nu-command 0.112.2

Nushell's built-in commands
Documentation 
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use nu_test_support::nu;

#[test]
fn unlet_basic() {
    let actual = nu!("let x = 42; unlet $x; $x");

    assert!(actual.err.contains("Variable not found"));
}

#[test]
fn unlet_builtin_nu() {
    let actual = nu!("unlet $nu");

    assert!(actual.err.contains("cannot be deleted"));
}

#[test]
fn unlet_builtin_env() {
    let actual = nu!("unlet $env");

    assert!(actual.err.contains("cannot be deleted"));
}

#[test]
fn unlet_not_variable() {
    let actual = nu!("unlet 42");

    assert!(
        actual
            .err
            .contains("Argument must be a variable reference like $x")
    );
}

#[test]
fn unlet_wrong_number_args() {
    let actual = nu!("unlet");

    assert!(actual.err.contains("unlet takes at least one argument"));
}

#[test]
fn unlet_multiple_args() {
    let actual = nu!("let x = 1; let y = 2; unlet $x $y; $x");

    assert!(actual.err.contains("Variable not found"));
}

#[test]
fn unlet_multiple_deletes_both() {
    let actual = nu!("let x = 1; let y = 2; unlet $x $y; $y");

    assert!(actual.err.contains("Variable not found"));
}