chore(rust): add error reporting for position funcs

cli/src/tests/corpus_test.rs

@@ -187,7 +187,7 @@ fn test_language_corpus(language_name: &str, start_seed: usize, skipped: Option<
                 for _ in 0..1 + rand.unsigned(*EDIT_COUNT) {
                     let edit = get_random_edit(&mut rand, &input);
                     undo_stack.push(invert_edit(&input, &edit));
-                    perform_edit(&mut tree, &mut input, &edit);
+                    perform_edit(&mut tree, &mut input, &edit).unwrap();
                 }
 
                 if log_seed {
@@ -219,7 +219,7 @@ fn test_language_corpus(language_name: &str, start_seed: usize, skipped: Option<
 
                 // Undo all of the edits and re-parse again.
                 while let Some(edit) = undo_stack.pop() {
-                    perform_edit(&mut tree2, &mut input, &edit);
+                    perform_edit(&mut tree2, &mut input, &edit).unwrap();
                 }
                 if *LOG_GRAPH_ENABLED {
                     eprintln!("{}\n", String::from_utf8_lossy(&input));

cli/src/tests/node_test.rs

@@ -552,7 +552,7 @@ fn test_node_edit() {
 
         let edit = get_random_edit(&mut rand, &mut code);
         let mut tree2 = tree.clone();
-        let edit = perform_edit(&mut tree2, &mut code, &edit);
+        let edit = perform_edit(&mut tree2, &mut code, &edit).unwrap();
         for node in nodes_before.iter_mut() {
             node.edit(&edit);
         }

cli/src/tests/parser_test.rs

@@ -342,7 +342,8 @@ fn test_parsing_after_editing_beginning_of_code() {
             deleted_length: 0,
             inserted_text: b" || 5".to_vec(),
         },
-    );
+    )
+    .unwrap();
 
     let mut recorder = ReadRecorder::new(&code);
     let tree = parser
@@ -389,7 +390,8 @@ fn test_parsing_after_editing_end_of_code() {
             deleted_length: 0,
             inserted_text: b".d".to_vec(),
         },
-    );
+    )
+    .unwrap();
 
     let mut recorder = ReadRecorder::new(&code);
     let tree = parser
@@ -464,7 +466,8 @@ h + i
             deleted_length: 0,
             inserted_text: b"1234".to_vec(),
         },
-    );
+    )
+    .unwrap();
 
     assert_eq!(
         code,
@@ -528,12 +531,12 @@ fn test_parsing_after_detecting_error_in_the_middle_of_a_string_token() {
     let undo = invert_edit(&source, &edit);
 
     let mut tree2 = tree.clone();
-    perform_edit(&mut tree2, &mut source, &edit);
+    perform_edit(&mut tree2, &mut source, &edit).unwrap();
     tree2 = parser.parse(&source, Some(&tree2)).unwrap();
     assert!(tree2.root_node().has_error());
 
     let mut tree3 = tree2.clone();
-    perform_edit(&mut tree3, &mut source, &undo);
+    perform_edit(&mut tree3, &mut source, &undo).unwrap();
     tree3 = parser.parse(&source, Some(&tree3)).unwrap();
     assert_eq!(tree3.root_node().to_sexp(), tree.root_node().to_sexp(),);
 }

cli/src/tests/tree_test.rs

@@ -663,7 +663,7 @@ fn get_changed_ranges(
     source_code: &mut Vec<u8>,
     edit: Edit,
 ) -> Vec<Range> {
-    perform_edit(tree, source_code, &edit);
+    perform_edit(tree, source_code, &edit).unwrap();
     let new_tree = parser.parse(&source_code, Some(tree)).unwrap();
     let result = tree.changed_ranges(&new_tree).collect();
     *tree = new_tree;