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172 | -----------------------------------------------------------------------
-- streams.buffered.tests -- Unit tests for buffered streams
-- Copyright (C) 2010, 2011, 2017, 2018, 2019, 2020, 2021 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Ada.Strings.Wide_Wide_Unbounded;
with Ada.Streams.Stream_IO;
with Util.Test_Caller;
with Util.Streams.Texts;
with Util.Streams.Files;
package body Util.Streams.Buffered.Tests is
pragma Wide_Character_Encoding (UTF8);
use Util.Tests;
use Util.Streams.Texts;
package Caller is new Util.Test_Caller (Test, "Streams.Buffered");
procedure Add_Tests (Suite : in Util.Tests.Access_Test_Suite) is
begin
Caller.Add_Test (Suite, "Test Util.Streams.Buffered.Write, Read",
Test_Read_Write'Access);
Caller.Add_Test (Suite, "Test Util.Streams.Buffered.Write, Flush (String)",
Test_Write'Access);
Caller.Add_Test (Suite, "Test Util.Streams.Buffered.Write, Flush (Stream_Array)",
Test_Write_Stream'Access);
Caller.Add_Test (Suite, "Test Util.Streams.Buffered.Read (UTF-8)",
Test_Read_UTF_8'Access);
end Add_Tests;
-- ------------------------------
-- Write on a buffered stream and read what was written.
-- ------------------------------
procedure Test_Read_Write (T : in out Test) is
Stream : Print_Stream;
Buf : Ada.Strings.Unbounded.Unbounded_String;
begin
Stream.Initialize (Size => 4);
Stream.Write ("abcd");
Assert_Equals (T, 4, Integer (Stream.Get_Size), "Invalid size for stream");
Stream.Flush (Buf);
Assert_Equals (T, 4, Ada.Strings.Unbounded.Length (Buf), "Invalid size for string");
Assert_Equals (T, "abcd", Ada.Strings.Unbounded.To_String (Buf), "Invalid stream content");
Assert_Equals (T, 0, Integer (Stream.Get_Size), "Invalid size for stream after Flush");
end Test_Read_Write;
-- ------------------------------
-- Write on a buffer and force regular flush on a larger buffer
-- ------------------------------
procedure Test_Write (T : in out Test) is
Big_Stream : aliased Output_Buffer_Stream;
Stream : Output_Buffer_Stream;
Size : Stream_Element_Offset := 0;
Count : constant Stream_Element_Offset := 1000;
Max_Size : constant Stream_Element_Offset := (Count * (Count + 1)) / 2;
begin
Big_Stream.Initialize (Size => Natural (Max_Size));
Stream.Initialize (Output => Big_Stream'Unchecked_Access, Size => 13);
for I in 1 .. Count loop
declare
S : Stream_Element_Array (1 .. I);
begin
for J in S'Range loop
S (J) := Stream_Element (J mod 255);
end loop;
Stream.Write (S);
Stream.Flush;
Size := Size + I;
Assert_Equals (T, 1, Integer (Stream.Write_Pos), "Stream must be flushed");
-- Verify that 'Big_Stream' holds the expected number of bytes.
Assert_Equals (T, Integer (Size), Integer (Big_Stream.Write_Pos) - 1,
"Target stream has an invalid write position at "
& Stream_Element_Offset'Image (I));
end;
end loop;
end Test_Write;
-- ------------------------------
-- Write on a buffer and force regular flush on a larger buffer
-- ------------------------------
procedure Test_Write_Stream (T : in out Test) is
Big_Stream : aliased Output_Buffer_Stream;
Stream : Output_Buffer_Stream;
Size : Stream_Element_Offset := 0;
Count : constant Stream_Element_Offset := 200;
Max_Size : constant Stream_Element_Offset := 5728500;
begin
Big_Stream.Initialize (Size => Natural (Max_Size));
for Buf_Size in 1 .. 19 loop
Stream.Initialize (Output => Big_Stream'Unchecked_Access,
Size => Buf_Size);
for I in 1 .. Count loop
for Repeat in 1 .. 5 loop
declare
S : Stream_Element_Array (1 .. I);
begin
for J in S'Range loop
S (J) := Stream_Element'Val (J mod 255);
end loop;
for J in 1 .. Repeat loop
Stream.Write (S);
end loop;
Stream.Flush;
Size := Size + (I) * Stream_Element_Offset (Repeat);
Assert_Equals (T, 1, Integer (Stream.Write_Pos), "Stream must be flushed");
-- Verify that 'Big_Stream' holds the expected number of bytes.
Assert_Equals (T, Integer (Size), Integer (Big_Stream.Write_Pos) - 1,
"Target stream has an invalid write position at "
& Stream_Element_Offset'Image (I) & " with buffer "
& Natural'Image (Buf_Size) & " repeat " & Natural'Image (Repeat));
end;
end loop;
end loop;
end loop;
Assert_Equals (T, Integer (Max_Size), Integer (Big_Stream.Get_Size), "Invalid final size");
end Test_Write_Stream;
-- ------------------------------
-- Test reading UTF-8 file.
-- ------------------------------
procedure Test_Read_UTF_8 (T : in out Test) is
File : aliased Util.Streams.Files.File_Stream;
Stream : Util.Streams.Buffered.Input_Buffer_Stream;
Path : constant String := Util.Tests.Get_Path ("regtests/files/utf-8.txt");
begin
Stream.Initialize (Input => File'Unchecked_Access, Size => 1024);
File.Open (Ada.Streams.Stream_IO.In_File, Path);
declare
S : Ada.Strings.Wide_Wide_Unbounded.Unbounded_Wide_Wide_String;
Expect : constant Wide_Wide_String := "àéúíòࠀ€ಜ࠴𝄞" & Wide_Wide_Character'Val (16#0A#);
begin
Stream.Read (S);
declare
Result : constant Wide_Wide_String
:= Ada.Strings.Wide_Wide_Unbounded.To_Wide_Wide_String (S);
begin
if Expect /= Result then
T.Fail ("Invalid UTF-8 string");
end if;
end;
end;
end Test_Read_UTF_8;
end Util.Streams.Buffered.Tests;
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