tests/test_text.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 var str = "Woe to you, oh earth and sea for the Devil sends the beast with wrath because he knows the time is short. Let him who hath understanding reckon the number of the beast, for it is a human number, its number is Six Hundred and Sixty-Six."
  16 var spaces = "           "
  17 var numstr = "1001"
  18
  19 var txt: Text
  20 var trimable: Text
  21 var num: Text
  22
  23 txt = str
  24 trimable = spaces + str + spaces
  25 num = numstr
  26
  27 #alt1 txt = new FlatBuffer.from(str)
  28 #alt1 trimable = new FlatBuffer.from(spaces)
  29 #alt1 trimable.append(str)
  30 #alt1 trimable.append(spaces)
  31 #alt1 num = new FlatBuffer.from(numstr)
  32
  33 #alt2 txt = new RopeString.from(str)
  34 #alt2 trimable = new RopeString.from(spaces)
  35 #alt2 trimable = trimable + str
  36 #alt2 trimable = trimable + spaces
  37 #alt2 num = new RopeString.from(numstr)
  38
  39 # Test Text methods on all types of receivers
  40
  41 print txt.substring(0, 105)
  42 print txt.substring_from(106)
  43 print txt.length
  44 assert not txt.is_empty
  45 print txt.index_of('h')
  46 print txt.index_of_from('h', 105)
  47 print txt.index_of('Z')
  48 print txt.last_index_of('L')
  49 print txt.last_index_of_from('D', 105)
  50 print txt.has_substring("Woe", 0)
  51 print txt.has_substring("Let", 106)
  52 assert trimable != txt
  53 assert trimable.trim == txt
  54 assert num.is_numeric
  55 assert txt.has_prefix("Woe")
  56 assert txt.has_suffix("Six.")
  57 assert txt.hash == trimable.trim.hash
  58
  59 # Test Text.chars (SequenceRead[Char]) methods on all receivers
  60
  61 var chars = txt.chars
  62
  63 assert chars != txt.substring_from(106).chars
  64 assert chars[0] == 'W'
  65 assert chars.count('o') == 11
  66 assert chars.first == chars[0]
  67 assert chars.has('L')
  68 assert spaces.chars.has_only(' ')
  69 assert chars.index_of('D') == 37
  70 assert not chars.is_empty
  71 var count = 0
  72 for i in chars do
  73         assert i != '!'
  74         printn i
  75         count += 1
  76 end
  77 printn "\n"
  78 assert count == txt.length
  79 var iter_from = txt.substring_from(105).chars.iterator
  80 var txt_iter_from = chars.iterator_from(105)
  81 while iter_from.is_ok do
  82         assert iter_from.item == txt_iter_from.item
  83         iter_from.next
  84         txt_iter_from.next
  85 end
  86 assert not iter_from.is_ok and not txt_iter_from.is_ok
  87 var txt_reviter = chars.reverse_iterator_from(104)
  88 var sub_reviter = txt.substring(0,105).chars.reverse_iterator
  89 while txt_reviter.is_ok do
  90         assert txt_reviter.item == sub_reviter.item
  91         txt_reviter.next
  92         sub_reviter.next
  93 end
  94 print chars.join(" ")