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mod generated;
use hir::Semantics;
use ide_db::base_db::{fixture::WithFixture, FileId, FileRange, SourceDatabaseExt};
use ide_db::RootDatabase;
use syntax::TextRange;
use test_utils::{assert_eq_text, extract_offset, extract_range};
use crate::{handlers::Handler, Assist, AssistConfig, AssistContext, AssistKind, Assists};
use stdx::{format_to, trim_indent};
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 `<target> </target>` in the
// fixture?
pub(crate) fn check_assist_target(assist: Handler, ra_fixture: &str, target: &str) {
check(assist, ra_fixture, ExpectedResult::Target(target), None);
}
pub(crate) fn check_assist_not_applicable(assist: Handler, ra_fixture: &str) {
check(assist, ra_fixture, ExpectedResult::NotApplicable, None);
}
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 mut assist = Assist::resolved(&db, &AssistConfig::default(), frange)
.into_iter()
.find(|assist| assist.assist.id.0 == assist_id)
.unwrap_or_else(|| {
panic!(
"\n\nAssist is not applicable: {}\nAvailable assists: {}",
assist_id,
Assist::resolved(&db, &AssistConfig::default(), frange)
.into_iter()
.map(|assist| assist.assist.id.0)
.collect::<Vec<_>>()
.join(", ")
)
});
let actual = {
let change = assist.source_change.source_file_edits.pop().unwrap();
let mut actual = before;
change.edit.apply(&mut actual);
actual
};
assert_eq_text!(&after, &actual);
}
enum ExpectedResult<'a> {
NotApplicable,
After(&'a str),
Target(&'a str),
}
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 = AssistConfig::default();
let ctx = AssistContext::new(sema, &config, frange);
let mut acc = Assists::new_resolved(&ctx);
handler(&mut acc, &ctx);
let mut res = acc.finish_resolved();
let assist = match assist_label {
Some(label) => res.into_iter().find(|resolved| resolved.assist.label == label),
None => res.pop(),
};
match (assist, expected) {
(Some(assist), ExpectedResult::After(after)) => {
let mut source_change = assist.source_change;
assert!(!source_change.source_file_edits.is_empty());
let skip_header = source_change.source_file_edits.len() == 1;
source_change.source_file_edits.sort_by_key(|it| it.file_id);
let mut buf = String::new();
for source_file_edit in source_change.source_file_edits {
let mut text = db.file_text(source_file_edit.file_id).as_ref().to_owned();
source_file_edit.edit.apply(&mut text);
if !skip_header {
let sr = db.file_source_root(source_file_edit.file_id);
let sr = db.source_root(sr);
let path = sr.path_for_file(&source_file_edit.file_id).unwrap();
format_to!(buf, "//- {}\n", path)
}
buf.push_str(&text);
}
assert_eq_text!(after, &buf);
}
(Some(assist), ExpectedResult::Target(target)) => {
let range = assist.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) => (),
};
}
#[test]
fn assist_order_field_struct() {
let before = "struct Foo { <|>bar: 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::resolved(&db, &AssistConfig::default(), frange);
let mut assists = assists.iter();
assert_eq!(
assists.next().expect("expected assist").assist.label,
"Change visibility to pub(crate)"
);
assert_eq!(assists.next().expect("expected assist").assist.label, "Add `#[derive]`");
}
#[test]
fn assist_order_if_expr() {
let before = "
pub fn test_some_range(a: int) -> bool {
if let 2..6 = <|>5<|> {
true
} else {
false
}
}";
let (range, before) = extract_range(before);
let (db, file_id) = with_single_file(&before);
let frange = FileRange { file_id, range };
let assists = Assist::resolved(&db, &AssistConfig::default(), frange);
let mut assists = assists.iter();
assert_eq!(assists.next().expect("expected assist").assist.label, "Extract into variable");
assert_eq!(assists.next().expect("expected assist").assist.label, "Replace with match");
}
#[test]
fn assist_filter_works() {
let before = "
pub fn test_some_range(a: int) -> bool {
if let 2..6 = <|>5<|> {
true
} else {
false
}
}";
let (range, before) = extract_range(before);
let (db, file_id) = with_single_file(&before);
let frange = FileRange { file_id, range };
{
let mut cfg = AssistConfig::default();
cfg.allowed = Some(vec![AssistKind::Refactor]);
let assists = Assist::resolved(&db, &cfg, frange);
let mut assists = assists.iter();
assert_eq!(assists.next().expect("expected assist").assist.label, "Extract into variable");
assert_eq!(assists.next().expect("expected assist").assist.label, "Replace with match");
}
{
let mut cfg = AssistConfig::default();
cfg.allowed = Some(vec![AssistKind::RefactorExtract]);
let assists = Assist::resolved(&db, &cfg, frange);
assert_eq!(assists.len(), 1);
let mut assists = assists.iter();
assert_eq!(assists.next().expect("expected assist").assist.label, "Extract into variable");
}
{
let mut cfg = AssistConfig::default();
cfg.allowed = Some(vec![AssistKind::QuickFix]);
let assists = Assist::resolved(&db, &cfg, frange);
assert!(assists.is_empty(), "All asserts but quickfixes should be filtered out");
}
}
|
