fix: use platform-specific literal newlines

see rust-lang/rust#62865

Author: sbrugman

src/source_code/generator.rs

@@ -1192,7 +1192,7 @@ if True:
 if True:
     pass
 "#
-            .trim()
+            .trim().replace("\n", LineEnding::default().as_str())
         );
     }
 
@@ -1242,7 +1242,7 @@ if True:
             round_trip_with(
                 &Indentation::new("    ".to_string()),
                 &Quote::default(),
-                &LineEnding::default(),
+                &LineEnding::LF(),
                 r#"
 if True:
   pass
@@ -1253,13 +1253,13 @@ if True:
 if True:
     pass
 "#
-            .trim()
+            .trim().replace("\n", LineEnding::default().as_str())
         );
         assert_eq!(
             round_trip_with(
                 &Indentation::new("  ".to_string()),
                 &Quote::default(),
-                &LineEnding::default(),
+                &LineEnding::LF(),
                 r#"
 if True:
   pass
@@ -1270,7 +1270,7 @@ if True:
 if True:
   pass
 "#
-            .trim()
+            .trim().replace("\n", LineEnding::default().as_str())
         );
         assert_eq!(
             round_trip_with(
@@ -1287,7 +1287,7 @@ if True:
 if True:
 	pass
 "#
-            .trim()
+            .trim().replace("\n", LineEnding::default().as_str())
         );
     }