6 use ra_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt};
7 use ra_ide_db::{symbol_index::SymbolsDatabase, RootDatabase};
8 use ra_syntax::TextRange;
10 add_cursor, assert_eq_text, extract_offset, extract_range, extract_range_or_offset,
14 use crate::{handlers::Handler, resolved_assists, AssistCtx};
16 pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {
17 let (mut db, file_id) = RootDatabase::with_single_file(text);
18 // FIXME: ideally, this should be done by the above `RootDatabase::with_single_file`,
19 // but it looks like this might need specialization? :(
20 db.set_local_roots(Arc::new(vec![db.file_source_root(file_id)]));
24 pub(crate) fn check_assist(assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str) {
25 check(assist, ra_fixture_before, ExpectedResult::After(ra_fixture_after));
28 // FIXME: instead of having a separate function here, maybe use
29 // `extract_ranges` and mark the target as `<target> </target>` in the
31 pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) {
32 check(assist, ra_fixture, ExpectedResult::Target(target));
35 pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) {
36 check(assist, ra_fixture, ExpectedResult::NotApplicable);
39 fn check_doc_test(assist_id: &str, before: &str, after: &str) {
40 let (selection, before) = extract_range_or_offset(before);
41 let (db, file_id) = crate::tests::with_single_file(&before);
42 let frange = FileRange { file_id, range: selection.into() };
44 let mut assist = resolved_assists(&db, frange)
46 .find(|assist| assist.label.id.0 == assist_id)
49 "\n\nAssist is not applicable: {}\nAvailable assists: {}",
51 resolved_assists(&db, frange)
53 .map(|assist| assist.label.id.0)
60 let change = assist.source_change.source_file_edits.pop().unwrap();
61 let mut actual = before.clone();
62 change.edit.apply(&mut actual);
65 assert_eq_text!(after, &actual);
68 enum ExpectedResult<'a> {
74 fn check(assist: Handler, before: &str, expected: ExpectedResult) {
75 let (text_without_caret, file_with_caret_id, range_or_offset, db) = if before.contains("//-") {
76 let (mut db, position) = RootDatabase::with_position(before);
77 db.set_local_roots(Arc::new(vec![db.file_source_root(position.file_id)]));
79 db.file_text(position.file_id).as_ref().to_owned(),
81 RangeOrOffset::Offset(position.offset),
85 let (range_or_offset, text_without_caret) = extract_range_or_offset(before);
86 let (db, file_id) = with_single_file(&text_without_caret);
87 (text_without_caret, file_id, range_or_offset, db)
90 let frange = FileRange { file_id: file_with_caret_id, range: range_or_offset.into() };
92 let sema = Semantics::new(&db);
93 let assist_ctx = AssistCtx::new(&sema, frange, true);
95 match (assist(assist_ctx), expected) {
96 (Some(assist), ExpectedResult::After(after)) => {
97 let mut action = assist.0[0].source_change.clone().unwrap();
98 let change = action.source_file_edits.pop().unwrap();
100 let mut actual = db.file_text(change.file_id).as_ref().to_owned();
101 change.edit.apply(&mut actual);
103 match action.cursor_position {
105 if let RangeOrOffset::Offset(before_cursor_pos) = range_or_offset {
108 .apply_to_offset(before_cursor_pos)
109 .expect("cursor position is affected by the edit");
110 actual = add_cursor(&actual, off)
113 Some(off) => actual = add_cursor(&actual, off.offset),
116 assert_eq_text!(after, &actual);
118 (Some(assist), ExpectedResult::Target(target)) => {
119 let range = assist.0[0].label.target;
120 assert_eq_text!(&text_without_caret[range], target);
122 (Some(_), ExpectedResult::NotApplicable) => panic!("assist should not be applicable!"),
123 (None, ExpectedResult::After(_)) | (None, ExpectedResult::Target(_)) => {
124 panic!("code action is not applicable")
126 (None, ExpectedResult::NotApplicable) => (),
131 fn assist_order_field_struct() {
132 let before = "struct Foo { <|>bar: u32 }";
133 let (before_cursor_pos, before) = extract_offset(before);
134 let (db, file_id) = with_single_file(&before);
135 let frange = FileRange { file_id, range: TextRange::empty(before_cursor_pos) };
136 let assists = resolved_assists(&db, frange);
137 let mut assists = assists.iter();
140 assists.next().expect("expected assist").label.label,
141 "Change visibility to pub(crate)"
143 assert_eq!(assists.next().expect("expected assist").label.label, "Add `#[derive]`");
147 fn assist_order_if_expr() {
149 pub fn test_some_range(a: int) -> bool {
150 if let 2..6 = <|>5<|> {
156 let (range, before) = extract_range(before);
157 let (db, file_id) = with_single_file(&before);
158 let frange = FileRange { file_id, range };
159 let assists = resolved_assists(&db, frange);
160 let mut assists = assists.iter();
162 assert_eq!(assists.next().expect("expected assist").label.label, "Extract into variable");
163 assert_eq!(assists.next().expect("expected assist").label.label, "Replace with match");