Revision control
Copy as Markdown
Other Tools
use std::env::current_dir;
use std::path::PathBuf;
use semver::Version;
use cargo_metadata::{CargoOpt, Error, MetadataCommand};
use serde::Deserialize;
#[derive(Debug, PartialEq, Eq, Deserialize)]
struct TestPackageMetadata {
some_field: bool,
other_field: String,
}
#[test]
fn metadata() {
let metadata = MetadataCommand::new().no_deps().exec().unwrap();
let this = &metadata.packages[0];
assert_eq!(this.name, "cargo_metadata");
assert_eq!(this.targets.len(), 3);
let lib = this
.targets
.iter()
.find(|t| t.name == "cargo_metadata")
.unwrap();
assert_eq!(lib.kind[0], "lib");
assert_eq!(lib.crate_types[0], "lib");
let selftest = this.targets.iter().find(|t| t.name == "selftest").unwrap();
assert_eq!(selftest.name, "selftest");
assert_eq!(selftest.kind[0], "test");
assert_eq!(selftest.crate_types[0], "bin");
let package_metadata = &metadata.packages[0]
.metadata
.as_object()
.expect("package.metadata must be a table.");
assert_eq!(package_metadata.len(), 1);
let value = package_metadata.get("cargo_metadata_test").unwrap();
let test_package_metadata: TestPackageMetadata = serde_json::from_value(value.clone()).unwrap();
assert_eq!(
test_package_metadata,
TestPackageMetadata {
some_field: true,
other_field: "foo".into(),
}
);
}
#[test]
fn builder_interface() {
let _ = MetadataCommand::new()
.manifest_path("Cargo.toml")
.exec()
.unwrap();
let _ = MetadataCommand::new()
.manifest_path(String::from("Cargo.toml"))
.exec()
.unwrap();
let _ = MetadataCommand::new()
.manifest_path(PathBuf::from("Cargo.toml"))
.exec()
.unwrap();
let _ = MetadataCommand::new()
.manifest_path("Cargo.toml")
.no_deps()
.exec()
.unwrap();
let _ = MetadataCommand::new()
.manifest_path("Cargo.toml")
.features(CargoOpt::AllFeatures)
.exec()
.unwrap();
let _ = MetadataCommand::new()
.manifest_path("Cargo.toml")
.current_dir(current_dir().unwrap())
.exec()
.unwrap();
}
#[test]
fn error1() {
match MetadataCommand::new().manifest_path("foo").exec() {
Err(Error::CargoMetadata { stderr }) => assert_eq!(
stderr.trim(),
"error: the manifest-path must be a path to a Cargo.toml file"
),
_ => unreachable!(),
}
}
#[test]
fn error2() {
match MetadataCommand::new()
.manifest_path("foo/Cargo.toml")
.exec()
{
Err(Error::CargoMetadata { stderr }) => assert_eq!(
stderr.trim(),
"error: manifest path `foo/Cargo.toml` does not exist"
),
_ => unreachable!(),
}
}
#[test]
fn cargo_path() {
match MetadataCommand::new()
.cargo_path("this does not exist")
.exec()
{
Err(Error::Io(e)) => assert_eq!(e.kind(), std::io::ErrorKind::NotFound),
_ => unreachable!(),
}
}
#[test]
fn metadata_deps() {
std::env::set_var("CARGO_PROFILE", "3");
let metadata = MetadataCommand::new()
.manifest_path("Cargo.toml")
.exec()
.unwrap();
let this_id = metadata
.workspace_members
.first()
.expect("Did not find ourselves");
let this = &metadata[this_id];
assert_eq!(this.name, "cargo_metadata");
let workspace_packages = metadata.workspace_packages();
assert_eq!(workspace_packages.len(), 1);
assert_eq!(&workspace_packages[0].id, this_id);
let lib = this
.targets
.iter()
.find(|t| t.name == "cargo_metadata")
.unwrap();
assert_eq!(lib.kind[0], "lib");
assert_eq!(lib.crate_types[0], "lib");
let selftest = this.targets.iter().find(|t| t.name == "selftest").unwrap();
assert_eq!(selftest.name, "selftest");
assert_eq!(selftest.kind[0], "test");
assert_eq!(selftest.crate_types[0], "bin");
let dependencies = &this.dependencies;
let serde = dependencies
.iter()
.find(|dep| dep.name == "serde")
.expect("Did not find serde dependency");
assert_eq!(serde.kind, cargo_metadata::DependencyKind::Normal);
assert!(!serde.req.matches(&Version::parse("1.0.0").unwrap()));
assert!(serde.req.matches(&Version::parse("1.99.99").unwrap()));
assert!(!serde.req.matches(&Version::parse("2.0.0").unwrap()));
}