Remove trailing spaces in tests

crates/ide/src/ide/assists/flatten_attrset.rs

@@ -144,7 +144,7 @@ mod tests {
     ${g} = 3;
   };
 }
-            ",
+",
             expect![[r#"
                 {
 

crates/ide/src/ide/assists/pack_bindings.rs

@@ -316,7 +316,7 @@ rec {
   foo = rec { };
   $0foo = { a = 42; };
 }
-              ",
+",
             expect![[r#"
                 {
                 foo = rec {
@@ -343,7 +343,7 @@ rec {
     d = 3;
   };
 }
-              ",
+",
             expect![[r#"
                 {
                 foo = {

crates/ide/src/ide/completion.rs

@@ -796,7 +796,7 @@ mod tests {
     inputs.nixpkgs.url = "...";
     outputs = { n$0 }: { };
 }
-            "#,
+"#,
             "nixpkgs",
             expect![[r#"
                 (Param) {
@@ -815,7 +815,7 @@ mod tests {
 {
     nix.e$0
 }
-            ",
+",
             "enable",
             expect![[r#"
                 (Field) { ... }:
@@ -830,7 +830,7 @@ mod tests {
 {
     notexists.e$0
 }
-            ",
+",
             "enable",
         );
         check_no(
@@ -839,7 +839,7 @@ mod tests {
 stdenv.mkDerivation {
     nix.e$0
 }
-            ",
+",
             "enable",
         );
     }

crates/ide/src/tests.rs

@@ -182,7 +182,9 @@ impl Fixture {
 
     fn insert_file(&mut self, path: VfsPath, mut text: String) -> Result<()> {
         let file = FileId(self.files.len() as u32);
-        text.truncate(text.trim_end().len());
+        // Trim the last newline for simplicity. But whitespaces are kept since markers may be
+        // pointing to them.
+        text.truncate(text.trim_end_matches('\n').len());
         ensure!(
             self.files.insert(path.clone(), text).is_none(),
             "Duplicated path: {:?}",