nu-command 0.112.2

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

// Inside nu! stdout is piped so it won't be a terminal
#[test]
fn is_terminal_stdout_piped() {
    let actual = nu!("
        is-terminal --stdout
    ");

    assert_eq!(actual.out, "false");
}

#[test]
fn is_terminal_two_streams() {
    let actual = nu!("
        is-terminal --stdin --stderr
    ");

    assert!(actual.err.contains("Only one stream may be checked"));
}