# -*- coding: utf-8 -*-
require File.dirname(__FILE__) + '/../../test_helper'

class MultibyteStringScannerTest < MiniTest::Test
  def setup
    @scanner = Sass::Util::MultibyteStringScanner.new("cölorfül")
  end

  def test_initial
    assert_scanner_state 0, 0, nil, nil
  end

  def test_check
    assert_equal 'cö', @scanner.check(/../)
    assert_scanner_state 0, 0, 2, 3
    assert_equal 0, @scanner.pos
    assert_equal 0, @scanner.pos
    assert_equal 2, @scanner.matched_size
    assert_equal 3, @scanner.byte_matched_size
  end

  def test_check_until
    assert_equal 'cölorfü', @scanner.check_until(/f./)
    assert_scanner_state 0, 0, 2, 3
  end

  def test_getch
    assert_equal 'c', @scanner.getch
    assert_equal 'ö', @scanner.getch
    assert_scanner_state 2, 3, 1, 2
  end

  def test_match?
    assert_equal 2, @scanner.match?(/../)
    assert_scanner_state 0, 0, 2, 3
  end

  def test_peek
    assert_equal 'cö', @scanner.peek(2)
    assert_scanner_state 0, 0, nil, nil
  end

  def test_rest_size
    assert_equal 'cö', @scanner.scan(/../)
    assert_equal 6, @scanner.rest_size
  end

  def test_scan
    assert_equal 'cö', @scanner.scan(/../)
    assert_scanner_state 2, 3, 2, 3
  end

  def test_scan_until
    assert_equal 'cölorfü', @scanner.scan_until(/f./)
    assert_scanner_state 7, 9, 2, 3
  end

  def test_skip
    assert_equal 2, @scanner.skip(/../)
    assert_scanner_state 2, 3, 2, 3
  end

  def test_skip_until
    assert_equal 7, @scanner.skip_until(/f./)
    assert_scanner_state 7, 9, 2, 3
  end

  def test_set_pos
    @scanner.pos = 7
    assert_scanner_state 7, 9, nil, nil
    @scanner.pos = 6
    assert_scanner_state 6, 7, nil, nil
    @scanner.pos = 1
    assert_scanner_state 1, 1, nil, nil
  end

  def test_reset
    @scanner.scan(/../)
    @scanner.reset
    assert_scanner_state 0, 0, nil, nil
  end

  def test_scan_full
    assert_equal 'cö', @scanner.scan_full(/../, true, true)
    assert_scanner_state 2, 3, 2, 3

    @scanner.reset
    assert_equal 'cö', @scanner.scan_full(/../, false, true)
    assert_scanner_state 0, 0, 2, 3

    @scanner.reset
    assert_nil @scanner.scan_full(/../, true, false)
    assert_scanner_state 2, 3, 2, 3

    @scanner.reset
    assert_nil @scanner.scan_full(/../, false, false)
    assert_scanner_state 0, 0, 2, 3
  end

  def test_search_full
    assert_equal 'cölorfü', @scanner.search_full(/f./, true, true)
    assert_scanner_state 7, 9, 2, 3

    @scanner.reset
    assert_equal 'cölorfü', @scanner.search_full(/f./, false, true)
    assert_scanner_state 0, 0, 2, 3

    @scanner.reset
    assert_nil @scanner.search_full(/f./, true, false)
    assert_scanner_state 7, 9, 2, 3

    @scanner.reset
    assert_nil @scanner.search_full(/f./, false, false)
    assert_scanner_state 0, 0, 2, 3
  end

  def test_set_string
    @scanner.scan(/../)
    @scanner.string = 'föóbâr'
    assert_scanner_state 0, 0, nil, nil
  end

  def test_terminate
    @scanner.scan(/../)
    @scanner.terminate
    assert_scanner_state 8, 10, nil, nil
  end

  def test_unscan
    @scanner.scan(/../)
    @scanner.scan_until(/f./)
    @scanner.unscan
    assert_scanner_state 2, 3, nil, nil
  end

  private

  def assert_scanner_state(pos, byte_pos, matched_size, byte_matched_size)
    assert_equal pos, @scanner.pos, 'pos'
    assert_equal byte_pos, @scanner.byte_pos, 'byte_pos'
    if matched_size.nil?
      assert_nil @scanner.matched_size, 'matched_size'
    else
      assert_equal matched_size, @scanner.matched_size, 'matched_size'
    end
    if byte_matched_size.nil?
      assert_nil @scanner.byte_matched_size, 'byte_matched_size'
    else
      assert_equal byte_matched_size, @scanner.byte_matched_size, 'byte_matched_size'
    end
  end
end