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unit tcpersistent;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, fpcunit, testregistry;
type
{ TTestTPersistent }
TTestTPersistent= class(TTestCase)
protected
Instance : TPersistent;
procedure SetUp; override;
procedure TearDown; override;
published
procedure TestPropCount;
procedure TestNamePath;
end;
{ TMyPersistent }
TMyPersistent = Class(TPersistent)
private
FMyProp: Integer;
FOwner : TPersistent;
protected
function GetOwner: TPersistent; override;
public
procedure Assign(Source: TPersistent); override;
published
Property MyProp : Integer Read FMyProp Write FMyProp;
end;
{ TTestPersistentDescendent }
TTestPersistentDescendent = class(TTestCase)
private
procedure WrongAssign;
Protected
Instance : TMyPersistent;
procedure SetUp; override;
procedure TearDown; override;
published
procedure TestPropCount;
procedure TestNamePath;
procedure TestNamePathWithOwner;
Procedure TestAssign;
Procedure TestAssignFail;
end;
implementation
uses typinfo;
procedure TTestTPersistent.TestPropCount;
Var
ACOunt : Integer;
P : Pointer;
begin
P:=Nil;
ACOunt:=GetPropList(Instance,P);
AssertEquals('Property count of TPersistence is zero',0,ACount);
end;
procedure TTestTPersistent.TestNamePath;
begin
AssertEquals('Namepath is class name if there is no owner','TPersistent',Instance.GetNamePath);
end;
procedure TTestTPersistent.SetUp;
begin
Instance:=TPersistent.Create;
end;
procedure TTestTPersistent.TearDown;
begin
FreeAndNil(Instance);
end;
{ TTestPersistentDescendent }
procedure TTestPersistentDescendent.SetUp;
begin
Instance:=TMyPersistent.Create;
end;
procedure TTestPersistentDescendent.TearDown;
begin
FreeAndNil(Instance);
end;
procedure TTestPersistentDescendent.TestPropCount;
Var
ACOunt : Integer;
P : Pointer;
begin
P:=Nil;
ACount:=GetPropList(Instance,P);
AssertEquals('Property count of TPersistence is zero',1,ACount);
Freemem(p);
end;
procedure TTestPersistentDescendent.TestNamePath;
begin
AssertEquals('Namepath is class name if there is no owner','TMyPersistent',Instance.GetNamePath);
end;
procedure TTestPersistentDescendent.TestNamePathWithOwner;
Var
AOwner : TMyPersistent;
begin
AOwner:=TMyPersistent.Create;
try
Instance.FOwner:=AOwner;
AssertEquals('Namepath is owner namepath plus class name','TMyPersistent.TMyPersistent',Instance.GetNamePath);
finally
Aowner.Free;
end;
end;
procedure TTestPersistentDescendent.TestAssign;
Var
I2 : TMyPersistent;
begin
I2:=TMyPersistent.Create;
try
I2.MyProp:=2;
Instance.Assign(I2);
AssertEquals('Property passed on during assign',2,Instance.MyProp);
finally
I2.Free;
end;
end;
procedure TTestPersistentDescendent.TestAssignFail;
begin
AssertException('Assigning the wrong class',EConvertError,@WrongAssign);
end;
procedure TTestPersistentDescendent.WrongAssign;
Var
I2 : TPersistent;
begin
I2:=TPersistent.Create;
try
Instance.Assign(I2);
finally
I2.Free;
end;
end;
{ TMyPersistent }
function TMyPersistent.GetOwner: TPersistent;
begin
Result:=FOwner;
end;
procedure TMyPersistent.Assign(Source: TPersistent);
begin
If (Source is TMyPersistent) then
FMyProp:=TMyPersistent(Source).FMyProp
else
Inherited;
end;
initialization
RegisterTests([TTestTPersistent,TTestPersistentDescendent]);
end.
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