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|
use std::path;
use std::process;
use crate::error::*;
use crate::format;
use crate::msg::*;
/// The `test` subcommand (emulated).
///
/// Created via [`CargoBuild::run_tests`].
///
/// Benefits over spawning `cargo test`:
/// - Able to cache binary path, avoiding cargo overhead.
/// - Independent of CWD.
/// - stdout/stderr are clean of `cargo test` output.
///
/// Required feature: `test_unstable` since the format parsed is unstable.
///
/// Relevant features
/// - `print` for logged output to be printed instead, generally for test writing.
///
/// # Example
///
/// ```rust
/// extern crate escargot;
/// extern crate assert_fs;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// let run = escargot::CargoBuild::new()
/// .test("test")
/// .manifest_path("tests/fixtures/test/Cargo.toml")
/// .target_dir(temp.path())
/// .run_tests().unwrap()
/// .next().unwrap().unwrap();
/// println!("artifact={}", run.path().display());
/// ```
///
/// [`CargoBuild::run_tests`]: crate::CargoBuild::run_tests()
pub struct CargoTest {
bin_path: path::PathBuf,
kind: String,
name: String,
}
impl CargoTest {
pub(crate) fn with_messages(
msgs: CommandMessages,
) -> impl Iterator<Item = Result<Self, CargoError>> {
extract_binary_paths(msgs)
}
/// The `name` of test
///
/// Used to offer filtering or displays.
///
/// # Example
///
/// ```rust
/// extern crate escargot;
/// extern crate assert_fs;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// let run: Result<Vec<_>, _> = escargot::CargoBuild::new()
/// .tests()
/// .current_release()
/// .current_target()
/// .manifest_path("tests/fixtures/test/Cargo.toml")
/// .target_dir(temp.path())
/// .run_tests()
/// .unwrap()
/// .collect();
/// let run = run.unwrap();
/// let mut names: Vec<_> = run.iter().map(|r| r.name()).collect();
/// names.sort_unstable();
/// assert_eq!(names, ["test", "test_fixture", "test_fixture"]);
/// ```
pub fn name(&self) -> &str {
self.name.as_str()
}
/// The `kind` of test
///
/// Used to distinguish between integration tests (`test`) and unit tests (`bin`, `lib`).
///
/// # Example
///
/// ```rust
/// extern crate escargot;
/// extern crate assert_fs;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// let run: Result<Vec<_>, _> = escargot::CargoBuild::new()
/// .tests()
/// .current_release()
/// .current_target()
/// .manifest_path("tests/fixtures/test/Cargo.toml")
/// .target_dir(temp.path())
/// .run_tests()
/// .unwrap()
/// .collect();
/// let run = run.unwrap();
/// let mut kinds: Vec<_> = run.iter().map(|r| r.kind()).collect();
/// kinds.sort_unstable();
/// assert_eq!(kinds, ["bin", "lib", "test"]);
/// ```
pub fn kind(&self) -> &str {
self.kind.as_str()
}
/// Path to the specified binary.
///
/// This is to support alternative ways of launching the binary besides [`Command`].
///
/// # Example
///
/// ```rust
/// extern crate escargot;
/// extern crate assert_fs;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// let run: Vec<_> = escargot::CargoBuild::new()
/// .tests()
/// .current_release()
/// .current_target()
/// .manifest_path("tests/fixtures/test/Cargo.toml")
/// .target_dir(temp.path())
/// .run_tests()
/// .unwrap()
/// .collect();
/// assert_eq!(run.len(), 3);
/// ```
///
/// [`Command`]: std::process::Command
pub fn path(&self) -> &path::Path {
&self.bin_path
}
/// Run the build artifact.
pub fn command(&self) -> process::Command {
let mut cmd = process::Command::new(self.path());
cmd.arg("-Z").arg("unstable-options").arg("--format=json");
cmd
}
/// Run the configured test, returning test events.
pub fn exec(&self) -> CargoResult<CommandMessages> {
CommandMessages::with_command(self.command())
}
}
fn extract_bin(msg: &format::Message<'_>) -> Option<CargoTest> {
match msg {
format::Message::CompilerArtifact(art) => {
if art.profile.test {
let bin_path = art
.filenames
.get(0)
.expect("files must exist")
.to_path_buf();
let kind = art
.target
.kind
.get(0)
.expect("kind must exist")
.as_ref()
.to_owned();
let name = art.target.name.as_ref().to_owned();
Some(CargoTest {
bin_path,
kind,
name,
})
} else {
None
}
}
_ => None,
}
}
fn transpose<T, E>(r: Result<Option<T>, E>) -> Option<Result<T, E>> {
match r {
Ok(Some(x)) => Some(Ok(x)),
Ok(None) => None,
Err(e) => Some(Err(e)),
}
}
fn extract_binary_paths(
msgs: CommandMessages,
) -> impl Iterator<Item = Result<CargoTest, CargoError>> {
msgs.filter_map(move |m| {
let m = m.and_then(|m| {
let m = m.decode()?;
format::log_message(&m);
let p = extract_bin(&m);
Ok(p)
});
transpose(m)
})
}
|
