4 use ide_db::base_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt};
5 use ide_db::source_change::FileSystemEdit;
6 use ide_db::RootDatabase;
8 use test_utils::{assert_eq_text, extract_offset, extract_range};
10 use crate::{handlers::Handler, Assist, AssistConfig, AssistContext, AssistKind, Assists};
11 use stdx::{format_to, trim_indent};
13 pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {
14 RootDatabase::with_single_file(text)
17 pub(crate) fn check_assist(assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str) {
18 let ra_fixture_after = trim_indent(ra_fixture_after);
19 check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), None);
22 // There is no way to choose what assist within a group you want to test against,
23 // so this is here to allow you choose.
24 pub(crate) fn check_assist_by_label(
26 ra_fixture_before: &str,
27 ra_fixture_after: &str,
30 let ra_fixture_after = trim_indent(ra_fixture_after);
31 check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), Some(label));
34 // FIXME: instead of having a separate function here, maybe use
35 // `extract_ranges` and mark the target as `<target> </target>` in the
37 pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) {
38 check(assist, ra_fixture, ExpectedResult::Target(target), None);
41 pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) {
42 check(assist, ra_fixture, ExpectedResult::NotApplicable, None);
45 fn check_doc_test(assist_id: &str, before: &str, after: &str) {
46 let after = trim_indent(after);
47 let (db, file_id, selection) = RootDatabase::with_range_or_offset(&before);
48 let before = db.file_text(file_id).to_string();
49 let frange = FileRange { file_id, range: selection.into() };
51 let assist = Assist::get(&db, &AssistConfig::default(), true, frange)
53 .find(|assist| assist.id.0 == assist_id)
56 "\n\nAssist is not applicable: {}\nAvailable assists: {}",
58 Assist::get(&db, &AssistConfig::default(), false, frange)
60 .map(|assist| assist.id.0)
67 let source_change = assist.source_change.unwrap();
68 let mut actual = before;
69 for source_file_edit in source_change.source_file_edits {
70 if source_file_edit.file_id == file_id {
71 source_file_edit.edit.apply(&mut actual)
76 assert_eq_text!(&after, &actual);
79 enum ExpectedResult<'a> {
85 fn check(handler: Handler, before: &str, expected: ExpectedResult, assist_label: Option<&str>) {
86 let (db, file_with_caret_id, range_or_offset) = RootDatabase::with_range_or_offset(before);
87 let text_without_caret = db.file_text(file_with_caret_id).to_string();
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(&ctx, true);
95 handler(&mut acc, &ctx);
96 let mut res = acc.finish();
98 let assist = match assist_label {
99 Some(label) => res.into_iter().find(|resolved| resolved.label == label),
103 match (assist, expected) {
104 (Some(assist), ExpectedResult::After(after)) => {
105 let mut source_change = assist.source_change.unwrap();
106 assert!(!source_change.source_file_edits.is_empty());
107 let skip_header = source_change.source_file_edits.len() == 1
108 && source_change.file_system_edits.len() == 0;
109 source_change.source_file_edits.sort_by_key(|it| it.file_id);
111 let mut buf = String::new();
112 for source_file_edit in source_change.source_file_edits {
113 let mut text = db.file_text(source_file_edit.file_id).as_ref().to_owned();
114 source_file_edit.edit.apply(&mut text);
116 let sr = db.file_source_root(source_file_edit.file_id);
117 let sr = db.source_root(sr);
118 let path = sr.path_for_file(&source_file_edit.file_id).unwrap();
119 format_to!(buf, "//- {}\n", path)
124 for file_system_edit in source_change.file_system_edits.clone() {
125 match file_system_edit {
126 FileSystemEdit::CreateFile { dst, initial_contents } => {
127 let sr = db.file_source_root(dst.anchor);
128 let sr = db.source_root(sr);
129 let mut base = sr.path_for_file(&dst.anchor).unwrap().clone();
131 let created_file_path = format!("{}{}", base.to_string(), &dst.path[1..]);
132 format_to!(buf, "//- {}\n", created_file_path);
133 buf.push_str(&initial_contents);
139 assert_eq_text!(after, &buf);
141 (Some(assist), ExpectedResult::Target(target)) => {
142 let range = assist.target;
143 assert_eq_text!(&text_without_caret[range], target);
145 (Some(_), ExpectedResult::NotApplicable) => panic!("assist should not be applicable!"),
146 (None, ExpectedResult::After(_)) | (None, ExpectedResult::Target(_)) => {
147 panic!("code action is not applicable")
149 (None, ExpectedResult::NotApplicable) => (),
154 fn assist_order_field_struct() {
155 let before = "struct Foo { <|>bar: u32 }";
156 let (before_cursor_pos, before) = extract_offset(before);
157 let (db, file_id) = with_single_file(&before);
158 let frange = FileRange { file_id, range: TextRange::empty(before_cursor_pos) };
159 let assists = Assist::get(&db, &AssistConfig::default(), false, frange);
160 let mut assists = assists.iter();
162 assert_eq!(assists.next().expect("expected assist").label, "Change visibility to pub(crate)");
163 assert_eq!(assists.next().expect("expected assist").label, "Add `#[derive]`");
167 fn assist_order_if_expr() {
169 pub fn test_some_range(a: int) -> bool {
170 if let 2..6 = <|>5<|> {
176 let (range, before) = extract_range(before);
177 let (db, file_id) = with_single_file(&before);
178 let frange = FileRange { file_id, range };
179 let assists = Assist::get(&db, &AssistConfig::default(), false, frange);
180 let mut assists = assists.iter();
182 assert_eq!(assists.next().expect("expected assist").label, "Extract into variable");
183 assert_eq!(assists.next().expect("expected assist").label, "Replace with match");
187 fn assist_filter_works() {
189 pub fn test_some_range(a: int) -> bool {
190 if let 2..6 = <|>5<|> {
196 let (range, before) = extract_range(before);
197 let (db, file_id) = with_single_file(&before);
198 let frange = FileRange { file_id, range };
201 let mut cfg = AssistConfig::default();
202 cfg.allowed = Some(vec![AssistKind::Refactor]);
204 let assists = Assist::get(&db, &cfg, false, frange);
205 let mut assists = assists.iter();
207 assert_eq!(assists.next().expect("expected assist").label, "Extract into variable");
208 assert_eq!(assists.next().expect("expected assist").label, "Replace with match");
212 let mut cfg = AssistConfig::default();
213 cfg.allowed = Some(vec![AssistKind::RefactorExtract]);
214 let assists = Assist::get(&db, &cfg, false, frange);
215 assert_eq!(assists.len(), 1);
217 let mut assists = assists.iter();
218 assert_eq!(assists.next().expect("expected assist").label, "Extract into variable");
222 let mut cfg = AssistConfig::default();
223 cfg.allowed = Some(vec![AssistKind::QuickFix]);
224 let assists = Assist::get(&db, &cfg, false, frange);
225 assert!(assists.is_empty(), "All asserts but quickfixes should be filtered out");