cargo/tests/testsuite/features.rs

2080 lines
54 KiB
Rust

//! Tests for `[features]` table.
use cargo_test_support::paths::CargoPathExt;
use cargo_test_support::registry::{Dependency, Package};
use cargo_test_support::{basic_manifest, project};
#[cargo_test]
fn invalid1() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
bar = ["baz"]
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build")
.with_status(101)
.with_stderr(
"\
[ERROR] failed to parse manifest at `[..]`
Caused by:
feature `bar` includes `baz` which is neither a dependency nor another feature
",
)
.run();
}
#[cargo_test]
fn same_name() {
// Feature with the same name as a dependency.
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
bar = ["baz"]
baz = []
[dependencies.bar]
path = "bar"
"#,
)
.file("src/main.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "1.0.0"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("tree -f")
.arg("{p} [{f}]")
.with_stderr("")
.with_stdout(
"\
foo v0.0.1 ([..]) []
└── bar v1.0.0 ([..]) []
",
)
.run();
p.cargo("tree --features bar -f")
.arg("{p} [{f}]")
.with_stderr("")
.with_stdout(
"\
foo v0.0.1 ([..]) [bar,baz]
└── bar v1.0.0 ([..]) []
",
)
.run();
}
#[cargo_test]
fn invalid3() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
bar = ["baz"]
[dependencies.baz]
path = "foo"
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build")
.with_status(101)
.with_stderr(
"\
[ERROR] failed to parse manifest at `[..]`
Caused by:
feature `bar` includes `baz`, but `baz` is not an optional dependency
A non-optional dependency of the same name is defined; consider adding `optional = true` to its definition.
",
)
.run();
}
#[cargo_test]
fn invalid4() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
features = ["bar"]
"#,
)
.file("src/main.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("build")
.with_status(101)
.with_stderr(
"\
error: failed to select a version for `bar`.
... required by package `foo v0.0.1 ([..])`
versions that meet the requirements `*` are: 0.0.1
the package `foo` depends on `bar`, with features: `bar` but `bar` does not have these features.
failed to select a version for `bar` which could resolve this conflict",
)
.run();
p.change_file("Cargo.toml", &basic_manifest("foo", "0.0.1"));
p.cargo("build --features test")
.with_status(101)
.with_stderr("error: Package `foo v0.0.1 ([..])` does not have the feature `test`")
.run();
}
#[cargo_test]
fn invalid5() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dev-dependencies.bar]
path = "bar"
optional = true
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build")
.with_status(101)
.with_stderr(
"\
[ERROR] failed to parse manifest at `[..]`
Caused by:
dev-dependencies are not allowed to be optional: `bar`
",
)
.run();
}
#[cargo_test]
fn invalid6() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = ["bar/baz"]
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build --features foo")
.with_status(101)
.with_stderr(
"\
[ERROR] failed to parse manifest at `[..]`
Caused by:
feature `foo` includes `bar/baz`, but `bar` is not a dependency
",
)
.run();
}
#[cargo_test]
fn invalid7() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = ["bar/baz"]
bar = []
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build --features foo")
.with_status(101)
.with_stderr(
"\
[ERROR] failed to parse manifest at `[..]`
Caused by:
feature `foo` includes `bar/baz`, but `bar` is not a dependency
",
)
.run();
}
#[cargo_test]
fn invalid8() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
features = ["foo/bar"]
"#,
)
.file("src/main.rs", "")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("build --features foo")
.with_status(101)
.with_stderr(
"\
error: failed to parse manifest at `[CWD]/Cargo.toml`
Caused by:
feature `foo/bar` in dependency `bar` is not allowed to contain slashes
If you want to enable features [..]
",
)
.run();
}
#[cargo_test]
fn invalid9() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
"#,
)
.file("src/main.rs", "fn main() {}")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "")
.build();
p.cargo("build --features bar")
.with_stderr(
"\
error: Package `foo v0.0.1 ([..])` does not have feature `bar`. It has a required dependency with that name, but only optional dependencies can be used as features.
",
).with_status(101).run();
}
#[cargo_test]
fn invalid10() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
features = ["baz"]
"#,
)
.file("src/main.rs", "fn main() {}")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[dependencies.baz]
path = "baz"
"#,
)
.file("bar/src/lib.rs", "")
.file("bar/baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("bar/baz/src/lib.rs", "")
.build();
p.cargo("build").with_stderr("\
error: failed to select a version for `bar`.
... required by package `foo v0.0.1 ([..])`
versions that meet the requirements `*` are: 0.0.1
the package `foo` depends on `bar`, with features: `baz` but `bar` does not have these features.
It has a required dependency with that name, but only optional dependencies can be used as features.
failed to select a version for `bar` which could resolve this conflict
").with_status(101)
.run();
}
#[cargo_test]
fn no_transitive_dep_feature_requirement() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.derived]
path = "derived"
[features]
default = ["derived/bar/qux"]
"#,
)
.file(
"src/main.rs",
r#"
extern crate derived;
fn main() { derived::test(); }
"#,
)
.file(
"derived/Cargo.toml",
r#"
[package]
name = "derived"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "../bar"
"#,
)
.file("derived/src/lib.rs", "extern crate bar; pub use bar::test;")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[features]
qux = []
"#,
)
.file(
"bar/src/lib.rs",
r#"
#[cfg(feature = "qux")]
pub fn test() { print!("test"); }
"#,
)
.build();
p.cargo("build")
.with_status(101)
.with_stderr(
"\
error: failed to parse manifest at `[CWD]/Cargo.toml`
Caused by:
multiple slashes in feature `derived/bar/qux` (included by feature `default`) are not allowed
",
)
.run();
}
#[cargo_test]
fn no_feature_doesnt_build() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(feature = "bar")]
extern crate bar;
#[cfg(feature = "bar")]
fn main() { bar::bar(); println!("bar") }
#[cfg(not(feature = "bar"))]
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.process(&p.bin("foo")).with_stdout("").run();
p.cargo("build --features bar")
.with_stderr(
"\
[COMPILING] bar v0.0.1 ([CWD]/bar)
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.process(&p.bin("foo")).with_stdout("bar\n").run();
}
#[cargo_test]
fn default_feature_pulled_in() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
default = ["bar"]
[dependencies.bar]
path = "bar"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(feature = "bar")]
extern crate bar;
#[cfg(feature = "bar")]
fn main() { bar::bar(); println!("bar") }
#[cfg(not(feature = "bar"))]
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] bar v0.0.1 ([CWD]/bar)
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.process(&p.bin("foo")).with_stdout("bar\n").run();
p.cargo("build --no-default-features")
.with_stderr(
"\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.process(&p.bin("foo")).with_stdout("").run();
}
#[cargo_test]
fn cyclic_feature() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
default = ["default"]
"#,
)
.file("src/main.rs", "")
.build();
p.cargo("build")
.with_status(101)
.with_stderr("[ERROR] cyclic feature dependency: feature `default` depends on itself")
.run();
}
#[cargo_test]
fn cyclic_feature2() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = ["bar"]
bar = ["foo"]
"#,
)
.file("src/main.rs", "fn main() {}")
.build();
p.cargo("build").with_stdout("").run();
}
#[cargo_test]
fn groups_on_groups_on_groups() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
default = ["f1"]
f1 = ["f2", "bar"]
f2 = ["f3", "f4"]
f3 = ["f5", "f6", "baz"]
f4 = ["f5", "f7"]
f5 = ["f6"]
f6 = ["f7"]
f7 = ["bar"]
[dependencies.bar]
path = "bar"
optional = true
[dependencies.baz]
path = "baz"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[allow(unused_extern_crates)]
extern crate bar;
#[allow(unused_extern_crates)]
extern crate baz;
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.file("baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("baz/src/lib.rs", "pub fn baz() {}")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn many_cli_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
optional = true
[dependencies.baz]
path = "baz"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[allow(unused_extern_crates)]
extern crate bar;
#[allow(unused_extern_crates)]
extern crate baz;
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.file("baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("baz/src/lib.rs", "pub fn baz() {}")
.build();
p.cargo("build --features")
.arg("bar baz")
.with_stderr(
"\
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn union_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.d1]
path = "d1"
features = ["f1"]
[dependencies.d2]
path = "d2"
features = ["f2"]
"#,
)
.file(
"src/main.rs",
r#"
#[allow(unused_extern_crates)]
extern crate d1;
extern crate d2;
fn main() {
d2::f1();
d2::f2();
}
"#,
)
.file(
"d1/Cargo.toml",
r#"
[package]
name = "d1"
version = "0.0.1"
authors = []
[features]
f1 = ["d2"]
[dependencies.d2]
path = "../d2"
features = ["f1"]
optional = true
"#,
)
.file("d1/src/lib.rs", "")
.file(
"d2/Cargo.toml",
r#"
[package]
name = "d2"
version = "0.0.1"
authors = []
[features]
f1 = []
f2 = []
"#,
)
.file(
"d2/src/lib.rs",
r#"
#[cfg(feature = "f1")] pub fn f1() {}
#[cfg(feature = "f2")] pub fn f2() {}
"#,
)
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] d2 v0.0.1 ([CWD]/d2)
[COMPILING] d1 v0.0.1 ([CWD]/d1)
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn many_features_no_rebuilds() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "b"
version = "0.1.0"
authors = []
[dependencies.a]
path = "a"
features = ["fall"]
"#,
)
.file("src/main.rs", "fn main() {}")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.1.0"
authors = []
[features]
ftest = []
ftest2 = []
fall = ["ftest", "ftest2"]
"#,
)
.file("a/src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] a v0.1.0 ([CWD]/a)
[COMPILING] b v0.1.0 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
p.root().move_into_the_past();
p.cargo("build -v")
.with_stderr(
"\
[FRESH] a v0.1.0 ([..]/a)
[FRESH] b v0.1.0 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
// Tests that all cmd lines work with `--features ""`
#[cargo_test]
fn empty_features() {
let p = project().file("src/main.rs", "fn main() {}").build();
p.cargo("build --features").arg("").run();
}
// Tests that all cmd lines work with `--features ""`
#[cargo_test]
fn transitive_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = ["bar/baz"]
[dependencies.bar]
path = "bar"
"#,
)
.file("src/main.rs", "extern crate bar; fn main() { bar::baz(); }")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[features]
baz = []
"#,
)
.file(
"bar/src/lib.rs",
r#"#[cfg(feature = "baz")] pub fn baz() {}"#,
)
.build();
p.cargo("build --features foo").run();
}
#[cargo_test]
fn everything_in_the_lockfile() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
f1 = ["d1/f1"]
f2 = ["d2"]
[dependencies.d1]
path = "d1"
[dependencies.d2]
path = "d2"
optional = true
[dependencies.d3]
path = "d3"
optional = true
"#,
)
.file("src/main.rs", "fn main() {}")
.file(
"d1/Cargo.toml",
r#"
[package]
name = "d1"
version = "0.0.1"
authors = []
[features]
f1 = []
"#,
)
.file("d1/src/lib.rs", "")
.file("d2/Cargo.toml", &basic_manifest("d2", "0.0.2"))
.file("d2/src/lib.rs", "")
.file(
"d3/Cargo.toml",
r#"
[package]
name = "d3"
version = "0.0.3"
authors = []
[features]
f3 = []
"#,
)
.file("d3/src/lib.rs", "")
.build();
p.cargo("fetch").run();
let lockfile = p.read_lockfile();
assert!(
lockfile.contains(r#"name = "d1""#),
"d1 not found\n{}",
lockfile
);
assert!(
lockfile.contains(r#"name = "d2""#),
"d2 not found\n{}",
lockfile
);
assert!(
lockfile.contains(r#"name = "d3""#),
"d3 not found\n{}",
lockfile
);
}
#[cargo_test]
fn no_rebuild_when_frobbing_default_feature() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
authors = []
[dependencies]
a = { path = "a" }
b = { path = "b" }
"#,
)
.file("src/lib.rs", "")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.1.0"
authors = []
[dependencies]
a = { path = "../a", features = ["f1"], default-features = false }
"#,
)
.file("b/src/lib.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.1.0"
authors = []
[features]
default = ["f1"]
f1 = []
"#,
)
.file("a/src/lib.rs", "")
.build();
p.cargo("build").run();
p.cargo("build").with_stdout("").run();
p.cargo("build").with_stdout("").run();
}
#[cargo_test]
fn unions_work_with_no_default_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
authors = []
[dependencies]
a = { path = "a" }
b = { path = "b" }
"#,
)
.file("src/lib.rs", "extern crate a; pub fn foo() { a::a(); }")
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.1.0"
authors = []
[dependencies]
a = { path = "../a", features = [], default-features = false }
"#,
)
.file("b/src/lib.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.1.0"
authors = []
[features]
default = ["f1"]
f1 = []
"#,
)
.file("a/src/lib.rs", r#"#[cfg(feature = "f1")] pub fn a() {}"#)
.build();
p.cargo("build").run();
p.cargo("build").with_stdout("").run();
p.cargo("build").with_stdout("").run();
}
#[cargo_test]
fn optional_and_dev_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "test"
version = "0.1.0"
authors = []
[dependencies]
foo = { path = "foo", optional = true }
[dev-dependencies]
foo = { path = "foo" }
"#,
)
.file("src/lib.rs", "")
.file("foo/Cargo.toml", &basic_manifest("foo", "0.1.0"))
.file("foo/src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr(
"\
[COMPILING] test v0.1.0 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn activating_feature_activates_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "test"
version = "0.1.0"
authors = []
[dependencies]
foo = { path = "foo", optional = true }
[features]
a = ["foo/a"]
"#,
)
.file(
"src/lib.rs",
"extern crate foo; pub fn bar() { foo::bar(); }",
)
.file(
"foo/Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
authors = []
[features]
a = []
"#,
)
.file("foo/src/lib.rs", r#"#[cfg(feature = "a")] pub fn bar() {}"#)
.build();
p.cargo("build --features a -v").run();
}
#[cargo_test]
fn dep_feature_in_cmd_line() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.derived]
path = "derived"
"#,
)
.file(
"src/main.rs",
r#"
extern crate derived;
fn main() { derived::test(); }
"#,
)
.file(
"derived/Cargo.toml",
r#"
[package]
name = "derived"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "../bar"
[features]
default = []
derived-feat = ["bar/some-feat"]
"#,
)
.file("derived/src/lib.rs", "extern crate bar; pub use bar::test;")
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
authors = []
[features]
some-feat = []
"#,
)
.file(
"bar/src/lib.rs",
r#"
#[cfg(feature = "some-feat")]
pub fn test() { print!("test"); }
"#,
)
.build();
// The foo project requires that feature "some-feat" in "bar" is enabled.
// Building without any features enabled should fail:
p.cargo("build")
.with_status(101)
.with_stderr_contains("[..]unresolved import `bar::test`")
.run();
// We should be able to enable the feature "derived-feat", which enables "some-feat",
// on the command line. The feature is enabled, thus building should be successful:
p.cargo("build --features derived/derived-feat").run();
// Trying to enable features of transitive dependencies is an error
p.cargo("build --features bar/some-feat")
.with_status(101)
.with_stderr("error: package `foo v0.0.1 ([..])` does not have a dependency named `bar`")
.run();
// Hierarchical feature specification should still be disallowed
p.cargo("build --features derived/bar/some-feat")
.with_status(101)
.with_stderr("[ERROR] multiple slashes in feature `derived/bar/some-feat` is not allowed")
.run();
}
#[cargo_test]
fn all_features_flag_enables_all_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = []
bar = []
[dependencies.baz]
path = "baz"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(feature = "foo")]
pub fn foo() {}
#[cfg(feature = "bar")]
pub fn bar() {
extern crate baz;
baz::baz();
}
fn main() {
foo();
bar();
}
"#,
)
.file("baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("baz/src/lib.rs", "pub fn baz() {}")
.build();
p.cargo("build --all-features").run();
}
#[cargo_test]
fn many_cli_features_comma_delimited() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
optional = true
[dependencies.baz]
path = "baz"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[allow(unused_extern_crates)]
extern crate bar;
#[allow(unused_extern_crates)]
extern crate baz;
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.file("baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("baz/src/lib.rs", "pub fn baz() {}")
.build();
p.cargo("build --features bar,baz")
.with_stderr(
"\
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn many_cli_features_comma_and_space_delimited() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
optional = true
[dependencies.baz]
path = "baz"
optional = true
[dependencies.bam]
path = "bam"
optional = true
[dependencies.bap]
path = "bap"
optional = true
"#,
)
.file(
"src/main.rs",
r#"
#[allow(unused_extern_crates)]
extern crate bar;
#[allow(unused_extern_crates)]
extern crate baz;
#[allow(unused_extern_crates)]
extern crate bam;
#[allow(unused_extern_crates)]
extern crate bap;
fn main() {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.file("baz/Cargo.toml", &basic_manifest("baz", "0.0.1"))
.file("baz/src/lib.rs", "pub fn baz() {}")
.file("bam/Cargo.toml", &basic_manifest("bam", "0.0.1"))
.file("bam/src/lib.rs", "pub fn bam() {}")
.file("bap/Cargo.toml", &basic_manifest("bap", "0.0.1"))
.file("bap/src/lib.rs", "pub fn bap() {}")
.build();
p.cargo("build --features")
.arg("bar,baz bam bap")
.with_stderr(
"\
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] ba[..] v0.0.1 ([CWD]/ba[..])
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
}
#[cargo_test]
fn only_dep_is_optional() {
Package::new("bar", "0.1.0").publish();
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
foo = ['bar']
[dependencies]
bar = { version = "0.1", optional = true }
[dev-dependencies]
bar = "0.1"
"#,
)
.file("src/main.rs", "fn main() {}")
.build();
p.cargo("build").run();
}
#[cargo_test]
fn all_features_all_crates() {
Package::new("bar", "0.1.0").publish();
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[workspace]
members = ['bar']
"#,
)
.file("src/main.rs", "fn main() {}")
.file(
"bar/Cargo.toml",
r#"
[project]
name = "bar"
version = "0.0.1"
authors = []
[features]
foo = []
"#,
)
.file("bar/src/main.rs", "#[cfg(feature = \"foo\")] fn main() {}")
.build();
p.cargo("build --all-features --workspace").run();
}
#[cargo_test]
fn feature_off_dylib() {
let p = project()
.file(
"Cargo.toml",
r#"
[workspace]
members = ["bar"]
[package]
name = "foo"
version = "0.0.1"
[lib]
crate-type = ["dylib"]
[features]
f1 = []
"#,
)
.file(
"src/lib.rs",
r#"
pub fn hello() -> &'static str {
if cfg!(feature = "f1") {
"f1"
} else {
"no f1"
}
}
"#,
)
.file(
"bar/Cargo.toml",
r#"
[package]
name = "bar"
version = "0.0.1"
[dependencies]
foo = { path = ".." }
"#,
)
.file(
"bar/src/main.rs",
r#"
extern crate foo;
fn main() {
assert_eq!(foo::hello(), "no f1");
}
"#,
)
.build();
// Build the dylib with `f1` feature.
p.cargo("build --features f1").run();
// Check that building without `f1` uses a dylib without `f1`.
p.cargo("run -p bar").run();
}
#[cargo_test]
fn warn_if_default_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies.bar]
path = "bar"
optional = true
[features]
default-features = ["bar"]
"#,
)
.file("src/main.rs", "fn main() {}")
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file("bar/src/lib.rs", "pub fn bar() {}")
.build();
p.cargo("build")
.with_stderr(
r#"
[WARNING] `default-features = [".."]` was found in [features]. Did you mean to use `default = [".."]`?
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
"#.trim(),
).run();
}
#[cargo_test]
fn no_feature_for_non_optional_dep() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[dependencies]
bar = { path = "bar" }
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(not(feature = "bar"))]
fn main() {
}
"#,
)
.file(
"bar/Cargo.toml",
r#"
[project]
name = "bar"
version = "0.0.1"
authors = []
[features]
a = []
"#,
)
.file("bar/src/lib.rs", "pub fn bar() {}")
.build();
p.cargo("build --features bar/a").run();
}
#[cargo_test]
fn features_option_given_twice() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
a = []
b = []
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(all(feature = "a", feature = "b"))]
fn main() {}
"#,
)
.build();
p.cargo("build --features a --features b").run();
}
#[cargo_test]
fn multi_multi_features() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
a = []
b = []
c = []
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(all(feature = "a", feature = "b", feature = "c"))]
fn main() {}
"#,
)
.build();
p.cargo("build --features a --features").arg("b c").run();
}
#[cargo_test]
fn cli_parse_ok() {
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.0.1"
authors = []
[features]
a = []
"#,
)
.file(
"src/main.rs",
r#"
#[cfg(feature = "a")]
fn main() {
assert_eq!(std::env::args().nth(1).unwrap(), "b");
}
"#,
)
.build();
p.cargo("run --features a b").run();
}
#[cargo_test]
fn all_features_virtual_ws() {
// What happens with `--all-features` in the root of a virtual workspace.
// Some of this behavior is a little strange (member dependencies also
// have all features enabled, one might expect `f4` to be disabled).
let p = project()
.file(
"Cargo.toml",
r#"
[workspace]
members = ["a", "b"]
"#,
)
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.1.0"
edition = "2018"
[dependencies]
b = {path="../b", optional=true}
[features]
default = ["f1"]
f1 = []
f2 = []
"#,
)
.file(
"a/src/main.rs",
r#"
fn main() {
if cfg!(feature="f1") {
println!("f1");
}
if cfg!(feature="f2") {
println!("f2");
}
#[cfg(feature="b")]
b::f();
}
"#,
)
.file(
"b/Cargo.toml",
r#"
[package]
name = "b"
version = "0.1.0"
[features]
default = ["f3"]
f3 = []
f4 = []
"#,
)
.file(
"b/src/lib.rs",
r#"
pub fn f() {
if cfg!(feature="f3") {
println!("f3");
}
if cfg!(feature="f4") {
println!("f4");
}
}
"#,
)
.build();
p.cargo("run").with_stdout("f1\n").run();
p.cargo("run --all-features")
.with_stdout("f1\nf2\nf3\nf4\n")
.run();
// In `a`, it behaves differently. :(
p.cargo("run --all-features")
.cwd("a")
.with_stdout("f1\nf2\nf3\n")
.run();
}
#[cargo_test]
fn slash_optional_enables() {
// --features dep/feat will enable `dep` and set its feature.
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[dependencies]
dep = {path="dep", optional=true}
"#,
)
.file(
"src/lib.rs",
r#"
#[cfg(not(feature="dep"))]
compile_error!("dep not set");
"#,
)
.file(
"dep/Cargo.toml",
r#"
[package]
name = "dep"
version = "0.1.0"
[features]
feat = []
"#,
)
.file(
"dep/src/lib.rs",
r#"
#[cfg(not(feature="feat"))]
compile_error!("feat not set");
"#,
)
.build();
p.cargo("check")
.with_status(101)
.with_stderr_contains("[..]dep not set[..]")
.run();
p.cargo("check --features dep/feat").run();
}
#[cargo_test]
fn registry_summary_order_doesnt_matter() {
// Checks for an issue where the resolver depended on the order of entries
// in the registry summary. If there was a non-optional dev-dependency
// that appeared before an optional normal dependency, then the resolver
// would not activate the optional dependency with a pkg/featname feature
// syntax.
Package::new("dep", "0.1.0")
.feature("feat1", &[])
.file(
"src/lib.rs",
r#"
#[cfg(feature="feat1")]
pub fn work() {
println!("it works");
}
"#,
)
.publish();
Package::new("bar", "0.1.0")
.feature("bar_feat", &["dep/feat1"])
.add_dep(Dependency::new("dep", "0.1.0").dev())
.add_dep(Dependency::new("dep", "0.1.0").optional(true))
.file(
"src/lib.rs",
r#"
// This will fail to compile without `dep` optional dep activated.
extern crate dep;
pub fn doit() {
dep::work();
}
"#,
)
.publish();
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
edition = "2018"
[dependencies]
bar = { version="0.1", features = ["bar_feat"] }
"#,
)
.file(
"src/main.rs",
r#"
fn main() {
bar::doit();
}
"#,
)
.build();
p.cargo("run")
.with_stderr(
"\
[UPDATING] [..]
[DOWNLOADING] crates ...
[DOWNLOADED] [..]
[DOWNLOADED] [..]
[COMPILING] dep v0.1.0
[COMPILING] bar v0.1.0
[COMPILING] foo v0.1.0 [..]
[FINISHED] [..]
[RUNNING] `target/debug/foo[EXE]`
",
)
.with_stdout("it works")
.run();
}
#[cargo_test]
fn nonexistent_required_features() {
Package::new("required_dependency", "0.1.0")
.feature("simple", &[])
.publish();
Package::new("optional_dependency", "0.2.0")
.feature("optional", &[])
.publish();
let p = project()
.file(
"Cargo.toml",
r#"
[project]
name = "foo"
version = "0.1.0"
[features]
existing = []
fancy = ["optional_dependency"]
[dependencies]
required_dependency = { version = "0.1", optional = false}
optional_dependency = { version = "0.2", optional = true}
[[example]]
name = "ololo"
required-features = ["not_present",
"existing",
"fancy",
"required_dependency/not_existing",
"required_dependency/simple",
"optional_dependency/optional",
"not_specified_dependency/some_feature"]
"#,
)
.file("src/main.rs", "fn main() {}")
.file("examples/ololo.rs", "fn main() {}")
.build();
p.cargo("build --examples")
.with_stderr_contains(
"\
[WARNING] invalid feature `not_present` in required-features of target `ololo`: \
`not_present` is not present in [features] section
[WARNING] invalid feature `required_dependency/not_existing` in required-features \
of target `ololo`: feature `not_existing` does not exist in package \
`required_dependency v0.1.0`
[WARNING] invalid feature `not_specified_dependency/some_feature` in required-features \
of target `ololo`: dependency `not_specified_dependency` does not exist
",
)
.run();
}
#[cargo_test]
fn invalid_feature_names_warning() {
// Warnings for more restricted feature syntax.
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[features]
# Some valid, but unusual names, shouldn't warn.
"c++17" = []
"128bit" = []
"_foo" = []
"feat-name" = []
"feat_name" = []
"foo.bar" = []
# Invalid names.
"+foo" = []
"-foo" = []
".foo" = []
"foo:bar" = []
"foo?" = []
"?foo" = []
"ⒶⒷⒸ" = []
"a¼" = []
"#,
)
.file("src/lib.rs", "")
.build();
// Unfortunately the warnings are duplicated due to the Summary being
// loaded twice (once in the Workspace, and once in PackageRegistry) and
// Cargo does not have a de-duplication system. This should probably be
// OK, since I'm not expecting this to affect anyone.
p.cargo("check")
.with_stderr("\
[WARNING] invalid character `+` in feature `+foo` in package foo v0.1.0 ([ROOT]/foo), the first character must be a Unicode XID start character or digit (most letters or `_` or `0` to `9`)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `-` in feature `-foo` in package foo v0.1.0 ([ROOT]/foo), the first character must be a Unicode XID start character or digit (most letters or `_` or `0` to `9`)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `.` in feature `.foo` in package foo v0.1.0 ([ROOT]/foo), the first character must be a Unicode XID start character or digit (most letters or `_` or `0` to `9`)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `?` in feature `?foo` in package foo v0.1.0 ([ROOT]/foo), the first character must be a Unicode XID start character or digit (most letters or `_` or `0` to `9`)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `¼` in feature `a¼` in package foo v0.1.0 ([ROOT]/foo), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `:` in feature `foo:bar` in package foo v0.1.0 ([ROOT]/foo), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `?` in feature `foo?` in package foo v0.1.0 ([ROOT]/foo), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `Ⓐ` in feature `ⒶⒷⒸ` in package foo v0.1.0 ([ROOT]/foo), the first character must be a Unicode XID start character or digit (most letters or `_` or `0` to `9`)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `Ⓑ` in feature `ⒶⒷⒸ` in package foo v0.1.0 ([ROOT]/foo), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[WARNING] invalid character `Ⓒ` in feature `ⒶⒷⒸ` in package foo v0.1.0 ([ROOT]/foo), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
This was previously accepted but is being phased out; it will become a hard error in a future release.
For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[CHECKING] foo v0.1.0 [..]
[FINISHED] [..]
")
.run();
}
#[cargo_test]
fn invalid_feature_names_error() {
// Errors for more restricted feature syntax.
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[features]
"foo/bar" = []
"#,
)
.file("src/lib.rs", "")
.build();
p.cargo("check")
.with_status(101)
.with_stderr(
"\
error: failed to parse manifest at `[CWD]/Cargo.toml`
Caused by:
feature named `foo/bar` is not allowed to contain slashes
",
)
.run();
}
#[cargo_test]
fn default_features_conflicting_warning() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
authors = []
[dependencies]
a = { path = "a", features = ["f1"], default-features = false, default_features = false }
"#,
)
.file("src/lib.rs", "")
.file(
"a/Cargo.toml",
r#"
[package]
name = "a"
version = "0.1.0"
authors = []
[features]
default = ["f1"]
f1 = []
"#,
)
.file("a/src/lib.rs", "")
.build();
p.cargo("build")
.with_stderr_contains(
"[WARNING] conflicting between `default-features` and `default_features` in the `a` dependency.\n
`default_features` is ignored and not recommended for use in the future"
)
.run();
}