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27 -- Check that a nonprivate tagged type declared in a package specification
28 -- may be extended with a record extension in a different package
29 -- specification, and that this record extension may in turn be extended
30 -- by a private extension in a third package.
32 -- Check that each derivative inherits the user-defined primitive
33 -- subprograms of its parent (including those that its parent inherited),
34 -- that it may override these inherited primitive subprograms, and that it
35 -- may also declare its own primitive subprograms.
37 -- Check that predefined equality operators are defined for the tagged
38 -- type and its derivatives.
40 -- Check that type conversion is defined from a type extension to its
41 -- parent, and that this parent itself may be a type extension.
44 -- Declare a root tagged type and two associated primitive subprograms
45 -- in a package specification (foundation code).
47 -- Extend the root type with a record extension in a different package
48 -- specification. Declare a new primitive subprogram for the extension,
49 -- and override one of the two inherited subprograms. Within the
50 -- overriding subprogram, utilize type conversion to call the parent's
51 -- implementation of the same subprogram. Also within the overriding
52 -- subprogram, call the new primitive subprogram and each inherited
55 -- Extend the extension with a private extension in a third package
56 -- specification. Declare a new primitive subprogram for this private
57 -- extension, and override one of the three inherited subprograms.
58 -- Within the overriding subprogram, utilize type conversion to call the
59 -- parent's implementation of the same subprogram. Also within the
60 -- overriding subprogram, call the new primitive subprogram and each
61 -- inherited subprogram.
63 -- Also in the third package, declare two operations of the private
64 -- extension which utilize aggregates and equality operators to verify
65 -- the correctness of the components.
67 -- In the main program, declare objects of the two extended types.
68 -- For each object, call the overriding subprogram, and verify the
69 -- correctness of the components by using aggregates and equality
70 -- operators, or by checking the components directly, or, for the private
71 -- extension, by calling the verification operations declared in the
75 -- This test consists of the following files:
84 -- 06 Dec 94 SAIC ACVC 2.0
85 -- 04 Jun 96 SAIC ACVC 2.1: Modified prologue.
91 with F390A00; -- Basic alert abstraction.
92 with C390A020; -- Extended alert abstraction.
93 with C390A021; -- Further extended alert abstraction.
95 use F390A00; -- Primitive operations of Alert_Type directly visible.
100 use type Ada.Calendar.Time; -- Equality/inequality ops directly visible.
103 Report.Test ("C390A02", "Primitive operation inheritance by type " &
104 "extensions: all extensions declared in different " &
105 "packages; second extension is private");
108 -- The case for type F390A00.Alert_Type is tested in C390A01.
109 -- That subtest is not repeated here.
112 LOW_ALERT_SUBTEST: ---------------------------------------------------------
115 Low_Alarm : C390A020.Low_Alert_Type; -- Extension of tagged type.
116 use C390A020; -- Primitive operations of extension directly visible.
119 -- Check "=" operator availability. Aggregate with positional
121 if not (Low_Alarm = (Default_Time, Null_Device, 0)) then
122 Report.Failed ("Wrong initial values for Low_Alert_Type");
127 -- Check component availability:
128 if Low_Alarm.Arrival_Time /= Alert_Time or
129 Low_Alarm.Display_On /= Teletype or
132 Report.Failed ("Wrong values for Low_Alert_Type after Handle");
134 end Low_Alert_Subtest;
137 -- Check intermediate display counts:
139 if F390A00.Display_Count_For /= (Null_Device => 1,
144 Report.Failed ("Wrong display counts after Low_Alert_Type");
148 MEDIUM_ALERT_SUBTEST: ------------------------------------------------------
151 Medium_Alarm : C390A021.Medium_Alert_Type; -- Priv. ext. of extension.
152 use C390A021; -- Primitive operations of extension directly visible.
154 if not C390A021.Initial_Values_Okay (Medium_Alarm) then
155 Report.Failed ("Wrong initial values for Medium_Alert_Type");
158 Handle (Medium_Alarm);
160 if C390A021.Bad_Final_Values (Medium_Alarm) then
161 Report.Failed ("Wrong values for Medium_Alert_Type after Handle");
163 end Medium_Alert_Subtest;
166 -- Check final display counts:
168 if F390A00.Display_Count_For /= (Null_Device => 2,
173 Report.Failed ("Wrong display counts after Medium_Alert_Type");