import 'package:test/test.dart';
import 'package:word_count/word_count.dart';

void main() {
  final wordCount = WordCount();

  group('WordCount', () {
    test('count one word', () {
      final result = wordCount.countWords('word');
      expect(result, equals(<String, int>{'word': 1}));
    }, skip: false);

    test('count one of each word', () {
      final result = wordCount.countWords('one of each');
      expect(result, equals(<String, int>{'one': 1, 'of': 1, 'each': 1}));
    }, skip: false);

    test('multiple occurrences of a word', () {
      final result =
          wordCount.countWords('one fish two fish red fish blue fish');
      expect(
          result,
          equals(<String, int>{
            'one': 1,
            'fish': 4,
            'two': 1,
            'red': 1,
            'blue': 1
          }));
    }, skip: false);

    test('handles cramped lists', () {
      final result = wordCount.countWords('one,two,three');
      expect(result, equals(<String, int>{'one': 1, 'two': 1, 'three': 1}));
    }, skip: false);

    test('handles expanded lists', () {
      final result = wordCount.countWords('one,\ntwo,\nthree');
      expect(result, equals(<String, int>{'one': 1, 'two': 1, 'three': 1}));
    }, skip: false);

    test('ignore punctuation', () {
      final result =
          wordCount.countWords('car: carpet as java: javascript!!&@\$%^&');
      expect(
          result,
          equals(<String, int>{
            'car': 1,
            'carpet': 1,
            'as': 1,
            'java': 1,
            'javascript': 1
          }));
    }, skip: false);

    test('include numbers', () {
      final result = wordCount.countWords('testing, 1, 2 testing');
      expect(result, equals(<String, int>{'testing': 2, '1': 1, '2': 1}));
    }, skip: false);

    test('normalize case', () {
      final result = wordCount.countWords('go Go GO Stop stop');
      expect(result, equals(<String, int>{'go': 3, 'stop': 2}));
    }, skip: false);

    test('with apostrophes', () {
      final result = wordCount.countWords(
          '\'First: don\'t laugh. Then: don\'t cry. You\'re getting it.\'');
      expect(
          result,
          equals(<String, int>{
            'first': 1,
            'don\'t': 2,
            'laugh': 1,
            'then': 1,
            'cry': 1,
            'you\'re': 1,
            'getting': 1,
            'it': 1
          }));
    }, skip: false);

    test('with quotations', () {
      final result =
          wordCount.countWords('Joe can\'t tell between \'large\' and large.');
      expect(
          result,
          equals(<String, int>{
            'joe': 1,
            'can\'t': 1,
            'tell': 1,
            'between': 1,
            'large': 2,
            'and': 1
          }));
    }, skip: false);

    test('substrings from the beginning', () {
      final result =
          wordCount.countWords('Joe can\'t tell between app, apple and a.');
      expect(
          result,
          equals(<String, int>{
            'joe': 1,
            'can\'t': 1,
            'tell': 1,
            'between': 1,
            'app': 1,
            'apple': 1,
            'and': 1,
            'a': 1
          }));
    }, skip: false);

    test('multiple spaces not detected as a word', () {
      final result = wordCount.countWords(' multiple   whitespaces');
      expect(result, equals(<String, int>{'multiple': 1, 'whitespaces': 1}));
    }, skip: false);

    test('alternating word separators not detected as a word', () {
      final result = wordCount.countWords(',\n,one,\n ,two \n \'three\'');
      expect(result, equals(<String, int>{'one': 1, 'two': 1, 'three': 1}));
    }, skip: false);

    test('quotation for word with apostrophe', () {
      final result = wordCount.countWords('can, can\'t, \'can\'t\'');
      expect(result, equals(<String, int>{'can': 1, 'can\'t': 2}));
    }, skip: false);
  });
}