#![feature(test)]
pub use self::output::{NormalizedOutput, StdErr, StdOut, TestOutput};
use difference::Changeset;
use once_cell::sync::Lazy;
pub use pretty_assertions::{assert_eq, assert_ne};
use regex::Regex;
use std::{
fmt,
fmt::Debug,
fs::{create_dir_all, File},
io::Write,
path::Path,
thread,
};
use swc_common::{
errors::{Diagnostic, Handler},
sync::Lrc,
FilePathMapping, SourceMap,
};
#[macro_use]
mod macros;
mod diag_errors;
mod output;
mod paths;
mod string_errors;
pub fn init() {
use ansi_term::Color;
struct Padded<T> {
value: T,
width: usize,
}
impl<T: fmt::Display> fmt::Display for Padded<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{: <width$}", self.value, width = self.width)
}
}
fn colored_level<'a>(level: log::Level) -> String {
match level {
log::Level::Trace => Color::Cyan.paint("TRACE").to_string(),
log::Level::Debug => Color::Blue.paint("DEBUG").to_string(),
log::Level::Info => Color::Green.paint("INFO ").to_string(),
log::Level::Warn => Color::Yellow.paint("WARN ").to_string(),
log::Level::Error => Color::Red.paint("ERROR").to_string(),
}
}
let _ = env_logger::Builder::from_default_env()
.is_test(true)
.format(|f, record| {
let level = colored_level(record.level());
writeln!(f, " {} > {}", level, record.args(),)
})
.try_init();
}
pub fn run_test<F, Ret>(treat_err_as_bug: bool, op: F) -> Result<Ret, StdErr>
where
F: FnOnce(Lrc<SourceMap>, &Handler) -> Result<Ret, ()>,
{
init();
let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
let (handler, errors) = self::string_errors::new_handler(cm.clone(), treat_err_as_bug);
let result = swc_common::GLOBALS.set(&swc_common::Globals::new(), || op(cm, &handler));
match result {
Ok(res) => Ok(res),
Err(()) => Err(errors.into()),
}
}
pub fn run_test2<F, Ret>(treat_err_as_bug: bool, op: F) -> Result<Ret, StdErr>
where
F: FnOnce(Lrc<SourceMap>, Handler) -> Result<Ret, ()>,
{
init();
let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
let (handler, errors) = self::string_errors::new_handler(cm.clone(), treat_err_as_bug);
let result = swc_common::GLOBALS.set(&swc_common::Globals::new(), || op(cm, handler));
match result {
Ok(res) => Ok(res),
Err(()) => Err(errors.into()),
}
}
pub struct Tester {
pub cm: Lrc<SourceMap>,
pub globals: swc_common::Globals,
treat_err_as_bug: bool,
}
impl Tester {
pub fn new() -> Self {
init();
Tester {
cm: Lrc::new(SourceMap::new(FilePathMapping::empty())),
globals: swc_common::Globals::new(),
treat_err_as_bug: false,
}
}
pub fn no_error(mut self) -> Self {
self.treat_err_as_bug = true;
self
}
pub fn print_errors<F, Ret>(&self, op: F) -> Result<Ret, StdErr>
where
F: FnOnce(Lrc<SourceMap>, Handler) -> Result<Ret, ()>,
{
let (handler, errors) =
self::string_errors::new_handler(self.cm.clone(), self.treat_err_as_bug);
let result = swc_common::GLOBALS.set(&self.globals, || op(self.cm.clone(), handler));
match result {
Ok(res) => Ok(res),
Err(()) => Err(errors.into()),
}
}
pub fn errors<F, Ret>(&self, op: F) -> Result<Ret, Vec<Diagnostic>>
where
F: FnOnce(Lrc<SourceMap>, Handler) -> Result<Ret, ()>,
{
let (handler, errors) =
self::diag_errors::new_handler(self.cm.clone(), self.treat_err_as_bug);
let result = swc_common::GLOBALS.set(&self.globals, || op(self.cm.clone(), handler));
let mut errs: Vec<_> = errors.into();
errs.sort_by_key(|d| {
let span = d.span.primary_span().unwrap();
let cp = self.cm.lookup_char_pos(span.lo());
let line = cp.line;
let column = cp.col.0 + 1;
line * 10000 + column
});
match result {
Ok(res) => Ok(res),
Err(()) => Err(errs),
}
}
}
fn write_to_file(path: &Path, content: &str) {
File::create(path)
.unwrap_or_else(|err| {
panic!(
"failed to create file ({}) for writing data of the failed assertion: {}",
path.display(),
err
)
})
.write_all(content.as_bytes())
.expect("failed to write data of the failed assertion")
}
pub fn print_left_right(left: &dyn Debug, right: &dyn Debug) -> String {
fn print(t: &dyn Debug) -> String {
let s = format!("{:#?}", t);
let s = {
static RE: Lazy<Regex> =
Lazy::new(|| Regex::new("Span \\{[\\a-zA-Z0#:\\(\\)]*\\}").unwrap());
&RE
}
.replace_all(&s, "_");
let s = {
static RE: Lazy<Regex> = Lazy::new(|| Regex::new("span: _[,]?\\s*").unwrap());
&RE
}
.replace_all(&s, "");
s.into()
}
let (left, right) = (print(left), print(right));
let cur = thread::current();
let test_name = cur
.name()
.expect("rustc sets test name as the name of thread");
let target_dir = {
let mut buf = paths::test_results_dir().to_path_buf();
for m in test_name.split("::") {
buf.push(m)
}
create_dir_all(&buf).unwrap_or_else(|err| {
panic!(
"failed to create directory ({}) for writing data of the failed assertion: {}",
buf.display(),
err
)
});
buf
};
write_to_file(&target_dir.join("left"), &left);
write_to_file(&target_dir.join("right"), &right);
format!(
"----- {}\n left:\n{}\n right:\n{}",
test_name, left, right
)
}
#[macro_export]
macro_rules! assert_eq_ignore_span {
($l:expr, $r:expr) => {{
println!("{}", module_path!());
let (l, r) = ($crate::drop_span($l), $crate::drop_span($r));
if l != r {
panic!("assertion failed\n{}", $crate::print_left_right(&l, &r));
}
}};
}
pub fn diff(l: &str, r: &str) -> String {
let cs = Changeset::new(l, r, "\n");
format!("{}", cs)
}