git.gag.com Git - debian/openrocket/blob - core/test/net/sf/openrocket/util/ArrayUtilsTest.java

   1 package net.sf.openrocket.util;
   2
   3 import static org.junit.Assert.assertEquals;
   4 import static org.junit.Assert.assertNull;
   5
   6 import org.junit.Test;
   7
   8 public class ArrayUtilsTest {
   9
  10         @Test(expected=NullPointerException.class)
  11         public void testCopyOfRange_NullArg() {
  12                 ArrayUtils.copyOfRange( (Byte[]) null, 0 , 14);
  13         }
  14
  15         @Test(expected=ArrayIndexOutOfBoundsException.class)
  16         public void testCopyOfRange_StartTooBig() {
  17                 Integer[] original = new Integer[5];
  18                 ArrayUtils.copyOfRange( original, 8 , 14);
  19         }
  20
  21         @Test(expected=ArrayIndexOutOfBoundsException.class)
  22         public void testCopyOfRange_StartTooSmall() {
  23                 Integer[] original = new Integer[5];
  24                 ArrayUtils.copyOfRange( original, -1 , 14);
  25         }
  26
  27         @Test(expected=IllegalArgumentException.class)
  28         public void testCopyOfRange_IllegalRange() {
  29                 Integer[] original = new Integer[5];
  30                 ArrayUtils.copyOfRange( original, 5, 0 );
  31         }
  32
  33         @Test
  34         public void testCopyOfRange() {
  35                 Integer[] original = new Integer[5];
  36                 for ( int i =0; i < 5; i++ ) {
  37                         original[i] = i;
  38                 }
  39                 Integer[] copy = ArrayUtils.copyOfRange( original, 0, 0 );
  40                 assertEquals( 0, copy.length );
  41
  42                 copy = ArrayUtils.copyOfRange( original, 2, 2 );
  43                 assertEquals( 0, copy.length );
  44
  45                 copy = ArrayUtils.copyOfRange( original, 0, 2 );
  46                 assertEquals( 2, copy.length );
  47                 for( int i =0; i< 2; i++ ) {
  48                         assertEquals( original[i], copy[i] );
  49                 }
  50
  51                 copy = ArrayUtils.copyOfRange( original, 2, 5 );
  52                 assertEquals( 3, copy.length );
  53                 for( int i =0; i< 3; i++ ) {
  54                         assertEquals( original[i+2], copy[i] );
  55                 }
  56
  57                 copy = ArrayUtils.copyOfRange( original, 2, 15 );
  58                 assertEquals( 13, copy.length );
  59                 for( int i =0; i< 3; i++ ) {
  60                         assertEquals( original[i+2], copy[i] );
  61                 }
  62                 for ( int i=3; i< 13; i++ ) {
  63                         assertNull(copy[i]);
  64                 }
  65
  66         }
  67
  68         @Test
  69         public void testCopyOfRange_ZeroSize() {
  70                 Integer[] original = new Integer[0];
  71
  72                 Integer[] copy = ArrayUtils.copyOfRange( original, 0, 0 );
  73                 assertEquals( 0, copy.length );
  74
  75                 copy = ArrayUtils.copyOfRange( original, 0, 2 );
  76                 assertEquals( 2, copy.length );
  77                 for( int i =0; i< 2; i++ ) {
  78                         assertEquals( null, copy[i] );
  79                 }
  80
  81         }
  82
  83
  84 }