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//! Runs completion for testing purposes.
use hir::Semantics;
use itertools::Itertools;
use stdx::{format_to, trim_indent};
use syntax::{AstNode, NodeOrToken, SyntaxElement};
use test_utils::assert_eq_text;
use crate::{
completion::{completion_item::CompletionKind, CompletionConfig},
mock_analysis::analysis_and_position,
CompletionItem,
};
pub(crate) fn do_completion(code: &str, kind: CompletionKind) -> Vec<CompletionItem> {
do_completion_with_config(CompletionConfig::default(), code, kind)
}
pub(crate) fn do_completion_with_config(
config: CompletionConfig,
code: &str,
kind: CompletionKind,
) -> Vec<CompletionItem> {
let mut kind_completions: Vec<CompletionItem> = get_all_completion_items(config, code)
.into_iter()
.filter(|c| c.completion_kind == kind)
.collect();
kind_completions.sort_by(|l, r| l.label().cmp(r.label()));
kind_completions
}
pub(crate) fn completion_list(code: &str, kind: CompletionKind) -> String {
completion_list_with_config(CompletionConfig::default(), code, kind)
}
pub(crate) fn completion_list_with_config(
config: CompletionConfig,
code: &str,
kind: CompletionKind,
) -> String {
let mut kind_completions: Vec<CompletionItem> = get_all_completion_items(config, code)
.into_iter()
.filter(|c| c.completion_kind == kind)
.collect();
kind_completions.sort_by_key(|c| c.label().to_owned());
let label_width = kind_completions
.iter()
.map(|it| monospace_width(it.label()))
.max()
.unwrap_or_default()
.min(16);
kind_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);
}
format_to!(buf, "\n");
buf
})
.collect()
}
fn monospace_width(s: &str) -> usize {
s.chars().count()
}
pub(crate) fn check_edit(what: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
check_edit_with_config(CompletionConfig::default(), 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 (analysis, position) = analysis_and_position(ra_fixture_before);
let completions: Vec<CompletionItem> =
analysis.completions(&config, position).unwrap().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 = analysis.file_text(position.file_id).unwrap().to_string();
completion.text_edit().apply(&mut actual);
assert_eq_text!(&ra_fixture_after, &actual)
}
pub(crate) fn check_pattern_is_applicable(code: &str, check: fn(SyntaxElement) -> bool) {
let (analysis, pos) = analysis_and_position(code);
analysis
.with_db(|db| {
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)));
})
.unwrap();
}
pub(crate) fn get_all_completion_items(
config: CompletionConfig,
code: &str,
) -> Vec<CompletionItem> {
let (analysis, position) = analysis_and_position(code);
analysis.completions(&config, position).unwrap().unwrap().into()
}
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