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TestMakeRandom.h

Go to the documentation of this file.

#ifndef Impala_Core_Array_TestMakeRandom_h
#define Impala_Core_Array_TestMakeRandom_h

#include <cppunit/extensions/HelperMacros.h>
#include "Core/Array/MakeRandom.h"
#include "Core/Array/Equals.h"

namespace Impala
{
namespace Core
{
namespace Array
{

class TestMakeRandom : public CPPUNIT_NS::TestFixture
{
    CPPUNIT_TEST_SUITE(TestMakeRandom);
    CPPUNIT_TEST(testSize);
    CPPUNIT_TEST(testData);
    CPPUNIT_TEST(testRandomSeed);
    CPPUNIT_TEST_SUITE_END();
    
public:

    void
    setUp()
    {
    }

    void
    tearDown()
    {
    }

    void
    testSize()
    {
        testSize(0,0);
        testSize(1,1);
        testSize(10,1);
        testSize(10,10);
    }

    void
    testData()
    {
        testData(10, 10, 1);
        testData(10, 10, 2.5);
    }
    
    void
    testSize(Int64 w, Int64 h)
    {
        Array2dScalarReal64* a = MakeRandomScalarReal64(w, h, 10.);
        CPPUNIT_ASSERT_EQUAL(w, a->CW());
        CPPUNIT_ASSERT_EQUAL(h, a->CH());
    }
    
    void
    testData(Int64 w, Int64 h, double maxVal)
    {
        Array2dScalarReal64* a = MakeRandomScalarReal64(w, h, maxVal);
        // we could use PixMax here, but PixMax itself doesn't have unit-tests...
        bool error = false;
        for(int y=0 ; y<h ; ++y)
            for(int x=0 ; x<w ; ++x)
            {
                if(a->Value(x, y) > maxVal)
                {
                    ILOG_DEBUG(a->Value(x, y) <<" > "<< maxVal <<" @ ("<< x
                               <<", "<< y <<")");
                    error = true;
                }
            }
        CPPUNIT_ASSERT(!error);
    }

    void
    testRandomSeed()
    {
        Util::Random rng;
        rng.SetSeed(1);
        Array2dScalarReal64* a = MakeRandomScalarReal64(3, 3, 1., rng);
        rng.SetSeed(1);
        Array2dScalarReal64* b = MakeRandomScalarReal64(3, 3, 1., rng);
        rng.SetSeed(2);
        Array2dScalarReal64* c = MakeRandomScalarReal64(3, 3, 1., rng);
        CPPUNIT_ASSERT(Equals(a,b));
        CPPUNIT_ASSERT(!Equals(a,c));
        delete a;
        delete b;
        delete c;
    }
    
    
private:
    ILOG_CLASS;
};

ILOG_CLASS_INIT(TestMakeRandom, Impala.Core.Array.Test);
CPPUNIT_TEST_SUITE_REGISTRATION(TestMakeRandom);    

} // namespace
} // namespace
} // namespace

#endif

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