use assert_cmd::Command;

#[test]

fn eval() {

    let mut cmd = Command::cargo_bin("bud").unwrap();

    let result = cmd.arg("1 + 2").assert().success();

    let result = std::str::from_utf8(&result.get_output().stdout).unwrap();

    assert_eq!(result, "3\n");

}

#[test]

fn pipe() {

    let mut cmd = Command::cargo_bin("bud").unwrap();

    let result = cmd.write_stdin("1 + 2").assert().success();

    let result = std::str::from_utf8(&result.get_output().stdout).unwrap();

    assert_eq!(result, "3\n");

}

#[test]

fn eval_and_pipe() {

    let mut cmd = Command::cargo_bin("bud").unwrap();

    let result = cmd.arg("1 + 2").write_stdin("3 + 4").assert().success();

    let result = std::str::from_utf8(&result.get_output().stdout).unwrap();

    assert_eq!(result, "3\n7\n");

}

#[test]

fn run_file() {

    std::fs::write(

        "run_file.bud",

        br#"

        function test(a, b)

            a + b

        end

    "#,

    )

    .unwrap();

    let mut cmd = Command::cargo_bin("bud").unwrap();

    let result = cmd

        .arg("-f")

        .arg("run_file.bud")

        .arg("test(1, 2)")

        .assert()

        .success();

    let result = std::str::from_utf8(&result.get_output().stdout).unwrap();

    assert_eq!(result, "3\n");

    std::fs::remove_file("run_file.bud").unwrap();

}