cargo/tests/testsuite/dep_info.rs

use crate::support::{basic_bin_manifest, main_file, project};
use filetime::FileTime;

#[cargo_test]
fn build_dep_info() {
    let p = project()
        .file("Cargo.toml", &basic_bin_manifest("foo"))
        .file("src/foo.rs", &main_file(r#""i am foo""#, &[]))
        .build();

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

    let depinfo_bin_path = &p.bin("foo").with_extension("d");

    assert!(depinfo_bin_path.is_file());

    let depinfo = p.read_file(depinfo_bin_path.to_str().unwrap());

    let bin_path = p.bin("foo");
    let src_path = p.root().join("src").join("foo.rs");
    let expected_depinfo = format!("{}: {}\n", bin_path.display(), src_path.display());
    assert_eq!(depinfo, expected_depinfo);
}

#[cargo_test]
fn build_dep_info_lib() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
            [package]
            name = "foo"
            version = "0.0.1"
            authors = []

            [[example]]
            name = "ex"
            crate-type = ["lib"]
        "#,
        )
        .file("build.rs", "fn main() {}")
        .file("src/lib.rs", "")
        .file("examples/ex.rs", "")
        .build();

    p.cargo("build --example=ex").run();
    assert!(p.example_lib("ex", "lib").with_extension("d").is_file());
}

#[cargo_test]
fn build_dep_info_rlib() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
            [package]
            name = "foo"
            version = "0.0.1"
            authors = []

            [[example]]
            name = "ex"
            crate-type = ["rlib"]
        "#,
        )
        .file("src/lib.rs", "")
        .file("examples/ex.rs", "")
        .build();

    p.cargo("build --example=ex").run();
    assert!(p.example_lib("ex", "rlib").with_extension("d").is_file());
}

#[cargo_test]
fn build_dep_info_dylib() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
            [package]
            name = "foo"
            version = "0.0.1"
            authors = []

            [[example]]
            name = "ex"
            crate-type = ["dylib"]
        "#,
        )
        .file("src/lib.rs", "")
        .file("examples/ex.rs", "")
        .build();

    p.cargo("build --example=ex").run();
    assert!(p.example_lib("ex", "dylib").with_extension("d").is_file());
}

#[cargo_test]
fn no_rewrite_if_no_change() {
    let p = project().file("src/lib.rs", "").build();

    p.cargo("build").run();
    let dep_info = p.root().join("target/debug/libfoo.d");
    let metadata1 = dep_info.metadata().unwrap();
    p.cargo("build").run();
    let metadata2 = dep_info.metadata().unwrap();

    assert_eq!(
        FileTime::from_last_modification_time(&metadata1),
        FileTime::from_last_modification_time(&metadata2),
    );
}