nu-command 0.114.0

Nushell's built-in commands
Documentation 
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use nu_protocol::record;
use nu_test_support::fs::Stub::FileWithContentToBeTrimmed;
use nu_test_support::nu;
use nu_test_support::playground::Playground;
use nu_test_support::prelude::*;

#[test]
fn split_column() {
    Playground::setup("split_column_test_1", |dirs, sandbox| {
        sandbox.with_files(&[
            FileWithContentToBeTrimmed(
                "sample.txt",
                "
                importer,shipper,tariff_item,name,origin
            ",
            ),
            FileWithContentToBeTrimmed(
                "sample2.txt",
                "
                importer , shipper  , tariff_item  ,   name  ,  origin
            ",
            ),
        ]);

        let actual = nu!(cwd: dirs.test(), r#"
            open sample.txt
            | lines
            | str trim
            | split column ","
            | get column1
        "#);

        assert!(actual.out.contains("shipper"));

        let actual = nu!(cwd: dirs.test(), r#"
            open sample.txt
            | lines
            | str trim
            | split column -n 3 ","
            | get column2
        "#);

        assert!(actual.out.contains("tariff_item,name,origin"));

        let actual = nu!(cwd: dirs.test(), r#"
            open sample.txt
            | lines
            | str trim
            | split column -n 3 --right ","
            | get column0
        "#);

        assert!(actual.out.contains("importer,shipper,tariff_item"));

        let actual = nu!(cwd: dirs.test(), r"
            open sample2.txt
            | lines
            | str trim
            | split column --regex '\s*,\s*'
            | get column1
        ");

        assert!(actual.out.contains("shipper"));
    })
}

#[test]
fn split_column_no_sep_found() -> Result {
    let sample = "stuff";
    let expected = vec![Value::test_record(
        record! { "column0" => Value::test_string(sample) },
    )];

    let code = r#"$in | split column "|""#;
    test()
        .run_with_data(code, sample)
        .expect_value_eq(expected.clone())?;

    let code = r#"$in | split column -n 3 "|""#;
    test()
        .run_with_data(code, sample)
        .expect_value_eq(expected.clone())?;

    let code = r#"$in | split column -n 3 --right "|""#;
    test()
        .run_with_data(code, sample)
        .expect_value_eq(expected.clone())?;
    Ok(())
}

#[test]
fn split_column_number_zero() -> Result {
    let code = r#""x" | split column -n 0 ",""#;
    let expected = vec![Value::test_record(record! {})];
    test().run(code).expect_value_eq(expected.clone())?;
    let code = r#""x" | split column -n 0 --right ",""#;
    test().run(code).expect_value_eq(expected.clone())?;
    Ok(())
}

#[test]
fn split_column_number_error() -> Result {
    let code = r#""x" | split column -n -1 ",""#;
    test().run(code).expect_shell_error()?;
    let code = r#""x" | split column -n -1 --right ",""#;
    test().run(code).expect_shell_error()?;
    Ok(())
}