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cargo/tests/testsuite/freshness.rs
Alex Crichton 64a468261a Fix freshness checks for build scripts on renamed dirs 
This commit fixes an issue in Cargo where when an entire project
directory is renamed (preserving the target directory) then path
dependencies with build scripts would have their build scripts rereun
when building again. The problem with this was that when a build script
doesn't print `rerun-if-changed` Cargo's conservative fingerprint listed
an absolute path in it, which was intended to be a relative path.

The fix here is to use a relative path in the fingerprint to ensure that
it's not the reason a rebuild happens when directories are renamed.
2020-07-17 10:07:06 -07:00

2592 lines
66 KiB
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//! Tests for fingerprinting (rebuild detection).
use filetime::FileTime;
use std::fs::{self, OpenOptions};
use std::io;
use std::io::prelude::*;
use std::net::TcpListener;
use std::path::{Path, PathBuf};
use std::process::Stdio;
use std::thread;
use std::time::SystemTime;
use super::death;
use cargo_test_support::paths::{self, CargoPathExt};
use cargo_test_support::registry::Package;
use cargo_test_support::{basic_manifest, is_coarse_mtime, project, rustc_host, sleep_ms};
#[cargo_test]
fn modifying_and_moving() {
let p = project()
.file("src/main.rs", "mod a; fn main() {}")
.file("src/a.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build").with_stdout("").run();
p.root().move_into_the_past();
p.root().join("target").move_into_the_past();
p.change_file("src/a.rs", "#[allow(unused)]fn main() {}");
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
fs::rename(&p.root().join("src/a.rs"), &p.root().join("src/b.rs")).unwrap();
p.cargo("build")
.with_status(101)
.with_stderr_contains("[..]file not found[..]")
.run();
}
#[cargo_test]
fn modify_only_some_files() {
let p = project()
.file("src/lib.rs", "mod a;")
.file("src/a.rs", "")
.file("src/main.rs", "mod b; fn main() {}")
.file("src/b.rs", "")
.file("tests/test.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("test").run();
sleep_ms(1000);
assert!(p.bin("foo").is_file());
let lib = p.root().join("src/lib.rs");
p.change_file("src/lib.rs", "invalid rust code");
p.change_file("src/b.rs", "#[allow(unused)]fn foo() {}");
lib.move_into_the_past();
// Make sure the binary is rebuilt, not the lib
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
assert!(p.bin("foo").is_file());
}
#[cargo_test]
fn rebuild_sub_package_then_while_package() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.1"
[dependencies.a]
path = "a"
[dependencies.b]
path = "b"
"#,
)
.file("src/lib.rs", "extern crate a; extern crate b;")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
authors = []
version = "0.0.1"
[dependencies.b]
path = "../b"
"#,
)
.file("a/src/lib.rs", "extern crate b;")
.file("b/Cargo.toml", &basic_manifest("b", "0.0.1"))
.file("b/src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] b [..]
[COMPILING] a [..]
[COMPILING] foo [..]
[FINISHED] dev [..]
",
)
.run();
if is_coarse_mtime() {
sleep_ms(1000);
}
p.change_file("b/src/lib.rs", "pub fn b() {}");
p.cargo("build -pb -v")
.with_stderr(
"\
[COMPILING] b [..]
[RUNNING] `rustc --crate-name b [..]
[FINISHED] dev [..]
",
)
.run();
p.change_file(
"src/lib.rs",
"extern crate a; extern crate b; pub fn toplevel() {}",
);
p.cargo("build -v")
.with_stderr(
"\
[FRESH] b [..]
[COMPILING] a [..]
[RUNNING] `rustc --crate-name a [..]
[COMPILING] foo [..]
[RUNNING] `rustc --crate-name foo [..]
[FINISHED] dev [..]
",
)
.run();
}
#[cargo_test]
fn changing_lib_features_caches_targets() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.1"
[features]
foo = []
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build --features foo")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
/* Targets should be cached from the first build */
p.cargo("build")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
p.cargo("build").with_stdout("").run();
p.cargo("build --features foo")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
}
#[cargo_test]
fn changing_profiles_caches_targets() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.1"
[profile.dev]
panic = "abort"
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("test")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] target[..]debug[..]deps[..]foo-[..][EXE]
[DOCTEST] foo
",
)
.run();
/* Targets should be cached from the first build */
p.cargo("build")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
p.cargo("test foo")
.with_stderr(
"\
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] target[..]debug[..]deps[..]foo-[..][EXE]
",
)
.run();
}
#[cargo_test]
fn changing_bin_paths_common_target_features_caches_targets() {
// Make sure dep_cache crate is built once per feature
let p = project()
.no_manifest()
.file(
".cargo/config",
r#"
[build]
target-dir = "./target"
"#,
)
.file(
"dep_crate/Cargo.toml",
r#"
[package]
name = "dep_crate"
version = "0.0.1"
authors = []
[features]
ftest = []
"#,
)
.file(
"dep_crate/src/lib.rs",
r#"
#[cfg(feature = "ftest")]
pub fn yo() {
println!("ftest on")
}
#[cfg(not(feature = "ftest"))]
pub fn yo() {
println!("ftest off")
}
"#,
)
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.0.1"
authors = []
[dependencies]
dep_crate = {path = "../dep_crate", features = []}
"#,
)
.file("a/src/lib.rs", "")
.file(
"a/src/main.rs",
r#"
extern crate dep_crate;
use dep_crate::yo;
fn main() {
yo();
}
"#,
)
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.0.1"
authors = []
[dependencies]
dep_crate = {path = "../dep_crate", features = ["ftest"]}
"#,
)
.file("b/src/lib.rs", "")
.file(
"b/src/main.rs",
r#"
extern crate dep_crate;
use dep_crate::yo;
fn main() {
yo();
}
"#,
)
.build();
/* Build and rebuild a/. Ensure dep_crate only builds once */
p.cargo("run")
.cwd("a")
.with_stdout("ftest off")
.with_stderr(
"\
[..]Compiling dep_crate v0.0.1 ([..])
[..]Compiling a v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/a[EXE]`
",
)
.run();
p.cargo("clean -p a").cwd("a").run();
p.cargo("run")
.cwd("a")
.with_stdout("ftest off")
.with_stderr(
"\
[..]Compiling a v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/a[EXE]`
",
)
.run();
/* Build and rebuild b/. Ensure dep_crate only builds once */
p.cargo("run")
.cwd("b")
.with_stdout("ftest on")
.with_stderr(
"\
[..]Compiling dep_crate v0.0.1 ([..])
[..]Compiling b v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/b[EXE]`
",
)
.run();
p.cargo("clean -p b").cwd("b").run();
p.cargo("run")
.cwd("b")
.with_stdout("ftest on")
.with_stderr(
"\
[..]Compiling b v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/b[EXE]`
",
)
.run();
/* Build a/ package again. If we cache different feature dep builds correctly,
* this should not cause a rebuild of dep_crate */
p.cargo("clean -p a").cwd("a").run();
p.cargo("run")
.cwd("a")
.with_stdout("ftest off")
.with_stderr(
"\
[..]Compiling a v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/a[EXE]`
",
)
.run();
/* Build b/ package again. If we cache different feature dep builds correctly,
* this should not cause a rebuild */
p.cargo("clean -p b").cwd("b").run();
p.cargo("run")
.cwd("b")
.with_stdout("ftest on")
.with_stderr(
"\
[..]Compiling b v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[..]target/debug/b[EXE]`
",
)
.run();
}
#[cargo_test]
fn changing_bin_features_caches_targets() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.1"
[features]
foo = []
"#,
)
.file(
"src/main.rs",
r#"
fn main() {
let msg = if cfg!(feature = "foo") { "feature on" } else { "feature off" };
println!("{}", msg);
}
"#,
)
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.rename_run("foo", "off1").with_stdout("feature off").run();
p.cargo("build --features foo")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.rename_run("foo", "on1").with_stdout("feature on").run();
/* Targets should be cached from the first build */
let mut e = p.cargo("build");
// MSVC/apple does not include hash in binary filename, so it gets recompiled.
if cfg!(any(target_env = "msvc", target_vendor = "apple")) {
e.with_stderr("[COMPILING] foo[..]\n[FINISHED] dev[..]");
} else {
e.with_stderr("[FINISHED] dev[..]");
}
e.run();
p.rename_run("foo", "off2").with_stdout("feature off").run();
let mut e = p.cargo("build --features foo");
if cfg!(any(target_env = "msvc", target_vendor = "apple")) {
e.with_stderr("[COMPILING] foo[..]\n[FINISHED] dev[..]");
} else {
e.with_stderr("[FINISHED] dev[..]");
}
e.run();
p.rename_run("foo", "on2").with_stdout("feature on").run();
}
#[cargo_test]
fn rebuild_tests_if_lib_changes() {
let p = project()
.file("src/lib.rs", "pub fn foo() {}")
.file(
"tests/foo.rs",
r#"
extern crate foo;
#[test]
fn test() { foo::foo(); }
"#,
)
.build();
p.cargo("build").run();
p.cargo("test").run();
sleep_ms(1000);
p.change_file("src/lib.rs", "");
p.cargo("build -v").run();
p.cargo("test -v")
.with_status(101)
.with_stderr_contains("[..]cannot find function `foo`[..]")
.run();
}
#[cargo_test]
fn no_rebuild_transitive_target_deps() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
authors = []
[dependencies]
a = { path = "a" }
[dev-dependencies]
b = { path = "b" }
"#,
)
.file("src/lib.rs", "")
.file("tests/foo.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.0.1"
authors = []
[target.foo.dependencies]
c = { path = "../c" }
"#,
)
.file("a/src/lib.rs", "")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.0.1"
authors = []
[dependencies]
c = { path = "../c" }
"#,
)
.file("b/src/lib.rs", "")
.file("c/Cargo.toml", &basic_manifest("c", "0.0.1"))
.file("c/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("test --no-run")
.with_stderr(
"\
[COMPILING] c v0.0.1 ([..])
[COMPILING] b v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn rerun_if_changed_in_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file("src/lib.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.0.1"
authors = []
build = "build.rs"
"#,
)
.file(
"a/build.rs",
r#"
fn main() {
println!("cargo:rerun-if-changed=build.rs");
}
"#,
)
.file("a/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build").with_stdout("").run();
}
#[cargo_test]
fn same_build_dir_cached_packages() {
let p = project()
.no_manifest()
.file(
"a1/Cargo.toml",
r#"
[package]
name = "a1"
version = "0.0.1"
authors = []
[dependencies]
b = { path = "../b" }
"#,
)
.file("a1/src/lib.rs", "")
.file(
"a2/Cargo.toml",
r#"
[package]
name = "a2"
version = "0.0.1"
authors = []
[dependencies]
b = { path = "../b" }
"#,
)
.file("a2/src/lib.rs", "")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.0.1"
authors = []
[dependencies]
c = { path = "../c" }
"#,
)
.file("b/src/lib.rs", "")
.file(
"c/Cargo.toml",
r#"
[package]
name = "c"
version = "0.0.1"
authors = []
[dependencies]
d = { path = "../d" }
"#,
)
.file("c/src/lib.rs", "")
.file("d/Cargo.toml", &basic_manifest("d", "0.0.1"))
.file("d/src/lib.rs", "")
.file(
".cargo/config",
r#"
[build]
target-dir = "./target"
"#,
)
.build();
p.cargo("build")
.cwd("a1")
.with_stderr(&format!(
"\
[COMPILING] d v0.0.1 ({dir}/d)
[COMPILING] c v0.0.1 ({dir}/c)
[COMPILING] b v0.0.1 ({dir}/b)
[COMPILING] a1 v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
dir = p.url().to_file_path().unwrap().to_str().unwrap()
))
.run();
p.cargo("build")
.cwd("a2")
.with_stderr(
"\
[COMPILING] a2 v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn no_rebuild_if_build_artifacts_move_backwards_in_time() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file("src/lib.rs", "")
.file("a/Cargo.toml", &basic_manifest("a", "0.0.1"))
.file("a/src/lib.rs", "")
.build();
p.cargo("build").run();
p.root().move_into_the_past();
p.cargo("build")
.with_stdout("")
.with_stderr("[FINISHED] [..]")
.run();
}
#[cargo_test]
fn rebuild_if_build_artifacts_move_forward_in_time() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file("src/lib.rs", "")
.file("a/Cargo.toml", &basic_manifest("a", "0.0.1"))
.file("a/src/lib.rs", "")
.build();
p.cargo("build").run();
p.root().move_into_the_future();
p.cargo("build")
.env("CARGO_LOG", "")
.with_stdout("")
.with_stderr(
"\
[COMPILING] a v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn rebuild_if_environment_changes() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
description = "old desc"
version = "0.0.1"
authors = []
"#,
)
.file(
"src/main.rs",
r#"
fn main() {
println!("{}", env!("CARGO_PKG_DESCRIPTION"));
}
"#,
)
.build();
p.cargo("run")
.with_stdout("old desc")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `target/debug/foo[EXE]`
",
)
.run();
p.change_file(
"Cargo.toml",
r#"
[package]
name = "foo"
description = "new desc"
version = "0.0.1"
authors = []
"#,
);
p.cargo("run")
.with_stdout("new desc")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `target/debug/foo[EXE]`
",
)
.run();
}
#[cargo_test]
fn no_rebuild_when_rename_dir() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[workspace]
[dependencies]
foo = { path = "foo" }
"#,
)
.file("src/_unused.rs", "")
.file("build.rs", "fn main() {}")
.file("foo/Cargo.toml", &basic_manifest("foo", "0.0.1"))
.file("foo/src/lib.rs", "")
.file("foo/build.rs", "fn main() {}")
.build();
// make sure the most recently modified file is `src/lib.rs`, not
// `Cargo.toml`, to expose a historical bug where we forgot to strip the
// `Cargo.toml` path from looking for the package root.
cargo_test_support::sleep_ms(100);
fs::write(p.root().join("src/lib.rs"), "").unwrap();
p.cargo("build").run();
let mut new = p.root();
new.pop();
new.push("bar");
fs::rename(p.root(), &new).unwrap();
p.cargo("build")
.cwd(&new)
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
}
#[cargo_test]
fn unused_optional_dep() {
Package::new("registry1", "0.1.0").publish();
Package::new("registry2", "0.1.0").publish();
Package::new("registry3", "0.1.0").publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "p"
authors = []
version = "0.1.0"
[dependencies]
bar = { path = "bar" }
baz = { path = "baz" }
registry1 = "*"
"#,
)
.file("src/lib.rs", "")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
authors = []
[dev-dependencies]
registry2 = "*"
"#,
)
.file("bar/src/lib.rs", "")
.file(
"baz/Cargo.toml",
r#"
[package]
name = "baz"
version = "0.1.1"
authors = []
[dependencies]
registry3 = { version = "*", optional = true }
"#,
)
.file("baz/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build").with_stderr("[FINISHED] [..]").run();
}
#[cargo_test]
fn path_dev_dep_registry_updates() {
Package::new("registry1", "0.1.0").publish();
Package::new("registry2", "0.1.0").publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "p"
authors = []
version = "0.1.0"
[dependencies]
bar = { path = "bar" }
"#,
)
.file("src/lib.rs", "")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
authors = []
[dependencies]
registry1 = "*"
[dev-dependencies]
baz = { path = "../baz"}
"#,
)
.file("bar/src/lib.rs", "")
.file(
"baz/Cargo.toml",
r#"
[package]
name = "baz"
version = "0.1.1"
authors = []
[dependencies]
registry2 = "*"
"#,
)
.file("baz/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build").with_stderr("[FINISHED] [..]").run();
}
#[cargo_test]
fn change_panic_mode() {
let p = project()
.file(
"Cargo.toml",
r#"
[workspace]
members = ['bar', 'baz']
[profile.dev]
panic = 'abort'
"#,
)
.file("src/lib.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.1.1"))
.file("bar/src/lib.rs", "")
.file(
"baz/Cargo.toml",
r#"
[package]
name = "baz"
version = "0.1.1"
authors = []
[lib]
proc-macro = true
[dependencies]
bar = { path = '../bar' }
"#,
)
.file("baz/src/lib.rs", "extern crate bar;")
.build();
p.cargo("build -p bar").run();
p.cargo("build -p baz").run();
}
#[cargo_test]
fn dont_rebuild_based_on_plugins() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
[workspace]
members = ['baz']
[dependencies]
proc-macro-thing = { path = 'proc-macro-thing' }
"#,
)
.file("src/lib.rs", "")
.file(
"proc-macro-thing/Cargo.toml",
r#"
[package]
name = "proc-macro-thing"
version = "0.1.1"
[lib]
proc-macro = true
[dependencies]
qux = { path = '../qux' }
"#,
)
.file("proc-macro-thing/src/lib.rs", "")
.file(
"baz/Cargo.toml",
r#"
[package]
name = "baz"
version = "0.1.1"
[dependencies]
qux = { path = '../qux' }
"#,
)
.file("baz/src/main.rs", "fn main() {}")
.file("qux/Cargo.toml", &basic_manifest("qux", "0.1.1"))
.file("qux/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build -p baz").run();
p.cargo("build").with_stderr("[FINISHED] [..]\n").run();
p.cargo("build -p bar")
.with_stderr("[FINISHED] [..]\n")
.run();
}
#[cargo_test]
fn reuse_workspace_lib() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
[workspace]
[dependencies]
baz = { path = 'baz' }
"#,
)
.file("src/lib.rs", "")
.file("baz/Cargo.toml", &basic_manifest("baz", "0.1.1"))
.file("baz/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("test -p baz -v --no-run")
.with_stderr(
"\
[COMPILING] baz v0.1.1 ([..])
[RUNNING] `rustc[..] --test [..]`
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn reuse_shared_build_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[dependencies]
shared = {path = "shared"}
[workspace]
members = ["shared", "bar"]
"#,
)
.file("src/main.rs", "fn main() {}")
.file("shared/Cargo.toml", &basic_manifest("shared", "0.0.1"))
.file("shared/src/lib.rs", "")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
[build-dependencies]
shared = { path = "../shared" }
"#,
)
.file("bar/src/lib.rs", "")
.file("bar/build.rs", "fn main() {}")
.build();
p.cargo("build --workspace").run();
// This should not recompile!
p.cargo("build -p foo -v")
.with_stderr(
"\
[FRESH] shared [..]
[FRESH] foo [..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn changing_rustflags_is_cached() {
let p = project().file("src/lib.rs", "").build();
// This isn't ever cached, we always have to recompile
for _ in 0..2 {
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
p.cargo("build")
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
}
}
#[cargo_test]
fn update_dependency_mtime_does_not_rebuild() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[dependencies]
bar = { path = "bar" }
"#,
)
.file("src/lib.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr(
"\
[COMPILING] bar v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
// This does not make new files, but it does update the mtime of the dependency.
p.cargo("build -p bar -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
// This should not recompile!
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
}
fn fingerprint_cleaner(mut dir: PathBuf, timestamp: filetime::FileTime) {
// Cargo is experimenting with letting outside projects develop some
// limited forms of GC for target_dir. This is one of the forms.
// Specifically, Cargo is updating the mtime of a file in
// target/profile/.fingerprint each time it uses the fingerprint.
// So a cleaner can remove files associated with a fingerprint
// if all the files in the fingerprint's folder are older then a time stamp without
// effecting any builds that happened since that time stamp.
let mut cleand = false;
dir.push(".fingerprint");
for fing in fs::read_dir(&dir).unwrap() {
let fing = fing.unwrap();
let outdated = |f: io::Result<fs::DirEntry>| {
filetime::FileTime::from_last_modification_time(&f.unwrap().metadata().unwrap())
<= timestamp
};
if fs::read_dir(fing.path()).unwrap().all(outdated) {
fs::remove_dir_all(fing.path()).unwrap();
println!("remove: {:?}", fing.path());
// a real cleaner would remove the big files in deps and build as well
// but fingerprint is sufficient for our tests
cleand = true;
} else {
}
}
assert!(
cleand,
"called fingerprint_cleaner, but there was nothing to remove"
);
}
#[cargo_test]
fn fingerprint_cleaner_does_not_rebuild() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[dependencies]
bar = { path = "bar" }
[features]
a = []
"#,
)
.file("src/lib.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.run();
p.cargo("build -Z mtime-on-use --features a")
.masquerade_as_nightly_cargo()
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
if is_coarse_mtime() {
sleep_ms(1000);
}
let timestamp = filetime::FileTime::from_system_time(SystemTime::now());
if is_coarse_mtime() {
sleep_ms(1000);
}
// This does not make new files, but it does update the mtime.
p.cargo("build -Z mtime-on-use --features a")
.masquerade_as_nightly_cargo()
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
fingerprint_cleaner(p.target_debug_dir(), timestamp);
// This should not recompile!
p.cargo("build -Z mtime-on-use --features a")
.masquerade_as_nightly_cargo()
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
// But this should be cleaned and so need a rebuild
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
}
#[cargo_test]
fn reuse_panic_build_dep_test() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[build-dependencies]
bar = { path = "bar" }
[dev-dependencies]
bar = { path = "bar" }
[profile.dev]
panic = "abort"
"#,
)
.file("src/lib.rs", "")
.file("build.rs", "fn main() {}")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
// Check that `bar` is not built twice. It is only needed once (without `panic`).
p.cargo("test --lib --no-run -v")
.with_stderr(
"\
[COMPILING] bar [..]
[RUNNING] `rustc --crate-name bar [..]
[COMPILING] foo [..]
[RUNNING] `rustc --crate-name build_script_build [..]
[RUNNING] [..]build-script-build`
[RUNNING] `rustc --crate-name foo src/lib.rs [..]--test[..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn reuse_panic_pm() {
// foo(panic) -> bar(panic)
// somepm(nopanic) -> bar(nopanic)
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[dependencies]
bar = { path = "bar" }
somepm = { path = "somepm" }
[profile.dev]
panic = "abort"
"#,
)
.file("src/lib.rs", "extern crate bar;")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.file(
"somepm/Cargo.toml",
r#"
[package]
name = "somepm"
version = "0.0.1"
[lib]
proc-macro = true
[dependencies]
bar = { path = "../bar" }
"#,
)
.file("somepm/src/lib.rs", "extern crate bar;")
.build();
// bar is built once without panic (for proc-macro) and once with (for the
// normal dependency).
p.cargo("build -v")
.with_stderr_unordered(
"\
[COMPILING] bar [..]
[RUNNING] `rustc --crate-name bar bar/src/lib.rs [..]--crate-type lib --emit=[..]link[..]-C debuginfo=2 [..]
[RUNNING] `rustc --crate-name bar bar/src/lib.rs [..]--crate-type lib --emit=[..]link -C panic=abort[..]-C debuginfo=2 [..]
[COMPILING] somepm [..]
[RUNNING] `rustc --crate-name somepm [..]
[COMPILING] foo [..]
[RUNNING] `rustc --crate-name foo src/lib.rs [..]-C panic=abort[..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn bust_patched_dep() {
Package::new("registry1", "0.1.0").publish();
Package::new("registry2", "0.1.0")
.dep("registry1", "0.1.0")
.publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
[dependencies]
registry2 = "0.1.0"
[patch.crates-io]
registry1 = { path = "reg1new" }
"#,
)
.file("src/lib.rs", "")
.file("reg1new/Cargo.toml", &basic_manifest("registry1", "0.1.0"))
.file("reg1new/src/lib.rs", "")
.build();
p.cargo("build").run();
if is_coarse_mtime() {
sleep_ms(1000);
}
p.change_file("reg1new/src/lib.rs", "");
if is_coarse_mtime() {
sleep_ms(1000);
}
p.cargo("build")
.with_stderr(
"\
[COMPILING] registry1 v0.1.0 ([..])
[COMPILING] registry2 v0.1.0
[COMPILING] foo v0.0.1 ([..])
[FINISHED] [..]
",
)
.run();
p.cargo("build -v")
.with_stderr(
"\
[FRESH] registry1 v0.1.0 ([..])
[FRESH] registry2 v0.1.0
[FRESH] foo v0.0.1 ([..])
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn rebuild_on_mid_build_file_modification() {
let server = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = server.local_addr().unwrap();
let p = project()
.file(
"Cargo.toml",
r#"
[workspace]
members = ["root", "proc_macro_dep"]
"#,
)
.file(
"root/Cargo.toml",
r#"
[package]
name = "root"
version = "0.1.0"
authors = []
[dependencies]
proc_macro_dep = { path = "../proc_macro_dep" }
"#,
)
.file(
"root/src/lib.rs",
r#"
#[macro_use]
extern crate proc_macro_dep;
#[derive(Noop)]
pub struct X;
"#,
)
.file(
"proc_macro_dep/Cargo.toml",
r#"
[package]
name = "proc_macro_dep"
version = "0.1.0"
authors = []
[lib]
proc-macro = true
"#,
)
.file(
"proc_macro_dep/src/lib.rs",
&format!(
r#"
extern crate proc_macro;
use std::io::Read;
use std::net::TcpStream;
use proc_macro::TokenStream;
#[proc_macro_derive(Noop)]
pub fn noop(_input: TokenStream) -> TokenStream {{
let mut stream = TcpStream::connect("{}").unwrap();
let mut v = Vec::new();
stream.read_to_end(&mut v).unwrap();
"".parse().unwrap()
}}
"#,
addr
),
)
.build();
let root = p.root();
let t = thread::spawn(move || {
let socket = server.accept().unwrap().0;
sleep_ms(1000);
let mut file = OpenOptions::new()
.write(true)
.append(true)
.open(root.join("root/src/lib.rs"))
.unwrap();
writeln!(file, "// modified").expect("Failed to append to root sources");
drop(file);
drop(socket);
drop(server.accept().unwrap());
});
p.cargo("build")
.with_stderr(
"\
[COMPILING] proc_macro_dep v0.1.0 ([..]/proc_macro_dep)
[COMPILING] root v0.1.0 ([..]/root)
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build")
.with_stderr(
"\
[COMPILING] root v0.1.0 ([..]/root)
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
t.join().ok().unwrap();
}
#[cargo_test]
fn dirty_both_lib_and_test() {
// This tests that all artifacts that depend on the results of a build
// script will get rebuilt when the build script reruns, even for separate
// commands. It does the following:
//
// 1. Project "foo" has a build script which will compile a small
// staticlib to link against. Normally this would use the `cc` crate,
// but here we just use rustc to avoid the `cc` dependency.
// 2. Build the library.
// 3. Build the unit test. The staticlib intentionally has a bad value.
// 4. Rewrite the staticlib with the correct value.
// 5. Build the library again.
// 6. Build the unit test. This should recompile.
let slib = |n| {
format!(
r#"
#[no_mangle]
pub extern "C" fn doit() -> i32 {{
return {};
}}
"#,
n
)
};
let p = project()
.file(
"src/lib.rs",
r#"
extern "C" {
fn doit() -> i32;
}
#[test]
fn t1() {
assert_eq!(unsafe { doit() }, 1, "doit assert failure");
}
"#,
)
.file(
"build.rs",
r#"
use std::env;
use std::path::PathBuf;
use std::process::Command;
fn main() {
let rustc = env::var_os("RUSTC").unwrap();
let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
assert!(
Command::new(rustc)
.args(&[
"--crate-type=staticlib",
"--out-dir",
out_dir.to_str().unwrap(),
"slib.rs"
])
.status()
.unwrap()
.success(),
"slib build failed"
);
println!("cargo:rustc-link-lib=slib");
println!("cargo:rustc-link-search={}", out_dir.display());
}
"#,
)
.file("slib.rs", &slib(2))
.build();
p.cargo("build").run();
// 2 != 1
p.cargo("test --lib")
.with_status(101)
.with_stdout_contains("[..]doit assert failure[..]")
.run();
if is_coarse_mtime() {
// #5918
sleep_ms(1000);
}
// Fix the mistake.
p.change_file("slib.rs", &slib(1));
p.cargo("build").run();
// This should recompile with the new static lib, and the test should pass.
p.cargo("test --lib").run();
}
#[cargo_test]
fn script_fails_stay_dirty() {
// Check if a script is aborted (such as hitting Ctrl-C) that it will re-run.
// Steps:
// 1. Build to establish fingerprints.
// 2. Make a change that triggers the build script to re-run. Abort the
// script while it is running.
// 3. Run the build again and make sure it re-runs the script.
let p = project()
.file(
"build.rs",
r#"
mod helper;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
helper::doit();
}
"#,
)
.file("helper.rs", "pub fn doit() {}")
.file("src/lib.rs", "")
.build();
p.cargo("build").run();
if is_coarse_mtime() {
sleep_ms(1000);
}
p.change_file("helper.rs", r#"pub fn doit() {panic!("Crash!");}"#);
p.cargo("build")
.with_stderr_contains("[..]Crash![..]")
.with_status(101)
.run();
// There was a bug where this second call would be "fresh".
p.cargo("build")
.with_stderr_contains("[..]Crash![..]")
.with_status(101)
.run();
}
#[cargo_test]
fn simulated_docker_deps_stay_cached() {
// Test what happens in docker where the nanoseconds are zeroed out.
Package::new("regdep", "1.0.0").publish();
Package::new("regdep_old_style", "1.0.0")
.file("build.rs", "fn main() {}")
.file("src/lib.rs", "")
.publish();
Package::new("regdep_env", "1.0.0")
.file(
"build.rs",
r#"
fn main() {
println!("cargo:rerun-if-env-changed=SOMEVAR");
}
"#,
)
.file("src/lib.rs", "")
.publish();
Package::new("regdep_rerun", "1.0.0")
.file(
"build.rs",
r#"
fn main() {
println!("cargo:rerun-if-changed=build.rs");
}
"#,
)
.file("src/lib.rs", "")
.publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[dependencies]
pathdep = { path = "pathdep" }
regdep = "1.0"
regdep_old_style = "1.0"
regdep_env = "1.0"
regdep_rerun = "1.0"
"#,
)
.file(
"src/lib.rs",
"
extern crate pathdep;
extern crate regdep;
extern crate regdep_old_style;
extern crate regdep_env;
extern crate regdep_rerun;
",
)
.file("build.rs", "fn main() {}")
.file("pathdep/Cargo.toml", &basic_manifest("pathdep", "1.0.0"))
.file("pathdep/src/lib.rs", "")
.build();
p.cargo("build").run();
let already_zero = {
// This happens on HFS with 1-second timestamp resolution,
// or other filesystems where it just so happens to write exactly on a
// 1-second boundary.
let metadata = fs::metadata(p.root().join("src/lib.rs")).unwrap();
let mtime = FileTime::from_last_modification_time(&metadata);
mtime.nanoseconds() == 0
};
// Recursively remove `nanoseconds` from every path.
fn zeropath(path: &Path) {
for entry in walkdir::WalkDir::new(path)
.into_iter()
.filter_map(|e| e.ok())
{
let metadata = fs::metadata(entry.path()).unwrap();
let mtime = metadata.modified().unwrap();
let mtime_duration = mtime.duration_since(SystemTime::UNIX_EPOCH).unwrap();
let trunc_mtime = FileTime::from_unix_time(mtime_duration.as_secs() as i64, 0);
let atime = metadata.accessed().unwrap();
let atime_duration = atime.duration_since(SystemTime::UNIX_EPOCH).unwrap();
let trunc_atime = FileTime::from_unix_time(atime_duration.as_secs() as i64, 0);
if let Err(e) = filetime::set_file_times(entry.path(), trunc_atime, trunc_mtime) {
// Windows doesn't allow changing filetimes on some things
// (directories, other random things I'm not sure why). Just
// ignore them.
if e.kind() == std::io::ErrorKind::PermissionDenied {
println!("PermissionDenied filetime on {:?}", entry.path());
} else {
panic!("FileTime error on {:?}: {:?}", entry.path(), e);
}
}
}
}
zeropath(&p.root());
zeropath(&paths::home());
if already_zero {
println!("already zero");
// If it was already truncated, then everything stays fresh.
p.cargo("build -v")
.with_stderr_unordered(
"\
[FRESH] pathdep [..]
[FRESH] regdep [..]
[FRESH] regdep_env [..]
[FRESH] regdep_old_style [..]
[FRESH] regdep_rerun [..]
[FRESH] foo [..]
[FINISHED] [..]
",
)
.run();
} else {
println!("not already zero");
// It is not ideal that `foo` gets recompiled, but that is the current
// behavior. Currently mtimes are ignored for registry deps.
//
// Note that this behavior is due to the fact that `foo` has a build
// script in "old" mode where it doesn't print `rerun-if-*`. In this
// mode we use `Precalculated` to fingerprint a path dependency, where
// `Precalculated` is an opaque string which has the most recent mtime
// in it. It differs between builds because one has nsec=0 and the other
// likely has a nonzero nsec. Hence, the rebuild.
p.cargo("build -v")
.with_stderr_unordered(
"\
[FRESH] pathdep [..]
[FRESH] regdep [..]
[FRESH] regdep_env [..]
[FRESH] regdep_old_style [..]
[FRESH] regdep_rerun [..]
[COMPILING] foo [..]
[RUNNING] [..]/foo-[..]/build-script-build[..]
[RUNNING] `rustc --crate-name foo[..]
[FINISHED] [..]
",
)
.run();
}
}
#[cargo_test]
fn metadata_change_invalidates() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build").run();
for attr in &[
"authors = [\"foo\"]",
"description = \"desc\"",
"homepage = \"https://example.com\"",
"repository =\"https://example.com\"",
] {
let mut file = OpenOptions::new()
.write(true)
.append(true)
.open(p.root().join("Cargo.toml"))
.unwrap();
writeln!(file, "{}", attr).unwrap();
p.cargo("build")
.with_stderr_contains("[COMPILING] foo [..]")
.run();
}
p.cargo("build -v")
.with_stderr_contains("[FRESH] foo[..]")
.run();
assert_eq!(p.glob("target/debug/deps/libfoo-*.rlib").count(), 1);
}
#[cargo_test]
fn edition_change_invalidates() {
const MANIFEST: &str = r#"
[package]
name = "foo"
version = "0.1.0"
"#;
let p = project()
.file("Cargo.toml", MANIFEST)
.file("src/lib.rs", "")
.build();
p.cargo("build").run();
p.change_file("Cargo.toml", &format!("{}edition = \"2018\"", MANIFEST));
p.cargo("build")
.with_stderr_contains("[COMPILING] foo [..]")
.run();
p.change_file(
"Cargo.toml",
&format!(
r#"{}edition = "2018"
[lib]
edition = "2015"
"#,
MANIFEST
),
);
p.cargo("build")
.with_stderr_contains("[COMPILING] foo [..]")
.run();
p.cargo("build -v")
.with_stderr_contains("[FRESH] foo[..]")
.run();
assert_eq!(p.glob("target/debug/deps/libfoo-*.rlib").count(), 1);
}
#[cargo_test]
fn rename_with_path_deps() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.5.0"
authors = []
[dependencies]
a = { path = 'a' }
"#,
)
.file("src/lib.rs", "extern crate a; pub fn foo() { a::foo(); }")
.file(
"a/Cargo.toml",
r#"
[project]
name = "a"
version = "0.5.0"
authors = []
[dependencies]
b = { path = 'b' }
"#,
)
.file("a/src/lib.rs", "extern crate b; pub fn foo() { b::foo() }")
.file(
"a/b/Cargo.toml",
r#"
[project]
name = "b"
version = "0.5.0"
authors = []
"#,
)
.file("a/b/src/lib.rs", "pub fn foo() { }");
let p = p.build();
p.cargo("build").run();
// Now rename the root directory and rerun `cargo run`. Not only should we
// not build anything but we also shouldn't crash.
let mut new = p.root();
new.pop();
new.push("foo2");
fs::rename(p.root(), &new).unwrap();
p.cargo("build")
.cwd(&new)
.with_stderr("[FINISHED] [..]")
.run();
}
#[cargo_test]
fn move_target_directory_with_path_deps() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.5.0"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file(
"a/Cargo.toml",
r#"
[project]
name = "a"
version = "0.5.0"
authors = []
"#,
)
.file("src/lib.rs", "extern crate a; pub use a::print_msg;")
.file(
"a/build.rs",
r###"
use std::env;
use std::fs;
use std::path::Path;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
let out_dir = env::var("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("hello.rs");
fs::write(&dest_path, r#"
pub fn message() -> &'static str {
"Hello, World!"
}
"#).unwrap();
}
"###,
)
.file(
"a/src/lib.rs",
r#"
include!(concat!(env!("OUT_DIR"), "/hello.rs"));
pub fn print_msg() { message(); }
"#,
);
let p = p.build();
let mut parent = p.root();
parent.pop();
p.cargo("build").run();
let new_target = p.root().join("target2");
fs::rename(p.root().join("target"), &new_target).unwrap();
p.cargo("build")
.env("CARGO_TARGET_DIR", &new_target)
.with_stderr("[FINISHED] [..]")
.run();
}
#[cargo_test]
fn rerun_if_changes() {
let p = project()
.file(
"build.rs",
r#"
fn main() {
println!("cargo:rerun-if-env-changed=FOO");
if std::env::var("FOO").is_ok() {
println!("cargo:rerun-if-env-changed=BAR");
}
}
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build").with_stderr("[FINISHED] [..]").run();
p.cargo("build -v")
.env("FOO", "1")
.with_stderr(
"\
[COMPILING] foo [..]
[RUNNING] `[..]build-script-build`
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
p.cargo("build")
.env("FOO", "1")
.with_stderr("[FINISHED] [..]")
.run();
p.cargo("build -v")
.env("FOO", "1")
.env("BAR", "1")
.with_stderr(
"\
[COMPILING] foo [..]
[RUNNING] `[..]build-script-build`
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
p.cargo("build")
.env("FOO", "1")
.env("BAR", "1")
.with_stderr("[FINISHED] [..]")
.run();
p.cargo("build -v")
.env("BAR", "2")
.with_stderr(
"\
[COMPILING] foo [..]
[RUNNING] `[..]build-script-build`
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
p.cargo("build")
.env("BAR", "2")
.with_stderr("[FINISHED] [..]")
.run();
}
#[cargo_test]
fn channel_shares_filenames() {
// Test that different "nightly" releases use the same output filename.
// Create separate rustc binaries to emulate running different toolchains.
let nightly1 = format!(
"\
rustc 1.44.0-nightly (38114ff16 2020-03-21)
binary: rustc
commit-hash: 38114ff16e7856f98b2b4be7ab4cd29b38bed59a
commit-date: 2020-03-21
host: {}
release: 1.44.0-nightly
LLVM version: 9.0
",
rustc_host()
);
let nightly2 = format!(
"\
rustc 1.44.0-nightly (a5b09d354 2020-03-31)
binary: rustc
commit-hash: a5b09d35473615e7142f5570f5c5fad0caf68bd2
commit-date: 2020-03-31
host: {}
release: 1.44.0-nightly
LLVM version: 9.0
",
rustc_host()
);
let beta1 = format!(
"\
rustc 1.43.0-beta.3 (4c587bbda 2020-03-25)
binary: rustc
commit-hash: 4c587bbda04ab55aaf56feab11dfdfe387a85d7a
commit-date: 2020-03-25
host: {}
release: 1.43.0-beta.3
LLVM version: 9.0
",
rustc_host()
);
let beta2 = format!(
"\
rustc 1.42.0-beta.5 (4e1c5f0e9 2020-02-28)
binary: rustc
commit-hash: 4e1c5f0e9769a588b91c977e3d81e140209ef3a2
commit-date: 2020-02-28
host: {}
release: 1.42.0-beta.5
LLVM version: 9.0
",
rustc_host()
);
let stable1 = format!(
"\
rustc 1.42.0 (b8cedc004 2020-03-09)
binary: rustc
commit-hash: b8cedc00407a4c56a3bda1ed605c6fc166655447
commit-date: 2020-03-09
host: {}
release: 1.42.0
LLVM version: 9.0
",
rustc_host()
);
let stable2 = format!(
"\
rustc 1.41.1 (f3e1a954d 2020-02-24)
binary: rustc
commit-hash: f3e1a954d2ead4e2fc197c7da7d71e6c61bad196
commit-date: 2020-02-24
host: {}
release: 1.41.1
LLVM version: 9.0
",
rustc_host()
);
let compiler = project()
.at("compiler")
.file("Cargo.toml", &basic_manifest("compiler", "0.1.0"))
.file(
"src/main.rs",
r#"
fn main() {
if std::env::args_os().any(|a| a == "-vV") {
print!("{}", env!("FUNKY_VERSION_TEST"));
return;
}
let mut cmd = std::process::Command::new("rustc");
cmd.args(std::env::args_os().skip(1));
assert!(cmd.status().unwrap().success());
}
"#,
)
.build();
let makeit = |version, vv| {
// Force a rebuild.
compiler.target_debug_dir().join("deps").rm_rf();
compiler.cargo("build").env("FUNKY_VERSION_TEST", vv).run();
fs::rename(compiler.bin("compiler"), compiler.bin(version)).unwrap();
};
makeit("nightly1", nightly1);
makeit("nightly2", nightly2);
makeit("beta1", beta1);
makeit("beta2", beta2);
makeit("stable1", stable1);
makeit("stable2", stable2);
// Run `cargo check` with different rustc versions to observe its behavior.
let p = project().file("src/lib.rs", "").build();
// Runs `cargo check` and returns the rmeta filename created.
// Checks that the freshness matches the given value.
let check = |version, fresh| -> String {
let output = p
.cargo("check --message-format=json")
.env("RUSTC", compiler.bin(version))
.exec_with_output()
.unwrap();
// Collect the filenames generated.
let mut artifacts: Vec<_> = std::str::from_utf8(&output.stdout)
.unwrap()
.lines()
.filter_map(|line| {
let value: serde_json::Value = serde_json::from_str(line).unwrap();
if value["reason"].as_str().unwrap() == "compiler-artifact" {
assert_eq!(value["fresh"].as_bool().unwrap(), fresh);
let filenames = value["filenames"].as_array().unwrap();
assert_eq!(filenames.len(), 1);
Some(filenames[0].to_string())
} else {
None
}
})
.collect();
// Should only generate one rmeta file.
assert_eq!(artifacts.len(), 1);
artifacts.pop().unwrap()
};
let nightly1_name = check("nightly1", false);
assert_eq!(check("nightly1", true), nightly1_name);
assert_eq!(check("nightly2", false), nightly1_name); // same as before
assert_eq!(check("nightly2", true), nightly1_name);
// Should rebuild going back to nightly1.
assert_eq!(check("nightly1", false), nightly1_name);
let beta1_name = check("beta1", false);
assert_ne!(beta1_name, nightly1_name);
assert_eq!(check("beta1", true), beta1_name);
assert_eq!(check("beta2", false), beta1_name); // same as before
assert_eq!(check("beta2", true), beta1_name);
// Should rebuild going back to beta1.
assert_eq!(check("beta1", false), beta1_name);
let stable1_name = check("stable1", false);
assert_ne!(stable1_name, nightly1_name);
assert_ne!(stable1_name, beta1_name);
let stable2_name = check("stable2", false);
assert_ne!(stable1_name, stable2_name);
// Check everything is fresh.
assert_eq!(check("stable1", true), stable1_name);
assert_eq!(check("stable2", true), stable2_name);
assert_eq!(check("beta1", true), beta1_name);
assert_eq!(check("nightly1", true), nightly1_name);
}
#[cargo_test]
fn linking_interrupted() {
// Interrupt during the linking phase shouldn't leave test executable as "fresh".
// This is used to detect when linking starts, then to pause the linker so
// that the test can kill cargo.
let link_listener = TcpListener::bind("127.0.0.1:0").unwrap();
let link_addr = link_listener.local_addr().unwrap();
// This is used to detect when rustc exits.
let rustc_listener = TcpListener::bind("127.0.0.1:0").unwrap();
let rustc_addr = rustc_listener.local_addr().unwrap();
// Create a linker that we can interrupt.
let linker = project()
.at("linker")
.file("Cargo.toml", &basic_manifest("linker", "1.0.0"))
.file(
"src/main.rs",
&r#"
fn main() {
// Figure out the output filename.
let output = match std::env::args().find(|a| a.starts_with("/OUT:")) {
Some(s) => s[5..].to_string(),
None => {
let mut args = std::env::args();
loop {
if args.next().unwrap() == "-o" {
break;
}
}
args.next().unwrap()
}
};
std::fs::remove_file(&output).unwrap();
std::fs::write(&output, "").unwrap();
// Tell the test that we are ready to be interrupted.
let mut socket = std::net::TcpStream::connect("__ADDR__").unwrap();
// Wait for the test to kill us.
std::thread::sleep(std::time::Duration::new(60, 0));
}
"#
.replace("__ADDR__", &link_addr.to_string()),
)
.build();
linker.cargo("build").run();
// Create a wrapper around rustc that will tell us when rustc is finished.
let rustc = project()
.at("rustc-waiter")
.file("Cargo.toml", &basic_manifest("rustc-waiter", "1.0.0"))
.file(
"src/main.rs",
&r#"
fn main() {
let mut conn = None;
// Check for a normal build (not -vV or --print).
if std::env::args().any(|arg| arg == "t1") {
// Tell the test that rustc has started.
conn = Some(std::net::TcpStream::connect("__ADDR__").unwrap());
}
let status = std::process::Command::new("rustc")
.args(std::env::args().skip(1))
.status()
.expect("rustc to run");
std::process::exit(status.code().unwrap_or(1));
}
"#
.replace("__ADDR__", &rustc_addr.to_string()),
)
.build();
rustc.cargo("build").run();
// Build it once so that the fingerprint gets saved to disk.
let p = project()
.file("src/lib.rs", "")
.file("tests/t1.rs", "")
.build();
p.cargo("test --test t1 --no-run").run();
// Make a change, start a build, then interrupt it.
p.change_file("src/lib.rs", "// modified");
let linker_env = format!(
"CARGO_TARGET_{}_LINKER",
rustc_host().to_uppercase().replace('-', "_")
);
// NOTE: This assumes that the paths to the linker or rustc are not in the
// fingerprint. But maybe they should be?
let mut cmd = p
.cargo("test --test t1 --no-run")
.env(&linker_env, linker.bin("linker"))
.env("RUSTC", rustc.bin("rustc-waiter"))
.build_command();
let mut child = cmd
.stdout(Stdio::null())
.stderr(Stdio::null())
.env("__CARGO_TEST_SETSID_PLEASE_DONT_USE_ELSEWHERE", "1")
.spawn()
.unwrap();
// Wait for rustc to start.
let mut rustc_conn = rustc_listener.accept().unwrap().0;
// Wait for linking to start.
drop(link_listener.accept().unwrap());
// Interrupt the child.
death::ctrl_c(&mut child);
assert!(!child.wait().unwrap().success());
// Wait for rustc to exit. If we don't wait, then the command below could
// start while rustc is still being torn down.
let mut buf = [0];
drop(rustc_conn.read_exact(&mut buf));
// Build again, shouldn't be fresh.
p.cargo("test --test t1")
.with_stderr(
"\
[COMPILING] foo [..]
[FINISHED] [..]
[RUNNING] target/debug/deps/t1[..]
",
)
.run();
}
#[cargo_test]
#[cfg_attr(
not(all(target_arch = "x86_64", target_os = "windows", target_env = "msvc")),
ignore
)]
fn lld_is_fresh() {
// Check for bug when using lld linker that it remains fresh with dylib.
let p = project()
.file(
".cargo/config",
r#"
[target.x86_64-pc-windows-msvc]
linker = "rust-lld"
rustflags = ["-C", "link-arg=-fuse-ld=lld"]
"#,
)
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[lib]
crate-type = ["dylib"]
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build -v")
.with_stderr("[FRESH] foo [..]\n[FINISHED] [..]")
.run();
}
#[cargo_test]
fn env_in_code_causes_rebuild() {
// Only nightly 1.46 has support in dep-info files for this
if !cargo_test_support::is_nightly() {
return;
}
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
"#,
)
.file(
"src/main.rs",
r#"
fn main() {
println!("{:?}", option_env!("FOO"));
println!("{:?}", option_env!("FOO\nBAR"));
}
"#,
)
.build();
p.cargo("build").env_remove("FOO").run();
p.cargo("build")
.env_remove("FOO")
.with_stderr("[FINISHED] [..]")
.run();
p.cargo("build")
.env("FOO", "bar")
.with_stderr("[COMPILING][..]\n[FINISHED][..]")
.run();
p.cargo("build")
.env("FOO", "bar")
.with_stderr("[FINISHED][..]")
.run();
p.cargo("build")
.env("FOO", "baz")
.with_stderr("[COMPILING][..]\n[FINISHED][..]")
.run();
p.cargo("build")
.env("FOO", "baz")
.with_stderr("[FINISHED][..]")
.run();
p.cargo("build")
.env_remove("FOO")
.with_stderr("[COMPILING][..]\n[FINISHED][..]")
.run();
p.cargo("build")
.env_remove("FOO")
.with_stderr("[FINISHED][..]")
.run();
let interesting = " #!$\nabc\r\\\t\u{8}\r\n";
p.cargo("build").env("FOO", interesting).run();
p.cargo("build")
.env("FOO", interesting)
.with_stderr("[FINISHED][..]")
.run();
p.cargo("build").env("FOO\nBAR", interesting).run();
p.cargo("build")
.env("FOO\nBAR", interesting)
.with_stderr("[FINISHED][..]")
.run();
}
#[cargo_test]
fn env_build_script_no_rebuild() {
// Only nightly 1.46 has support in dep-info files for this
if !cargo_test_support::is_nightly() {
return;
}
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
"#,
)
.file(
"build.rs",
r#"
fn main() {
println!("cargo:rustc-env=FOO=bar");
}
"#,
)
.file(
"src/main.rs",
r#"
fn main() {
println!("{:?}", env!("FOO"));
}
"#,
)
.build();
p.cargo("build").run();
p.cargo("build").with_stderr("[FINISHED] [..]").run();
}
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