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|
//! Tests and test utilities for completions.
//!
//! Most tests live in this module or its submodules unless for very specific completions like
//! `attributes` or `lifetimes` where the completed concept is a distinct thing.
//! Notable examples for completions that are being tested in this module's submodule are paths.
mod item_list;
mod use_tree;
mod items;
use hir::{PrefixKind, Semantics};
use ide_db::{
base_db::{fixture::ChangeFixture, FileLoader, FilePosition},
helpers::{
insert_use::{ImportGranularity, InsertUseConfig},
SnippetCap,
},
RootDatabase,
};
use itertools::Itertools;
use stdx::{format_to, trim_indent};
use syntax::{AstNode, NodeOrToken, SyntaxElement};
use test_utils::assert_eq_text;
use crate::{item::CompletionKind, CompletionConfig, CompletionItem};
pub(crate) const TEST_CONFIG: CompletionConfig = CompletionConfig {
enable_postfix_completions: true,
enable_imports_on_the_fly: true,
enable_self_on_the_fly: true,
add_call_parenthesis: true,
add_call_argument_snippets: true,
snippet_cap: SnippetCap::new(true),
insert_use: InsertUseConfig {
granularity: ImportGranularity::Crate,
prefix_kind: PrefixKind::Plain,
enforce_granularity: true,
group: true,
},
};
pub(crate) fn completion_list(code: &str) -> String {
completion_list_with_config(TEST_CONFIG, code)
}
fn completion_list_with_config(config: CompletionConfig, code: &str) -> String {
render_completion_list(get_all_items(config, code))
}
/// Creates analysis from a multi-file fixture, returns positions marked with $0.
pub(crate) fn position(ra_fixture: &str) -> (RootDatabase, FilePosition) {
let change_fixture = ChangeFixture::parse(ra_fixture);
let mut database = RootDatabase::default();
database.apply_change(change_fixture.change);
let (file_id, range_or_offset) = change_fixture.file_position.expect("expected a marker ($0)");
let offset = range_or_offset.expect_offset();
(database, FilePosition { file_id, offset })
}
pub(crate) fn do_completion(code: &str, kind: CompletionKind) -> Vec<CompletionItem> {
do_completion_with_config(TEST_CONFIG, code, kind)
}
pub(crate) fn do_completion_with_config(
config: CompletionConfig,
code: &str,
kind: CompletionKind,
) -> Vec<CompletionItem> {
get_all_items(config, code)
.into_iter()
.filter(|c| c.completion_kind == kind)
.sorted_by(|l, r| l.label().cmp(r.label()))
.collect()
}
pub(crate) fn filtered_completion_list(code: &str, kind: CompletionKind) -> String {
filtered_completion_list_with_config(TEST_CONFIG, code, kind)
}
pub(crate) fn filtered_completion_list_with_config(
config: CompletionConfig,
code: &str,
kind: CompletionKind,
) -> String {
let kind_completions: Vec<CompletionItem> =
get_all_items(config, code).into_iter().filter(|c| c.completion_kind == kind).collect();
render_completion_list(kind_completions)
}
fn render_completion_list(completions: Vec<CompletionItem>) -> String {
fn monospace_width(s: &str) -> usize {
s.chars().count()
}
let label_width =
completions.iter().map(|it| monospace_width(it.label())).max().unwrap_or_default().min(16);
completions
.into_iter()
.map(|it| {
let tag = it.kind().unwrap().tag();
let var_name = format!("{} {}", tag, it.label());
let mut buf = var_name;
if let Some(detail) = it.detail() {
let width = label_width.saturating_sub(monospace_width(it.label()));
format_to!(buf, "{:width$} {}", "", detail, width = width);
}
if it.deprecated() {
format_to!(buf, " DEPRECATED");
}
format_to!(buf, "\n");
buf
})
.collect()
}
pub(crate) fn check_edit(what: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
check_edit_with_config(TEST_CONFIG, what, ra_fixture_before, ra_fixture_after)
}
pub(crate) fn check_edit_with_config(
config: CompletionConfig,
what: &str,
ra_fixture_before: &str,
ra_fixture_after: &str,
) {
let ra_fixture_after = trim_indent(ra_fixture_after);
let (db, position) = position(ra_fixture_before);
let completions: Vec<CompletionItem> =
crate::completions(&db, &config, position).unwrap().into();
let (completion,) = completions
.iter()
.filter(|it| it.lookup() == what)
.collect_tuple()
.unwrap_or_else(|| panic!("can't find {:?} completion in {:#?}", what, completions));
let mut actual = db.file_text(position.file_id).to_string();
let mut combined_edit = completion.text_edit().to_owned();
if let Some(import_text_edit) =
completion.import_to_add().and_then(|edit| edit.to_text_edit(config.insert_use))
{
combined_edit.union(import_text_edit).expect(
"Failed to apply completion resolve changes: change ranges overlap, but should not",
)
}
combined_edit.apply(&mut actual);
assert_eq_text!(&ra_fixture_after, &actual)
}
pub(crate) fn check_pattern_is_applicable(code: &str, check: impl FnOnce(SyntaxElement) -> bool) {
let (db, pos) = position(code);
let sema = Semantics::new(&db);
let original_file = sema.parse(pos.file_id);
let token = original_file.syntax().token_at_offset(pos.offset).left_biased().unwrap();
assert!(check(NodeOrToken::Token(token)));
}
pub(crate) fn check_pattern_is_not_applicable(code: &str, check: fn(SyntaxElement) -> bool) {
let (db, pos) = position(code);
let sema = Semantics::new(&db);
let original_file = sema.parse(pos.file_id);
let token = original_file.syntax().token_at_offset(pos.offset).left_biased().unwrap();
assert!(!check(NodeOrToken::Token(token)));
}
pub(crate) fn get_all_items(config: CompletionConfig, code: &str) -> Vec<CompletionItem> {
let (db, position) = position(code);
crate::completions(&db, &config, position).unwrap().into()
}
fn check_no_completion(ra_fixture: &str) {
let (db, position) = position(ra_fixture);
assert!(
crate::completions(&db, &TEST_CONFIG, position).is_none(),
"Completions were generated, but weren't expected"
);
}
#[test]
fn test_no_completions_required() {
cov_mark::check!(no_completion_required);
check_no_completion(r#"fn foo() { for i i$0 }"#);
}
|
