rust/crates/rust-analyzer/tests/slow-tests/tidy.rs
2022-07-24 10:38:28 +02:00

474 lines
14 KiB
Rust

use std::{
collections::HashSet,
path::{Path, PathBuf},
};
use xshell::Shell;
#[cfg(not(feature = "in-rust-tree"))]
use xshell::cmd;
#[cfg(not(feature = "in-rust-tree"))]
#[test]
fn check_code_formatting() {
let sh = &Shell::new().unwrap();
sh.change_dir(sourcegen::project_root());
sh.set_var("RUSTUP_TOOLCHAIN", "stable");
let out = cmd!(sh, "rustfmt --version").read().unwrap();
if !out.contains("stable") {
panic!(
"Failed to run rustfmt from toolchain 'stable'. \
Please run `rustup component add rustfmt --toolchain stable` to install it.",
)
}
let res = cmd!(sh, "cargo fmt -- --check").run();
if res.is_err() {
let _ = cmd!(sh, "cargo fmt").run();
}
res.unwrap()
}
#[test]
fn check_lsp_extensions_docs() {
let sh = &Shell::new().unwrap();
let expected_hash = {
let lsp_ext_rs = sh
.read_file(sourcegen::project_root().join("crates/rust-analyzer/src/lsp_ext.rs"))
.unwrap();
stable_hash(lsp_ext_rs.as_str())
};
let actual_hash = {
let lsp_extensions_md =
sh.read_file(sourcegen::project_root().join("docs/dev/lsp-extensions.md")).unwrap();
let text = lsp_extensions_md
.lines()
.find_map(|line| line.strip_prefix("lsp_ext.rs hash:"))
.unwrap()
.trim();
u64::from_str_radix(text, 16).unwrap()
};
if actual_hash != expected_hash {
panic!(
"
lsp_ext.rs was changed without touching lsp-extensions.md.
Expected hash: {:x}
Actual hash: {:x}
Please adjust docs/dev/lsp-extensions.md.
",
expected_hash, actual_hash
)
}
}
#[test]
fn files_are_tidy() {
let sh = &Shell::new().unwrap();
let files = sourcegen::list_files(&sourcegen::project_root().join("crates"));
let mut tidy_docs = TidyDocs::default();
let mut tidy_marks = TidyMarks::default();
for path in files {
let extension = path.extension().unwrap_or_default().to_str().unwrap_or_default();
match extension {
"rs" => {
let text = sh.read_file(&path).unwrap();
check_todo(&path, &text);
check_dbg(&path, &text);
check_test_attrs(&path, &text);
check_trailing_ws(&path, &text);
deny_clippy(&path, &text);
tidy_docs.visit(&path, &text);
tidy_marks.visit(&path, &text);
}
"toml" => {
let text = sh.read_file(&path).unwrap();
check_cargo_toml(&path, text);
}
_ => (),
}
}
tidy_docs.finish();
tidy_marks.finish();
}
fn check_cargo_toml(path: &Path, text: String) {
let mut section = None;
for (line_no, text) in text.lines().enumerate() {
let text = text.trim();
if text.starts_with('[') {
if !text.ends_with(']') {
panic!(
"\nplease don't add comments or trailing whitespace in section lines.\n\
{}:{}\n",
path.display(),
line_no + 1
)
}
section = Some(text);
continue;
}
let text: String = text.split_whitespace().collect();
if !text.contains("path=") {
continue;
}
match section {
Some(s) if s.contains("dev-dependencies") => {
if text.contains("version") {
panic!(
"\ncargo internal dev-dependencies should not have a version.\n\
{}:{}\n",
path.display(),
line_no + 1
);
}
}
Some(s) if s.contains("dependencies") => {
if !text.contains("version") {
panic!(
"\ncargo internal dependencies should have a version.\n\
{}:{}\n",
path.display(),
line_no + 1
);
}
}
_ => {}
}
}
}
fn deny_clippy(path: &Path, text: &str) {
let ignore = &[
// The documentation in string literals may contain anything for its own purposes
"ide-db/src/generated/lints.rs",
// The tests test clippy lint hovers
"ide/src/hover/tests.rs",
// The tests test clippy lint completions
"ide-completion/src/tests/attribute.rs",
];
if ignore.iter().any(|p| path.ends_with(p)) {
return;
}
if text.contains("\u{61}llow(clippy") {
panic!(
"\n\nallowing lints is forbidden: {}.
rust-analyzer intentionally doesn't check clippy on CI.
You can allow lint globally via `xtask clippy`.
See https://github.com/rust-lang/rust-clippy/issues/5537 for discussion.
",
path.display()
)
}
}
#[cfg(not(feature = "in-rust-tree"))]
#[test]
fn check_licenses() {
let sh = &Shell::new().unwrap();
let expected = "
0BSD OR MIT OR Apache-2.0
Apache-2.0
Apache-2.0 OR BSL-1.0
Apache-2.0 OR MIT
Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT
Apache-2.0/MIT
BSD-3-Clause
BlueOak-1.0.0 OR MIT OR Apache-2.0
CC0-1.0 OR Artistic-2.0
ISC
MIT
MIT / Apache-2.0
MIT OR Apache-2.0
MIT OR Apache-2.0 OR Zlib
MIT OR Zlib OR Apache-2.0
MIT/Apache-2.0
Unlicense/MIT
Zlib OR Apache-2.0 OR MIT
"
.lines()
.filter(|it| !it.is_empty())
.collect::<Vec<_>>();
let meta = cmd!(sh, "cargo metadata --format-version 1").read().unwrap();
let mut licenses = meta
.split(|c| c == ',' || c == '{' || c == '}')
.filter(|it| it.contains(r#""license""#))
.map(|it| it.trim())
.map(|it| it[r#""license":"#.len()..].trim_matches('"'))
.collect::<Vec<_>>();
licenses.sort_unstable();
licenses.dedup();
if licenses != expected {
let mut diff = String::new();
diff.push_str("New Licenses:\n");
for &l in licenses.iter() {
if !expected.contains(&l) {
diff += &format!(" {}\n", l)
}
}
diff.push_str("\nMissing Licenses:\n");
for &l in expected.iter() {
if !licenses.contains(&l) {
diff += &format!(" {}\n", l)
}
}
panic!("different set of licenses!\n{}", diff);
}
assert_eq!(licenses, expected);
}
fn check_todo(path: &Path, text: &str) {
let need_todo = &[
// This file itself obviously needs to use todo (<- like this!).
"tests/tidy.rs",
// Some of our assists generate `todo!()`.
"handlers/add_turbo_fish.rs",
"handlers/generate_function.rs",
"handlers/add_missing_match_arms.rs",
"handlers/replace_derive_with_manual_impl.rs",
// To support generating `todo!()` in assists, we have `expr_todo()` in
// `ast::make`.
"ast/make.rs",
// The documentation in string literals may contain anything for its own purposes
"ide-db/src/generated/lints.rs",
"ide-assists/src/utils/gen_trait_fn_body.rs",
"ide-assists/src/tests/generated.rs",
// The tests for missing fields
"ide-diagnostics/src/handlers/missing_fields.rs",
];
if need_todo.iter().any(|p| path.ends_with(p)) {
return;
}
if text.contains("TODO") || text.contains("TOOD") || text.contains("todo!") {
// Generated by an assist
if text.contains("${0:todo!()}") {
return;
}
panic!(
"\nTODO markers or todo! macros should not be committed to the master branch,\n\
use FIXME instead\n\
{}\n",
path.display(),
)
}
}
fn check_dbg(path: &Path, text: &str) {
let need_dbg = &[
// This file itself obviously needs to use dbg.
"slow-tests/tidy.rs",
// Assists to remove `dbg!()`
"handlers/remove_dbg.rs",
// We have .dbg postfix
"ide-completion/src/completions/postfix.rs",
"ide-completion/src/completions/keyword.rs",
"ide-completion/src/tests/proc_macros.rs",
// The documentation in string literals may contain anything for its own purposes
"ide-completion/src/lib.rs",
"ide-db/src/generated/lints.rs",
// test for doc test for remove_dbg
"src/tests/generated.rs",
];
if need_dbg.iter().any(|p| path.ends_with(p)) {
return;
}
if text.contains("dbg!") {
panic!(
"\ndbg! macros should not be committed to the master branch,\n\
{}\n",
path.display(),
)
}
}
fn check_test_attrs(path: &Path, text: &str) {
let ignore_rule =
"https://github.com/rust-lang/rust-analyzer/blob/master/docs/dev/style.md#ignore";
let need_ignore: &[&str] = &[
// This file.
"slow-tests/tidy.rs",
// Special case to run `#[ignore]` tests.
"ide/src/runnables.rs",
// A legit test which needs to be ignored, as it takes too long to run
// :(
"hir-def/src/nameres/collector.rs",
// Long sourcegen test to generate lint completions.
"ide-db/src/tests/sourcegen_lints.rs",
// Obviously needs ignore.
"ide-assists/src/handlers/toggle_ignore.rs",
// See above.
"ide-assists/src/tests/generated.rs",
];
if text.contains("#[ignore") && !need_ignore.iter().any(|p| path.ends_with(p)) {
panic!("\ndon't `#[ignore]` tests, see:\n\n {}\n\n {}\n", ignore_rule, path.display(),)
}
let panic_rule =
"https://github.com/rust-lang/rust-analyzer/blob/master/docs/dev/style.md#should_panic";
let need_panic: &[&str] = &[
// This file.
"slow-tests/tidy.rs",
"test-utils/src/fixture.rs",
];
if text.contains("#[should_panic") && !need_panic.iter().any(|p| path.ends_with(p)) {
panic!(
"\ndon't add `#[should_panic]` tests, see:\n\n {}\n\n {}\n",
panic_rule,
path.display(),
)
}
}
fn check_trailing_ws(path: &Path, text: &str) {
if is_exclude_dir(path, &["test_data"]) {
return;
}
for (line_number, line) in text.lines().enumerate() {
if line.chars().last().map(char::is_whitespace) == Some(true) {
panic!("Trailing whitespace in {} at line {}", path.display(), line_number + 1)
}
}
}
#[derive(Default)]
struct TidyDocs {
missing_docs: Vec<String>,
contains_fixme: Vec<PathBuf>,
}
impl TidyDocs {
fn visit(&mut self, path: &Path, text: &str) {
// Tests and diagnostic fixes don't need module level comments.
if is_exclude_dir(path, &["tests", "test_data", "fixes", "grammar"]) {
return;
}
if is_exclude_file(path) {
return;
}
let first_line = match text.lines().next() {
Some(it) => it,
None => return,
};
if first_line.starts_with("//!") {
if first_line.contains("FIXME") {
self.contains_fixme.push(path.to_path_buf());
}
} else {
if text.contains("// Feature:")
|| text.contains("// Assist:")
|| text.contains("// Diagnostic:")
{
return;
}
self.missing_docs.push(path.display().to_string());
}
fn is_exclude_file(d: &Path) -> bool {
let file_names = ["tests.rs", "famous_defs_fixture.rs"];
d.file_name()
.unwrap_or_default()
.to_str()
.map(|f_n| file_names.iter().any(|name| *name == f_n))
.unwrap_or(false)
}
}
fn finish(self) {
if !self.missing_docs.is_empty() {
panic!(
"\nMissing docs strings\n\n\
modules:\n{}\n\n",
self.missing_docs.join("\n")
)
}
for path in self.contains_fixme {
panic!("FIXME doc in a fully-documented crate: {}", path.display())
}
}
}
fn is_exclude_dir(p: &Path, dirs_to_exclude: &[&str]) -> bool {
p.strip_prefix(sourcegen::project_root())
.unwrap()
.components()
.rev()
.skip(1)
.filter_map(|it| it.as_os_str().to_str())
.any(|it| dirs_to_exclude.contains(&it))
}
#[derive(Default)]
struct TidyMarks {
hits: HashSet<String>,
checks: HashSet<String>,
}
impl TidyMarks {
fn visit(&mut self, _path: &Path, text: &str) {
find_marks(&mut self.hits, text, "hit");
find_marks(&mut self.checks, text, "check");
find_marks(&mut self.checks, text, "check_count");
}
fn finish(self) {
assert!(!self.hits.is_empty());
let diff: Vec<_> =
self.hits.symmetric_difference(&self.checks).map(|it| it.as_str()).collect();
if !diff.is_empty() {
panic!("unpaired marks: {:?}", diff)
}
}
}
#[allow(deprecated)]
fn stable_hash(text: &str) -> u64 {
use std::hash::{Hash, Hasher, SipHasher};
let text = text.replace('\r', "");
let mut hasher = SipHasher::default();
text.hash(&mut hasher);
hasher.finish()
}
fn find_marks(set: &mut HashSet<String>, text: &str, mark: &str) {
let mut text = text;
let mut prev_text = "";
while text != prev_text {
prev_text = text;
if let Some(idx) = text.find(mark) {
text = &text[idx + mark.len()..];
if let Some(stripped_text) = text.strip_prefix("!(") {
text = stripped_text.trim_start();
if let Some(idx2) = text.find(|c: char| !(c.is_alphanumeric() || c == '_')) {
let mark_text = &text[..idx2];
set.insert(mark_text.to_string());
text = &text[idx2..];
}
}
}
}
}