shouldNotBeNull

1 class Foo {
2     this(int i) {
3         this.i = i;
4     }
5 
6     override string toString() const {
7         import std.conv : to;
8 
9         return i.to!string;
10     }
11 
12     int i;
13 }
14 
15 shouldNotBeNull(new Foo(4));