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cargo/tests/testsuite/freshness.rs
bors 907c0febe7 Auto merge of #6573 - ehuss:mtime-on-use-feature, r=dwijnand 
Put mtime-on-use behind a feature flag.

This places #6477 behind the `-Z mtime-on-use` feature flag.

The change to update the mtime each time a crate is used has caused a performance regression on the rust playground (rust-lang/rust#57774). It is using about 241 pre-built crates in a Docker container. Due to the copy-on-write nature of Docker, it can take a significant amount of time to update the timestamps (over 10 seconds on slower systems).

cc @Mark-Simulacrum
2019-01-20 22:31:07 +00:00

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use std::fs::{self, File, OpenOptions};
use std::io::prelude::*;
use std::net::TcpListener;
use std::path::PathBuf;
use std::thread;
use std::time::SystemTime;
use crate::support::paths::CargoPathExt;
use crate::support::registry::Package;
use crate::support::sleep_ms;
use crate::support::{basic_manifest, is_coarse_mtime, project};
#[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();
File::create(&p.root().join("src/a.rs"))
.unwrap()
.write_all(b"#[allow(unused)]fn main() {}")
.unwrap();
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();
}
#[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");
let bin = p.root().join("src/b.rs");
File::create(&lib)
.unwrap()
.write_all(b"invalid rust code")
.unwrap();
File::create(&bin)
.unwrap()
.write_all(b"#[allow(unused)]fn foo() {}")
.unwrap();
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());
}
#[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").run();
File::create(&p.root().join("b/src/lib.rs"))
.unwrap()
.write_all(br#"pub fn b() {}"#)
.unwrap();
p.cargo("build -pb").run();
File::create(&p.root().join("src/lib.rs"))
.unwrap()
.write_all(br#"extern crate a; extern crate b; pub fn toplevel() {}"#)
.unwrap();
p.cargo("build").run();
}
#[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();
}
#[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] dev [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] dev [unoptimized + debuginfo] target(s) in [..]
[RUNNING] target[..]debug[..]deps[..]foo-[..][EXE]
[DOCTEST] foo
",
)
.run();
}
#[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(p.root().join("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(p.root().join("a")).run();
p.cargo("run")
.cwd(p.root().join("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(p.root().join("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(p.root().join("b")).run();
p.cargo("run")
.cwd(p.root().join("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(p.root().join("a")).run();
p.cargo("run")
.cwd(p.root().join("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(p.root().join("b")).run();
p.cargo("run")
.cwd(p.root().join("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();
}
#[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 */
p.cargo("build")
.with_stderr(
"\
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.rename_run("foo", "off2").with_stdout("feature off").run();
p.cargo("build --features foo")
.with_stderr(
"\
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.rename_run("foo", "on2").with_stdout("feature on").run();
}
#[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);
File::create(&p.root().join("src/lib.rs")).unwrap();
p.cargo("build -v").run();
p.cargo("test -v")
.with_status(101)
.with_stderr_contains("[..]cannot find function `foo`[..]")
.run();
}
#[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] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[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();
}
#[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(p.root().join("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(p.root().join("a2"))
.with_stderr(
"\
[COMPILING] a2 v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[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();
}
#[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("RUST_LOG", "")
.with_stdout("")
.with_stderr(
"\
[COMPILING] a v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] [..]
",
)
.run();
}
#[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();
File::create(&p.root().join("Cargo.toml"))
.unwrap()
.write_all(
br#"
[package]
name = "foo"
description = "new desc"
version = "0.0.1"
authors = []
"#,
)
.unwrap();
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();
}
#[test]
fn no_rebuild_when_rename_dir() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[dependencies]
foo = { path = "foo" }
"#,
)
.file("src/lib.rs", "")
.file("foo/Cargo.toml", &basic_manifest("foo", "0.0.1"))
.file("foo/src/lib.rs", "")
.build();
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();
}
#[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();
}
#[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();
}
#[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();
}
#[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();
}
#[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();
}
#[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 --all").run();
// This should not recompile!
p.cargo("build -p foo -v")
.with_stderr(
"\
[FRESH] shared [..]
[FRESH] foo [..]
[FINISHED] [..]
",
)
.run();
}
#[test]
fn changing_rustflags_is_cached() {
let p = project().file("src/lib.rs", "").build();
p.cargo("build").run();
p.cargo("build")
.env("RUSTFLAGS", "-C target-cpu=native")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
// This should not recompile!
p.cargo("build")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
p.cargo("build")
.env("RUSTFLAGS", "-C target-cpu=native")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
}
fn simple_deps_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 files in
// target/profile/deps each time it uses the file.
// So a cleaner can remove files older then a time stamp without
// effecting any builds that happened since that time stamp.
let mut cleand = false;
dir.push("deps");
for dep in fs::read_dir(&dir).unwrap() {
let dep = dep.unwrap();
if filetime::FileTime::from_last_modification_time(&dep.metadata().unwrap()) <= timestamp {
fs::remove_file(dep.path()).unwrap();
println!("remove: {:?}", dep.path());
cleand = true;
}
}
assert!(
cleand,
"called simple_deps_cleaner, but there was nothing to remove"
);
}
#[test]
fn simple_deps_cleaner_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()
.run();
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.with_stderr(
"\
[COMPILING] bar v0.0.1 ([..])
[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")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
simple_deps_cleaner(p.target_debug_dir(), timestamp);
// This should not recompile!
p.cargo("build -Z mtime-on-use")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.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] bar v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[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();
if fs::read_dir(fing.path()).unwrap().all(|f| {
filetime::FileTime::from_last_modification_time(&f.unwrap().metadata().unwrap())
<= timestamp
}) {
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"
);
}
#[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" }
"#,
)
.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")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.with_stderr(
"\
[COMPILING] bar v0.0.1 ([..])
[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")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.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")
.masquerade_as_nightly_cargo()
.env("RUSTFLAGS", "-C target-cpu=native")
.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] bar v0.0.1 ([..])
[COMPILING] foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]",
)
.run();
}
#[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();
}
#[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=dep-info,link -C debuginfo=2 [..]
[RUNNING] `rustc --crate-name bar bar/src/lib.rs [..]--crate-type lib --emit=dep-info,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();
}
#[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);
}
File::create(&p.root().join("reg1new/src/lib.rs")).unwrap();
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();
}
#[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#"
[project]
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#"
[project]
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();
}
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