# frozen_string_literal: true

require "test_helper"

class XmlSanitizerTest < Minitest::Test
  def test_removes_null_character
    assert_equal "hello", Notare::XmlSanitizer.sanitize("hel\x00lo")
  end

  def test_removes_control_characters_0x01_to_0x08
    input = "a\x01b\x02c\x03d\x04e\x05f\x06g\x07h\x08i"
    assert_equal "abcdefghi", Notare::XmlSanitizer.sanitize(input)
  end

  def test_removes_control_characters_0x0b_and_0x0c
    input = "hello\x0Bworld\x0Ctest"
    assert_equal "helloworldtest", Notare::XmlSanitizer.sanitize(input)
  end

  def test_removes_control_characters_0x0e_to_0x1f
    input = "a\x0Eb\x0Fc\x10d\x11e\x1Ff"
    assert_equal "abcdef", Notare::XmlSanitizer.sanitize(input)
  end

  def test_preserves_tab_character
    input = "hello\tworld"
    assert_equal "hello\tworld", Notare::XmlSanitizer.sanitize(input)
  end

  def test_preserves_newline_character
    input = "hello\nworld"
    assert_equal "hello\nworld", Notare::XmlSanitizer.sanitize(input)
  end

  def test_preserves_carriage_return_character
    input = "hello\rworld"
    assert_equal "hello\rworld", Notare::XmlSanitizer.sanitize(input)
  end

  def test_preserves_crlf
    input = "hello\r\nworld"
    assert_equal "hello\r\nworld", Notare::XmlSanitizer.sanitize(input)
  end

  def test_returns_nil_unchanged
    assert_nil Notare::XmlSanitizer.sanitize(nil)
  end

  def test_returns_non_string_unchanged
    assert_equal 123, Notare::XmlSanitizer.sanitize(123)
    assert_equal :symbol, Notare::XmlSanitizer.sanitize(:symbol)
  end

  def test_preserves_unicode_characters
    input = "café naïve 日本語 🎉"
    assert_equal "café naïve 日本語 🎉", Notare::XmlSanitizer.sanitize(input)
  end

  def test_preserves_regular_text
    input = "Hello, World! This is normal text."
    assert_equal input, Notare::XmlSanitizer.sanitize(input)
  end

  def test_handles_empty_string
    assert_equal "", Notare::XmlSanitizer.sanitize("")
  end

  def test_real_world_case_stx_character
    # The actual case from the failed.docx: 0x02 (STX) character
    input = "infrastruktur\x02bidrag"
    assert_equal "infrastrukturbidrag", Notare::XmlSanitizer.sanitize(input)
  end
end