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|
//! Tests for running multiple `cargo` processes at the same time.
use std::fs;
use std::net::TcpListener;
use std::process::Stdio;
use std::sync::mpsc::channel;
use std::thread;
use std::{env, str};
use cargo_test_support::cargo_process;
use cargo_test_support::git;
use cargo_test_support::install::assert_has_installed_exe;
use cargo_test_support::paths;
use cargo_test_support::prelude::*;
use cargo_test_support::registry::Package;
use cargo_test_support::str;
use cargo_test_support::{basic_manifest, execs, project, slow_cpu_multiplier};
fn pkg(name: &str, vers: &str) {
Package::new(name, vers)
.file("src/main.rs", "fn main() {{}}")
.publish();
}
#[cargo_test]
fn multiple_installs() {
let p = project()
.no_manifest()
.file("a/Cargo.toml", &basic_manifest("foo", "0.0.0"))
.file("a/src/main.rs", "fn main() {}")
.file("b/Cargo.toml", &basic_manifest("bar", "0.0.0"))
.file("b/src/main.rs", "fn main() {}");
let p = p.build();
let mut a = p.cargo("install").cwd("a").build_command();
let mut b = p.cargo("install").cwd("b").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
assert_has_installed_exe(paths::cargo_home(), "foo");
assert_has_installed_exe(paths::cargo_home(), "bar");
}
#[cargo_test]
fn concurrent_installs() {
const LOCKED_BUILD: &str = "waiting for file lock on build directory";
pkg("foo", "0.0.1");
pkg("bar", "0.0.1");
let mut a = cargo_process("install foo").build_command();
let mut b = cargo_process("install bar").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
assert!(!str::from_utf8(&a.stderr).unwrap().contains(LOCKED_BUILD));
assert!(!str::from_utf8(&b.stderr).unwrap().contains(LOCKED_BUILD));
execs().run_output(&a);
execs().run_output(&b);
assert_has_installed_exe(paths::cargo_home(), "foo");
assert_has_installed_exe(paths::cargo_home(), "bar");
}
#[cargo_test]
fn one_install_should_be_bad() {
let p = project()
.no_manifest()
.file("a/Cargo.toml", &basic_manifest("foo", "0.0.0"))
.file("a/src/main.rs", "fn main() {}")
.file("b/Cargo.toml", &basic_manifest("foo", "0.0.0"))
.file("b/src/main.rs", "fn main() {}");
let p = p.build();
let mut a = p.cargo("install").cwd("a").build_command();
let mut b = p.cargo("install").cwd("b").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
assert_has_installed_exe(paths::cargo_home(), "foo");
}
#[cargo_test]
fn multiple_registry_fetches() {
let mut pkg = Package::new("bar", "1.0.2");
for i in 0..10 {
let name = format!("foo{}", i);
Package::new(&name, "1.0.0").publish();
pkg.dep(&name, "*");
}
pkg.publish();
let p = project()
.no_manifest()
.file(
"a/Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.0"
[dependencies]
bar = "*"
"#,
)
.file("a/src/main.rs", "fn main() {}")
.file(
"b/Cargo.toml",
r#"
[package]
name = "bar"
authors = []
version = "0.0.0"
[dependencies]
bar = "*"
"#,
)
.file("b/src/main.rs", "fn main() {}");
let p = p.build();
let mut a = p.cargo("build").cwd("a").build_command();
let mut b = p.cargo("build").cwd("b").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
let suffix = env::consts::EXE_SUFFIX;
assert!(p
.root()
.join("a/target/debug")
.join(format!("foo{}", suffix))
.is_file());
assert!(p
.root()
.join("b/target/debug")
.join(format!("bar{}", suffix))
.is_file());
}
#[cargo_test]
fn git_same_repo_different_tags() {
let a = git::new("dep", |project| {
project
.file("Cargo.toml", &basic_manifest("dep", "0.5.0"))
.file("src/lib.rs", "pub fn tag1() {}")
});
let repo = git2::Repository::open(&a.root()).unwrap();
git::tag(&repo, "tag1");
a.change_file("src/lib.rs", "pub fn tag2() {}");
git::add(&repo);
git::commit(&repo);
git::tag(&repo, "tag2");
let p = project()
.no_manifest()
.file(
"a/Cargo.toml",
&format!(
r#"
[package]
name = "foo"
authors = []
version = "0.0.0"
[dependencies]
dep = {{ git = '{}', tag = 'tag1' }}
"#,
a.url()
),
)
.file(
"a/src/main.rs",
"extern crate dep; fn main() { dep::tag1(); }",
)
.file(
"b/Cargo.toml",
&format!(
r#"
[package]
name = "bar"
authors = []
version = "0.0.0"
[dependencies]
dep = {{ git = '{}', tag = 'tag2' }}
"#,
a.url()
),
)
.file(
"b/src/main.rs",
"extern crate dep; fn main() { dep::tag2(); }",
);
let p = p.build();
let mut a = p.cargo("build -v").cwd("a").build_command();
let mut b = p.cargo("build -v").cwd("b").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
}
#[cargo_test]
fn git_same_branch_different_revs() {
let a = git::new("dep", |project| {
project
.file("Cargo.toml", &basic_manifest("dep", "0.5.0"))
.file("src/lib.rs", "pub fn f1() {}")
});
let p = project()
.no_manifest()
.file(
"a/Cargo.toml",
&format!(
r#"
[package]
name = "foo"
authors = []
version = "0.0.0"
[dependencies]
dep = {{ git = '{}' }}
"#,
a.url()
),
)
.file(
"a/src/main.rs",
"extern crate dep; fn main() { dep::f1(); }",
)
.file(
"b/Cargo.toml",
&format!(
r#"
[package]
name = "bar"
authors = []
version = "0.0.0"
[dependencies]
dep = {{ git = '{}' }}
"#,
a.url()
),
)
.file(
"b/src/main.rs",
"extern crate dep; fn main() { dep::f2(); }",
);
let p = p.build();
// Generate a Cargo.lock pointing at the current rev, then clear out the
// target directory
p.cargo("build").cwd("a").run();
fs::remove_dir_all(p.root().join("a/target")).unwrap();
// Make a new commit on the master branch
let repo = git2::Repository::open(&a.root()).unwrap();
a.change_file("src/lib.rs", "pub fn f2() {}");
git::add(&repo);
git::commit(&repo);
// Now run both builds in parallel. The build of `b` should pick up the
// newest commit while the build of `a` should use the locked old commit.
let mut a = p.cargo("build").cwd("a").build_command();
let mut b = p.cargo("build").cwd("b").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
}
#[cargo_test]
fn same_project() {
let p = project()
.file("src/main.rs", "fn main() {}")
.file("src/lib.rs", "");
let p = p.build();
let mut a = p.cargo("build").build_command();
let mut b = p.cargo("build").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs().run_output(&a);
execs().run_output(&b);
}
// Make sure that if Cargo dies while holding a lock that it's released and the
// next Cargo to come in will take over cleanly.
#[cargo_test]
fn killing_cargo_releases_the_lock() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.0"
build = "build.rs"
"#,
)
.file("src/main.rs", "fn main() {}")
.file(
"build.rs",
r#"
use std::net::TcpStream;
fn main() {
if std::env::var("A").is_ok() {
TcpStream::connect(&std::env::var("ADDR").unwrap()[..])
.unwrap();
std::thread::sleep(std::time::Duration::new(10, 0));
}
}
"#,
);
let p = p.build();
// Our build script will connect to our local TCP socket to inform us that
// it's started and that's how we know that `a` will have the lock
// when we kill it.
let l = TcpListener::bind("127.0.0.1:0").unwrap();
let mut a = p.cargo("build").build_command();
let mut b = p.cargo("build").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
a.env("ADDR", l.local_addr().unwrap().to_string())
.env("A", "a");
b.env("ADDR", l.local_addr().unwrap().to_string())
.env_remove("A");
// Spawn `a`, wait for it to get to the build script (at which point the
// lock is held), then kill it.
let mut a = a.spawn().unwrap();
l.accept().unwrap();
a.kill().unwrap();
// Spawn `b`, then just finish the output of a/b the same way the above
// tests does.
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
// We killed `a`, so it shouldn't succeed, but `b` should have succeeded.
assert!(!a.status.success());
execs().run_output(&b);
}
#[cargo_test]
fn debug_release_ok() {
let p = project().file("src/main.rs", "fn main() {}");
let p = p.build();
p.cargo("build").run();
fs::remove_dir_all(p.root().join("target")).unwrap();
let mut a = p.cargo("build").build_command();
let mut b = p.cargo("build --release").build_command();
a.stdout(Stdio::piped()).stderr(Stdio::piped());
b.stdout(Stdio::piped()).stderr(Stdio::piped());
let a = a.spawn().unwrap();
let b = b.spawn().unwrap();
let a = thread::spawn(move || a.wait_with_output().unwrap());
let b = b.wait_with_output().unwrap();
let a = a.join().unwrap();
execs()
.with_stderr_data(str![[r#"
...
[COMPILING] foo v0.0.1 ([ROOT]/foo)
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
"#]])
.run_output(&a);
execs()
.with_stderr_data(str![[r#"
...
[COMPILING] foo v0.0.1 ([ROOT]/foo)
[FINISHED] `release` profile [optimized] target(s) in [ELAPSED]s
"#]])
.run_output(&b);
}
#[cargo_test]
fn no_deadlock_with_git_dependencies() {
let dep1 = git::new("dep1", |project| {
project
.file("Cargo.toml", &basic_manifest("dep1", "0.5.0"))
.file("src/lib.rs", "")
});
let dep2 = git::new("dep2", |project| {
project
.file("Cargo.toml", &basic_manifest("dep2", "0.5.0"))
.file("src/lib.rs", "")
});
let p = project()
.file(
"Cargo.toml",
&format!(
r#"
[package]
name = "foo"
authors = []
version = "0.0.0"
[dependencies]
dep1 = {{ git = '{}' }}
dep2 = {{ git = '{}' }}
"#,
dep1.url(),
dep2.url()
),
)
.file("src/main.rs", "fn main() { }");
let p = p.build();
let n_concurrent_builds = 5;
let (tx, rx) = channel();
for _ in 0..n_concurrent_builds {
let cmd = p
.cargo("build")
.build_command()
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.spawn();
let tx = tx.clone();
thread::spawn(move || {
let result = cmd.unwrap().wait_with_output().unwrap();
tx.send(result).unwrap()
});
}
for _ in 0..n_concurrent_builds {
let result = rx.recv_timeout(slow_cpu_multiplier(30)).expect("Deadlock!");
execs().run_output(&result);
}
}
|
