testBoolCast.cc

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#include <utl/SafeBoolCast.h>

#include <utl/Test.h>
#include <cppunit/extensions/HelperMacros.h>

using namespace tst;
using namespace utl;


class MyTrue : public SafeBoolCast<MyTrue> {
public:
  bool BoolCast() const { return true; }
};

class MyFalse : public SafeBoolCast<MyFalse> {
public:
  bool BoolCast() const { return false; }
};



class MyFakeFalse : public MyTrue {
public:
  bool BoolCast() const { return false; }
};


class MyNegated : public SafeBoolCast<MyNegated> {
public:
  bool BoolCast() const { return !fB; }
  bool fB;
};


class MyTrueBase : public SafeBoolCast<> {
public:
  bool BoolCast() const { return true; }
};


class MyFalseDerived : public SafeBoolCast<> {
public:
  bool BoolCast() const { return false; }
};


class TestBoolCast : public CppUnit::TestFixture {

  CPPUNIT_TEST_SUITE(TestBoolCast);
  CPPUNIT_TEST(TestTrueFalse);
  CPPUNIT_TEST(TestFakeFalse);
  CPPUNIT_TEST(TestVirtualTrueFalse);
  CPPUNIT_TEST(TestNegated);
  //CPPUNIT_TEST_EXCEPTION(TestThrows, thisException);
  CPPUNIT_TEST_SUITE_END();

public:
  void setUp() { }

  void tearDown() { }

  void
  TestTrueFalse()
  {
    MyTrue t;
    CPPUNIT_ASSERT(t);

    MyFalse f;
    CPPUNIT_ASSERT(!f);
  }

  void
  TestFakeFalse()
  {
    MyFakeFalse ff;
    CPPUNIT_ASSERT(ff); // is true, not false !
  }

  void
  TestVirtualTrueFalse()
  {
    MyTrueBase t;
    CPPUNIT_ASSERT(t);

    MyFalseDerived f;
    CPPUNIT_ASSERT(!f);
  }

  void
  TestNegated()
  {
    MyNegated n;
    n.fB = true;
    CPPUNIT_ASSERT(!n);

    n.fB = false;
    CPPUNIT_ASSERT(n);
  }

};


CPPUNIT_TEST_SUITE_REGISTRATION(TestBoolCast);


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