use super::{Directory, fixture};
use dever::compiler::{build, project::Project};

#[test]
fn native_channels_transfer_values_and_share_close_state() {
    let directory = Directory::new();
    let project = Project::load(&fixture().with_file_name("channel.dever")).unwrap();
    let program = project.check().unwrap();
    for (entry, expected) in [
        ("verify", "true\n"),
        ("creation", "Channel\n"),
        ("nullable", "None\n"),
    ] {
        let binary =
            build::build(&program, &project.sources, entry, &directory.0.join(entry)).unwrap();
        let result = std::process::Command::new(binary).output().unwrap();
        assert!(
            result.status.success(),
            "{}",
            String::from_utf8_lossy(&result.stderr)
        );
        assert_eq!(result.stdout, expected.as_bytes());
    }
}

#[test]
fn channel_faults_keep_original_source_locations() {
    let directory = Directory::new();
    let project = Project::load(&fixture().with_file_name("channel.dever")).unwrap();
    let program = project.check().unwrap();
    for (entry, needle, message) in [
        (
            "invalid",
            "channel(Int, 0)",
            "channel capacity must be within 1..65536",
        ),
        ("closed", "send(values, 42)", "channel is closed"),
    ] {
        let binary =
            build::build(&program, &project.sources, entry, &directory.0.join(entry)).unwrap();
        let result = std::process::Command::new(binary).output().unwrap();
        assert!(!result.status.success());
        let source = &project.sources[0];
        let (line, column) = source.position(source.text.find(needle).unwrap());
        let error = String::from_utf8(result.stderr).unwrap();
        assert!(error.contains(message), "{error}");
        assert!(
            error.contains(&format!("channel.dever:{line}:{column}:")),
            "{error}"
        );
    }
}