mono/tests/bug-400716.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4
   5 namespace Repro {
   6         public enum Bla {
   7                 A,B
   8         }
   9
  10         class Driver {
  11
  12                 static void TestEnumerator<K, T> ()
  13                 {
  14                         object obj = new K[10];
  15                         IEnumerable<T> dd = (IEnumerable<T>)obj;
  16                         var tx = dd.GetEnumerator ();
  17                         IEnumerator<T> x = (IEnumerator<T>)tx;
  18                         x.MoveNext ();
  19                         T t = x.Current;
  20                 }
  21
  22                 static void TestBadEnumerator<K, T> ()
  23                 {
  24                         try {
  25                                 object obj = new K[10];
  26                                 IEnumerable<T> dd = (IEnumerable<T>)obj;
  27                                 var tx = dd.GetEnumerator ();
  28                                 IEnumerator<T> x = (IEnumerator<T>)tx;
  29                                 x.MoveNext ();
  30                                 T t = x.Current;
  31                                 throw new Exception (string.Format ("An InvalidCastException should be thrown for {0} and {1}", typeof (K), typeof (T)));
  32                         } catch (InvalidCastException) {
  33
  34                         }
  35                 }
  36
  37                 public static int Main ()
  38                 {
  39                         TestEnumerator<byte, byte> ();
  40                         TestEnumerator<byte, sbyte> ();
  41                         TestEnumerator<sbyte, byte> ();
  42                         TestEnumerator<sbyte, sbyte> ();
  43
  44                         TestEnumerator<int, int> ();
  45                         TestEnumerator<int, uint> ();
  46                         TestEnumerator<uint, int> ();
  47                         TestEnumerator<uint, uint> ();
  48
  49                         TestEnumerator<Bla, Bla> ();
  50                         TestEnumerator<Bla, int> ();
  51
  52                         TestEnumerator<byte[], byte[]> ();
  53                         TestEnumerator<byte[], sbyte[]> ();
  54                         TestEnumerator<byte[], ICollection<byte>> ();
  55                         TestEnumerator<byte[], IEnumerable<byte>> ();
  56                         TestEnumerator<byte[], IList<byte>> ();
  57                         TestEnumerator<byte[], ICollection<sbyte>> ();
  58                         TestEnumerator<byte[], IEnumerable<sbyte>> ();
  59                         TestEnumerator<byte[], IList<sbyte>> ();
  60                         TestEnumerator<byte[], object> ();
  61                         TestEnumerator<byte[], Array> ();
  62
  63                         TestBadEnumerator<byte[], object[]> ();
  64                         TestBadEnumerator<byte[], byte> ();
  65                         TestBadEnumerator<byte[], sbyte> ();
  66                         TestBadEnumerator<byte[], ICollection<object>> ();
  67
  68                         TestEnumerator<char[], char[]> ();
  69                         TestEnumerator<char[], IEnumerable<char>> ();
  70
  71                         TestEnumerator<int[], IEnumerable<int>> ();
  72                         TestEnumerator<int[], IEnumerable<uint>> ();
  73
  74                         return 0;
  75                 }
  76         }
  77 }
  78