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unit tcfindnested;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, fpcunit, testregistry;
type
{ TTestFindComponent }
TTestFindComponent= class(TTestCase)
Private
R,A,B,AC,BC,D : TComponent;
Function CreateNamed(AOwner : TComponent; AName : String) : TComponent;
Procedure CheckFind(Root : TComponent; AName : String; Expected : TComponent);
Protected
procedure SetUp; override;
procedure TearDown; override;
published
procedure TestFindA;
procedure TestEmpty;
procedure TestFindB;
procedure TestFindACaseDiffer;
procedure TestFindBCaseDiffer;
procedure TestFindNonExist;
procedure TestFindNonExistSub;
procedure TestFindOwner;
procedure TestFindOwnerNameOwner;
procedure TestFindOwnerNamed;
procedure TestFindOwnerSelf;
procedure TestFindSubA;
procedure TestFindSubB;
procedure TestFindSubNoC;
end;
implementation
{$DEFINE USENEW}
{$IFDEF USENEW}
Function FindNestedComponent(Root : TComponent; APath : String; CStyle : Boolean = True) : TComponent;
Function GetNextName : String; inline;
Var
P : Integer;
CM : Boolean;
begin
P:=Pos('.',APath);
CM:=False;
If (P=0) then
begin
If CStyle then
begin
P:=Pos('->',APath);
CM:=P<>0;
end;
If (P=0) Then
P:=Length(APath)+1;
end;
Result:=Copy(APath,1,P-1);
Delete(APath,1,P+Ord(CM));
end;
Var
C : TComponent;
S : String;
begin
If (APath='') then
Result:=Nil
else
begin
Result:=Root;
While (APath<>'') And (Result<>Nil) do
begin
C:=Result;
S:=Uppercase(GetNextName);
Result:=C.FindComponent(S);
If (Result=Nil) And (S='OWNER') then
Result:=C;
end;
end;
end;
{$ENDIF}
procedure TTestFindComponent.TestEmpty;
begin
// Delphi crashes on this test, don't think we should copy that :-)
CheckFind(R,'',Nil);
end;
procedure TTestFindComponent.TestFindA;
begin
CheckFind(R,'AAAA',A);
end;
procedure TTestFindComponent.TestFindB;
begin
CheckFind(R,'BBBB',B);
end;
procedure TTestFindComponent.TestFindACaseDiffer;
begin
CheckFind(R,'aaaa',A);
end;
procedure TTestFindComponent.TestFindBCaseDiffer;
begin
CheckFind(R,'bbbb',B);
end;
procedure TTestFindComponent.TestFindNonExistSub;
begin
CheckFind(R,'aaaa.bbbb',Nil);
end;
procedure TTestFindComponent.TestFindNonExist;
begin
CheckFind(R,'qqqq',Nil);
end;
procedure TTestFindComponent.TestFindSubA;
begin
CheckFind(R,'aaaa.cccc',ac);
end;
procedure TTestFindComponent.TestFindSubB;
begin
CheckFind(R,'bbbb.cccc',bc);
end;
procedure TTestFindComponent.TestFindSubNoC;
begin
CheckFind(R,'cccc',nil);
end;
procedure TTestFindComponent.TestFindOwnerNamed;
begin
CheckFind(R,'BBBB.OWNER',D);
end;
procedure TTestFindComponent.TestFindOwner;
begin
CheckFind(B,'OWNER',D);
end;
procedure TTestFindComponent.TestFindOwnerSelf;
begin
CheckFind(A,'OWNER',A);
end;
procedure TTestFindComponent.TestFindOwnerNameOwner;
begin
CheckFind(B,'OWNER.OWNER',D);
end;
function TTestFindComponent.CreateNamed(AOwner: TComponent; AName: String
): TComponent;
begin
Result:=TComponent.Create(AOwner);
Result.Name:=AName;
end;
procedure TTestFindComponent.CheckFind(Root: TComponent; AName: String;
Expected: TComponent);
Function FN (C : TComponent): String;
begin
If (C=Nil) then
Result:='<Nil>'
else
Result:=C.GetNamePath;
end;
Var
Res : TComponent;
begin
Res:=FindNestedComponent(Root,AName);
If Res<>Expected then
Fail('Search for "'+AName+'" failed : Found "'+FN(Res)+'", expected : "'+Fn(Expected)+'"');
end;
procedure TTestFindComponent.SetUp;
begin
R:=CreateNamed(Nil,'Root');
A:=CreateNamed(R,'AAAA');
B:=CreateNamed(R,'BBBB');
AC:=CreateNamed(A,'CCCC');
BC:=CreateNamed(B,'CCCC');
D:=CreateNamed(B,'OWNER');
inherited SetUp;
end;
procedure TTestFindComponent.TearDown;
begin
FreeAndNil(R); // Will free the rest.
A:=Nil;
B:=Nil;
AC:=Nil;
BC:=Nil;
D:=Nil;
end;
initialization
RegisterTest(TTestFindComponent);
end.
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