2017-02-13 10:50:35 -05:00
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// PieceRotation.cpp
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// Implements the tests for cPiece::cConnector::eDirection rotations
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#include "Globals.h"
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#include <exception>
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#include <map>
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2017-02-26 16:49:23 -05:00
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#include "Generating/PiecePool.h"
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2017-02-13 10:50:35 -05:00
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static cPiece::cConnector::eDirection g_AllDirections[] =
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{
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cPiece::cConnector::dirXM,
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cPiece::cConnector::dirXP,
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cPiece::cConnector::dirYM,
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cPiece::cConnector::dirYP,
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cPiece::cConnector::dirZM,
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cPiece::cConnector::dirZP,
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cPiece::cConnector::dirYM_XM_ZM,
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cPiece::cConnector::dirYM_XM_ZP,
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cPiece::cConnector::dirYM_XP_ZM,
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cPiece::cConnector::dirYM_XP_ZP,
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cPiece::cConnector::dirYP_XM_ZM,
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cPiece::cConnector::dirYP_XM_ZP,
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cPiece::cConnector::dirYP_XP_ZM,
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cPiece::cConnector::dirYP_XP_ZP,
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};
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class cTestFailure: public std::exception
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{
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public:
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cTestFailure(const char * a_Expression, const char * a_FileName, const int a_Line):
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std::exception(),
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m_Expression(a_Expression),
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m_FileName(a_FileName),
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m_Line(a_Line)
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{
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}
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const std::string m_Expression;
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const std::string m_FileName;
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const int m_Line;
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};
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2020-05-05 16:39:59 -04:00
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#define EXPECT(X) \
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do { \
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if (!(X)) \
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{ \
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ASSERT(X); \
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throw cTestFailure(#X, __FILE__, __LINE__); \
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} \
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} while (false)
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2017-02-13 10:50:35 -05:00
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/** Tests that rotating a direction in one way and then the opposite way produces the original direction. */
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static void testBackAndForth()
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{
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto rotated = cPiece::cConnector::RotateDirectionCW(g_AllDirections[i]);
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auto back = cPiece::cConnector::RotateDirectionCCW(rotated);
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EXPECT(back == g_AllDirections[i]);
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}
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto rotated = cPiece::cConnector::RotateDirectionCCW(g_AllDirections[i]);
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auto back = cPiece::cConnector::RotateDirectionCW(rotated);
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EXPECT(back == g_AllDirections[i]);
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}
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}
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/** Tests rotating the direction 360 degrees. */
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static void testFullRotation()
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{
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// Rotate 90 degrees CCW four times:
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto d = g_AllDirections[i];
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for (int j = 0; j < 4; ++j)
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{
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d = cPiece::cConnector::RotateDirectionCCW(d);
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}
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EXPECT(d == g_AllDirections[i]);
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}
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// Rotate 90 degrees CW four times:
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto d = g_AllDirections[i];
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for (int j = 0; j < 4; ++j)
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{
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d = cPiece::cConnector::RotateDirectionCW(d);
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}
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EXPECT(d == g_AllDirections[i]);
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}
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// Rotate 180 degrees twice:
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto d = g_AllDirections[i];
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d = cPiece::cConnector::RotateDirection(d);
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d = cPiece::cConnector::RotateDirection(d);
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EXPECT(d == g_AllDirections[i]);
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}
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}
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/** Tests that no two values are rotated onto the same destination value. */
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template <class Fn>
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static void testPermutation(Fn & a_Fn)
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{
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std::map<cPiece::cConnector::eDirection, int> numDest;
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for (size_t i = 0; i < ARRAYCOUNT(g_AllDirections); ++i)
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{
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auto d = a_Fn(g_AllDirections[i]);
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EXPECT(numDest[d] == 0);
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numDest[d] = 1;
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}
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}
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int main(void)
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{
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LOG("PieceRotation test starting.");
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try
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{
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testBackAndForth();
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testFullRotation();
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testPermutation(cPiece::cConnector::RotateDirection);
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testPermutation(cPiece::cConnector::RotateDirectionCW);
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testPermutation(cPiece::cConnector::RotateDirectionCCW);
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}
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catch (const cTestFailure & f)
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{
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LOGERROR("Test failed:\tExpression: %s\n\tFile: %s (%d)", f.m_Expression.c_str(), f.m_FileName.c_str(), f.m_Line);
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return 1;
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}
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catch (const std::exception & exc)
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{
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LOGERROR("Exception caught: %s", exc.what());
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return 2;
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}
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LOG("PieceRotation test succeeded.");
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return 0;
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}
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