test.experimental.stdcpp.string source code

1 module test.experimental.stdcpp..string;
2 
3 import core.experimental.stdcpp.string;
4 
5 alias std_string = basic_string!char;
6 alias std_wstring = basic_string!wchar;
7 
8 unittest
9 {
10     version(Windows)
11     {
12         std_string str = std_string("Hello");
13 
14         assert(str.size == 5);
15         assert(str.length == 5);
16         assert(str.empty == false);
17 
18         assert(sumOfElements_val(str) == 1000);//1500);
19         assert(sumOfElements_ref(str) == 500);
20 
21         std_string str2 = std_string(Default);
22         assert(str2.size == 0);
23         assert(str2.length == 0);
24         assert(str2.empty == true);
25         assert(str2[] == []);
26 
27         // test local instantiations...
28         // there's no basic_string<char16_t> instantiation in C++
29         std_wstring str3 = std_wstring("Hello"w);
30 
31         assert(str3.size == 5);
32         assert(str3.length == 5);
33         assert(str3.empty == false);
34     }
35     else
36     {
37         pragma(msg, "std.string implementation not yet done for linux - gcc/clang");
38     }
39 }
40 
41 
42 extern(C++):
43 
44 // test the ABI for calls to C++
45 int sumOfElements_val(std_string);
46 int sumOfElements_ref(ref const(std_string));
47 
48 // test the ABI for calls from C++
49 int fromC_val(std_string str)
50 {
51     assert(str[] == "Hello");
52     assert(str.front == 'H');
53     assert(str.back == 'o');
54     assert(str.at(2) == 'l');
55 
56 //    str.fill(2);
57 
58     int r;
59     foreach (e; str[])
60         r += e;
61 
62     assert(r == 500);
63     return r;
64 }
65 
66 int fromC_ref(ref const(std_string) str)
67 {
68     int r;
69     foreach (e; str[])
70         r += e;
71     return r;
72 }