rust/crates/ra_ide_api/src/test_utils.rs
2019-09-30 11:58:53 +03:00

22 lines
715 B
Rust

//! FIXME: write short doc here
use ra_syntax::{SourceFile, TextUnit};
use ra_text_edit::TextEdit;
pub use test_utils::*;
pub fn check_action<F: Fn(&SourceFile, TextUnit) -> Option<TextEdit>>(
before: &str,
after: &str,
f: F,
) {
let (before_cursor_pos, before) = extract_offset(before);
let file = SourceFile::parse(&before).ok().unwrap();
let result = f(&file, before_cursor_pos).expect("code action is not applicable");
let actual = result.apply(&before);
let actual_cursor_pos =
result.apply_to_offset(before_cursor_pos).expect("cursor position is affected by the edit");
let actual = add_cursor(&actual, actual_cursor_pos);
assert_eq_text!(after, &actual);
}