examples/calculator/src/calculator_test.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2013-2014 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # Test the business logic
  18 module calculator_test
  19
  20 import calculator_logic
  21
  22 # context tests
  23 var context = new CalculatorContext
  24 context.push_digit( 1 )
  25 context.push_digit( 2 )
  26 context.push_op( '+' )
  27 context.push_digit( 3 )
  28 context.push_op( '*' )
  29 context.push_digit( 2 )
  30 context.push_op( '=' )
  31 var r = context.result
  32 assert r == "30.00" else print r or else "-"
  33
  34 context = new CalculatorContext
  35 context.push_digit( 1 )
  36 context.push_digit( 4 )
  37 context.switch_to_decimals
  38 context.push_digit( 1 )
  39 context.push_op( '*' )
  40 context.push_digit( 3 )
  41 context.push_op( '=' )
  42 r = context.result
  43 assert r == "42.30" else print r or else "-"
  44
  45 context.push_op( '+' )
  46 context.push_digit( 1 )
  47 context.push_digit( 1 )
  48 context.push_op( '=' )
  49 r = context.result
  50 assert r == "53.30" else print r or else "-"
  51
  52 context = new CalculatorContext
  53 context.push_digit( 4 )
  54 context.push_digit( 2 )
  55 context.switch_to_decimals
  56 context.push_digit( 3 )
  57 context.push_op( '/' )
  58 context.push_digit( 3 )
  59 context.push_op( '=' )
  60 r = context.result
  61 assert r == "14.10" else print r or else "-"
  62
  63 #test multiple decimals
  64 context = new CalculatorContext
  65 context.push_digit( 5 )
  66 context.push_digit( 0 )
  67 context.switch_to_decimals
  68 context.push_digit( 1 )
  69 context.push_digit( 2 )
  70 context.push_digit( 3 )
  71 context.push_op( '+' )
  72 context.push_digit( 1 )
  73 context.push_op( '=' )
  74 r = context.result
  75 assert r == "51.123" else print r or else "-"
  76
  77 #test 'C' button
  78 context = new CalculatorContext
  79 context.push_digit( 1 )
  80 context.push_digit( 0 )
  81 context.push_op( '+' )
  82 context.push_digit( 1 )
  83 context.push_digit( 0 )
  84 context.push_op( '=' )
  85 context.push_op( 'C' )
  86 r = context.result
  87 assert r == "0.0" else print r or else "-"