xtool/contrib/DelphiEncryptionCompendium/Unit Tests/Tests/TestDECFormatBase.pas

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  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License. A copy of this licence is found in the root directory of
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    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing,
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  specific language governing permissions and limitations
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*****************************************************************************}

{$M+} // DUnitX would add it anyway
unit TestDECFormatBase;

interface

// Needs to be included before any other statements
{$INCLUDE TestDefines.inc}

uses
  {$IFDEF DUnitX}
  DUnitX.TestFramework,DUnitX.DUnitCompatibility,
  {$ELSE}
  TestFramework,
  {$ENDIF}
  System.SysUtils, System.Classes,
  DECUtil, DECBaseClass, DECFormatBase;

type
  // Test methods for class TFormat_Copy
  {$IFDEF DUnitX} [TestFixture] {$ENDIF}
  TestTFormat = class(TTestCase)
  strict private
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestClassByInvalidIdentityHelper;
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestFormatByInvalidIdentityHelper;
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestClassByInvalidNameHelperEmpty;
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestClassByInvalidNameHelperWrong;
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestFormatByInvalidNameHelperEmpty;
    /// <summary>
    ///   Method needed because CheckException only allows procedure methods and
    ///   not functions as parameter
    /// </summary>
    procedure TestFormatByInvalidNameHelperWrong;
  public
    procedure SetUp; override;
    procedure TearDown; override;
  published
    procedure TestUpCaseBinary;
    procedure TestTableFindBinary;
    procedure TestIsClassListCreated;

    procedure TestClassByName;
    procedure TestClassByInvalidName;
    procedure TestClassByIdentity;
    procedure TestClassByInvalidIdentity;
    procedure TestValidFormat;
    procedure TestFormatByName;
    procedure TestFormatByInvalidName;
    procedure TestFormatByIdentity;
    procedure TestFormatByInvalidIdentity;
  end;

  // Test methods for class TFormat_Copy
  {$IFDEF DUnitX} [TestFixture] {$ENDIF}
  TestTFormat_Copy = class(TTestCase)
  strict private
    FFormat_Copy: TFormat_Copy;
  private
  public
    procedure SetUp; override;
    procedure TearDown; override;
  published
    procedure TestEncodeBytes;
    procedure TestEncodeRawByteString;
    procedure TestEncodeTypeless;
    procedure TestDecodeBytes;
    procedure TestDecodeRawByteString;
    procedure TestDecodeTypeless;
    procedure TestIsValidTypeless;
    procedure TestIsValidTBytes;
    procedure TestIsValidRawByteString;
  end;

implementation

uses
  DECFormat;

type
  TestRecTableFindBinary = record
    Value: Byte;
    Table: RawByteString;
    Len  : Integer;
    Index: Integer;
  end;

procedure TestTFormat_Copy.SetUp;
begin
  FFormat_Copy := TFormat_Copy.Create;
end;

procedure TestTFormat_Copy.TearDown;
begin
  FFormat_Copy.Free;
  FFormat_Copy := nil;
end;

procedure TestTFormat_Copy.TestDecodeBytes;
var
  SrcBuf,
  DestBuf : TBytes;
begin
  SrcBuf  := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  DestBuf := TFormat_Copy.Decode(SrcBuf);

  CheckEquals('1234567890abcdefghijklmnopqrstuvwxyz@!$',
              string(BytesToRawString(DestBuf)));
end;

procedure TestTFormat_Copy.TestDecodeRawByteString;
var
  SrcString,
  DestString : RawByteString;
begin
  SrcString  := '1234567890abcdefghijklmnopqrstuvwxyz@!$';
  DestString := TFormat_Copy.Decode(SrcString);

  CheckEquals(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'),
              DestString);
end;

procedure TestTFormat_Copy.TestDecodeTypeless;
var
  SrcBuf     : TBytes;
  DestString : RawByteString;
begin
  SrcBuf     := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  DestString := TFormat_Copy.Encode(SrcBuf[0], length(SrcBuf));

  CheckEquals(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'),
              DestString);
end;

procedure TestTFormat_Copy.TestEncodeBytes;
var
  SrcBuf,
  DestBuf : TBytes;
begin
  SrcBuf  := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  DestBuf := TFormat_Copy.Encode(SrcBuf);

  CheckEquals('1234567890abcdefghijklmnopqrstuvwxyz@!$',
              string(BytesToRawString(DestBuf)));
end;

procedure TestTFormat_Copy.TestEncodeRawByteString;
var
  SrcString,
  DestString : RawByteString;
begin
  SrcString  := '1234567890abcdefghijklmnopqrstuvwxyz@!$';
  DestString := TFormat_Copy.Encode(SrcString);

  CheckEquals(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'),
              DestString);
end;

procedure TestTFormat_Copy.TestEncodeTypeless;
var
  SrcBuf     : TBytes;
  DestString : RawByteString;
begin
  SrcBuf     := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  DestString := TFormat_Copy.Encode(SrcBuf[0], length(SrcBuf));

  CheckEquals(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'),
              DestString);
end;

procedure TestTFormat_Copy.TestIsValidRawByteString;
begin
  CheckEquals(true, TFormat_Copy.IsValid(BytesOf('abcdefghijklmnopqrstuvwxyz')));
  CheckEquals(true, TFormat_Copy.IsValid(BytesOf('')));
end;

procedure TestTFormat_Copy.TestIsValidTBytes;
var
  SrcBuf : TBytes;
begin
  SrcBuf  := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  CheckEquals(true, TFormat_Copy.IsValid(SrcBuf));

  SetLength(SrcBuf, 0);
  CheckEquals(true, TFormat_Copy.IsValid(SrcBuf));
end;

procedure TestTFormat_Copy.TestIsValidTypeless;
var
  SrcBuf : TBytes;
  P      : ^Byte;
begin
  SrcBuf  := BytesOf(RawByteString('1234567890abcdefghijklmnopqrstuvwxyz@!$'));
  CheckEquals(true,  TFormat_Copy.IsValid(SrcBuf[0], Length(SrcBuf)));

  P := nil;
  CheckEquals(true,  TFormat_Copy.IsValid(P^, 0));
  CheckEquals(false, TFormat_Copy.IsValid(SrcBuf[0], -1));
end;

{ TestTFormat }

procedure TestTFormat.SetUp;
begin
  inherited;

end;

procedure TestTFormat.TearDown;
begin
  inherited;

end;

procedure TestTFormat.TestUpCaseBinary;
const
  InputChars  = ' !"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
                '[\]^_`abcdefghijklmnopqrstuvwxyz{|}~';
  OutputChars = ' !"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
                '[\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~';

var
  i : Integer;
  b, exp, res : Byte;
begin
  {$IF CompilerVersion >= 24.0}
  for i := Low(InputChars) to High(InputChars) do
  begin
    b   := ord(InputChars[i]);
    exp := ord(OutputChars[i]);
    res := TDECFormat.UpCaseBinary(b);

    CheckEquals(exp, res);
  end;

  {$ELSE}
  for i := 1 to Length(InputChars) do
  begin
    b   := ord(InputChars[i]);
    exp := ord(OutputChars[i]);
    res := TDECFormat.UpCaseBinary(b);

    CheckEquals(exp, res);
  end;
  {$IFEND}
end;

procedure TestTFormat.TestValidFormat;
var
  result : Boolean;
begin
  result := ValidFormat(nil) = TFormat_Copy;
  CheckEquals(true, result, 'ValidFormat(nil) must be TFormat_Copy');

  result := ValidFormat(TFormat_ESCAPE) = TFormat_ESCAPE;
  CheckEquals(true, result, 'ValidFormat(TFormat_ESCAPE) must be TFormat_ESCAPE');
end;

procedure TestTFormat.TestTableFindBinary;
const
  Data : array[1..8] of TestRecTableFindBinary = (
  (Value: 0;
   Table: '';
   Len:   10;
   Index: -1),
  (Value: 0;
   Table: '';
   Len: -10;
   Index: -1),
  (Value: $31;
   Table: '12345678901';
   Len:   100;
   Index: 0),
  (Value: $32;
   Table: '12345678901';
   Len:   100;
   Index: 1),
  (Value: $30;
   Table: '12345678901';
   Len:   100;
   Index: 9),
  (Value: $29;
   Table: '12345678901';
   Len:   100;
   Index: -1),
  (Value: $30;
   Table: '12345678901';
   Len:   9;
   Index: 9),
  (Value: $30;
   Table: '12345678901';
   Len:   8;
   Index: -1)
  );

var
  i : Integer;
  Idx : Integer;
begin
  for i := Low(Data) to High(Data) do
  begin
    Idx := TDECFormat.TableFindBinary(Data[i].Value,
                                      BytesOf(RawByteString(Data[i].Table)),
                                      Data[i].Len);
    CheckEquals(Data[i].Index, Idx);
  end;
end;

procedure TestTFormat.TestFormatByIdentity;
var
  result : Boolean;
begin
  result := FormatByIdentity(1178647993) = TFormat_Copy;
  CheckEquals(true, result, 'TFormat_Copy must have Identity value 1178647993');

  result := FormatByIdentity(3786628779) = TFormat_HEX;
  CheckEquals(true, result, 'TFormat_HEX must have Identity value 3786628779');

  result := FormatByIdentity(970117517) = TFormat_HEXL;
  CheckEquals(true, result, 'TFormat_HEXL must have Identity value 970117517');
end;

procedure TestTFormat.TestFormatByInvalidIdentity;
begin
  CheckException(TestFormatByInvalidIdentityHelper, EDECClassNotRegisteredException);
end;

procedure TestTFormat.TestFormatByInvalidIdentityHelper;
begin
  FormatByIdentity(0);
end;

procedure TestTFormat.TestClassByIdentity;
var
  result : Boolean;
begin
  result := TDECFormat.ClassByIdentity(1178647993) = TFormat_Copy;
  CheckEquals(true, result, 'TFormat_Copy must have Identity value 1178647993');

  result := TDECFormat.ClassByIdentity(3786628779) = TFormat_HEX;
  CheckEquals(true, result, 'TFormat_HEX must have Identity value 3786628779');

  result := TDECFormat.ClassByIdentity(970117517) = TFormat_HEXL;
  CheckEquals(true, result, 'TFormat_HEXL must have Identity value 970117517');
end;

procedure TestTFormat.TestClassByInvalidIdentity;
begin
  CheckException(TestClassByInvalidIdentityHelper, EDECClassNotRegisteredException);
end;

procedure TestTFormat.TestClassByInvalidIdentityHelper;
begin
  TDECFormat.ClassByIdentity(0);
end;

procedure TestTFormat.TestClassByName;
var
  result : Boolean;
begin
  result := TDECFormat.ClassByName('TFormat_HEX') = TFormat_HEX;
  CheckEquals(true, result, 'Class TFormat_HEX not found');

  result := TDECFormat.ClassByName('TFormat_HEXL') = TFormat_HEXL;
  CheckEquals(true, result, 'Class TFormat_HEXL not found');
end;

procedure TestTFormat.TestClassByInvalidName;
begin
  CheckException(TestClassByInvalidNameHelperEmpty, EDECClassNotRegisteredException);
  CheckException(TestClassByInvalidNameHelperWrong, EDECClassNotRegisteredException);
end;

procedure TestTFormat.TestClassByInvalidNameHelperEmpty;
begin
  TDECFormat.ClassByName('');
end;

procedure TestTFormat.TestClassByInvalidNameHelperWrong;
begin
  TDECFormat.ClassByName('Foo');
end;

procedure TestTFormat.TestFormatByName;
var
  result : Boolean;
begin
  result := FormatByName('TFormat_HEX') = TFormat_HEX;
  CheckEquals(true, result, 'Class TFormat_HEX not found');

  result := FormatByName('TFormat_HEXL') = TFormat_HEXL;
  CheckEquals(true, result, 'Class TFormat_HEXL not found');
end;

procedure TestTFormat.TestFormatByInvalidName;
begin
  CheckException(TestFormatByInvalidNameHelperEmpty, EDECClassNotRegisteredException);
  CheckException(TestFormatByInvalidNameHelperWrong, EDECClassNotRegisteredException);
end;

procedure TestTFormat.TestFormatByInvalidNameHelperEmpty;
begin
  FormatByName('');
end;

procedure TestTFormat.TestFormatByInvalidNameHelperWrong;
begin
  FormatByName('Foo');
end;

procedure TestTFormat.TestIsClassListCreated;
begin
  CheckEquals(true, assigned(TDECFormat.ClassList), 'Class list has not been created in initialization');
end;

initialization
  // Register any test cases with the test runner
  {$IFDEF DUnitX}
  TDUnitX.RegisterTestFixture(TestTFormat);
  TDUnitX.RegisterTestFixture(TestTFormat_Copy);
  {$ELSE}
  RegisterTests('DECFormatBase', [TestTFormat.Suite, TestTFormat_Copy.Suite]);
  {$ENDIF}
end.