cargo/tests/testsuite/build_lib.rs

use cargotest::support::{basic_bin_manifest, execs, project, Project};
use hamcrest::assert_that;

fn verbose_output_for_lib(p: &Project) -> String {
    format!(
        "\
[COMPILING] {name} v{version} ({url})
[RUNNING] `rustc --crate-name {name} src[/]lib.rs --crate-type lib \
        --emit=dep-info,link -C debuginfo=2 \
        -C metadata=[..] \
        --out-dir [..] \
        -L dependency={dir}[/]target[/]debug[/]deps`
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
        dir = p.root().display(),
        url = p.url(),
        name = "foo",
        version = "0.0.1"
    )
}

#[test]
fn build_lib_only() {
    let p = project("foo")
        .file(
            "Cargo.toml",
            r#"
            [package]

            name = "foo"
            version = "0.0.1"
            authors = ["wycats@example.com"]
        "#,
        )
        .file(
            "src/main.rs",
            r#"
            fn main() {}
        "#,
        )
        .file("src/lib.rs", r#" "#)
        .build();

    assert_that(
        p.cargo("build").arg("--lib").arg("-v"),
        execs()
            .with_status(0)
            .with_stderr(verbose_output_for_lib(&p)),
    );
}

#[test]
fn build_with_no_lib() {
    let p = project("foo")
        .file("Cargo.toml", &basic_bin_manifest("foo"))
        .file(
            "src/main.rs",
            r#"
            fn main() {}
        "#,
        )
        .build();

    assert_that(
        p.cargo("build").arg("--lib"),
        execs()
            .with_status(101)
            .with_stderr("[ERROR] no library targets found"),
    );
}

#[test]
fn build_with_relative_cargo_home_path() {
    let p = project("foo")
        .file(
            "Cargo.toml",
            r#"
            [package]

            name = "foo"
            version = "0.0.1"
            authors = ["wycats@example.com"]

            [dependencies]

            "test-dependency" = { path = "src/test_dependency" }
        "#,
        )
        .file(
            "src/main.rs",
            r#"
            fn main() {}
        "#,
        )
        .file("src/test_dependency/src/lib.rs", r#" "#)
        .file(
            "src/test_dependency/Cargo.toml",
            r#"
            [package]

            name = "test-dependency"
            version = "0.0.1"
            authors = ["wycats@example.com"]
        "#,
        )
        .build();

    assert_that(
        p.cargo("build").env("CARGO_HOME", "./cargo_home/"),
        execs().with_status(0),
    );
}