mod generated; use expect_test::expect; use hir::Semantics; use ide_db::{ base_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt}, helpers::{ insert_use::{InsertUseConfig, MergeBehavior}, SnippetCap, }, source_change::FileSystemEdit, RootDatabase, }; use stdx::{format_to, trim_indent}; use syntax::TextRange; use test_utils::{assert_eq_text, extract_offset}; use crate::{handlers::Handler, Assist, AssistConfig, AssistContext, AssistKind, Assists}; pub(crate) const TEST_CONFIG: AssistConfig = AssistConfig { snippet_cap: SnippetCap::new(true), allowed: None, insert_use: InsertUseConfig { merge: Some(MergeBehavior::Full), prefix_kind: hir::PrefixKind::Plain, }, }; pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) { RootDatabase::with_single_file(text) } pub(crate) fn check_assist(assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str) { let ra_fixture_after = trim_indent(ra_fixture_after); check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), None); } // There is no way to choose what assist within a group you want to test against, // so this is here to allow you choose. pub(crate) fn check_assist_by_label( assist: Handler, ra_fixture_before: &str, ra_fixture_after: &str, label: &str, ) { let ra_fixture_after = trim_indent(ra_fixture_after); check(assist, ra_fixture_before, ExpectedResult::After(&ra_fixture_after), Some(label)); } // FIXME: instead of having a separate function here, maybe use // `extract_ranges` and mark the target as ` ` in the // fixture? #[track_caller] pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) { check(assist, ra_fixture, ExpectedResult::Target(target), None); } #[track_caller] pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) { check(assist, ra_fixture, ExpectedResult::NotApplicable, None); } #[track_caller] fn check_doc_test(assist_id: &str, before: &str, after: &str) { let after = trim_indent(after); let (db, file_id, selection) = RootDatabase::with_range_or_offset(&before); let before = db.file_text(file_id).to_string(); let frange = FileRange { file_id, range: selection.into() }; let assist = Assist::get(&db, &TEST_CONFIG, true, frange) .into_iter() .find(|assist| assist.id.0 == assist_id) .unwrap_or_else(|| { panic!( "\n\nAssist is not applicable: {}\nAvailable assists: {}", assist_id, Assist::get(&db, &TEST_CONFIG, false, frange) .into_iter() .map(|assist| assist.id.0) .collect::>() .join(", ") ) }); let actual = { let source_change = assist.source_change.unwrap(); let mut actual = before; if let Some(source_file_edit) = source_change.get_source_edit(file_id) { source_file_edit.apply(&mut actual); } actual }; assert_eq_text!(&after, &actual); } enum ExpectedResult<'a> { NotApplicable, After(&'a str), Target(&'a str), } #[track_caller] fn check(handler: Handler, before: &str, expected: ExpectedResult, assist_label: Option<&str>) { let (db, file_with_caret_id, range_or_offset) = RootDatabase::with_range_or_offset(before); let text_without_caret = db.file_text(file_with_caret_id).to_string(); let frange = FileRange { file_id: file_with_caret_id, range: range_or_offset.into() }; let sema = Semantics::new(&db); let config = TEST_CONFIG; let ctx = AssistContext::new(sema, &config, frange); let mut acc = Assists::new(&ctx, true); handler(&mut acc, &ctx); let mut res = acc.finish(); let assist = match assist_label { Some(label) => res.into_iter().find(|resolved| resolved.label == label), None => res.pop(), }; match (assist, expected) { (Some(assist), ExpectedResult::After(after)) => { let source_change = assist.source_change.unwrap(); assert!(!source_change.source_file_edits.is_empty()); let skip_header = source_change.source_file_edits.len() == 1 && source_change.file_system_edits.len() == 0; let mut buf = String::new(); for (file_id, edit) in source_change.source_file_edits { let mut text = db.file_text(file_id).as_ref().to_owned(); edit.apply(&mut text); if !skip_header { let sr = db.file_source_root(file_id); let sr = db.source_root(sr); let path = sr.path_for_file(&file_id).unwrap(); format_to!(buf, "//- {}\n", path) } buf.push_str(&text); } for file_system_edit in source_change.file_system_edits { if let FileSystemEdit::CreateFile { dst, initial_contents } = file_system_edit { let sr = db.file_source_root(dst.anchor); let sr = db.source_root(sr); let mut base = sr.path_for_file(&dst.anchor).unwrap().clone(); base.pop(); let created_file_path = format!("{}{}", base.to_string(), &dst.path[1..]); format_to!(buf, "//- {}\n", created_file_path); buf.push_str(&initial_contents); } } assert_eq_text!(after, &buf); } (Some(assist), ExpectedResult::Target(target)) => { let range = assist.target; assert_eq_text!(&text_without_caret[range], target); } (Some(_), ExpectedResult::NotApplicable) => panic!("assist should not be applicable!"), (None, ExpectedResult::After(_)) | (None, ExpectedResult::Target(_)) => { panic!("code action is not applicable") } (None, ExpectedResult::NotApplicable) => (), }; } fn labels(assists: &[Assist]) -> String { let mut labels = assists .iter() .map(|assist| { let mut label = match &assist.group { Some(g) => g.0.clone(), None => assist.label.to_string(), }; label.push('\n'); label }) .collect::>(); labels.dedup(); labels.into_iter().collect::() } #[test] fn assist_order_field_struct() { let before = "struct Foo { $0bar: u32 }"; let (before_cursor_pos, before) = extract_offset(before); let (db, file_id) = with_single_file(&before); let frange = FileRange { file_id, range: TextRange::empty(before_cursor_pos) }; let assists = Assist::get(&db, &TEST_CONFIG, false, frange); let mut assists = assists.iter(); assert_eq!(assists.next().expect("expected assist").label, "Change visibility to pub(crate)"); assert_eq!(assists.next().expect("expected assist").label, "Generate a mut getter method"); assert_eq!(assists.next().expect("expected assist").label, "Generate a getter method"); assert_eq!(assists.next().expect("expected assist").label, "Generate a setter method"); assert_eq!(assists.next().expect("expected assist").label, "Add `#[derive]`"); } #[test] fn assist_order_if_expr() { let (db, frange) = RootDatabase::with_range( r#" pub fn test_some_range(a: int) -> bool { if let 2..6 = $05$0 { true } else { false } } "#, ); let assists = Assist::get(&db, &TEST_CONFIG, false, frange); let expected = labels(&assists); expect![[r#" Convert integer base Extract into variable Extract into function Replace with match "#]] .assert_eq(&expected); } #[test] fn assist_filter_works() { let (db, frange) = RootDatabase::with_range( r#" pub fn test_some_range(a: int) -> bool { if let 2..6 = $05$0 { true } else { false } } "#, ); { let mut cfg = TEST_CONFIG; cfg.allowed = Some(vec![AssistKind::Refactor]); let assists = Assist::get(&db, &cfg, false, frange); let expected = labels(&assists); expect![[r#" Convert integer base Extract into variable Extract into function Replace with match "#]] .assert_eq(&expected); } { let mut cfg = TEST_CONFIG; cfg.allowed = Some(vec![AssistKind::RefactorExtract]); let assists = Assist::get(&db, &cfg, false, frange); let expected = labels(&assists); expect![[r#" Extract into variable Extract into function "#]] .assert_eq(&expected); } { let mut cfg = TEST_CONFIG; cfg.allowed = Some(vec![AssistKind::QuickFix]); let assists = Assist::get(&db, &cfg, false, frange); let expected = labels(&assists); expect![[r#""#]].assert_eq(&expected); } }