dcorelib.valueobjects.id source code

1 module dcorelib.valueobjects.id;
2 
3 import dcorelib.valueobjects.constrainedstring;
4 
5 import std.string;
6 import std.conv;
7 import std.stdio;
8 
9 class Id : ConstrainedString
10 {
11     private ubyte colonPos;
12 
13     this(string newValue, string identifier = "") @safe
14     {
15         if (newValue.length <= 10) {
16             throw new Exception("An Id field may not have a length of less than 10 characters");
17         }
18 
19         this.colonPos = to!ubyte(newValue.indexOf(':'));
20 
21         if (this.colonPos < 1) {
22             throw new Exception("An Id field must contain a : in the ID value");
23         }
24 
25         if ((newValue.length - this.colonPos) < 10) {
26             throw new Exception("An Id field must contain a suffix of at least 10 characters");
27         }       
28         
29         // Ids must be at most 45 characters long
30         super(newValue, 45, true, identifier != "" ? identifier : "id");
31     }
32 
33     public string getPrefix() @safe
34     {
35         return this.value[0 .. this.colonPos];
36     }
37 }
38 
39 unittest {
40     /********************** UNIT TESTS THAT SHOULD FAIL ********************/
41     try {
42         auto id = new Id("");
43         assert(false, "Was able to create an Id from a blank value");
44     } catch(Exception e) {
45 
46     }
47 
48     try {
49         auto id = new Id("APPLE");
50         assert(false, "Was able to create an Id from a value that was too short");
51     } catch(Exception e) {
52 
53     }
54 
55     try {
56         auto id = new Id("APPLEORANGEPEARBANANAAPPLEORANGEPEARBANANAAPPLEORANGEPEARBANANA");
57         assert(false, "Was able to create an Id from a value that was too long");
58     } catch(Exception e) {
59 
60     }
61 
62     try {
63         auto id = new Id("APPLEORANGEPEARBANANAAPPLEORANGEPEAR");
64         assert(false, "Was able to create an Id from a value that had no semi colon");
65     } catch(Exception e) {
66 
67     }
68 
69     try {
70         auto id = new Id("APPLEORANGEPEARBANANAAPPLEORANGEPEAR:123456789");
71         assert(false, "Was able to create an Id without a sifficient suffix length");
72     } catch(Exception e) {
73 
74     }      
75 
76     /********************** UNIT TESTS THAT SHOULD PASS ********************/
77     try {
78         auto id = new Id("02DD6A2A:1509060290");
79     } catch(Exception e) {
80         assert(false, "Failed to create a valid Id");
81     }
82 
83     auto id = new Id("02DD6A2A:1509060290");
84     assert(id.toString() == "02DD6A2A:1509060290");
85     assert(id.getPrefix() == "02DD6A2A");
86 }