allow symbol_intern_string_literal lint in test modules

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Author: onur-ozkan

compiler/rustc_ast/src/util/comments/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use rustc_span::create_default_session_globals_then;
 
 use super::*;

compiler/rustc_hir/src/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use rustc_data_structures::stable_hasher::Hash64;
 use rustc_span::def_id::{DefPathHash, StableCrateId};
 use rustc_span::edition::Edition;

compiler/rustc_lint/src/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use rustc_span::{Symbol, create_default_session_globals_then};
 
 use crate::levels::parse_lint_and_tool_name;

compiler/rustc_parse/src/parser/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use std::assert_matches::assert_matches;
 use std::io::prelude::*;
 use std::iter::Peekable;

compiler/rustc_parse/src/parser/tokenstream/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use rustc_ast::token::{self, IdentIsRaw};
 use rustc_ast::tokenstream::{TokenStream, TokenTree};
 use rustc_span::{BytePos, Span, Symbol, create_default_session_globals_then};

compiler/rustc_span/src/edit_distance/tests.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
+
 use super::*;
 
 #[test]