Deleted vendor folder

1 files changed, 0 insertions, 1445 deletions

diff --git a/vendor/flume/tests/golang.rs b/vendor/flume/tests/golang.rs
deleted file mode 100644
index ca00840..0000000
--- a/vendor/flume/tests/golang.rs
+++ /dev/null
@@ -1,1445 +0,0 @@
-// //! Tests copied from Go and manually rewritten in Rust.
-// //!
-// //! Source:
-// //!   - https://github.com/golang/go
-// //!
-// //! Copyright & License:
-// //!   - Copyright (c) 2009 The Go Authors
-// //!   - https://golang.org/AUTHORS
-// //!   - https://golang.org/LICENSE
-// //!   - https://golang.org/PATENTS
-
-// use std::any::Any;
-// use std::cell::Cell;
-// use std::collections::HashMap;
-// use std::sync::{Arc, Condvar, Mutex};
-// use std::thread;
-// use std::time::Duration;
-
-// use flume::{bounded, tick, Receiver, Select, Sender};
-
-// fn ms(ms: u64) -> Duration {
-//     Duration::from_millis(ms)
-// }
-
-// struct Chan<T> {
-//     inner: Arc<Mutex<ChanInner<T>>>,
-// }
-
-// struct ChanInner<T> {
-//     s: Option<Sender<T>>,
-//     r: Receiver<T>,
-// }
-
-// impl<T> Clone for Chan<T> {
-//     fn clone(&self) -> Chan<T> {
-//         Chan {
-//             inner: self.inner.clone(),
-//         }
-//     }
-// }
-
-// impl<T> Chan<T> {
-//     fn send(&self, msg: T) {
-//         let s = self
-//             .inner
-//             .lock()
-//             .unwrap()
-//             .s
-//             .as_ref()
-//             .expect("sending into closed channel")
-//             .clone();
-//         let _ = s.send(msg);
-//     }
-
-//     fn try_recv(&self) -> Option<T> {
-//         let r = self.inner.lock().unwrap().r.clone();
-//         r.try_recv().ok()
-//     }
-
-//     fn recv(&self) -> Option<T> {
-//         let r = self.inner.lock().unwrap().r.clone();
-//         r.recv().ok()
-//     }
-
-//     fn close(&self) {
-//         self.inner
-//             .lock()
-//             .unwrap()
-//             .s
-//             .take()
-//             .expect("channel already closed");
-//     }
-
-//     fn rx(&self) -> Receiver<T> {
-//         self.inner.lock().unwrap().r.clone()
-//     }
-
-//     fn tx(&self) -> Sender<T> {
-//         match self.inner.lock().unwrap().s.as_ref() {
-//             None => {
-//                 let (s, r) = bounded(0);
-//                 std::mem::forget(r);
-//                 s
-//             }
-//             Some(s) => s.clone(),
-//         }
-//     }
-// }
-
-// impl<T> Iterator for Chan<T> {
-//     type Item = T;
-
-//     fn next(&mut self) -> Option<Self::Item> {
-//         self.recv()
-//     }
-// }
-
-// impl<'a, T> IntoIterator for &'a Chan<T> {
-//     type Item = T;
-//     type IntoIter = Chan<T>;
-
-//     fn into_iter(self) -> Self::IntoIter {
-//         self.clone()
-//     }
-// }
-
-// fn make<T>(cap: usize) -> Chan<T> {
-//     let (s, r) = bounded(cap);
-//     Chan {
-//         inner: Arc::new(Mutex::new(ChanInner { s: Some(s), r })),
-//     }
-// }
-
-// #[derive(Clone)]
-// struct WaitGroup(Arc<WaitGroupInner>);
-
-// struct WaitGroupInner {
-//     cond: Condvar,
-//     count: Mutex<i32>,
-// }
-
-// impl WaitGroup {
-//     fn new() -> WaitGroup {
-//         WaitGroup(Arc::new(WaitGroupInner {
-//             cond: Condvar::new(),
-//             count: Mutex::new(0),
-//         }))
-//     }
-
-//     fn add(&self, delta: i32) {
-//         let mut count = self.0.count.lock().unwrap();
-//         *count += delta;
-//         assert!(*count >= 0);
-//         self.0.cond.notify_all();
-//     }
-
-//     fn done(&self) {
-//         self.add(-1);
-//     }
-
-//     fn wait(&self) {
-//         let mut count = self.0.count.lock().unwrap();
-//         while *count > 0 {
-//             count = self.0.cond.wait(count).unwrap();
-//         }
-//     }
-// }
-
-// struct Defer<F: FnOnce()> {
-//     f: Option<Box<F>>,
-// }
-
-// impl<F: FnOnce()> Drop for Defer<F> {
-//     fn drop(&mut self) {
-//         let f = self.f.take().unwrap();
-//         let mut f = Some(f);
-//         let mut f = move || f.take().unwrap()();
-//         f();
-//     }
-// }
-
-// macro_rules! defer {
-//     ($body:expr) => {
-//         let _defer = Defer {
-//             f: Some(Box::new(|| $body)),
-//         };
-//     };
-// }
-
-// macro_rules! go {
-//     (@parse ref $v:ident, $($tail:tt)*) => {{
-//         let ref $v = $v;
-//         go!(@parse $($tail)*)
-//     }};
-//     (@parse move $v:ident, $($tail:tt)*) => {{
-//         let $v = $v;
-//         go!(@parse $($tail)*)
-//     }};
-//     (@parse $v:ident, $($tail:tt)*) => {{
-//         let $v = $v.clone();
-//         go!(@parse $($tail)*)
-//     }};
-//     (@parse $body:expr) => {
-//         ::std::thread::spawn(move || {
-//             let res = ::std::panic::catch_unwind(::std::panic::AssertUnwindSafe(|| {
-//                 $body
-//             }));
-//             if res.is_err() {
-//                 eprintln!("goroutine panicked: {:?}", res);
-//                 ::std::process::abort();
-//             }
-//         })
-//     };
-//     (@parse $($tail:tt)*) => {
-//         compile_error!("invalid `go!` syntax")
-//     };
-//     ($($tail:tt)*) => {{
-//         go!(@parse $($tail)*)
-//     }};
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/doubleselect.go
-// mod doubleselect {
-//     use super::*;
-
-//     const ITERATIONS: i32 = 10_000;
-
-//     fn sender(n: i32, c1: Chan<i32>, c2: Chan<i32>, c3: Chan<i32>, c4: Chan<i32>) {
-//         defer! { c1.close() }
-//         defer! { c2.close() }
-//         defer! { c3.close() }
-//         defer! { c4.close() }
-
-//         for i in 0..n {
-//             select! {
-//                 send(c1.tx(), i) -> _ => {}
-//                 send(c2.tx(), i) -> _ => {}
-//                 send(c3.tx(), i) -> _ => {}
-//                 send(c4.tx(), i) -> _ => {}
-//             }
-//         }
-//     }
-
-//     fn mux(out: Chan<i32>, inp: Chan<i32>, done: Chan<bool>) {
-//         for v in inp {
-//             out.send(v);
-//         }
-//         done.send(true);
-//     }
-
-//     fn recver(inp: Chan<i32>) {
-//         let mut seen = HashMap::new();
-
-//         for v in &inp {
-//             if seen.contains_key(&v) {
-//                 panic!("got duplicate value for {}", v);
-//             }
-//             seen.insert(v, true);
-//         }
-//     }
-
-//     #[test]
-//     fn main() {
-//         let c1 = make::<i32>(0);
-//         let c2 = make::<i32>(0);
-//         let c3 = make::<i32>(0);
-//         let c4 = make::<i32>(0);
-//         let done = make::<bool>(0);
-//         let cmux = make::<i32>(0);
-
-//         go!(c1, c2, c3, c4, sender(ITERATIONS, c1, c2, c3, c4));
-//         go!(cmux, c1, done, mux(cmux, c1, done));
-//         go!(cmux, c2, done, mux(cmux, c2, done));
-//         go!(cmux, c3, done, mux(cmux, c3, done));
-//         go!(cmux, c4, done, mux(cmux, c4, done));
-//         go!(done, cmux, {
-//             done.recv();
-//             done.recv();
-//             done.recv();
-//             done.recv();
-//             cmux.close();
-//         });
-//         recver(cmux);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/fifo.go
-// mod fifo {
-//     use super::*;
-
-//     const N: i32 = 10;
-
-//     #[test]
-//     fn asynch_fifo() {
-//         let ch = make::<i32>(N as usize);
-//         for i in 0..N {
-//             ch.send(i);
-//         }
-//         for i in 0..N {
-//             if ch.recv() != Some(i) {
-//                 panic!("bad receive");
-//             }
-//         }
-//     }
-
-//     fn chain(ch: Chan<i32>, val: i32, inp: Chan<i32>, out: Chan<i32>) {
-//         inp.recv();
-//         if ch.recv() != Some(val) {
-//             panic!(val);
-//         }
-//         out.send(1);
-//     }
-
-//     #[test]
-//     fn synch_fifo() {
-//         let ch = make::<i32>(0);
-//         let mut inp = make::<i32>(0);
-//         let start = inp.clone();
-
-//         for i in 0..N {
-//             let out = make::<i32>(0);
-//             go!(ch, i, inp, out, chain(ch, i, inp, out));
-//             inp = out;
-//         }
-
-//         start.send(0);
-//         for i in 0..N {
-//             ch.send(i);
-//         }
-//         inp.recv();
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/goroutines.go
-// mod goroutines {
-//     use super::*;
-
-//     fn f(left: Chan<i32>, right: Chan<i32>) {
-//         left.send(right.recv().unwrap());
-//     }
-
-//     #[test]
-//     fn main() {
-//         let n = 100i32;
-
-//         let leftmost = make::<i32>(0);
-//         let mut right = leftmost.clone();
-//         let mut left = leftmost.clone();
-
-//         for _ in 0..n {
-//             right = make::<i32>(0);
-//             go!(left, right, f(left, right));
-//             left = right.clone();
-//         }
-
-//         go!(right, right.send(1));
-//         leftmost.recv().unwrap();
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/nonblock.go
-// mod nonblock {
-//     use super::*;
-
-//     fn i32receiver(c: Chan<i32>, strobe: Chan<bool>) {
-//         if c.recv().unwrap() != 123 {
-//             panic!("i32 value");
-//         }
-//         strobe.send(true);
-//     }
-
-//     fn i32sender(c: Chan<i32>, strobe: Chan<bool>) {
-//         c.send(234);
-//         strobe.send(true);
-//     }
-
-//     fn i64receiver(c: Chan<i64>, strobe: Chan<bool>) {
-//         if c.recv().unwrap() != 123456 {
-//             panic!("i64 value");
-//         }
-//         strobe.send(true);
-//     }
-
-//     fn i64sender(c: Chan<i64>, strobe: Chan<bool>) {
-//         c.send(234567);
-//         strobe.send(true);
-//     }
-
-//     fn breceiver(c: Chan<bool>, strobe: Chan<bool>) {
-//         if !c.recv().unwrap() {
-//             panic!("b value");
-//         }
-//         strobe.send(true);
-//     }
-
-//     fn bsender(c: Chan<bool>, strobe: Chan<bool>) {
-//         c.send(true);
-//         strobe.send(true);
-//     }
-
-//     fn sreceiver(c: Chan<String>, strobe: Chan<bool>) {
-//         if c.recv().unwrap() != "hello" {
-//             panic!("x value");
-//         }
-//         strobe.send(true);
-//     }
-
-//     fn ssender(c: Chan<String>, strobe: Chan<bool>) {
-//         c.send("hello again".to_string());
-//         strobe.send(true);
-//     }
-
-//     const MAX_TRIES: usize = 10000; // Up to 100ms per test.
-
-//     #[test]
-//     fn main() {
-//         let ticker = tick(Duration::new(0, 10_000)); // 10 us
-//         let sleep = || {
-//             ticker.recv().unwrap();
-//             ticker.recv().unwrap();
-//             thread::yield_now();
-//             thread::yield_now();
-//             thread::yield_now();
-//         };
-
-//         let sync = make::<bool>(0);
-
-//         for buffer in 0..2 {
-//             let c32 = make::<i32>(buffer);
-//             let c64 = make::<i64>(buffer);
-//             let cb = make::<bool>(buffer);
-//             let cs = make::<String>(buffer);
-
-//             select! {
-//                 recv(c32.rx()) -> _ => panic!("blocked i32sender"),
-//                 default => {}
-//             }
-
-//             select! {
-//                 recv(c64.rx()) -> _ => panic!("blocked i64sender"),
-//                 default => {}
-//             }
-
-//             select! {
-//                 recv(cb.rx()) -> _ => panic!("blocked bsender"),
-//                 default => {}
-//             }
-
-//             select! {
-//                 recv(cs.rx()) -> _ => panic!("blocked ssender"),
-//                 default => {}
-//             }
-
-//             go!(c32, sync, i32receiver(c32, sync));
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     send(c32.tx(), 123) -> _ => break,
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("i32receiver buffer={}", buffer);
-//                             panic!("fail")
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             sync.recv();
-//             go!(c32, sync, i32sender(c32, sync));
-//             if buffer > 0 {
-//                 sync.recv();
-//             }
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     recv(c32.rx()) -> v => {
-//                         if v != Ok(234) {
-//                             panic!("i32sender value");
-//                         }
-//                         break;
-//                     }
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("i32sender buffer={}", buffer);
-//                             panic!("fail");
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             if buffer == 0 {
-//                 sync.recv();
-//             }
-
-//             go!(c64, sync, i64receiver(c64, sync));
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     send(c64.tx(), 123456) -> _ => break,
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("i64receiver buffer={}", buffer);
-//                             panic!("fail")
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             sync.recv();
-//             go!(c64, sync, i64sender(c64, sync));
-//             if buffer > 0 {
-//                 sync.recv();
-//             }
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     recv(c64.rx()) -> v => {
-//                         if v != Ok(234567) {
-//                             panic!("i64sender value");
-//                         }
-//                         break;
-//                     }
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("i64sender buffer={}", buffer);
-//                             panic!("fail");
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             if buffer == 0 {
-//                 sync.recv();
-//             }
-
-//             go!(cb, sync, breceiver(cb, sync));
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     send(cb.tx(), true) -> _ => break,
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("breceiver buffer={}", buffer);
-//                             panic!("fail")
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             sync.recv();
-//             go!(cb, sync, bsender(cb, sync));
-//             if buffer > 0 {
-//                 sync.recv();
-//             }
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     recv(cb.rx()) -> v => {
-//                         if v != Ok(true) {
-//                             panic!("bsender value");
-//                         }
-//                         break;
-//                     }
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("bsender buffer={}", buffer);
-//                             panic!("fail");
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             if buffer == 0 {
-//                 sync.recv();
-//             }
-
-//             go!(cs, sync, sreceiver(cs, sync));
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     send(cs.tx(), "hello".to_string()) -> _ => break,
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("sreceiver buffer={}", buffer);
-//                             panic!("fail")
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             sync.recv();
-//             go!(cs, sync, ssender(cs, sync));
-//             if buffer > 0 {
-//                 sync.recv();
-//             }
-//             let mut try = 0;
-//             loop {
-//                 select! {
-//                     recv(cs.rx()) -> v => {
-//                         if v != Ok("hello again".to_string()) {
-//                             panic!("ssender value");
-//                         }
-//                         break;
-//                     }
-//                     default => {
-//                         try += 1;
-//                         if try > MAX_TRIES {
-//                             println!("ssender buffer={}", buffer);
-//                             panic!("fail");
-//                         }
-//                         sleep();
-//                     }
-//                 }
-//             }
-//             if buffer == 0 {
-//                 sync.recv();
-//             }
-//         }
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select.go
-// mod select {
-//     use super::*;
-
-//     #[test]
-//     fn main() {
-//         let shift = Cell::new(0);
-//         let counter = Cell::new(0);
-
-//         let get_value = || {
-//             counter.set(counter.get() + 1);
-//             1 << shift.get()
-//         };
-
-//         let send = |mut a: Option<&Chan<u32>>, mut b: Option<&Chan<u32>>| {
-//             let mut i = 0;
-//             let never = make::<u32>(0);
-//             loop {
-//                 let nil1 = never.tx();
-//                 let nil2 = never.tx();
-//                 let v1 = get_value();
-//                 let v2 = get_value();
-//                 select! {
-//                     send(a.map(|c| c.tx()).unwrap_or(nil1), v1) -> _ => {
-//                         i += 1;
-//                         a = None;
-//                     }
-//                     send(b.map(|c| c.tx()).unwrap_or(nil2), v2) -> _ => {
-//                         i += 1;
-//                         b = None;
-//                     }
-//                     default => break,
-//                 }
-//                 shift.set(shift.get() + 1);
-//             }
-//             i
-//         };
-
-//         let a = make::<u32>(1);
-//         let b = make::<u32>(1);
-
-//         assert_eq!(send(Some(&a), Some(&b)), 2);
-
-//         let av = a.recv().unwrap();
-//         let bv = b.recv().unwrap();
-//         assert_eq!(av | bv, 3);
-
-//         assert_eq!(send(Some(&a), None), 1);
-//         assert_eq!(counter.get(), 10);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select2.go
-// mod select2 {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select3.go
-// mod select3 {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select4.go
-// mod select4 {
-//     use super::*;
-
-//     #[test]
-//     fn main() {
-//         let c = make::<i32>(1);
-//         let c1 = make::<i32>(0);
-//         c.send(42);
-//         select! {
-//             recv(c1.rx()) -> _ => panic!("BUG"),
-//             recv(c.rx()) -> v => assert_eq!(v, Ok(42)),
-//         }
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select6.go
-// mod select6 {
-//     use super::*;
-
-//     #[test]
-//     fn main() {
-//         let c1 = make::<bool>(0);
-//         let c2 = make::<bool>(0);
-//         let c3 = make::<bool>(0);
-
-//         go!(c1, c1.recv());
-//         go!(c1, c2, c3, {
-//             select! {
-//                 recv(c1.rx()) -> _ => panic!("dummy"),
-//                 recv(c2.rx()) -> _ => c3.send(true),
-//             }
-//             c1.recv();
-//         });
-//         go!(c2, c2.send(true));
-
-//         c3.recv();
-//         c1.send(true);
-//         c1.send(true);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/select7.go
-// mod select7 {
-//     use super::*;
-
-//     fn recv1(c: Chan<i32>) {
-//         c.recv().unwrap();
-//     }
-
-//     fn recv2(c: Chan<i32>) {
-//         select! {
-//             recv(c.rx()) -> _ => ()
-//         }
-//     }
-
-//     fn recv3(c: Chan<i32>) {
-//         let c2 = make::<i32>(1);
-//         select! {
-//             recv(c.rx()) -> _ => (),
-//             recv(c2.rx()) -> _ => ()
-//         }
-//     }
-
-//     fn send1(recv: fn(Chan<i32>)) {
-//         let c = make::<i32>(1);
-//         go!(c, recv(c));
-//         thread::yield_now();
-//         c.send(1);
-//     }
-
-//     fn send2(recv: fn(Chan<i32>)) {
-//         let c = make::<i32>(1);
-//         go!(c, recv(c));
-//         thread::yield_now();
-//         select! {
-//             send(c.tx(), 1) -> _ => ()
-//         }
-//     }
-
-//     fn send3(recv: fn(Chan<i32>)) {
-//         let c = make::<i32>(1);
-//         go!(c, recv(c));
-//         thread::yield_now();
-//         let c2 = make::<i32>(1);
-//         select! {
-//             send(c.tx(), 1) -> _ => (),
-//             send(c2.tx(), 1) -> _ => ()
-//         }
-//     }
-
-//     #[test]
-//     fn main() {
-//         send1(recv1);
-//         send2(recv1);
-//         send3(recv1);
-//         send1(recv2);
-//         send2(recv2);
-//         send3(recv2);
-//         send1(recv3);
-//         send2(recv3);
-//         send3(recv3);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/sieve1.go
-// mod sieve1 {
-//     use super::*;
-
-//     fn generate(ch: Chan<i32>) {
-//         let mut i = 2;
-//         loop {
-//             ch.send(i);
-//             i += 1;
-//         }
-//     }
-
-//     fn filter(in_ch: Chan<i32>, out_ch: Chan<i32>, prime: i32) {
-//         for i in in_ch {
-//             if i % prime != 0 {
-//                 out_ch.send(i);
-//             }
-//         }
-//     }
-
-//     fn sieve(primes: Chan<i32>) {
-//         let mut ch = make::<i32>(1);
-//         go!(ch, generate(ch));
-//         loop {
-//             let prime = ch.recv().unwrap();
-//             primes.send(prime);
-
-//             let ch1 = make::<i32>(1);
-//             go!(ch, ch1, prime, filter(ch, ch1, prime));
-//             ch = ch1;
-//         }
-//     }
-
-//     #[test]
-//     fn main() {
-//         let primes = make::<i32>(1);
-//         go!(primes, sieve(primes));
-
-//         let a = [
-//             2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83,
-//             89, 97,
-//         ];
-//         for item in a.iter() {
-//             let x = primes.recv().unwrap();
-//             if x != *item {
-//                 println!("{} != {}", x, item);
-//                 panic!("fail");
-//             }
-//         }
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/chan/zerosize.go
-// mod zerosize {
-//     use super::*;
-
-//     #[test]
-//     fn zero_size_struct() {
-//         struct ZeroSize;
-//         let _ = make::<ZeroSize>(0);
-//     }
-
-//     #[test]
-//     fn zero_size_array() {
-//         let _ = make::<[u8; 0]>(0);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/src/runtime/chan_test.go
-// mod chan_test {
-//     use super::*;
-
-//     #[test]
-//     fn test_chan() {
-//         const N: i32 = 200;
-
-//         for cap in 0..N {
-//             {
-//                 // Ensure that receive from empty chan blocks.
-//                 let c = make::<i32>(cap as usize);
-
-//                 let recv1 = Arc::new(Mutex::new(false));
-//                 go!(c, recv1, {
-//                     c.recv();
-//                     *recv1.lock().unwrap() = true;
-//                 });
-
-//                 let recv2 = Arc::new(Mutex::new(false));
-//                 go!(c, recv2, {
-//                     c.recv();
-//                     *recv2.lock().unwrap() = true;
-//                 });
-
-//                 thread::sleep(ms(1));
-
-//                 if *recv1.lock().unwrap() || *recv2.lock().unwrap() {
-//                     panic!();
-//                 }
-
-//                 // Ensure that non-blocking receive does not block.
-//                 select! {
-//                     recv(c.rx()) -> _ => panic!(),
-//                     default => {}
-//                 }
-//                 select! {
-//                     recv(c.rx()) -> _ => panic!(),
-//                     default => {}
-//                 }
-
-//                 c.send(0);
-//                 c.send(0);
-//             }
-
-//             {
-//                 // Ensure that send to full chan blocks.
-//                 let c = make::<i32>(cap as usize);
-//                 for i in 0..cap {
-//                     c.send(i);
-//                 }
-
-//                 let sent = Arc::new(Mutex::new(0));
-//                 go!(sent, c, {
-//                     c.send(0);
-//                     *sent.lock().unwrap() = 1;
-//                 });
-
-//                 thread::sleep(ms(1));
-
-//                 if *sent.lock().unwrap() != 0 {
-//                     panic!();
-//                 }
-
-//                 // Ensure that non-blocking send does not block.
-//                 select! {
-//                     send(c.tx(), 0) -> _ => panic!(),
-//                     default => {}
-//                 }
-//                 c.recv();
-//             }
-
-//             {
-//                 // Ensure that we receive 0 from closed chan.
-//                 let c = make::<i32>(cap as usize);
-//                 for i in 0..cap {
-//                     c.send(i);
-//                 }
-//                 c.close();
-
-//                 for i in 0..cap {
-//                     let v = c.recv();
-//                     if v != Some(i) {
-//                         panic!();
-//                     }
-//                 }
-
-//                 if c.recv() != None {
-//                     panic!();
-//                 }
-//                 if c.try_recv() != None {
-//                     panic!();
-//                 }
-//             }
-
-//             {
-//                 // Ensure that close unblocks receive.
-//                 let c = make::<i32>(cap as usize);
-//                 let done = make::<bool>(0);
-
-//                 go!(c, done, {
-//                     let v = c.try_recv();
-//                     done.send(v.is_some());
-//                 });
-
-//                 thread::sleep(ms(1));
-//                 c.close();
-
-//                 if !done.recv().unwrap() {
-//                     // panic!();
-//                 }
-//             }
-
-//             {
-//                 // Send 100 integers,
-//                 // ensure that we receive them non-corrupted in FIFO order.
-//                 let c = make::<i32>(cap as usize);
-//                 go!(c, {
-//                     for i in 0..100 {
-//                         c.send(i);
-//                     }
-//                 });
-//                 for i in 0..100 {
-//                     if c.recv() != Some(i) {
-//                         panic!();
-//                     }
-//                 }
-
-//                 // Same, but using recv2.
-//                 go!(c, {
-//                     for i in 0..100 {
-//                         c.send(i);
-//                     }
-//                 });
-//                 for i in 0..100 {
-//                     if c.recv() != Some(i) {
-//                         panic!();
-//                     }
-//                 }
-//             }
-//         }
-//     }
-
-//     #[test]
-//     fn test_nonblock_recv_race() {
-//         const N: usize = 1000;
-
-//         for _ in 0..N {
-//             let c = make::<i32>(1);
-//             c.send(1);
-
-//             let t = go!(c, {
-//                 select! {
-//                     recv(c.rx()) -> _ => {}
-//                     default => panic!("chan is not ready"),
-//                 }
-//             });
-
-//             c.close();
-//             c.recv();
-//             t.join().unwrap();
-//         }
-//     }
-
-//     #[test]
-//     fn test_nonblock_select_race() {
-//         const N: usize = 1000;
-
-//         let done = make::<bool>(1);
-//         for _ in 0..N {
-//             let c1 = make::<i32>(1);
-//             let c2 = make::<i32>(1);
-//             c1.send(1);
-
-//             go!(c1, c2, done, {
-//                 select! {
-//                     recv(c1.rx()) -> _ => {}
-//                     recv(c2.rx()) -> _ => {}
-//                     default => {
-//                         done.send(false);
-//                         return;
-//                     }
-//                 }
-//                 done.send(true);
-//             });
-
-//             c2.send(1);
-//             select! {
-//                 recv(c1.rx()) -> _ => {}
-//                 default => {}
-//             }
-//             if !done.recv().unwrap() {
-//                 panic!("no chan is ready");
-//             }
-//         }
-//     }
-
-//     #[test]
-//     fn test_nonblock_select_race2() {
-//         const N: usize = 1000;
-
-//         let done = make::<bool>(1);
-//         for _ in 0..N {
-//             let c1 = make::<i32>(1);
-//             let c2 = make::<i32>(0);
-//             c1.send(1);
-
-//             go!(c1, c2, done, {
-//                 select! {
-//                     recv(c1.rx()) -> _ => {}
-//                     recv(c2.rx()) -> _ => {}
-//                     default => {
-//                         done.send(false);
-//                         return;
-//                     }
-//                 }
-//                 done.send(true);
-//             });
-
-//             c2.close();
-//             select! {
-//                 recv(c1.rx()) -> _ => {}
-//                 default => {}
-//             }
-//             if !done.recv().unwrap() {
-//                 panic!("no chan is ready");
-//             }
-//         }
-//     }
-
-//     #[test]
-//     fn test_self_select() {
-//         // Ensure that send/recv on the same chan in select
-//         // does not crash nor deadlock.
-
-//         for &cap in &[0, 10] {
-//             let wg = WaitGroup::new();
-//             wg.add(2);
-//             let c = make::<i32>(cap);
-
-//             for p in 0..2 {
-//                 let p = p;
-//                 go!(wg, p, c, {
-//                     defer! { wg.done() }
-//                     for i in 0..1000 {
-//                         if p == 0 || i % 2 == 0 {
-//                             select! {
-//                                 send(c.tx(), p) -> _ => {}
-//                                 recv(c.rx()) -> v => {
-//                                     if cap == 0 && v.ok() == Some(p) {
-//                                         panic!("self receive");
-//                                     }
-//                                 }
-//                             }
-//                         } else {
-//                             select! {
-//                                 recv(c.rx()) -> v => {
-//                                     if cap == 0 && v.ok() == Some(p) {
-//                                         panic!("self receive");
-//                                     }
-//                                 }
-//                                 send(c.tx(), p) -> _ => {}
-//                             }
-//                         }
-//                     }
-//                 });
-//             }
-//             wg.wait();
-//         }
-//     }
-
-//     #[test]
-//     fn test_select_stress() {
-//         let c = vec![
-//             make::<i32>(0),
-//             make::<i32>(0),
-//             make::<i32>(2),
-//             make::<i32>(3),
-//         ];
-
-//         const N: usize = 10000;
-
-//         // There are 4 goroutines that send N values on each of the chans,
-//         // + 4 goroutines that receive N values on each of the chans,
-//         // + 1 goroutine that sends N values on each of the chans in a single select,
-//         // + 1 goroutine that receives N values on each of the chans in a single select.
-//         // All these sends, receives and selects interact chaotically at runtime,
-//         // but we are careful that this whole construct does not deadlock.
-//         let wg = WaitGroup::new();
-//         wg.add(10);
-
-//         for k in 0..4 {
-//             go!(k, c, wg, {
-//                 for _ in 0..N {
-//                     c[k].send(0);
-//                 }
-//                 wg.done();
-//             });
-//             go!(k, c, wg, {
-//                 for _ in 0..N {
-//                     c[k].recv();
-//                 }
-//                 wg.done();
-//             });
-//         }
-
-//         go!(c, wg, {
-//             let mut n = [0; 4];
-//             let mut c1 = c.iter().map(|c| Some(c.rx().clone())).collect::<Vec<_>>();
-
-//             for _ in 0..4 * N {
-//                 let index = {
-//                     let mut sel = Select::new();
-//                     let mut opers = [!0; 4];
-//                     for &i in &[3, 2, 0, 1] {
-//                         if let Some(c) = &c1[i] {
-//                             opers[i] = sel.recv(c);
-//                         }
-//                     }
-
-//                     let oper = sel.select();
-//                     let mut index = !0;
-//                     for i in 0..4 {
-//                         if opers[i] == oper.index() {
-//                             index = i;
-//                             let _ = oper.recv(c1[i].as_ref().unwrap());
-//                             break;
-//                         }
-//                     }
-//                     index
-//                 };
-
-//                 n[index] += 1;
-//                 if n[index] == N {
-//                     c1[index] = None;
-//                 }
-//             }
-//             wg.done();
-//         });
-
-//         go!(c, wg, {
-//             let mut n = [0; 4];
-//             let mut c1 = c.iter().map(|c| Some(c.tx().clone())).collect::<Vec<_>>();
-
-//             for _ in 0..4 * N {
-//                 let index = {
-//                     let mut sel = Select::new();
-//                     let mut opers = [!0; 4];
-//                     for &i in &[0, 1, 2, 3] {
-//                         if let Some(c) = &c1[i] {
-//                             opers[i] = sel.send(c);
-//                         }
-//                     }
-
-//                     let oper = sel.select();
-//                     let mut index = !0;
-//                     for i in 0..4 {
-//                         if opers[i] == oper.index() {
-//                             index = i;
-//                             let _ = oper.send(c1[i].as_ref().unwrap(), 0);
-//                             break;
-//                         }
-//                     }
-//                     index
-//                 };
-
-//                 n[index] += 1;
-//                 if n[index] == N {
-//                     c1[index] = None;
-//                 }
-//             }
-//             wg.done();
-//         });
-
-//         wg.wait();
-//     }
-
-//     #[test]
-//     fn test_select_fairness() {
-//         const TRIALS: usize = 10000;
-
-//         let c1 = make::<u8>(TRIALS + 1);
-//         let c2 = make::<u8>(TRIALS + 1);
-
-//         for _ in 0..TRIALS + 1 {
-//             c1.send(1);
-//             c2.send(2);
-//         }
-
-//         let c3 = make::<u8>(0);
-//         let c4 = make::<u8>(0);
-//         let out = make::<u8>(0);
-//         let done = make::<u8>(0);
-//         let wg = WaitGroup::new();
-
-//         wg.add(1);
-//         go!(wg, c1, c2, c3, c4, out, done, {
-//             defer! { wg.done() };
-//             loop {
-//                 let b;
-//                 select! {
-//                     recv(c3.rx()) -> m => b = m.unwrap(),
-//                     recv(c4.rx()) -> m => b = m.unwrap(),
-//                     recv(c1.rx()) -> m => b = m.unwrap(),
-//                     recv(c2.rx()) -> m => b = m.unwrap(),
-//                 }
-//                 select! {
-//                     send(out.tx(), b) -> _ => {}
-//                     recv(done.rx()) -> _ => return,
-//                 }
-//             }
-//         });
-
-//         let (mut cnt1, mut cnt2) = (0, 0);
-//         for _ in 0..TRIALS {
-//             match out.recv() {
-//                 Some(1) => cnt1 += 1,
-//                 Some(2) => cnt2 += 1,
-//                 b => panic!("unexpected value {:?} on channel", b),
-//             }
-//         }
-
-//         // If the select in the goroutine is fair,
-//         // cnt1 and cnt2 should be about the same value.
-//         // With 10,000 trials, the expected margin of error at
-//         // a confidence level of five nines is 4.4172 / (2 * Sqrt(10000)).
-
-//         let r = cnt1 as f64 / TRIALS as f64;
-//         let e = (r - 0.5).abs();
-
-//         if e > 4.4172 / (2.0 * (TRIALS as f64).sqrt()) {
-//             panic!(
-//                 "unfair select: in {} trials, results were {}, {}",
-//                 TRIALS, cnt1, cnt2,
-//             );
-//         }
-
-//         done.close();
-//         wg.wait();
-//     }
-
-//     #[test]
-//     fn test_chan_send_interface() {
-//         struct Mt;
-
-//         let c = make::<Box<dyn Any>>(1);
-//         c.send(Box::new(Mt));
-
-//         select! {
-//             send(c.tx(), Box::new(Mt)) -> _ => {}
-//             default => {}
-//         }
-
-//         select! {
-//             send(c.tx(), Box::new(Mt)) -> _ => {}
-//             send(c.tx(), Box::new(Mt)) -> _ => {}
-//             default => {}
-//         }
-//     }
-
-//     #[test]
-//     fn test_pseudo_random_send() {
-//         const N: usize = 100;
-
-//         for cap in 0..N {
-//             let c = make::<i32>(cap);
-//             let l = Arc::new(Mutex::new(vec![0i32; N]));
-//             let done = make::<bool>(0);
-
-//             go!(c, done, l, {
-//                 let mut l = l.lock().unwrap();
-//                 for i in 0..N {
-//                     thread::yield_now();
-//                     l[i] = c.recv().unwrap();
-//                 }
-//                 done.send(true);
-//             });
-
-//             for _ in 0..N {
-//                 select! {
-//                     send(c.tx(), 1) -> _ => {}
-//                     send(c.tx(), 0) -> _ => {}
-//                 }
-//             }
-//             done.recv();
-
-//             let mut n0 = 0;
-//             let mut n1 = 0;
-//             for &i in l.lock().unwrap().iter() {
-//                 n0 += (i + 1) % 2;
-//                 n1 += i;
-//             }
-
-//             if n0 <= N as i32 / 10 || n1 <= N as i32 / 10 {
-//                 panic!(
-//                     "Want pseudorandom, got {} zeros and {} ones (chan cap {})",
-//                     n0, n1, cap,
-//                 );
-//             }
-//         }
-//     }
-
-//     #[test]
-//     fn test_multi_consumer() {
-//         const NWORK: usize = 23;
-//         const NITER: usize = 271828;
-
-//         let pn = [2, 3, 7, 11, 13, 17, 19, 23, 27, 31];
-
-//         let q = make::<i32>(NWORK * 3);
-//         let r = make::<i32>(NWORK * 3);
-
-//         let wg = WaitGroup::new();
-//         for i in 0..NWORK {
-//             wg.add(1);
-//             let w = i;
-//             go!(q, r, wg, pn, {
-//                 for v in &q {
-//                     if pn[w % pn.len()] == v {
-//                         thread::yield_now();
-//                     }
-//                     r.send(v);
-//                 }
-//                 wg.done();
-//             });
-//         }
-
-//         let expect = Arc::new(Mutex::new(0));
-//         go!(q, r, expect, wg, pn, {
-//             for i in 0..NITER {
-//                 let v = pn[i % pn.len()];
-//                 *expect.lock().unwrap() += v;
-//                 q.send(v);
-//             }
-//             q.close();
-//             wg.wait();
-//             r.close();
-//         });
-
-//         let mut n = 0;
-//         let mut s = 0;
-//         for v in &r {
-//             n += 1;
-//             s += v;
-//         }
-
-//         if n != NITER || s != *expect.lock().unwrap() {
-//             panic!();
-//         }
-//     }
-
-//     #[test]
-//     fn test_select_duplicate_channel() {
-//         // This test makes sure we can queue a G on
-//         // the same channel multiple times.
-//         let c = make::<i32>(0);
-//         let d = make::<i32>(0);
-//         let e = make::<i32>(0);
-
-//         go!(c, d, e, {
-//             select! {
-//                 recv(c.rx()) -> _ => {}
-//                 recv(d.rx()) -> _ => {}
-//                 recv(e.rx()) -> _ => {}
-//             }
-//             e.send(9);
-//         });
-//         thread::sleep(ms(1));
-
-//         go!(c, c.recv());
-//         thread::sleep(ms(1));
-
-//         d.send(7);
-//         e.recv();
-//         c.send(8);
-//     }
-// }
-
-// // https://github.com/golang/go/blob/master/test/closedchan.go
-// mod closedchan {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/src/runtime/chanbarrier_test.go
-// mod chanbarrier_test {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/src/runtime/race/testdata/chan_test.go
-// mod race_chan_test {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/test/ken/chan.go
-// mod chan {
-//     // TODO
-// }
-
-// // https://github.com/golang/go/blob/master/test/ken/chan1.go
-// mod chan1 {
-//     // TODO
-// }