normalize newlines

Author: ytmimi

tests/rustfmt/main.rs

@@ -198,7 +198,8 @@ mod rustfmt_stdin_formatting {
     #[rustfmt::skip]
     #[test]
     fn changes_are_output_to_stdout() {
-        let args = [];
+        // line endings are normalized to '\n' to avoid platform differences
+        let args = ["--config", "newline_style=Unix"];
         let source = "fn main     () {    println!(\"hello world!\"); }";
         let (stdout, _stderr) = rustfmt_std_input(&args, source);
         let expected_output =
@@ -242,11 +243,14 @@ r#"fn main() {
     #[test]
     fn input_formatted_when_stdin_file_hint_is_not_ignored() {
         // NOTE: `src/bin/main.rs` is not ignored in the config file so the input is formatted.
+        // line endings are normalized to '\n' to avoid platform differences
         let args = [
             "--stdin-file-hint",
             "src/bin/main.rs",
             "--config-path",
             "tests/config/stdin-file-hint-ignore.toml",
+            "--config",
+            "newline_style=Unix",
         ];
         let source = "fn main     () {    println!(\"hello world!\"); }";
         let (stdout, _stderr) = rustfmt_std_input(&args, source);
@@ -267,11 +271,14 @@ r#"fn main() {
     fn ignore_list_is_not_set_on_stable_channel_and_therefore_stdin_file_hint_does_nothing() {
         // NOTE: the source is not properly formatted, and although the file is `ignored` we
         // can't set the `ignore` list on the stable channel so the input is formatted
+        // line endings are normalized to '\n' to avoid platform differences
         let args = [
             "--stdin-file-hint",
             "src/lib.rs",
             "--config-path",
             "tests/config/stdin-file-hint-ignore.toml",
+            "--config",
+            "newline_style=Unix",
         ];
         let source = "fn main     () {    println!(\"hello world!\"); }";
         let (stdout, _stderr) = rustfmt_std_input(&args, source);