Natools

------------------------------------------------------------------------------
-- Copyright (c) 2015-2017, Natacha Porté                                   --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           --
------------------------------------------------------------------------------

with Ada.Strings.Unbounded;
with Natools.Smaz.Original;

package body Natools.Smaz.Tests is

   function Dict_Without_VLV return Dictionary;

   function Image (S : Ada.Streams.Stream_Element_Array) return String;

   procedure Roundtrip_Test
     (Test : in out NT.Test;
      Dict : in Dictionary;
      Decompressed : in String;
      Compressed : in Ada.Streams.Stream_Element_Array);


   ------------------------------
   -- Local Helper Subprograms --
   ------------------------------

   function Dict_Without_VLV return Dictionary is
   begin
      return Dict : Dictionary := Original.Dictionary do
         Dict.Variable_Length_Verbatim := False;
      end return;
   end Dict_Without_VLV;


   function Image (S : Ada.Streams.Stream_Element_Array) return String is
      use Ada.Strings.Unbounded;
      Result : Unbounded_String;
   begin
      for I in S'Range loop
         Append (Result, Ada.Streams.Stream_Element'Image (S (I)));

   -------------------------
   -- Complete Test Suite --
   -------------------------

   procedure All_Tests (Report : in out NT.Reporter'Class) is
   begin
      Sample_Strings (Report);
      Sample_Strings_Without_VLV (Report);
   end All_Tests;



   ----------------------
   -- Individual Tests --
   ----------------------

      Roundtrip_Test (Test, Original.Dictionary,
         ": : : :",
         (255, 6, 58, 32, 58, 32, 58, 32, 58));
   exception
      when Error : others => Test.Report_Exception (Error);
   end Sample_Strings;


   procedure Sample_Strings_Without_VLV (Report : in out NT.Reporter'Class) is
      Test : NT.Test
        := Report.Item ("Roundtrip on sample strings without VLV");
      Dict : constant Dictionary := Dict_Without_VLV;
   begin
      Roundtrip_Test (Test, Dict,
         "This is a small string",
         (255, 84, 76, 56, 172, 62, 173, 152, 62, 195, 70));
      Roundtrip_Test (Test, Dict,
         "foobar",
         (220, 6, 90, 79));
      Roundtrip_Test (Test, Dict,
         "the end",
         (1, 171, 61));
      Roundtrip_Test (Test, Dict,
         "not-a-g00d-Exampl333",
         (132, 204, 4, 204, 59, 254, 48, 48, 24, 204, 255, 69, 250, 4, 45,
           60, 22, 254, 51, 51, 255, 51));
      Roundtrip_Test (Test, Dict,
         "Smaz is a simple compression library",
         (255, 83, 173, 219, 56, 172, 62, 226, 60, 87, 161, 45, 60, 33, 166,
           107, 205, 8, 90, 130, 12, 83));
      Roundtrip_Test (Test, Dict,
         "Nothing is more difficult, and therefore more precious, "
           & "than to be able to decide",
         (255, 78, 223, 102, 99, 116, 45, 42, 11, 129, 44, 44, 131, 38, 22, 3,
           148, 63, 210, 68, 11, 45, 42, 11, 60, 33, 28, 144, 164, 36, 203,
           143, 96, 92, 25, 90, 87, 82, 165, 215, 237, 2));
      Roundtrip_Test (Test, Dict,
         "this is an example of what works very well with smaz",
         (155, 56, 172, 41, 2, 250, 4, 45, 60, 87, 32, 159, 135, 65, 42, 255,
           107, 23, 231, 71, 145, 152, 243, 227, 10, 173, 219));
      Roundtrip_Test (Test, Dict,
         "1000 numbers 2000 will 10 20 30 compress very little",
         (254, 49, 48, 254, 48, 48, 236, 38, 45, 92, 221, 0, 254, 50, 48,
           254, 48, 48, 243, 152, 0, 254, 49, 48, 0, 254, 50, 48, 0, 254, 51,
           48, 161, 45, 60, 33, 166, 0, 231, 71, 151, 3, 3, 87));
      Roundtrip_Test (Test, Dict,
         ": : : :",
         (254, 58, 32, 254, 58, 32, 254, 58, 32, 255, 58));
   exception
      when Error : others => Test.Report_Exception (Error);
   end Sample_Strings_Without_VLV;

end Natools.Smaz.Tests;