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167 | -- Abstract :
--
-- See spec.
--
-- Copyright (C) 2003, 2005, 2009, 2010, 2012, 2014, 2015, 2016 Stephen Leake. All Rights Reserved.
--
-- SAL is free software; you can redistribute it and/or modify it
-- under terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2, or (at your option) any
-- later version. SAL is distributed in the hope that it will be
-- useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- General Public License for more details. You should have received a
-- copy of the GNU General Public License distributed with SAL; see
-- file COPYING. If not, write to the Free Software Foundation, 59
-- Temple Place - Suite 330, Boston, MA 02111-1307, USA.
pragma License (GPL);
with Ada.Float_Text_IO;
with Ada.Numerics.Elementary_Functions;
with AUnit.Assertions;
with SAL.Gen_Stats.Gen_Image;
package body Test_Stats is
Default_Mean_Threshold : constant := 10.0e-5;
Default_SD_Threshold : constant := 2.0e-6;
package Stats is new SAL.Gen_Stats (Float, Ada.Numerics.Elementary_Functions);
package Stats_Image is new Stats.Gen_Image (Ada.Float_Text_IO);
procedure Check
(Message : in String;
Computed : in Float;
Expected : in Float;
Threshold : in Float)
is begin
AUnit.Assertions.Assert
(abs (Computed - Expected) < Threshold,
Message &
" failed; expected " & Float'Image (Expected) &
" got " & Float'Image (Computed));
end Check;
procedure Check
(Message : in String;
Computed : in Stats.Stats_Type;
Mean : in Float;
SD : in Float;
Min : in Float;
Max : in Float;
Mean_Threshold : in Float := Default_Mean_Threshold;
SD_Threshold : in Float := Default_SD_Threshold)
is
Computed_Mean : constant Float := Stats.Mean (Computed);
Computed_SD : constant Float := Stats.Standard_Deviation (Computed);
Computed_Min : constant Float := Stats.Min (Computed);
Computed_Max : constant Float := Stats.Max (Computed);
begin
Check (Message & ".Mean", Computed_Mean, Mean, Mean_Threshold);
Check (Message & ".SD", Computed_SD, SD, SD_Threshold);
Check (Message & ".Min", Computed_Min, Min, Mean_Threshold);
Check (Message & ".Max", Computed_Max, Max, Mean_Threshold);
end Check;
procedure Check
(Message : in String;
Computed : in String;
Expected : in String)
is begin
AUnit.Assertions.Assert
(Computed = Expected,
Message &
" failed; expected '" & Expected &
"' got '" & Computed);
end Check;
procedure Test_Stats (T : in out AUnit.Test_Cases.Test_Case'Class)
is
pragma Unreferenced (T);
use Stats;
Stats : Stats_Type;
begin
for I in 1 .. 10 loop
if I <= 5 then
Accumulate (Stats, 1.1);
else
Accumulate (Stats, 0.9);
end if;
end loop;
Check ("case_one", Stats, Mean => 1.0, SD => 0.105411, Min => 0.9, Max => 1.1);
declare
Image : constant String := Stats_Image.Image
(Display (Stats),
Mean_Fore => 1,
Mean_Aft => 1,
Mean_Exp => 0,
SD_Fore => 1,
SD_Aft => 4,
SD_Exp => 3);
begin
Check ("case_one.image", Image, "( 1.0, 1.0541E-01, 0.9, 1.1)");
end;
Reset (Stats);
for I in 1 .. 10 loop
if I <= 5 then
Accumulate (Stats, -10.1);
else
Accumulate (Stats, -9.9);
end if;
end loop;
declare
Image : String := Stats_Image.Image
(Display (Stats),
Mean_Fore => 1,
Mean_Aft => 1,
Mean_Exp => 0,
SD_Fore => 1,
SD_Aft => 4,
SD_Exp => 3);
begin
-- Last digit changes between 32 and 64 bit compilers; mask it.
Image (13) := 'M';
Check ("overflow.image", Image, "(****, 1.053ME-01, ****, -9.9)");
-- Value correct for GNAT 7.1.2
end;
declare
Image : String := Stats_Image.Image
(Display (Stats),
Mean_Fore => 2,
Mean_Aft => 2,
Mean_Exp => 0,
SD_Fore => 1,
SD_Aft => 4,
SD_Exp => 3);
begin
-- Last digit changes between 32 and 64 bit compilers; mask it.
Image (15) := 'M';
Check ("case_two.image", Image, "(-10.00, 1.053ME-01, -10.10, -9.90)");
-- Value correct for GNAT 7.1.2
end;
end Test_Stats;
----------
-- Public routines
overriding function Name (T : Test_Case) return AUnit.Message_String
is
pragma Unreferenced (T);
begin
return new String'("Test_Math_Float_Stats");
end Name;
overriding procedure Register_Tests (T : in out Test_Case)
is
use AUnit.Test_Cases.Registration;
begin
Register_Routine (T, Test_Stats'Access, "Test_Stats");
end Register_Tests;
end Test_Stats;
|