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