Update file structure tests

crates/ra_ide/src/display/structure.rs

@@ -173,12 +173,19 @@ fn structure_node(node: &SyntaxNode) -> Option<StructureNode> {
 
 #[cfg(test)]
 mod tests {
+    use expect::{expect, Expect};
+
     use super::*;
-    use insta::assert_debug_snapshot;
+
+    fn check(ra_fixture: &str, expect: Expect) {
+        let file = SourceFile::parse(ra_fixture).ok().unwrap();
+        let structure = file_structure(&file);
+        expect.assert_debug_eq(&structure)
+    }
 
     #[test]
     fn test_file_structure() {
-        let file = SourceFile::parse(
+        check(
             r#"
 struct Foo {
     x: i32
@@ -223,12 +230,7 @@ fn obsolete() {}
 #[deprecated(note = "for awhile")]
 fn very_obsolete() {}
 "#,
-        )
+            expect![[r#"
-        .ok()
-        .unwrap();
-        let structure = file_structure(&file);
-        assert_debug_snapshot!(structure,
-        @r###"
                 [
                     StructureNode {
                         parent: None,
@@ -432,7 +434,7 @@ fn very_obsolete() {}
                         deprecated: true,
                     },
                 ]
-        "###
+            "#]],
         );
     }
 }