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cargo/tests/testsuite/freshness.rs
Ed Page 1876326b6b feat(resolve): Tell the user the style of resovle done 
This is to help with #9930

Example changes:
```diff
-[LOCKING] 4 packages
+[LOCKING] 4 packages to latest version
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest Rust 1.60.0 compatible versions
-[LOCKING] 2 packages
+[LOCKING] 2 packages to earliest versions
```

Benefits
- The package count is of "added" packages and this makes that more
  logically clear
- This gives users transparency into what is happening, especially with
  - what rust-version is use
  - the transition to this feature in the new edition
  - whether the planned config was applied or not (as I don't want it to
    require an MSRV bump)
- Will make it easier in tests to show what changed
- Provides more motiviation to show this message in `cargo update` and
  `cargo install` (that will be explored in a follow up PR)

This does come at the cost of more verbose output but hopefully not too
verbose.  This is why I left off other factors, like avoid-dev-deps.
2024-04-13 20:39:59 -05:00

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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_lib_manifest, basic_manifest, is_coarse_mtime, project, rustc_host, rustc_host_env,
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` profile [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build").with_stderr("[FINISHED] [..]").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 -v")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([CWD]): the file `src/a.rs` has changed ([..])
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc --crate-name foo [..]
[FINISHED] `dev` profile [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` profile [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 -v")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([CWD]): the file `src/b.rs` has changed ([..])
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc --crate-name foo [..]
[FINISHED] `dev` profile [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"
edition = "2015"
[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"
edition = "2015"
[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(
"\
[LOCKING] 3 packages to latest compatible versions
[COMPILING] b [..]
[COMPILING] a [..]
[COMPILING] foo [..]
[FINISHED] `dev` profile [..]
",
)
.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(
"\
[DIRTY] b v0.0.1 ([..]): the file `b/src/lib.rs` has changed ([..])
[COMPILING] b [..]
[RUNNING] `rustc --crate-name b [..]
[FINISHED] `dev` profile [..]
",
)
.run();
p.change_file(
"src/lib.rs",
"extern crate a; extern crate b; pub fn toplevel() {}",
);
p.cargo("build -v")
.with_stderr(
"\
[FRESH] b [..]
[DIRTY] a [..]: the dependency b was rebuilt ([..])
[COMPILING] a [..]
[RUNNING] `rustc --crate-name a [..]
[DIRTY] foo [..]: the dependency b was rebuilt ([..])
[COMPILING] foo [..]
[RUNNING] `rustc --crate-name foo [..]
[FINISHED] `dev` profile [..]
",
)
.run();
}
#[cargo_test]
fn changing_lib_features_caches_targets() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
authors = []
version = "0.0.1"
edition = "2015"
[features]
foo = []
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build --features foo")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
/* Targets should be cached from the first build */
p.cargo("build")
.with_stderr("[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]")
.run();
p.cargo("build").with_stderr("[FINISHED] [..]").run();
p.cargo("build --features foo")
.with_stderr("[FINISHED] `dev` profile [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"
edition = "2015"
[profile.dev]
panic = "abort"
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("test")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] `test` profile [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` profile [unoptimized + debuginfo] target(s) in [..]")
.run();
p.cargo("test foo")
.with_stderr(
"\
[FINISHED] `test` profile [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.toml",
r#"
[build]
target-dir = "./target"
"#,
)
.file(
"dep_crate/Cargo.toml",
r#"
[package]
name = "dep_crate"
version = "0.0.1"
edition = "2015"
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"
edition = "2015"
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"
edition = "2015"
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(
"\
[LOCKING] 2 packages to latest compatible versions
[..]Compiling dep_crate v0.0.1 ([..])
[..]Compiling a v0.0.1 ([..])
[FINISHED] `dev` profile [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` profile [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(
"\
[LOCKING] 2 packages to latest compatible versions
[..]Compiling dep_crate v0.0.1 ([..])
[..]Compiling b v0.0.1 ([..])
[FINISHED] `dev` profile [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` profile [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` profile [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` profile [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"
edition = "2015"
[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` profile [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` profile [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 -v");
// MSVC does not include hash in binary filename, so it gets recompiled.
if cfg!(target_env = "msvc") {
e.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the list of features changed
[COMPILING] foo[..]
[RUNNING] `rustc [..]
[FINISHED] `dev`[..]",
);
} else {
e.with_stderr("[FRESH] foo v0.0.1 ([..])\n[FINISHED] `dev`[..]");
}
e.run();
p.rename_run("foo", "off2").with_stdout("feature off").run();
let mut e = p.cargo("build --features foo -v");
if cfg!(target_env = "msvc") {
e.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the list of features changed
[COMPILING] foo[..]
[RUNNING] `rustc [..]
[FINISHED] `dev`[..]",
);
} else {
e.with_stderr(
"\
[FRESH] foo v0.0.1 ([..])
[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"
edition = "2015"
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"
edition = "2015"
authors = []
[target.foo.dependencies]
c = { path = "../c" }
"#,
)
.file("a/src/lib.rs", "")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.0.1"
edition = "2015"
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` profile [unoptimized + debuginfo] target(s) in [..]
[EXECUTABLE] unittests src/lib.rs (target/debug/deps/foo-[..][EXE])
[EXECUTABLE] tests/foo.rs (target/debug/deps/foo-[..][EXE])
",
)
.run();
}
#[cargo_test]
fn rerun_if_changed_in_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
edition = "2015"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file("src/lib.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.0.1"
edition = "2015"
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_stderr("[FINISHED] [..]").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"
edition = "2015"
authors = []
[dependencies]
b = { path = "../b" }
"#,
)
.file("a1/src/lib.rs", "")
.file(
"a2/Cargo.toml",
r#"
[package]
name = "a2"
version = "0.0.1"
edition = "2015"
authors = []
[dependencies]
b = { path = "../b" }
"#,
)
.file("a2/src/lib.rs", "")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.0.1"
edition = "2015"
authors = []
[dependencies]
c = { path = "../c" }
"#,
)
.file("b/src/lib.rs", "")
.file(
"c/Cargo.toml",
r#"
[package]
name = "c"
version = "0.0.1"
edition = "2015"
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.toml",
r#"
[build]
target-dir = "./target"
"#,
)
.build();
p.cargo("build")
.cwd("a1")
.with_stderr(&format!(
"\
[LOCKING] 4 packages to latest compatible versions
[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` profile [unoptimized + debuginfo] target(s) in [..]
",
dir = p.url().to_file_path().unwrap().to_str().unwrap()
))
.run();
p.cargo("build")
.cwd("a2")
.with_stderr(
"\
[LOCKING] 4 packages to latest compatible versions
[COMPILING] a2 v0.0.1 ([CWD])
[FINISHED] `dev` profile [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"
edition = "2015"
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"
edition = "2015"
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"
edition = "2015"
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` profile [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"
edition = "2015"
authors = []
"#,
);
p.cargo("run -v")
.with_stdout("new desc")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([CWD]): the metadata changed
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc [..]
[FINISHED] `dev` profile [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"
edition = "2015"
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` profile [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"
edition = "2015"
[dependencies]
bar = { path = "bar" }
baz = { path = "baz" }
registry1 = "*"
"#,
)
.file("src/lib.rs", "")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
edition = "2015"
authors = []
[dev-dependencies]
registry2 = "*"
"#,
)
.file("bar/src/lib.rs", "")
.file(
"baz/Cargo.toml",
r#"
[package]
name = "baz"
version = "0.1.1"
edition = "2015"
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"
edition = "2015"
[dependencies]
bar = { path = "bar" }
"#,
)
.file("src/lib.rs", "")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.1.1"
edition = "2015"
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"
edition = "2015"
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"
edition = "2015"
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"
edition = "2015"
[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"
edition = "2015"
[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"
edition = "2015"
[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"
edition = "2015"
[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] [..]
[EXECUTABLE] `[..]/target/debug/deps/baz-[..][EXE]`
",
)
.run();
}
#[cargo_test]
fn reuse_shared_build_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
edition = "2015"
[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"
edition = "2015"
[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
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
)
.run();
p.cargo("build -v")
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the rustflags changed
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..]
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
)
.run();
p.cargo("build -v")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the rustflags changed
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..]
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
)
.run();
p.cargo("build -v")
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the rustflags changed
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..]
[FINISHED] `dev` profile [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"
edition = "2015"
[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(&["mtime-on-use"])
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr(
"\
[LOCKING] 2 packages to latest compatible versions
[COMPILING] bar v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] `dev` profile [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(&["mtime-on-use"])
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr("[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]")
.run();
// This should not recompile!
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo(&["mtime-on-use"])
.env("RUSTFLAGS", "-C linker=cc")
.with_stderr("[FINISHED] `dev` profile [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 cleaned = 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
cleaned = true;
} else {
}
}
assert!(
cleaned,
"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"
edition = "2015"
[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(&["mtime-on-use"])
.run();
p.cargo("build -Z mtime-on-use --features a")
.masquerade_as_nightly_cargo(&["mtime-on-use"])
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] `dev` profile [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(&["mtime-on-use"])
.with_stderr("[FINISHED] `dev` profile [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(&["mtime-on-use"])
.with_stderr("[FINISHED] `dev` profile [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(&["mtime-on-use"])
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] `dev` profile [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"
edition = "2015"
[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(
"\
[LOCKING] 2 packages to latest compatible versions
[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 --edition=2015 src/lib.rs [..]--test[..]
[FINISHED] [..]
[EXECUTABLE] `[..]/target/debug/deps/foo-[..][EXE]`
",
)
.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"
edition = "2015"
[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"
edition = "2015"
[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(
"\
[LOCKING] 3 packages to latest compatible versions
[COMPILING] bar [..]
[RUNNING] `rustc --crate-name bar --edition=2015 bar/src/lib.rs [..]--crate-type lib --emit=[..]link[..]
[RUNNING] `rustc --crate-name bar --edition=2015 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 --edition=2015 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"
edition = "2015"
[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", "// modified");
if is_coarse_mtime() {
sleep_ms(1000);
}
p.cargo("build -v")
.with_stderr(
"\
[DIRTY] registry1 v0.1.0 ([..]): the file `reg1new/src/lib.rs` has changed ([..])
[COMPILING] registry1 v0.1.0 ([..])
[RUNNING] `rustc [..]
[DIRTY] registry2 v0.1.0: the dependency registry1 was rebuilt
[COMPILING] registry2 v0.1.0
[RUNNING] `rustc [..]
[DIRTY] foo v0.0.1 ([..]): the dependency registry2 was rebuilt
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..]
[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"
edition = "2015"
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"
edition = "2015"
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(
"\
[LOCKING] 2 packages to latest compatible versions
[COMPILING] proc_macro_dep v0.1.0 ([..]/proc_macro_dep)
[COMPILING] root v0.1.0 ([..]/root)
[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.cargo("build -v")
.with_stderr(
"\
[FRESH] proc_macro_dep v0.1.0 ([..]/proc_macro_dep)
[DIRTY] root v0.1.0 ([..]/root): the file `root/src/lib.rs` has changed ([..])
[COMPILING] root v0.1.0 ([..]/root)
[RUNNING] `rustc [..]
[FINISHED] `dev` profile [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"
edition = "2015"
[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 [..]
[DIRTY] foo [..]: the precalculated components changed
[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"
edition = "2015"
"#,
)
.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#"
[package]
name = "foo"
version = "0.5.0"
edition = "2015"
authors = []
[dependencies]
a = { path = 'a' }
"#,
)
.file("src/lib.rs", "extern crate a; pub fn foo() { a::foo(); }")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.5.0"
edition = "2015"
authors = []
[dependencies]
b = { path = 'b' }
"#,
)
.file("a/src/lib.rs", "extern crate b; pub fn foo() { b::foo() }")
.file(
"a/b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.5.0"
edition = "2015"
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#"
[package]
name = "foo"
version = "0.5.0"
edition = "2015"
authors = []
[dependencies]
a = { path = "a" }
"#,
)
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.5.0"
edition = "2015"
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(
"\
[DIRTY] foo [..]: the env variable FOO changed
[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(
"\
[DIRTY] foo [..]: the env variable BAR changed
[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(
"\
[DIRTY] foo [..]: the env variable FOO changed
[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_env());
// 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 -v")
.with_stderr(
"\
[DIRTY] foo v0.0.1 ([..]): the config settings changed
[COMPILING] foo [..]
[RUNNING] `rustc --crate-name foo [..]
[RUNNING] `rustc --crate-name t1 [..]
[FINISHED] [..]
[RUNNING] `[..]target/debug/deps/t1-[..][EXE]`
",
)
.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.toml",
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"
edition = "2015"
[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() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
edition = "2015"
"#,
)
.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 -v")
.env("FOO", "bar")
.with_stderr(
"\
[DIRTY] foo [..]: the environment variable FOO changed
[COMPILING][..]
[RUNNING] `rustc [..]
[FINISHED][..]",
)
.run();
p.cargo("build")
.env("FOO", "bar")
.with_stderr("[FINISHED][..]")
.run();
p.cargo("build -v")
.env("FOO", "baz")
.with_stderr(
"\
[DIRTY] foo [..]: the environment variable FOO changed
[COMPILING][..]
[RUNNING] `rustc [..]
[FINISHED][..]",
)
.run();
p.cargo("build")
.env("FOO", "baz")
.with_stderr("[FINISHED][..]")
.run();
p.cargo("build -v")
.env_remove("FOO")
.with_stderr(
"\
[DIRTY] foo [..]: the environment variable FOO changed
[COMPILING][..]
[RUNNING] `rustc [..]
[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() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
edition = "2015"
"#,
)
.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();
}
#[cargo_test]
fn cargo_env_changes() {
// Checks that changes to the env var CARGO in the dep-info file triggers
// a rebuild.
let p = project()
.file("Cargo.toml", &basic_manifest("foo", "1.0.0"))
.file(
"src/main.rs",
r#"
fn main() {
println!("{:?}", env!("CARGO"));
}
"#,
)
.build();
let cargo_exe = cargo_test_support::cargo_exe();
let other_cargo_path = p.root().join(cargo_exe.file_name().unwrap());
std::fs::hard_link(&cargo_exe, &other_cargo_path).unwrap();
let other_cargo = || {
let mut pb = cargo_test_support::process(&other_cargo_path);
pb.cwd(p.root());
cargo_test_support::execs().with_process_builder(pb)
};
p.cargo("check").run();
other_cargo()
.arg("check")
.arg("-v")
.with_stderr(
"\
[DIRTY] foo v1.0.0 ([..]): the environment variable CARGO changed
[CHECKING] foo [..]
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
// And just to confirm that without using env! it doesn't rebuild.
p.change_file("src/main.rs", "fn main() {}");
p.cargo("check")
.with_stderr(
"\
[CHECKING] foo [..]
[FINISHED] [..]
",
)
.run();
other_cargo()
.arg("check")
.arg("-v")
.with_stderr(
"\
[FRESH] foo [..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test]
fn changing_linker() {
// Changing linker should rebuild.
let p = project().file("src/main.rs", "fn main() {}").build();
p.cargo("build").run();
let linker_env = format!("CARGO_TARGET_{}_LINKER", rustc_host_env());
p.cargo("build --verbose")
.env(&linker_env, "nonexistent-linker")
.with_status(101)
.with_stderr_contains(
"\
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..] -C linker=nonexistent-linker [..]`
[ERROR] [..]linker[..]
",
)
.run();
}
#[cargo_test]
fn verify_source_before_recompile() {
Package::new("bar", "0.1.0")
.file("src/lib.rs", "")
.publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
edition = "2015"
[dependencies]
bar = "0.1.0"
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("vendor --respect-source-config").run();
p.change_file(
".cargo/config.toml",
r#"
[source.crates-io]
replace-with = 'vendor'
[source.vendor]
directory = 'vendor'
"#,
);
// Sanity check: vendoring works correctly.
p.cargo("check --verbose")
.with_stderr_contains(
"[RUNNING] `rustc --crate-name bar --edition=2015 [CWD]/vendor/bar/src/lib.rs[..]",
)
.run();
// Now modify vendored crate.
p.change_file(
"vendor/bar/src/lib.rs",
r#"compile_error!("You shall not pass!");"#,
);
// Should ignore modified sources without any recompile.
p.cargo("check --verbose")
.with_stderr(
"\
[FRESH] bar v0.1.0
[FRESH] foo v0.1.0 ([CWD])
[FINISHED] `dev` profile [..]
",
)
.run();
// Add a `RUSTFLAGS` to trigger a recompile.
//
// Cargo should refuse to build because of checksum verification failure.
// Cargo shouldn't recompile dependency `bar`.
p.cargo("check --verbose")
.env("RUSTFLAGS", "-W warnings")
.with_status(101)
.with_stderr(
"\
error: the listed checksum of `[CWD]/vendor/bar/src/lib.rs` has changed:
expected: [..]
actual: [..]
directory sources are not [..]
",
)
.run();
}
#[cargo_test]
fn skip_mtime_check_in_selected_cargo_home_subdirs() {
let p = project()
.at("cargo_home/registry/foo")
.file("Cargo.toml", &basic_lib_manifest("foo"))
.file("src/lib.rs", "")
.build();
let project_root = p.root();
let cargo_home = project_root.parent().unwrap().parent().unwrap();
p.cargo("check -v")
.env("CARGO_HOME", &cargo_home)
.with_stderr(
"\
[CHECKING] foo v0.5.0 ([CWD])
[RUNNING] `rustc --crate-name foo --edition=2015 src/lib.rs [..]
[FINISHED] `dev` profile [..]",
)
.run();
p.change_file("src/lib.rs", "illegal syntax");
p.cargo("check -v")
.env("CARGO_HOME", &cargo_home)
.with_stderr(
"\
[FRESH] foo v0.5.0 ([CWD])
[FINISHED] `dev` profile [..]",
)
.run();
}
#[cargo_test]
fn use_mtime_cache_in_cargo_home() {
let p = project()
.at("cargo_home/foo")
.file("Cargo.toml", &basic_lib_manifest("foo"))
.file("src/lib.rs", "")
.build();
let project_root = p.root();
let cargo_home = project_root.parent().unwrap();
p.cargo("check -v")
.env("CARGO_HOME", &cargo_home)
.with_stderr(
"\
[CHECKING] foo v0.5.0 ([CWD])
[RUNNING] `rustc --crate-name foo --edition=2015 src/lib.rs [..]
[FINISHED] `dev` profile [..]",
)
.run();
p.change_file("src/lib.rs", "illegal syntax");
p.cargo("check -v")
.env("CARGO_HOME", &cargo_home)
.with_stderr(
"\
[DIRTY] foo v0.5.0 ([CWD]): [..]
[CHECKING] foo v0.5.0 ([CWD])
[RUNNING] `rustc --crate-name foo --edition=2015 src/lib.rs [..]",
)
.run_expect_error();
}
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