nushell/crates/nu-std/tests/test_formats.nu

use std assert

def test_data_multiline [] {
  let lines = [
    "{\"a\": 1}",
    "{\"a\": 2}",
    "{\"a\": 3}",
    "{\"a\": 4}",
    "{\"a\": 5}",
    "{\"a\": 6}",
  ]

  if $nu.os-info.name == "windows" {
    $lines | str join "\r\n"
  } else {
    $lines | str join "\n"
  }
}

#[test]
def from_ndjson_multiple_objects [] {
  use std formats *
  let result = test_data_multiline | from ndjson
  let expect = [{a:1},{a:2},{a:3},{a:4},{a:5},{a:6}]
  assert equal $result $expect "could not convert from NDJSON"
}

#[test]
def from_ndjson_single_object [] {
  use std formats *
  let result = '{"a": 1}' | from ndjson
  let expect = [{a:1}]
  assert equal $result $expect "could not convert from NDJSON"
}

#[test]
def from_ndjson_invalid_object [] {
  use std formats *
  assert error { '{"a":1' | from ndjson }
}

#[test]
def from_jsonl_multiple_objects [] {
  use std formats *
  let result = test_data_multiline | from jsonl
  let expect = [{a:1},{a:2},{a:3},{a:4},{a:5},{a:6}]
  assert equal $result $expect "could not convert from JSONL"
}

#[test]
def from_jsonl_single_object [] {
  use std formats *
  let result = '{"a": 1}' | from jsonl
  let expect = [{a:1}]
  assert equal $result $expect "could not convert from JSONL"
}

#[test]
def from_jsonl_invalid_object [] {
  use std formats *
  assert error { '{"a":1' | from jsonl }
}

#[test]
def to_ndjson_multiple_objects [] {
  use std formats *
  let result = [{a:1},{a:2},{a:3},{a:4},{a:5},{a:6}] | to ndjson | str trim
  let expect = test_data_multiline
  assert equal $result $expect "could not convert to NDJSON"
}

#[test]
def to_ndjson_single_object [] {
  use std formats *
  let result = [{a:1}] | to ndjson | str trim
  let expect = "{\"a\": 1}"
  assert equal $result $expect "could not convert to NDJSON"
}

#[test]
def to_jsonl_multiple_objects [] {
  use std formats *
  let result = [{a:1},{a:2},{a:3},{a:4},{a:5},{a:6}] | to jsonl | str trim
  let expect = test_data_multiline
  assert equal $result $expect "could not convert to JSONL"
}

#[test]
def to_jsonl_single_object [] {
  use std formats *
  let result = [{a:1}] | to jsonl | str trim
  let expect = "{\"a\": 1}"
  assert equal $result $expect "could not convert to JSONL"
}