6 use ra_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt};
7 use ra_ide_db::{symbol_index::SymbolsDatabase, RootDatabase};
8 use ra_syntax::TextRange;
10 assert_eq_text, extract_offset, extract_range, extract_range_or_offset, RangeOrOffset,
13 use crate::{handlers::Handler, Assist, AssistConfig, AssistContext, Assists};
15 pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {
16 let (mut db, file_id) = RootDatabase::with_single_file(text);
17 // FIXME: ideally, this should be done by the above `RootDatabase::with_single_file`,
18 // but it looks like this might need specialization? :(
19 db.set_local_roots(Arc::new(vec![db.file_source_root(file_id)]));
23 pub(crate) fn check_assist(assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str) {
24 check(assist, ra_fixture_before, ExpectedResult::After(ra_fixture_after));
27 // FIXME: instead of having a separate function here, maybe use
28 // `extract_ranges` and mark the target as `<target> </target>` in the
30 pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) {
31 check(assist, ra_fixture, ExpectedResult::Target(target));
34 pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) {
35 check(assist, ra_fixture, ExpectedResult::NotApplicable);
38 fn check_doc_test(assist_id: &str, before: &str, after: &str) {
39 let (selection, before) = extract_range_or_offset(before);
40 let (db, file_id) = crate::tests::with_single_file(&before);
41 let frange = FileRange { file_id, range: selection.into() };
43 let mut assist = Assist::resolved(&db, &AssistConfig::default(), frange)
45 .find(|assist| assist.assist.id.0 == assist_id)
48 "\n\nAssist is not applicable: {}\nAvailable assists: {}",
50 Assist::resolved(&db, &AssistConfig::default(), frange)
52 .map(|assist| assist.assist.id.0)
59 let change = assist.source_change.source_file_edits.pop().unwrap();
60 let mut actual = before.clone();
61 change.edit.apply(&mut actual);
64 assert_eq_text!(after, &actual);
67 enum ExpectedResult<'a> {
73 fn check(handler: Handler, before: &str, expected: ExpectedResult) {
74 let (text_without_caret, file_with_caret_id, range_or_offset, db) = if before.contains("//-") {
75 let (mut db, position) = RootDatabase::with_position(before);
76 db.set_local_roots(Arc::new(vec![db.file_source_root(position.file_id)]));
78 db.file_text(position.file_id).as_ref().to_owned(),
80 RangeOrOffset::Offset(position.offset),
84 let (range_or_offset, text_without_caret) = extract_range_or_offset(before);
85 let (db, file_id) = with_single_file(&text_without_caret);
86 (text_without_caret, file_id, range_or_offset, db)
89 let frange = FileRange { file_id: file_with_caret_id, range: range_or_offset.into() };
91 let sema = Semantics::new(&db);
92 let config = AssistConfig::default();
93 let ctx = AssistContext::new(sema, &config, frange);
94 let mut acc = Assists::new_resolved(&ctx);
95 handler(&mut acc, &ctx);
96 let mut res = acc.finish_resolved();
97 let assist = res.pop();
98 match (assist, expected) {
99 (Some(assist), ExpectedResult::After(after)) => {
100 let mut source_change = assist.source_change;
101 let change = source_change.source_file_edits.pop().unwrap();
103 let mut actual = db.file_text(change.file_id).as_ref().to_owned();
104 change.edit.apply(&mut actual);
105 assert_eq_text!(after, &actual);
107 (Some(assist), ExpectedResult::Target(target)) => {
108 let range = assist.assist.target;
109 assert_eq_text!(&text_without_caret[range], target);
111 (Some(_), ExpectedResult::NotApplicable) => panic!("assist should not be applicable!"),
112 (None, ExpectedResult::After(_)) | (None, ExpectedResult::Target(_)) => {
113 panic!("code action is not applicable")
115 (None, ExpectedResult::NotApplicable) => (),
120 fn assist_order_field_struct() {
121 let before = "struct Foo { <|>bar: u32 }";
122 let (before_cursor_pos, before) = extract_offset(before);
123 let (db, file_id) = with_single_file(&before);
124 let frange = FileRange { file_id, range: TextRange::empty(before_cursor_pos) };
125 let assists = Assist::resolved(&db, &AssistConfig::default(), frange);
126 let mut assists = assists.iter();
129 assists.next().expect("expected assist").assist.label,
130 "Change visibility to pub(crate)"
132 assert_eq!(assists.next().expect("expected assist").assist.label, "Add `#[derive]`");
136 fn assist_order_if_expr() {
138 pub fn test_some_range(a: int) -> bool {
139 if let 2..6 = <|>5<|> {
145 let (range, before) = extract_range(before);
146 let (db, file_id) = with_single_file(&before);
147 let frange = FileRange { file_id, range };
148 let assists = Assist::resolved(&db, &AssistConfig::default(), frange);
149 let mut assists = assists.iter();
151 assert_eq!(assists.next().expect("expected assist").assist.label, "Extract into variable");
152 assert_eq!(assists.next().expect("expected assist").assist.label, "Replace with match");