test/jp/co/areaweb/tools/core/TaxTest.java

   1 /*\r
   2  * Created on 2005/06/09\r
   3  *\r
   4  */\r
   5 package jp.co.areaweb.tools.core;\r
   6 \r
   7 import junit.framework.TestCase;\r
   8 \r
   9 /**\r
  10  * @author y_hayashi\r
  11  *\r
  12  */\r
  13 public class TaxTest extends TestCase {\r
  14 \r
  15         /**\r
  16          * テスト１\r
  17          * 総額から税引き価格を求める\r
  18          */\r
  19         public void test001() throws Exception {\r
  20                 assertEquals(95L, Tax.calcBody(100L));\r
  21                 assertEquals(5L, Tax.calcTax(100L));\r
  22                 assertEquals(5L, Tax.toTax(95L));\r
  23                 assertEquals(100L, Tax.toTotal(95L));\r
  24         }\r
  25         \r
  26         /**\r
  27          * テスト2\r
  28          * 端数は四捨五入されること\r
  29          */\r
  30         public void test002() throws Exception {\r
  31                 assertEquals(99L, Tax.calcBody(104L));          // 99.04\r
  32                 assertEquals(5L, Tax.calcTax(104L));\r
  33                 assertEquals(100L, Tax.calcBody(105L));         // 100.0\r
  34                 assertEquals(5L, Tax.calcTax(105L));\r
  35                 assertEquals(101L, Tax.calcBody(106L));         // 100.9\r
  36                 assertEquals(5L, Tax.calcTax(106L));\r
  37                 assertEquals(102L, Tax.calcBody(107L));         // 101.9\r
  38                 assertEquals(5L, Tax.calcTax(106L));\r
  39 \r
  40                 assertEquals(5L, Tax.toTax(99L));\r
  41                 assertEquals(104L, Tax.toTotal(99L));\r
  42                 assertEquals(5L, Tax.toTax(100L));\r
  43                 assertEquals(105L, Tax.toTotal(100L));\r
  44                 assertEquals(5L, Tax.toTax(101L));\r
  45                 assertEquals(106L, Tax.toTotal(101L));\r
  46                 assertEquals(5L, Tax.toTax(102L));\r
  47                 assertEquals(107L, Tax.toTotal(102L));\r
  48         }\r
  49 \r
  50         /**\r
  51          * テスト3\r
  52          * 10兆円までは計算できる。\r
  53          */\r
  54         public void test003() throws Exception {\r
  55                 try {\r
  56                         assertEquals(9523809523810L, Tax.calcBody(10000000000000L));\r
  57                         assertEquals(476190476190L, Tax.calcTax(10000000000000L));\r
  58                         assertEquals(500000000000L, Tax.toTax(10000000000000L));\r
  59                         assertEquals(10500000000000L, Tax.toTotal(10000000000000L));\r
  60                 }\r
  61                 catch (Exception e) {\r
  62                         fail();         // 例外が発生\r
  63                 }\r
  64         }\r
  65 \r
  66         /**\r
  67          * テスト4\r
  68          * 数値が負の場合\r
  69          */\r
  70         public void test004() throws Exception {\r
  71                 assertEquals(-95L, Tax.calcBody(-100L));\r
  72                 assertEquals(-5L, Tax.calcTax(-100L));\r
  73                 assertEquals(-5L, Tax.toTax(-95L));\r
  74                 assertEquals(-100L, Tax.toTotal(-95L));\r
  75         }\r
  76 }\r