cargo 0.96.0

Cargo, a package manager for Rust.
Documentation 
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//! Tests for workspace member errors.

use crate::prelude::*;
use cargo::core::Shell;
use cargo::core::Workspace;
use cargo::core::compiler::UserIntent;
use cargo::core::resolver::ResolveError;
use cargo::ops::{self, CompileOptions};
use cargo::util::{context::GlobalContext, errors::ManifestError};
use cargo_test_support::paths;
use cargo_test_support::project;
use cargo_test_support::registry;
use cargo_test_support::str;

/// Tests inclusion of a `ManifestError` pointing to a member manifest
/// when that manifest fails to deserialize.
#[cargo_test]
fn toml_deserialize_manifest_error() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.1.0"
                authors = []

                [dependencies]
                bar = { path = "bar" }

                [workspace]
            "#,
        )
        .file("src/main.rs", "fn main() {}")
        .file(
            "bar/Cargo.toml",
            r#"
                [package]
                name = "bar"
                version = "0.1.0"
                authors = []

                [dependencies]
                foobar == "0.55"
            "#,
        )
        .file("bar/src/main.rs", "fn main() {}")
        .build();

    p.cargo("check")
        .with_status(101)
        .with_stderr_data(str![[r#"
[ERROR] extra `=`, expected nothing
 --> bar/Cargo.toml:8:25
  |
8 |                 foobar == "0.55"
  |                         ^
[ERROR] failed to load manifest for dependency `bar`

"#]])
        .run();
}

/// Tests inclusion of a `ManifestError` pointing to a member manifest
/// when that manifest has an invalid dependency path.
#[cargo_test]
fn member_manifest_path_io_error() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.1.0"
                authors = []

                [dependencies]
                bar = { path = "bar" }

                [workspace]
            "#,
        )
        .file("src/main.rs", "fn main() {}")
        .file(
            "bar/Cargo.toml",
            r#"
                [package]
                name = "bar"
                version = "0.1.0"
                authors = []

                [dependencies]
                foobar = { path = "nosuch" }
            "#,
        )
        .file("bar/src/main.rs", "fn main() {}")
        .build();

    let root_manifest_path = p.root().join("Cargo.toml");
    let member_manifest_path = p.root().join("bar").join("Cargo.toml");
    let missing_manifest_path = p.root().join("bar").join("nosuch").join("Cargo.toml");

    let error =
        Workspace::new(&root_manifest_path, &GlobalContext::default().unwrap()).unwrap_err();
    eprintln!("{:?}", error);

    let manifest_err: &ManifestError = error.downcast_ref().expect("Not a ManifestError");
    assert_eq!(manifest_err.manifest_path(), &root_manifest_path);

    let causes: Vec<_> = manifest_err.manifest_causes().collect();
    assert_eq!(causes.len(), 2, "{:?}", causes);
    assert_eq!(causes[0].manifest_path(), &member_manifest_path);
    assert_eq!(causes[1].manifest_path(), &missing_manifest_path);
}

/// Tests dependency version errors provide which package failed via a `ResolveError`.
#[cargo_test]
fn member_manifest_version_error() {
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.1.0"
                authors = []

                [dependencies]
                bar = { path = "bar" }

                [workspace]
            "#,
        )
        .file("src/main.rs", "fn main() {}")
        .file(
            "bar/Cargo.toml",
            r#"
                [package]
                name = "bar"
                version = "0.1.0"
                authors = []

                [dependencies]
                i-dont-exist = "0.55"
            "#,
        )
        .file("bar/src/main.rs", "fn main() {}")
        .build();

    // Prevent this test from accessing the network by setting up .cargo/config.
    registry::init();
    let gctx = GlobalContext::new(
        Shell::from_write(Box::new(Vec::new())),
        paths::cargo_home(),
        paths::cargo_home(),
    );
    let ws = Workspace::new(&p.root().join("Cargo.toml"), &gctx).unwrap();
    let compile_options = CompileOptions::new(&gctx, UserIntent::Build).unwrap();
    let member_bar = ws.members().find(|m| &*m.name() == "bar").unwrap();

    let error = ops::compile(&ws, &compile_options).map(|_| ()).unwrap_err();
    eprintln!("{:?}", error);

    let resolve_err: &ResolveError = error.downcast_ref().expect("Not a ResolveError");
    let package_path = resolve_err.package_path();
    assert_eq!(package_path.len(), 1, "package_path: {:?}", package_path);
    assert_eq!(package_path[0], member_bar.package_id());
}