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{
Copyright 2004-2014 Michalis Kamburelis.
This file is part of "Castle Game Engine".
"Castle Game Engine" is free software; see the file COPYING.txt,
included in this distribution, for details about the copyright.
"Castle Game Engine" 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.
----------------------------------------------------------------------------
}
unit TestCastleClassUtils;
interface
uses Classes, SysUtils, fpcunit, testutils, testregistry, CastleUtils,
CastleClassUtils, FGL;
type
TStreamFromStreamFunc = function(Stream: TStream): TPeekCharStream of object;
TTestCastleClassUtils = class(TTestCase)
private
BufferSize: LongWord;
procedure TestIndirectReadStream(
StreamFromStreamFunc: TStreamFromStreamFunc);
function StreamPeekCharFromStream(Stream: TStream): TPeekCharStream;
function BufferedReadStreamFromStream(Stream: TStream): TPeekCharStream;
published
procedure TestStreamPeekChar;
procedure TestBufferedReadStream;
procedure TestObjectsListSort;
procedure TestNotifyEventArray;
end;
TFoo = class
constructor Create(AI: Integer; AnS: string);
public
I: Integer;
S: string;
end;
TFooList = class(specialize TFPGObjectList<TFoo>)
public
procedure SortFoo;
end;
implementation
{ TFoo, TFoosList ------------------------------------------------------------ }
constructor TFoo.Create(AI: Integer; AnS: string);
begin
I := AI;
S := AnS;
end;
function IsFooSmaller(const A, B: TFoo): Integer;
begin
Result := A.I - B.I;
end;
procedure TFooList.SortFoo;
begin
Sort(@IsFooSmaller);
end;
{ TTestCastleClassUtils ------------------------------------------------------- }
procedure TTestCastleClassUtils.TestIndirectReadStream(
StreamFromStreamFunc: TStreamFromStreamFunc);
var
SStream: TStringStream;
ReaderStream: TPeekCharStream;
Buf: array[0..2]of Byte;
begin
SStream := TStringStream.Create(#1#2#3#4#5#6#7#8#9#10#11#12);
try
SStream.Position := 0;
ReaderStream := StreamFromStreamFunc(SStream);
try
AssertTrue(ReaderStream.Size = 12);
AssertTrue(ReaderStream.PeekChar = 1);
AssertTrue(ReaderStream.PeekChar = 1);
AssertTrue(ReaderStream.PeekChar = 1);
AssertTrue(ReaderStream.ReadChar = 1);
AssertTrue(ReaderStream.PeekChar = 2);
AssertTrue(ReaderStream.ReadChar = 2);
AssertTrue(ReaderStream.ReadChar = 3);
AssertTrue(ReaderStream.ReadChar = 4);
AssertTrue(ReaderStream.ReadUpto([#8, #9, #10]) = #5#6#7);
AssertTrue(ReaderStream.Position = 7);
AssertTrue(ReaderStream.ReadChar = 8);
AssertTrue(ReaderStream.Position = 8);
ReaderStream.ReadBuffer(Buf, 3);
AssertTrue(Buf[0] = 9);
AssertTrue(Buf[1] = 10);
AssertTrue(Buf[2] = 11);
AssertTrue(ReaderStream.PeekChar = 12);
AssertTrue(ReaderStream.ReadChar = 12);
AssertTrue(ReaderStream.Read(Buf, 1) = 0);
AssertTrue(ReaderStream.PeekChar = -1);
AssertTrue(ReaderStream.Read(Buf, 1) = 0);
finally ReaderStream.Free end;
finally SStream.Free end;
end;
function TTestCastleClassUtils.StreamPeekCharFromStream(Stream: TStream):
TPeekCharStream;
begin
Result := TSimplePeekCharStream.Create(Stream, false);
end;
procedure TTestCastleClassUtils.TestStreamPeekChar;
begin
TestIndirectReadStream(@StreamPeekCharFromStream);
end;
function TTestCastleClassUtils.BufferedReadStreamFromStream(Stream: TStream):
TPeekCharStream;
begin
Result := TBufferedReadStream.Create(Stream, false, BufferSize);
end;
procedure TTestCastleClassUtils.TestBufferedReadStream;
var i: Integer;
begin
for i := 1 to 20 do
begin
BufferSize := i;
TestIndirectReadStream(@BufferedReadStreamFromStream);
end;
end;
procedure TTestCastleClassUtils.TestObjectsListSort;
var
L: TFooList;
begin
L := TFooList.Create(true);
try
L.Add(TFoo.Create(123, 'abc'));
L.Add(TFoo.Create(-5, 'ZZZ'));
L.Add(TFoo.Create(65, 'zuzanna'));
L.SortFoo;
AssertTrue(L.Count = 3);
AssertTrue(L[0].I = -5);
AssertTrue(L[1].I = 65);
AssertTrue(L[2].I = 123);
finally FreeAndNil(L) end;
end;
type
TObj = class
procedure Dummy(Sender: TObject);
end;
procedure TObj.Dummy(Sender: TObject);
begin
end;
procedure TTestCastleClassUtils.TestNotifyEventArray;
{ There's a trap when implementing lists of methods: normal comparison operator
is nonsense for methods, it compares only the code pointer.
See http://bugs.freepascal.org/view.php?id=11868 ,
http://bugs.freepascal.org/view.php?id=9228 .
Make sure our TNotifyEventList doesn't have this problem. }
var
A: TNotifyEventList;
O1, O2, O3: TObj;
begin
A := TNotifyEventList.Create;
try
O1 := TObj.Create;
O2 := TObj.Create;
O3 := TObj.Create;
AssertTrue(A.IndexOf(@O1.Dummy) = -1);
AssertTrue(A.IndexOf(@O2.Dummy) = -1);
AssertTrue(A.IndexOf(@O3.Dummy) = -1);
A.Add(@O1.Dummy);
AssertTrue(A.IndexOf(@O1.Dummy) = 0);
AssertTrue(A.IndexOf(@O2.Dummy) = -1);
AssertTrue(A.IndexOf(@O3.Dummy) = -1);
A.Add(@O2.Dummy);
AssertTrue(A.IndexOf(@O1.Dummy) = 0);
AssertTrue(A.IndexOf(@O2.Dummy) = 1);
AssertTrue(A.IndexOf(@O3.Dummy) = -1);
A.Remove(@O1.Dummy);
AssertTrue(A.IndexOf(@O1.Dummy) = -1);
AssertTrue(A.IndexOf(@O2.Dummy) = 0);
AssertTrue(A.IndexOf(@O3.Dummy) = -1);
FreeAndNil(O1);
FreeAndNil(O2);
FreeAndNil(O3);
finally FreeAndNil(A) end;
end;
initialization
RegisterTest(TTestCastleClassUtils);
end.
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