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{
*****************************************************************************
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
Authors: Alexander Klenin
}
unit AssertHelpers;
{$mode objfpc}
interface
uses
FPCUnit;
type
TAssertHelper = class helper for TAssert
public
class procedure AssertEquals(
const AMessage: String;
const AExpected, AActual: array of Double; ADelta: Double = 0.0); overload;
class procedure AssertEquals(
const AExpected, AActual: array of Double; ADelta: Double = 0.0); overload;
class procedure AssertEquals(
const AMessage: String; const AExpected, AActual: array of Boolean); overload;
class procedure AssertEquals(
const AExpected, AActual: array of Boolean); overload;
end;
implementation
uses
SysUtils;
function BooleanArrayEqual(const AA, AB: array of Boolean): Boolean;
var
len: Integer;
begin
len := Length(AA);
if len <> Length(AB) then exit(false);
if len = 0 then exit(true);
Result := CompareByte(AA[0], AB[0], len) = 0;
end;
function BooleanArrayToStr(const AData: array of Boolean): String;
var
b: Boolean;
begin
Result := '';
for b in AData do
Result += BoolToStr(b, 'true,', 'false,');
Delete(Result, Length(Result), 1);
end;
function DoubleArrayEqual(const AA, AB: array of Double; ADelta: Double): Boolean;
var
i: Integer;
begin
if Length(AA) <> Length(AB) then exit(false);
for i := 0 to High(AA) do
if Abs(AA[i] - AB[i]) > ADelta then exit(false);
Result := true;
end;
function DoubleArrayToStr(const AData: array of Double): String;
var
a: Double;
begin
Result := '';
for a in AData do
Result += Format('%g,', [a]);
Delete(Result, Length(Result), 1);
end;
{ TAssertHelper }
class procedure TAssertHelper.AssertEquals(
const AExpected, AActual: array of Boolean);
begin
AssertEquals('', AExpected, AActual);
end;
class procedure TAssertHelper.AssertEquals(
const AExpected, AActual: array of Double; ADelta: Double);
begin
AssertEquals('', AExpected, AActual, ADelta);
end;
class procedure TAssertHelper.AssertEquals(
const AMessage: String; const AExpected, AActual: array of Boolean);
var
expectedStr, actualStr: String;
begin
if BooleanArrayEqual(AExpected, AActual) then exit;
expectedStr := BooleanArrayToStr(AExpected);
actualStr := BooleanArrayToStr(AActual);
Fail(AMessage + ComparisonMsg(expectedStr, actualStr));
end;
class procedure TAssertHelper.AssertEquals(
const AMessage: String; const AExpected, AActual: array of Double;
ADelta: Double);
var
expectedStr, actualStr: String;
begin
if DoubleArrayEqual(AExpected, AActual, ADelta) then exit;
expectedStr := DoubleArrayToStr(AExpected);
actualStr := DoubleArrayToStr(AActual);
Fail(AMessage + ComparisonMsg(expectedStr, actualStr));
end;
initialization
Random; // Workaround for issue #21808.
end.
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