3 use expect_test::expect;
6 base_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt},
8 insert_use::{InsertUseConfig, MergeBehavior},
11 source_change::FileSystemEdit,
14 use stdx::{format_to, trim_indent};
15 use syntax::TextRange;
16 use test_utils::{assert_eq_text, extract_offset};
18 use crate::{handlers::Handler, Assist, AssistConfig, AssistContext, AssistKind, Assists};
20 pub(crate) const TEST_CONFIG: AssistConfig = AssistConfig {
21 snippet_cap: SnippetCap::new(true),
23 insert_use: InsertUseConfig {
24 merge: Some(MergeBehavior::Full),
25 prefix_kind: hir::PrefixKind::Plain,
30 pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {
31 RootDatabase::with_single_file(text)
34 pub(crate) fn check_assist(assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str) {
35 let ra_fixture_after = trim_indent(ra_fixture_after);
36 check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), None);
39 // There is no way to choose what assist within a group you want to test against,
40 // so this is here to allow you choose.
41 pub(crate) fn check_assist_by_label(
43 ra_fixture_before: &str,
44 ra_fixture_after: &str,
47 let ra_fixture_after = trim_indent(ra_fixture_after);
48 check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), Some(label));
51 // FIXME: instead of having a separate function here, maybe use
52 // `extract_ranges` and mark the target as `<target> </target>` in the
55 pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) {
56 check(assist, ra_fixture, ExpectedResult::Target(target), None);
60 pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) {
61 check(assist, ra_fixture, ExpectedResult::NotApplicable, None);
65 fn check_doc_test(assist_id: &str, before: &str, after: &str) {
66 let after = trim_indent(after);
67 let (db, file_id, selection) = RootDatabase::with_range_or_offset(&before);
68 let before = db.file_text(file_id).to_string();
69 let frange = FileRange { file_id, range: selection.into() };
71 let assist = Assist::get(&db, &TEST_CONFIG, true, frange)
73 .find(|assist| assist.id.0 == assist_id)
76 "\n\nAssist is not applicable: {}\nAvailable assists: {}",
78 Assist::get(&db, &TEST_CONFIG, false, frange)
80 .map(|assist| assist.id.0)
87 let source_change = assist.source_change.unwrap();
88 let mut actual = before;
89 if let Some(source_file_edit) = source_change.get_source_edit(file_id) {
90 source_file_edit.apply(&mut actual);
94 assert_eq_text!(&after, &actual);
97 enum ExpectedResult<'a> {
104 fn check(handler: Handler, before: &str, expected: ExpectedResult, assist_label: Option<&str>) {
105 let (db, file_with_caret_id, range_or_offset) = RootDatabase::with_range_or_offset(before);
106 let text_without_caret = db.file_text(file_with_caret_id).to_string();
108 let frange = FileRange { file_id: file_with_caret_id, range: range_or_offset.into() };
110 let sema = Semantics::new(&db);
111 let config = TEST_CONFIG;
112 let ctx = AssistContext::new(sema, &config, frange);
113 let mut acc = Assists::new(&ctx, true);
114 handler(&mut acc, &ctx);
115 let mut res = acc.finish();
117 let assist = match assist_label {
118 Some(label) => res.into_iter().find(|resolved| resolved.label == label),
122 match (assist, expected) {
123 (Some(assist), ExpectedResult::After(after)) => {
124 let source_change = assist.source_change.unwrap();
125 assert!(!source_change.source_file_edits.is_empty());
126 let skip_header = source_change.source_file_edits.len() == 1
127 && source_change.file_system_edits.len() == 0;
129 let mut buf = String::new();
130 for (file_id, edit) in source_change.source_file_edits {
131 let mut text = db.file_text(file_id).as_ref().to_owned();
132 edit.apply(&mut text);
134 let sr = db.file_source_root(file_id);
135 let sr = db.source_root(sr);
136 let path = sr.path_for_file(&file_id).unwrap();
137 format_to!(buf, "//- {}\n", path)
142 for file_system_edit in source_change.file_system_edits {
143 if let FileSystemEdit::CreateFile { dst, initial_contents } = file_system_edit {
144 let sr = db.file_source_root(dst.anchor);
145 let sr = db.source_root(sr);
146 let mut base = sr.path_for_file(&dst.anchor).unwrap().clone();
148 let created_file_path = format!("{}{}", base.to_string(), &dst.path[1..]);
149 format_to!(buf, "//- {}\n", created_file_path);
150 buf.push_str(&initial_contents);
154 assert_eq_text!(after, &buf);
156 (Some(assist), ExpectedResult::Target(target)) => {
157 let range = assist.target;
158 assert_eq_text!(&text_without_caret[range], target);
160 (Some(_), ExpectedResult::NotApplicable) => panic!("assist should not be applicable!"),
161 (None, ExpectedResult::After(_)) | (None, ExpectedResult::Target(_)) => {
162 panic!("code action is not applicable")
164 (None, ExpectedResult::NotApplicable) => (),
168 fn labels(assists: &[Assist]) -> String {
169 let mut labels = assists
172 let mut label = match &assist.group {
173 Some(g) => g.0.clone(),
174 None => assist.label.to_string(),
179 .collect::<Vec<_>>();
181 labels.into_iter().collect::<String>()
185 fn assist_order_field_struct() {
186 let before = "struct Foo { $0bar: u32 }";
187 let (before_cursor_pos, before) = extract_offset(before);
188 let (db, file_id) = with_single_file(&before);
189 let frange = FileRange { file_id, range: TextRange::empty(before_cursor_pos) };
190 let assists = Assist::get(&db, &TEST_CONFIG, false, frange);
191 let mut assists = assists.iter();
193 assert_eq!(assists.next().expect("expected assist").label, "Change visibility to pub(crate)");
194 assert_eq!(assists.next().expect("expected assist").label, "Generate a mut getter method");
195 assert_eq!(assists.next().expect("expected assist").label, "Generate a getter method");
196 assert_eq!(assists.next().expect("expected assist").label, "Generate a setter method");
197 assert_eq!(assists.next().expect("expected assist").label, "Add `#[derive]`");
201 fn assist_order_if_expr() {
202 let (db, frange) = RootDatabase::with_range(
204 pub fn test_some_range(a: int) -> bool {
205 if let 2..6 = $05$0 {
214 let assists = Assist::get(&db, &TEST_CONFIG, false, frange);
215 let expected = labels(&assists);
219 Extract into variable
220 Extract into function
223 .assert_eq(&expected);
227 fn assist_filter_works() {
228 let (db, frange) = RootDatabase::with_range(
230 pub fn test_some_range(a: int) -> bool {
231 if let 2..6 = $05$0 {
240 let mut cfg = TEST_CONFIG;
241 cfg.allowed = Some(vec![AssistKind::Refactor]);
243 let assists = Assist::get(&db, &cfg, false, frange);
244 let expected = labels(&assists);
248 Extract into variable
249 Extract into function
252 .assert_eq(&expected);
256 let mut cfg = TEST_CONFIG;
257 cfg.allowed = Some(vec![AssistKind::RefactorExtract]);
258 let assists = Assist::get(&db, &cfg, false, frange);
259 let expected = labels(&assists);
262 Extract into variable
263 Extract into function
265 .assert_eq(&expected);
269 let mut cfg = TEST_CONFIG;
270 cfg.allowed = Some(vec![AssistKind::QuickFix]);
271 let assists = Assist::get(&db, &cfg, false, frange);
272 let expected = labels(&assists);
274 expect![[r#""#]].assert_eq(&expected);