#ifdef WITH_TESTS

#include "../Tests.h"
#include "../../geo/Heading.h"

TEST(Heading, diff) {

	// 180 degree turn
	{
//		Heading h1(0,0, 0,+1);
//		Heading h2(0,0, 0,-1);
//		ASSERT_NEAR(h1.getDiffHalfRAD(h2), M_PI, 0.001);
//		ASSERT_NEAR(h2.getDiffHalfRAD(h1), M_PI, 0.001);
	}

	// ~180 degree turn
	{
		Heading h1(0,0,  0.00,+1);
		Heading h2(0,1, -0.01,-1);
		Heading h3(0,1, +0.01,-1);
		ASSERT_NEAR(h1.getDiffHalfRAD(h2), M_PI, 0.01);
		ASSERT_NEAR(h2.getDiffHalfRAD(h1), M_PI, 0.01);
		ASSERT_NEAR(h1.getDiffHalfRAD(h3), M_PI, 0.01);
		ASSERT_NEAR(h3.getDiffHalfRAD(h1), M_PI, 0.01);
	}

}

TEST(Heading, mod) {

	const float d = 0.0001;

	Heading h1(+0);	h1 += 3.1415;	ASSERT_NEAR(3.1415, h1.getRAD(), d);
	Heading h2(+4);	h2 += 3;		ASSERT_NEAR(7 - 2*M_PI, h2.getRAD(), d);
	Heading h3(+0); h3 -= 3;		ASSERT_NEAR(2*M_PI-3, h3.getRAD(), d);

}

TEST(Heading, ctor) {

	// OK
	Heading(0);
	Heading(1);
	Heading(2);
	Heading(3);
	Heading(4);
	Heading(5);
	Heading(6);
	Heading(2*M_PI-0.0001);

	// out of range
	ASSERT_THROW(Heading(-0.0001), std::exception);
	ASSERT_THROW(Heading(2*M_PI+0.0001), std::exception);

}

TEST(Heading, eq) {

	ASSERT_EQ(Heading(0), Heading(0));
	ASSERT_EQ(Heading(1), Heading(1));
	ASSERT_EQ(Heading(2), Heading(2));

}

//TEST(Heading, random) {

//	// two random values must not be equal
//	ASSERT_NE(Heading::rnd(), Heading::rnd());
//	ASSERT_NE(Heading::rnd(), Heading::rnd());
//	ASSERT_NE(Heading::rnd(), Heading::rnd());

//}

#endif