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.to_upper
  42 print txt.to_lower
  43 assert txt * 2 == txt + txt
  44 print txt.substring(0, 105)
  45 print txt.substring_from(106)
  46 print txt.reversed
  47 print txt.length
  48 assert not txt.is_empty
  49 print txt.index_of('h')
  50 print txt.index_of_from('h', 105)
  51 print txt.index_of('Z')
  52 print txt.last_index_of('L')
  53 print txt.last_index_of_from('D', 105)
  54 print txt.has_substring("Woe", 0)
  55 print txt.has_substring("Let", 106)
  56 assert trimable != txt
  57 assert trimable.trim == txt
  58 assert num.is_numeric
  59 assert txt.has_prefix("Woe")
  60 assert txt.has_suffix("Six.")
  61 assert txt.hash == trimable.trim.hash
  62
  63 # Test Text.chars (SequenceRead[Char]) methods on all receivers
  64
  65 var chars = txt.chars
  66
  67 assert chars != txt.substring_from(106).chars
  68 assert (txt.substring(0,105) + txt.substring_from(105)).chars == txt.chars
  69 assert chars[0] == 'W'
  70 assert chars.count('o') == 11
  71 assert chars.first == chars[0]
  72 assert chars.has('L')
  73 assert spaces.chars.has_only(' ')
  74 assert chars.index_of('D') == 37
  75 assert not chars.is_empty
  76 var count = 0
  77 for i in chars do
  78         assert i != '!'
  79         printn i
  80         count += 1
  81 end
  82 printn "\n"
  83 assert count == txt.length
  84 var iter_from = txt.substring_from(105).chars.iterator
  85 var txt_iter_from = chars.iterator_from(105)
  86 while iter_from.is_ok do
  87         assert iter_from.item == txt_iter_from.item
  88         iter_from.next
  89         txt_iter_from.next
  90 end
  91 assert not iter_from.is_ok and not txt_iter_from.is_ok
  92 var txt_reviter = chars.reverse_iterator_from(104)
  93 var sub_reviter = txt.substring(0,105).chars.reverse_iterator
  94 while txt_reviter.is_ok do
  95         assert txt_reviter.item == sub_reviter.item
  96         txt_reviter.next
  97         sub_reviter.next
  98 end
  99 print chars.join(" ")