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Comment:reference_tests: full-coverage test suite for reference counter
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 681c468a7d248121c8971aaabb6b1c0f067b0766
User & Date: nat on 2013-09-23 18:26:25
Other Links: manifest | tags
Context
2013-09-24
18:28
references: add storage pool formal parameters check-in: 779fe5056a user: nat tags: trunk
2013-09-23
18:26
reference_tests: full-coverage test suite for reference counter check-in: 681c468a7d user: nat tags: trunk
2013-09-22
15:29
References: new package implementing a reference counter check-in: 4306b2b680 user: nat tags: trunk
Changes

Added tests/natools-reference_tests.adb version [a304628ce9].

























































































































































































































































































































































































































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------------------------------------------------------------------------------
-- Copyright (c) 2013, 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 Natools.References.Tools;

package body Natools.Reference_Tests is

   package Tools is new Refs.Tools;

   procedure Check_Ref
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Ref : in Refs.Reference;
      Expected_Count : in Natural;
      Continue : in out Boolean);
      --  Check the given reference and report failure if any
      --  Do nothing if Continue is False

   procedure Check_Consistency
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Left, Right : in Refs.Reference;
      Continue : in out Boolean);
      --  Check consistency between two reference and report if failed
      --  Do nothing if Continue is False

   procedure Check_Count
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Expected_Count : in Integer;
      Continue : in out Boolean);
      --  Check instance count and report failure if any
      --  Do nothing if Continue is False


   --------------------
   -- Object counter --
   --------------------

   function Factory return Counter is
   begin
      Instance_Count := Instance_Count + 1;
      return Counter'(Ada.Finalization.Limited_Controlled with
         Instance_Number => Instance_Count);
   end Factory;


   overriding procedure Finalize (Object : in out Counter) is
      pragma Unreferenced (Object);
   begin
      Instance_Count := Instance_Count - 1;
   end Finalize;



   ------------------------
   -- Helper subprograms --
   ------------------------

   procedure Check_Consistency
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Left, Right : in Refs.Reference;
      Continue : in out Boolean) is
   begin
      if Continue and then not Tools.Is_Consistent (Left, Right) then
         NT.Item (Report, Name, NT.Fail);
         NT.Info (Report, "Inconsistent references found");
         Continue := False;
      end if;
   end Check_Consistency;


   procedure Check_Count
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Expected_Count : in Integer;
      Continue : in out Boolean) is
   begin
      if not Continue then
         return;
      end if;

      if Instance_Count < 0 then
         NT.Item (Report, Name, NT.Fail);
         NT.Info
           (Report,
            "Invalid Instance_Count " & Integer'Image (Instance_Count));
         Continue := False;

      elsif Instance_Count /= Expected_Count then
         NT.Item (Report, Name, NT.Fail);
         NT.Info (Report, "Unexpected Instance_Count"
           & Integer'Image (Instance_Count)
           & " instead of"
           & Integer'Image (Expected_Count));
         Continue := False;
      end if;
   end Check_Count;


   procedure Check_Ref
     (Report : in out NT.Reporter'Class;
      Name : in String;
      Ref : in Refs.Reference;
      Expected_Count : in Natural;
      Continue : in out Boolean)
   is
      Actual_Count : constant Integer := Tools.Count (Ref);
   begin
      if not Continue then
         return;
      end if;

      if not Tools.Is_Valid (Ref) then
         NT.Item (Report, Name, NT.Fail);
         NT.Info (Report, "Invalid internal state for reference");
         Continue := False;

      elsif Actual_Count /= Expected_Count then
         NT.Item (Report, Name, NT.Fail);
         NT.Info (Report,
           "Unexpected reference count"
           & Natural'Image (Actual_Count)
           & " instead of"
           & Natural'Image (Expected_Count));
         Continue := False;
      end if;
   end Check_Ref;



   --------------------
   -- Invidual tests --
   --------------------

   procedure Test_Data_Access (Report : in out NT.Reporter'Class) is
      Argument_Count : Natural;
      Result : Boolean;

      procedure Check (Self : in Counter);
      procedure Set (Self : in out Counter);

      procedure Check (Self : in Counter) is
      begin
         Result := Argument_Count = Self.Instance_Number;
         Argument_Count := Self.Instance_Number;
      end Check;

      procedure Set (Self : in out Counter) is
      begin
         Self.Instance_Number := Argument_Count;
      end Set;

      Name : constant String := "Data access";
   begin
      declare
         Ref_1 : Refs.Reference := Refs.Create (Factory'Access);
         Ref_2 : Refs.Reference;
      begin
         Ref_2.Replace (Factory'Access);
         Argument_Count := 42;
         Ref_2.Update (Set'Access);
         Ref_1.Update.Data.Instance_Number := 18;

         Argument_Count := 18;
         Ref_1.Query (Check'Access);
         if not Result then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Stored 18, retrieved"
              & Integer'Image (Argument_Count));
            return;
         end if;

         Ref_1.Reset;

         Argument_Count := Ref_2.Query.Data.Instance_Number;
         if Argument_Count /= 42 then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Stored 42, retrieved"
              & Integer'Image (Argument_Count));
            return;
         end if;
      end;

      NT.Item (Report, Name, NT.Success);
   exception
      when Error : others => NT.Report_Exception (Report, Name, Error);
   end Test_Data_Access;


   procedure Test_Double_Finalize (Report : in out NT.Reporter'Class) is
      Name : constant String := "Double finalize";
      Initial_Count : constant Integer := Instance_Count;
      Continue : Boolean := True;
   begin
      declare
         Ref : Refs.Reference := Refs.Create (Factory'Access);
      begin
         Ref.Finalize;
      end;

      Check_Count (Report, Name, Initial_Count, Continue);

      if Continue then
         NT.Item (Report, Name, NT.Success);
      end if;
   exception
      when Error : others => NT.Report_Exception (Report, Name, Error);
   end Test_Double_Finalize;


   procedure Test_Instance_Counts (Report : in out NT.Reporter'Class) is
      Name : constant String := "Instance counts";
      Initial_Count : constant Integer := Instance_Count;
      Continue : Boolean := True;
   begin
      declare
         procedure Check (Count_0, Count_1, Count_2, Delta_I : in Integer);

         Ref_0 : Refs.Reference := Refs.Create (Factory'Access);
         Ref_1, Ref_2 : Refs.Reference;

         procedure Check (Count_0, Count_1, Count_2, Delta_I : in Integer) is
         begin
            Check_Ref (Report, Name, Ref_0, Count_0, Continue);
            Check_Ref (Report, Name, Ref_1, Count_1, Continue);
            Check_Ref (Report, Name, Ref_2, Count_2, Continue);
            Check_Consistency (Report, Name, Ref_0, Ref_1, Continue);
            Check_Consistency (Report, Name, Ref_1, Ref_2, Continue);
            Check_Consistency (Report, Name, Ref_2, Ref_0, Continue);
            Check_Count (Report, Name, Initial_Count + Delta_I, Continue);
         end Check;
      begin
         Check (1, 0, 0, 1);

         if Continue then
            Ref_1 := Refs.Create (Factory'Access);
         end if;

         Check (1, 1, 0, 2);

         if Continue then
            Ref_2 := Ref_0;
         end if;

         Check (2, 1, 2, 2);

         if Continue then
            Ref_1 := Ref_0;
         end if;

         Check (3, 3, 3, 1);

         if Continue then
            Ref_2.Replace (Factory'Access);
         end if;

         Check (2, 2, 1, 2);

         if Continue then
            Ref_1.Reset;
            Ref_0 := Ref_1;
         end if;

         Check (0, 0, 1, 1);
      end;

      Check_Count (Report, Name, Initial_Count, Continue);

      if Continue then
         NT.Item (Report, Name, NT.Success);
      end if;
   exception
      when Error : others => NT.Report_Exception (Report, Name, Error);
   end Test_Instance_Counts;


   procedure Test_Reference_Counts (Report : in out NT.Reporter'Class) is
      Name : constant String := "Reference counts";
      Initial_Count : constant Integer := Instance_Count;
      Continue : Boolean := True;
   begin
      declare
         procedure Check (Count_0, Count_1, Count_2 : in Integer);

         Ref_0 : constant Refs.Reference := Refs.Create (Factory'Access);
         Ref_1 : Refs.Reference := Ref_0;
         Ref_2 : Refs.Reference;

         procedure Check (Count_0, Count_1, Count_2 : in Integer) is
         begin
            Check_Ref (Report, Name, Ref_0, Count_0, Continue);
            Check_Ref (Report, Name, Ref_1, Count_1, Continue);
            Check_Ref (Report, Name, Ref_2, Count_2, Continue);
            Check_Consistency (Report, Name, Ref_0, Ref_1, Continue);
            Check_Consistency (Report, Name, Ref_1, Ref_2, Continue);
            Check_Consistency (Report, Name, Ref_2, Ref_0, Continue);
         end Check;
      begin
         Check (2, 2, 0);

         if Continue then
            Ref_2 := Ref_0;
         end if;

         Check (3, 3, 3);

         if Continue then
            Refs.Reset (Ref_1);
         end if;

         Check (2, 0, 2);
      end;

      Check_Count (Report, Name, Initial_Count, Continue);

      if Continue then
         NT.Item (Report, Name, NT.Success);
      end if;
   exception
      when Error : others => NT.Report_Exception (Report, Name, Error);
   end Test_Reference_Counts;


   procedure Test_Reference_Tests (Report : in out NT.Reporter'Class) is
      Name : constant String := "Reference tests";
      Initial_Count : constant Integer := Instance_Count;
      Continue : Boolean := True;
   begin
      declare
         use type Refs.Reference;

         Ref : Refs.Reference;
         Base : constant Refs.Reference := Refs.Create (Factory'Access);
      begin
         if not Ref.Is_Empty then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Default reference is not empty");
            return;
         end if;

         if Base.Is_Empty then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Created reference is empty");
            return;
         end if;

         Ref.Replace (Factory'Access);
         if Ref.Is_Empty then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Replaced reference is empty");
            return;
         end if;

         if Ref = Base then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Unexpected equality between Ref and Base");
            return;
         end if;

         Ref := Base;
         if Ref /= Base then
            NT.Item (Report, Name, NT.Fail);
            NT.Info (Report, "Unexpected inequality between Ref and Base");
            return;
         end if;
      end;

      Check_Count (Report, Name, Initial_Count, Continue);

      if Continue then
         NT.Item (Report, Name, NT.Success);
      end if;
   exception
      when Error : others => NT.Report_Exception (Report, Name, Error);
   end Test_Reference_Tests;



   ---------------------
   -- Test everything --
   ---------------------

   procedure All_Tests (Report : in out NT.Reporter'Class) is
   begin
      Test_Data_Access (Report);
      Test_Double_Finalize (Report);
      Test_Instance_Counts (Report);
      Test_Reference_Counts (Report);
      Test_Reference_Tests (Report);
   end All_Tests;

end Natools.Reference_Tests;

Added tests/natools-reference_tests.ads version [83c515b4b0].

























































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------------------------------------------------------------------------------
-- Copyright (c) 2013, 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.           --
------------------------------------------------------------------------------

------------------------------------------------------------------------------
-- Natools.Reference_Tests is a test suite for Natools.References           --
-- reference-counted object holder.                                         --
------------------------------------------------------------------------------

with Natools.Tests;

private with Ada.Finalization;
--  private with GNAT.Debug_Pools;
private with Natools.References;

package Natools.Reference_Tests is

   package NT renames Natools.Tests;

   procedure All_Tests (Report : in out NT.Reporter'Class);

   procedure Test_Data_Access (Report : in out NT.Reporter'Class);
   procedure Test_Double_Finalize (Report : in out NT.Reporter'Class);
   procedure Test_Instance_Counts (Report : in out NT.Reporter'Class);
   procedure Test_Reference_Counts (Report : in out NT.Reporter'Class);
   procedure Test_Reference_Tests (Report : in out NT.Reporter'Class);

private

   Instance_Count : Integer := 0;

   type Counter is new Ada.Finalization.Limited_Controlled with record
      Instance_Number : Natural := 0;
   end record;

   function Factory return Counter;
   overriding procedure Finalize (Object : in out Counter);

--   Pool : GNAT.Debug_Pools.Debug_Pool;

   package Refs is new Natools.References (Counter);
--     (Counter, System.Pool_Global.Global_Pool_Object, Pool);

end Natools.Reference_Tests;

Added tests/natools-references-tools.adb version [a1e1a8435d].









































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------------------------------------------------------------------------------
-- Copyright (c) 2013, 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.           --
------------------------------------------------------------------------------

package body Natools.References.Tools is

   function Is_Consistent (Left, Right : Reference) return Boolean is
   begin
      return (Left.Data = Right.Data) = (Left.Count = Right.Count);
   end Is_Consistent;


   function Is_Valid (Ref : Reference) return Boolean is
   begin
      return (Ref.Data = null) = (Ref.Count = null);
   end Is_Valid;


   function Count (Ref : Reference) return Natural is
   begin
      if Ref.Count /= null then
         return Natural (Ref.Count.all);
      else
         return 0;
      end if;
   end Count;

end Natools.References.Tools;

Added tests/natools-references-tools.ads version [a4216fce60].



































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------------------------------------------------------------------------------
-- Copyright (c) 2013, 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.           --
------------------------------------------------------------------------------

------------------------------------------------------------------------------
-- Natools.References.Tools exposes subprograms to peek into private parts  --
-- of Natools.Reference, for debug or testing purposes.                     --
------------------------------------------------------------------------------

generic
package Natools.References.Tools is

   function Is_Consistent (Left, Right : Reference) return Boolean;
      --  Check that counter and data equality are consistent

   function Is_Valid (Ref : Reference) return Boolean;
      --  Check consistency for internal state

   function Count (Ref : Reference) return Natural;
      --  Return the number of references to held object

end Natools.References.Tools;

Modified tests/test_all.adb from [2d7c0309a9] to [33dccb6b64].

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-- Test_All is a binary gathering all tests from Natools components. --
-----------------------------------------------------------------------

with Ada.Command_Line;
with Ada.Text_IO;
with Natools.Chunked_Strings.Tests;
with Natools.Getopt_Long_Tests;
with Natools.Reference_Tests;
with Natools.Tests.Text_IO;

procedure Test_All is
   package Uneven_Chunked_Strings is new Natools.Chunked_Strings
     (Default_Allocation_Unit => 7,
      Default_Chunk_Size      => 15);
   package Uneven_Chunked_Strings_Tests is new Uneven_Chunked_Strings.Tests;
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   Report.Section ("Chunked_String with single allocation unit");
   Single_Chunked_Strings_Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("Getopt_Long");
   Natools.Getopt_Long_Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("References");
   Natools.Reference_Tests.All_Tests (Report);
   Report.End_Section;

   Natools.Tests.Text_IO.Print_Results (Report.Total_Results);

   declare
      Results : constant Natools.Tests.Result_Summary := Report.Total_Results;
   begin
      if Results (Natools.Tests.Fail) > 0 or