mcs/tests/gtest-043.cs

   1 // Static fields in generic types: this is a runtime/JIT-only test
   2 //
   3 // We need to make sure that we're instantiating each closed generic
   4 // type (ie. "Test<int>") only once.
   5
   6 using System;
   7
   8 public class Test<T>
   9 {
  10         public static int Count;
  11
  12         public void Foo ()
  13         {
  14                 Count++;
  15         }
  16
  17         public int GetCount ()
  18         {
  19                 return Count;
  20         }
  21 }
  22
  23 class X
  24 {
  25         static int DoTheTest<T> ()
  26         {
  27                 Test<T> test = new Test<T> ();
  28
  29                 test.Foo ();
  30                 if (test.GetCount () != 1)
  31                         return 1;
  32                 if (Test<T>.Count != 1)
  33                         return 2;
  34
  35                 test.Foo ();
  36                 if (test.GetCount () != 2)
  37                         return 3;
  38                 if (Test<T>.Count != 2)
  39                         return 4;
  40
  41                 test.Foo ();
  42                 if (test.GetCount () != 3)
  43                         return 5;
  44                 if (Test<T>.Count != 3)
  45                         return 6;
  46
  47                 return 0;
  48         }
  49
  50         public static int Main ()
  51         {
  52                 int result = DoTheTest<int> ();
  53                 if (result != 0)
  54                         return result;
  55
  56                 result = DoTheTest<long> () + 10;
  57                 if (result != 10)
  58                         return result;
  59
  60                 Test<int>.Count = 0;
  61                 ++Test<long>.Count;
  62
  63                 result = DoTheTest<int> () + 20;
  64                 if (result != 20)
  65                         return result;
  66
  67                 if (Test<int>.Count != 3)
  68                         return 31;
  69                 if (Test<long>.Count != 4)
  70                         return 32;
  71                 Test<float>.Count = 5;
  72                 if (Test<int>.Count != 3)
  73                         return 33;
  74                 if (Test<long>.Count != 4)
  75                         return 34;
  76
  77                 return 0;
  78         }
  79 }