cargo/tests/testsuite/path.rs

//! Tests for `path` dependencies.

use cargo_test_support::paths::{self, CargoPathExt};
use cargo_test_support::registry::Package;
use cargo_test_support::{basic_lib_manifest, basic_manifest, main_file, project};
use cargo_test_support::{sleep_ms, t};
use std::fs;

#[cargo_test]
// I have no idea why this is failing spuriously on Windows;
// for more info, see #3466.
#[cfg(not(windows))]
fn cargo_compile_with_nested_deps_shorthand() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]

                version = "0.5.0"
                path = "bar"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .file(
            "bar/Cargo.toml",
            r#"
                [package]

                name = "bar"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.baz]

                version = "0.5.0"
                path = "baz"

                [lib]

                name = "bar"
            "#,
        )
        .file(
            "bar/src/bar.rs",
            r#"
                extern crate baz;

                pub fn gimme() -> String {
                    baz::gimme()
                }
            "#,
        )
        .file("bar/baz/Cargo.toml", &basic_lib_manifest("baz"))
        .file(
            "bar/baz/src/baz.rs",
            r#"
                pub fn gimme() -> String {
                    "test passed".to_string()
                }
            "#,
        )
        .build();

    p.cargo("build")
        .with_stderr(
            "[COMPILING] baz v0.5.0 ([CWD]/bar/baz)\n\
             [COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();

    assert!(p.bin("foo").is_file());

    p.process(&p.bin("foo")).with_stdout("test passed\n").run();

    println!("cleaning");
    p.cargo("clean -v")
        .with_stderr(
            "[REMOVING] [CWD]/target\n\
             [REMOVED] [..]",
        )
        .run();
    println!("building baz");
    p.cargo("build -p baz")
        .with_stderr(
            "[COMPILING] baz v0.5.0 ([CWD]/bar/baz)\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
    println!("building foo");
    p.cargo("build -p foo")
        .with_stderr(
            "[COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
}

#[cargo_test]
fn cargo_compile_with_root_dev_deps() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dev-dependencies.bar]

                version = "0.5.0"
                path = "../bar"

                [[bin]]
                name = "foo"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .build();
    let _p2 = project()
        .at("bar")
        .file("Cargo.toml", &basic_manifest("bar", "0.5.0"))
        .file(
            "src/lib.rs",
            r#"
                pub fn gimme() -> &'static str {
                    "zoidberg"
                }
            "#,
        )
        .build();

    p.cargo("check")
        .with_status(101)
        .with_stderr_contains("[..]can't find crate for `bar`")
        .run();
}

#[cargo_test]
fn cargo_compile_with_root_dev_deps_with_testing() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dev-dependencies.bar]

                version = "0.5.0"
                path = "../bar"

                [[bin]]
                name = "foo"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .build();
    let _p2 = project()
        .at("bar")
        .file("Cargo.toml", &basic_manifest("bar", "0.5.0"))
        .file(
            "src/lib.rs",
            r#"
                pub fn gimme() -> &'static str {
                    "zoidberg"
                }
            "#,
        )
        .build();

    p.cargo("test")
        .with_stderr(
            "\
[COMPILING] [..] v0.5.0 ([..])
[COMPILING] [..] v0.5.0 ([..])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] [..] (target/debug/deps/foo-[..][EXE])",
        )
        .with_stdout_contains("running 0 tests")
        .run();
}

#[cargo_test]
fn cargo_compile_with_transitive_dev_deps() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]

                version = "0.5.0"
                path = "bar"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .file(
            "bar/Cargo.toml",
            r#"
                [package]

                name = "bar"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dev-dependencies.baz]

                git = "git://example.com/path/to/nowhere"

                [lib]

                name = "bar"
            "#,
        )
        .file(
            "bar/src/bar.rs",
            r#"
                pub fn gimme() -> &'static str {
                    "zoidberg"
                }
            "#,
        )
        .build();

    p.cargo("build")
        .with_stderr(
            "[COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) in \
             [..]\n",
        )
        .run();

    assert!(p.bin("foo").is_file());

    p.process(&p.bin("foo")).with_stdout("zoidberg\n").run();
}

#[cargo_test]
fn no_rebuild_dependency() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]
                path = "bar"
            "#,
        )
        .file("src/main.rs", "extern crate bar; fn main() { bar::bar() }")
        .file("bar/Cargo.toml", &basic_lib_manifest("bar"))
        .file("bar/src/bar.rs", "pub fn bar() {}")
        .build();
    // First time around we should compile both foo and bar
    p.cargo("check")
        .with_stderr(
            "[CHECKING] bar v0.5.0 ([CWD]/bar)\n\
             [CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();

    sleep_ms(1000);
    p.change_file(
        "src/main.rs",
        r#"
            extern crate bar;
            fn main() { bar::bar(); }
        "#,
    );
    // Don't compile bar, but do recompile foo.
    p.cargo("check")
        .with_stderr(
            "[CHECKING] foo v0.5.0 ([..])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
}

#[cargo_test]
fn deep_dependencies_trigger_rebuild() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]
                path = "bar"
            "#,
        )
        .file("src/main.rs", "extern crate bar; fn main() { bar::bar() }")
        .file(
            "bar/Cargo.toml",
            r#"
                [package]

                name = "bar"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [lib]
                name = "bar"
                [dependencies.baz]
                path = "../baz"
            "#,
        )
        .file(
            "bar/src/bar.rs",
            "extern crate baz; pub fn bar() { baz::baz() }",
        )
        .file("baz/Cargo.toml", &basic_lib_manifest("baz"))
        .file("baz/src/baz.rs", "pub fn baz() {}")
        .build();
    p.cargo("check")
        .with_stderr(
            "[CHECKING] baz v0.5.0 ([CWD]/baz)\n\
             [CHECKING] bar v0.5.0 ([CWD]/bar)\n\
             [CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
    p.cargo("check").with_stderr("[FINISHED] [..]").run();

    // Make sure an update to baz triggers a rebuild of bar
    //
    // We base recompilation off mtime, so sleep for at least a second to ensure
    // that this write will change the mtime.
    sleep_ms(1000);
    p.change_file("baz/src/baz.rs", r#"pub fn baz() { println!("hello!"); }"#);
    sleep_ms(1000);
    p.cargo("check")
        .with_stderr(
            "[CHECKING] baz v0.5.0 ([CWD]/baz)\n\
             [CHECKING] bar v0.5.0 ([CWD]/bar)\n\
             [CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();

    // Make sure an update to bar doesn't trigger baz
    sleep_ms(1000);
    p.change_file(
        "bar/src/bar.rs",
        r#"
            extern crate baz;
            pub fn bar() { println!("hello!"); baz::baz(); }
        "#,
    );
    sleep_ms(1000);
    p.cargo("check")
        .with_stderr(
            "[CHECKING] bar v0.5.0 ([CWD]/bar)\n\
             [CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
}

#[cargo_test]
fn no_rebuild_two_deps() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]
                path = "bar"
                [dependencies.baz]
                path = "baz"
            "#,
        )
        .file("src/main.rs", "extern crate bar; fn main() { bar::bar() }")
        .file(
            "bar/Cargo.toml",
            r#"
                [package]

                name = "bar"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [lib]
                name = "bar"
                [dependencies.baz]
                path = "../baz"
            "#,
        )
        .file("bar/src/bar.rs", "pub fn bar() {}")
        .file("baz/Cargo.toml", &basic_lib_manifest("baz"))
        .file("baz/src/baz.rs", "pub fn baz() {}")
        .build();
    p.cargo("build")
        .with_stderr(
            "[COMPILING] baz v0.5.0 ([CWD]/baz)\n\
             [COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
    assert!(p.bin("foo").is_file());
    p.cargo("build").with_stderr("[FINISHED] [..]").run();
    assert!(p.bin("foo").is_file());
}

#[cargo_test]
fn nested_deps_recompile() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]

                version = "0.5.0"
                path = "src/bar"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .file("src/bar/Cargo.toml", &basic_lib_manifest("bar"))
        .file("src/bar/src/bar.rs", "pub fn gimme() -> i32 { 92 }")
        .build();

    p.cargo("check")
        .with_stderr(
            "[CHECKING] bar v0.5.0 ([CWD]/src/bar)\n\
             [CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
    sleep_ms(1000);

    p.change_file("src/main.rs", r#"fn main() {}"#);

    // This shouldn't recompile `bar`
    p.cargo("check")
        .with_stderr(
            "[CHECKING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();
}

#[cargo_test]
fn error_message_for_missing_manifest() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]

                path = "src/bar"
            "#,
        )
        .file("src/lib.rs", "")
        .file("src/bar/not-a-manifest", "")
        .build();

    p.cargo("check")
        .with_status(101)
        .with_stderr(
            "\
[ERROR] failed to get `bar` as a dependency of package `foo v0.5.0 [..]`

Caused by:
  failed to load source for dependency `bar`

Caused by:
  Unable to update [CWD]/src/bar

Caused by:
  failed to read `[..]bar/Cargo.toml`

Caused by:
  [..] (os error [..])
",
        )
        .run();
}

#[cargo_test]
fn override_relative() {
    let bar = project()
        .at("bar")
        .file("Cargo.toml", &basic_manifest("bar", "0.5.0"))
        .file("src/lib.rs", "")
        .build();

    fs::create_dir(&paths::root().join(".cargo")).unwrap();
    fs::write(
        &paths::root().join(".cargo/config.toml"),
        r#"paths = ["bar"]"#,
    )
    .unwrap();

    let p = project()
        .file(
            "Cargo.toml",
            &format!(
                r#"
                    [package]

                    name = "foo"
                    version = "0.5.0"
                    authors = ["wycats@example.com"]

                    [dependencies.bar]
                    path = '{}'
                "#,
                bar.root().display()
            ),
        )
        .file("src/lib.rs", "")
        .build();
    p.cargo("check -v").run();
}

#[cargo_test]
fn override_self() {
    let bar = project()
        .at("bar")
        .file("Cargo.toml", &basic_manifest("bar", "0.5.0"))
        .file("src/lib.rs", "")
        .build();

    let p = project();
    let root = p.root();
    let p = p
        .file(
            ".cargo/config.toml",
            &format!("paths = ['{}']", root.display()),
        )
        .file(
            "Cargo.toml",
            &format!(
                r#"
                    [package]

                    name = "foo"
                    version = "0.5.0"
                    authors = ["wycats@example.com"]

                    [dependencies.bar]
                    path = '{}'

                "#,
                bar.root().display()
            ),
        )
        .file("src/lib.rs", "")
        .file("src/main.rs", "fn main() {}")
        .build();

    p.cargo("check").run();
}

#[cargo_test]
fn override_path_dep() {
    let bar = project()
        .at("bar")
        .file(
            "p1/Cargo.toml",
            r#"
                 [package]
                 name = "p1"
                 version = "0.5.0"
                 authors = []

                 [dependencies.p2]
                 path = "../p2"
            "#,
        )
        .file("p1/src/lib.rs", "")
        .file("p2/Cargo.toml", &basic_manifest("p2", "0.5.0"))
        .file("p2/src/lib.rs", "")
        .build();

    let p = project()
        .file(
            ".cargo/config.toml",
            &format!(
                "paths = ['{}', '{}']",
                bar.root().join("p1").display(),
                bar.root().join("p2").display()
            ),
        )
        .file(
            "Cargo.toml",
            &format!(
                r#"
                    [package]

                    name = "foo"
                    version = "0.5.0"
                    authors = ["wycats@example.com"]

                    [dependencies.p2]
                    path = '{}'

                "#,
                bar.root().join("p2").display()
            ),
        )
        .file("src/lib.rs", "")
        .build();

    p.cargo("check -v").run();
}

#[cargo_test]
fn path_dep_build_cmd() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]

                name = "foo"
                version = "0.5.0"
                authors = ["wycats@example.com"]

                [dependencies.bar]

                version = "0.5.0"
                path = "bar"
            "#,
        )
        .file("src/main.rs", &main_file(r#""{}", bar::gimme()"#, &["bar"]))
        .file(
            "bar/Cargo.toml",
            r#"
                [package]

                name = "bar"
                version = "0.5.0"
                authors = ["wycats@example.com"]
                build = "build.rs"

                [lib]
                name = "bar"
                path = "src/bar.rs"
            "#,
        )
        .file(
            "bar/build.rs",
            r#"
                use std::fs;
                fn main() {
                    fs::copy("src/bar.rs.in", "src/bar.rs").unwrap();
                }
            "#,
        )
        .file("bar/src/bar.rs.in", "pub fn gimme() -> i32 { 0 }")
        .build();
    p.root().join("bar").move_into_the_past();

    p.cargo("build")
        .with_stderr(
            "[COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) in \
             [..]\n",
        )
        .run();

    assert!(p.bin("foo").is_file());

    p.process(&p.bin("foo")).with_stdout("0\n").run();

    // Touching bar.rs.in should cause the `build` command to run again.
    p.change_file("bar/src/bar.rs.in", "pub fn gimme() -> i32 { 1 }");

    p.cargo("build")
        .with_stderr(
            "[COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) in \
             [..]\n",
        )
        .run();

    p.process(&p.bin("foo")).with_stdout("1\n").run();
}

#[cargo_test]
fn dev_deps_no_rebuild_lib() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                    name = "foo"
                    version = "0.5.0"
                    authors = []

                [dev-dependencies.bar]
                    path = "bar"

                [lib]
                    name = "foo"
                    doctest = false
            "#,
        )
        .file(
            "src/lib.rs",
            r#"
                #[cfg(test)] #[allow(unused_extern_crates)] extern crate bar;
                #[cfg(not(test))] pub fn foo() { env!("FOO"); }
            "#,
        )
        .file("bar/Cargo.toml", &basic_manifest("bar", "0.5.0"))
        .file("bar/src/lib.rs", "pub fn bar() {}")
        .build();
    p.cargo("build")
        .env("FOO", "bar")
        .with_stderr(
            "[COMPILING] foo v0.5.0 ([CWD])\n\
             [FINISHED] dev [unoptimized + debuginfo] target(s) \
             in [..]\n",
        )
        .run();

    p.cargo("test")
        .with_stderr(
            "\
[COMPILING] [..] v0.5.0 ([CWD][..])
[COMPILING] [..] v0.5.0 ([CWD][..])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] [..] (target/debug/deps/foo-[..][EXE])",
        )
        .with_stdout_contains("running 0 tests")
        .run();
}

#[cargo_test]
fn custom_target_no_rebuild() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.5.0"
                authors = []
                [dependencies]
                a = { path = "a" }
                [workspace]
                members = ["a", "b"]
            "#,
        )
        .file("src/lib.rs", "")
        .file("a/Cargo.toml", &basic_manifest("a", "0.5.0"))
        .file("a/src/lib.rs", "")
        .file(
            "b/Cargo.toml",
            r#"
                [package]
                name = "b"
                version = "0.5.0"
                authors = []
                [dependencies]
                a = { path = "../a" }
            "#,
        )
        .file("b/src/lib.rs", "")
        .build();
    p.cargo("check")
        .with_stderr(
            "\
[CHECKING] a v0.5.0 ([..])
[CHECKING] foo v0.5.0 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
        )
        .run();

    t!(fs::rename(
        p.root().join("target"),
        p.root().join("target_moved")
    ));
    p.cargo("check --manifest-path=b/Cargo.toml")
        .env("CARGO_TARGET_DIR", "target_moved")
        .with_stderr(
            "\
[CHECKING] b v0.5.0 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
        )
        .run();
}

#[cargo_test]
fn override_and_depend() {
    let p = project()
        .no_manifest()
        .file(
            "a/a1/Cargo.toml",
            r#"
                [package]
                name = "a1"
                version = "0.5.0"
                authors = []
                [dependencies]
                a2 = { path = "../a2" }
            "#,
        )
        .file("a/a1/src/lib.rs", "")
        .file("a/a2/Cargo.toml", &basic_manifest("a2", "0.5.0"))
        .file("a/a2/src/lib.rs", "")
        .file(
            "b/Cargo.toml",
            r#"
                [package]
                name = "b"
                version = "0.5.0"
                authors = []
                [dependencies]
                a1 = { path = "../a/a1" }
                a2 = { path = "../a/a2" }
            "#,
        )
        .file("b/src/lib.rs", "")
        .file("b/.cargo/config.toml", r#"paths = ["../a"]"#)
        .build();
    p.cargo("check")
        .cwd("b")
        .with_stderr(
            "\
[WARNING] skipping duplicate package `a2` found at `[..]`
[CHECKING] a2 v0.5.0 ([..])
[CHECKING] a1 v0.5.0 ([..])
[CHECKING] b v0.5.0 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
        )
        .run();
}

#[cargo_test]
fn missing_path_dependency() {
    let p = project()
        .file("Cargo.toml", &basic_manifest("a", "0.5.0"))
        .file("src/lib.rs", "")
        .file(
            ".cargo/config.toml",
            r#"paths = ["../whoa-this-does-not-exist"]"#,
        )
        .build();
    p.cargo("check")
        .with_status(101)
        .with_stderr(
            "\
[ERROR] failed to update path override `[..]../whoa-this-does-not-exist` \
(defined in `[..]`)

Caused by:
  failed to read directory `[..]`

Caused by:
  [..] (os error [..])
",
        )
        .run();
}

#[cargo_test]
fn invalid_path_dep_in_workspace_with_lockfile() {
    Package::new("bar", "1.0.0").publish();

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "top"
                version = "0.5.0"
                authors = []

                [workspace]

                [dependencies]
                foo = { path = "foo" }
            "#,
        )
        .file("src/lib.rs", "")
        .file(
            "foo/Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.5.0"
                authors = []

                [dependencies]
                bar = "*"
            "#,
        )
        .file("foo/src/lib.rs", "")
        .build();

    // Generate a lock file
    p.cargo("check").run();

    // Change the dependency on `bar` to an invalid path
    p.change_file(
        "foo/Cargo.toml",
        r#"
            [package]
            name = "foo"
            version = "0.5.0"
            authors = []

            [dependencies]
            bar = { path = "" }
        "#,
    );

    // Make sure we get a nice error. In the past this actually stack
    // overflowed!
    p.cargo("check")
        .with_status(101)
        .with_stderr(
            "\
error: no matching package found
searched package name: `bar`
perhaps you meant:      foo
location searched: [..]
required by package `foo v0.5.0 ([..])`
",
        )
        .run();
}

#[cargo_test]
fn workspace_produces_rlib() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "top"
                version = "0.5.0"
                authors = []

                [workspace]

                [dependencies]
                foo = { path = "foo" }
            "#,
        )
        .file("src/lib.rs", "")
        .file("foo/Cargo.toml", &basic_manifest("foo", "0.5.0"))
        .file("foo/src/lib.rs", "")
        .build();

    p.cargo("build").run();

    assert!(p.root().join("target/debug/libtop.rlib").is_file());
    assert!(!p.root().join("target/debug/libfoo.rlib").is_file());
}

#[cargo_test]
fn deep_path_error() {
    // Test for an error loading a path deep in the dependency graph.
    let p = project()
        .file(
            "Cargo.toml",
            r#"
            [package]
            name = "foo"
            version = "0.1.0"
            [dependencies]
            a = {path="a"}
            "#,
        )
        .file("src/lib.rs", "")
        .file(
            "a/Cargo.toml",
            r#"
             [package]
             name = "a"
             version = "0.1.0"
             [dependencies]
             b = {path="../b"}
            "#,
        )
        .file("a/src/lib.rs", "")
        .file(
            "b/Cargo.toml",
            r#"
             [package]
             name = "b"
             version = "0.1.0"
             [dependencies]
             c = {path="../c"}
            "#,
        )
        .file("b/src/lib.rs", "")
        .build();

    p.cargo("check")
        .with_status(101)
        .with_stderr(
            "\
[ERROR] failed to get `c` as a dependency of package `b v0.1.0 [..]`
    ... which satisfies path dependency `b` of package `a v0.1.0 [..]`
    ... which satisfies path dependency `a` of package `foo v0.1.0 [..]`

Caused by:
  failed to load source for dependency `c`

Caused by:
  Unable to update [..]/foo/c

Caused by:
  failed to read `[..]/foo/c/Cargo.toml`

Caused by:
  [..]
",
        )
        .run();
}

#[cargo_test]
fn catch_tricky_cycle() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "message"
                version = "0.1.0"

                [dev-dependencies]
                test = { path = "test" }
            "#,
        )
        .file("src/lib.rs", "")
        .file(
            "tangle/Cargo.toml",
            r#"
                [package]
                name = "tangle"
                version = "0.1.0"

                [dependencies]
                message = { path = ".." }
                snapshot = { path = "../snapshot" }
            "#,
        )
        .file("tangle/src/lib.rs", "")
        .file(
            "snapshot/Cargo.toml",
            r#"
                [package]
                name = "snapshot"
                version = "0.1.0"

                [dependencies]
                ledger = { path = "../ledger" }
            "#,
        )
        .file("snapshot/src/lib.rs", "")
        .file(
            "ledger/Cargo.toml",
            r#"
                [package]
                name = "ledger"
                version = "0.1.0"

                [dependencies]
                tangle = { path = "../tangle" }
            "#,
        )
        .file("ledger/src/lib.rs", "")
        .file(
            "test/Cargo.toml",
            r#"
                [package]
                name = "test"
                version = "0.1.0"

                [dependencies]
                snapshot = { path = "../snapshot" }
            "#,
        )
        .file("test/src/lib.rs", "")
        .build();

    p.cargo("test")
        .with_stderr_contains("[..]cyclic package dependency[..]")
        .with_status(101)
        .run();
}