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//! FIXME: write short doc here
use ra_syntax::{SourceFile, TextSize};
use ra_text_edit::TextEdit;
pub use test_utils::*;
pub fn check_action<F: Fn(&SourceFile, TextSize) -> 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 = {
let mut actual = before.to_string();
result.apply(&mut actual);
actual
};
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);
}
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