo".to_owned());
+    let bar0 = db.intern2("x".to_owned(), "bar".to_owned());
+    let foo1 = db.intern2("x".to_owned(), "foo".to_owned());
+    let bar1 = db.intern2("x".to_owned(), "bar".to_owned());
 
     assert_eq!(foo0, foo1);
     assert_eq!(bar0, bar1);
     assert_ne!(foo0, bar0);
 
-    assert_eq!(("x".to_string(), "foo".to_string()), db.lookup_intern2(foo0));
-    assert_eq!(("x".to_string(), "bar".to_string()), db.lookup_intern2(bar0));
+    assert_eq!(("x".to_owned(), "foo".to_owned()), db.lookup_intern2(foo0));
+    assert_eq!(("x".to_owned(), "bar".to_owned()), db.lookup_intern2(bar0));
 }
 
 #[test]
 fn test_intern_key() {
     let db = Database::default();
-    let foo0 = db.intern_key("foo".to_string());
-    let bar0 = db.intern_key("bar".to_string());
-    let foo1 = db.intern_key("foo".to_string());
-    let bar1 = db.intern_key("bar".to_string());
+    let foo0 = db.intern_key("foo".to_owned());
+    let bar0 = db.intern_key("bar".to_owned());
+    let foo1 = db.intern_key("foo".to_owned());
+    let bar1 = db.intern_key("bar".to_owned());
 
     assert_eq!(foo0, foo1);
     assert_eq!(bar0, bar1);
     assert_ne!(foo0, bar0);
 
-    assert_eq!("foo".to_string(), db.lookup_intern_key(foo0));
-    assert_eq!("bar".to_string(), db.lookup_intern_key(bar0));
+    assert_eq!("foo".to_owned(), db.lookup_intern_key(foo0));
+    assert_eq!("bar".to_owned(), db.lookup_intern_key(bar0));
 }