1-- C341A04.A
2 --
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24--*
25 --
26 -- OBJECTIVE:
27 --      Check that class-wide objects can be initialized using allocation.
28 --
29 -- TEST DESCRIPTION:
30 --      Declare access types that refer to class-wide types, one with basis
31 --      of the root type, another with basis of a type extended from the root.
32 --      Declare objects of these access types, and allocate class-wide
33 --      objects, initialized to values of specific types within the particular
34 --      classes.
35 --
36 --      The particular root and extended types used in this abstraction are
37 --      defined in foundation code (F341A00.A), and are graphically displayed
38 --      as follows:
39 --
40 --           package Bank
41 --              type Account
42 --                  |
43 --                  |
44 --                  |
45 --               package Checking
46 --                  type Account
47 --                      |
48 --                      |
49 --                      |
50 --                   package Interest_Checking
51 --                          type Account
52 --
53 -- TEST FILES:
54 --      This test depends on the following foundation code:
55 --
56 --         F341A00.A
57 --
58 --      The following files comprise this test:
59 --
60 --      => C341A04.A
61 --
62 --
63-- CHANGE HISTORY:
64--      06 Dec 94   SAIC    ACVC 2.0
65--
66 --!
67
68 with F341A00_0;            -- package Bank
69 with F341A00_1;            -- package Checking
70 with F341A00_2;            -- package Interest_Checking
71 with Report;
72
73 procedure C341A04 is
74
75    package Bank              renames F341A00_0;
76    package Checking          renames F341A00_1;
77    package Interest_Checking renames F341A00_2;
78
79    use type Bank.Dollar_Amount;
80
81    Max_Accts    : constant := 3;
82    Bank_Balance : Bank.Dollar_Amount := 0.00;
83
84    -- Define access types referring to class of types rooted at
85    -- Bank.Account (root).
86
87    type Bank_Account_Pointer is access Bank.Account'Class;
88
89    --
90    -- Define class-wide objects, initializing them through allocation.
91    --
92
93    -- Initialized to specific type that is basis of class.
94    Bank_Acct : Bank_Account_Pointer :=
95      new Bank.Account'(Current_Balance => 10.00);
96
97    -- Initialized to specific type that has been extended from the basis
98    -- of the class.
99    Checking_Acct : Bank_Account_Pointer :=
100      new Checking.Account'(Current_Balance => 100.00,
101                            Overdraft_Fee   =>  10.00);
102
103    -- Initialized to specific type that has been twice extended from the
104    -- basis of the class.
105    IC_Acct : Bank_Account_Pointer :=
106      new Interest_Checking.Account'(Current_Balance => 1000.00,
107                                     Overdraft_Fee   =>   10.00,
108                                     Rate            =>    0.030);
109
110    -- Declare and initialize array of pointers to objects of
111    -- Bank.Account'Class.
112
113    Accounts : array (1 .. Max_Accts) of Bank_Account_Pointer :=
114      (Bank_Acct, Checking_Acct, IC_Acct);
115
116
117    -- Audit will process any account object within Bank.Account'Class.
118
119    function Audit (Ptr : Bank_Account_Pointer) return Bank.Dollar_Amount is
120    begin
121       return (Ptr.Current_Balance);
122    end Audit;
123
124
125 begin  -- C341A04
126
127    Report.Test ("C341A04", "Check that class-wide objects were " &
128                            "successfully initialized using allocation" );
129
130    for i in 1 .. Max_Accts loop
131       Bank_Balance := Bank_Balance + Audit (Accounts(i));
132    end loop;
133
134    if Bank_Balance /= 1110.00 then
135       Report.Failed ("Failed class-wide object allocation");
136    end if;
137
138    Report.Result;
139
140 end C341A04;
141
142