[slidingtile] / sliding_tile_lib_test.cc

#include "sliding_tile_lib.h"

#include "gtest/gtest.h"
#include "gmock/gmock.h"
#include <vector>
#include <sstream>

using testing::Field;
using testing::ElementsAreArray;

TEST(Step, Adjacency) {
	const signed char LEFT  = -1;
	const signed char RIGHT = +1;
	const signed char UP    = -BOARD_DIM;
	const signed char DOWN  = +BOARD_DIM;
  for (int i = 0; i < BOARD_SIZE; i++) {
    SCOPED_TRACE(i);
    std::vector<signed char> expected;
	  if (i >= BOARD_DIM) {
		  expected.push_back(i + UP);
	  }
	  if (i < BOARD_SIZE - BOARD_DIM) {
		  expected.push_back(i + DOWN);
	  }
	  if (i % BOARD_DIM != 0) {
		  expected.push_back(i + LEFT);
	  }
	  if (i % BOARD_DIM != BOARD_DIM - 1) {
		  expected.push_back(i + RIGHT);
	  }

    std::vector<signed char> actual;
    for (int j = 0; Step::adjacent[i][j] >= 0; j++) {
      actual.push_back(Step::adjacent[i][j]);
    }
    EXPECT_THAT(actual, testing::UnorderedElementsAreArray(expected));
  }
}

TEST(Board, Equal) {
  Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  EXPECT_TRUE(b1 == b2);
  EXPECT_FALSE(b1 != b2);
  EXPECT_EQ(b1, b2);
}

TEST(Board, NotEqual) {
  Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  Board b2{{1,2,3,4,5,6,7,8,10,9,11,12,13,14,15,0}};
  EXPECT_FALSE(b1 == b2);
  EXPECT_TRUE(b1 != b2);
  EXPECT_NE(b1, b2);
}

TEST(Board, GoodInput) {
  std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
  Board b;
  is >> b;
  EXPECT_FALSE(is.fail());
  EXPECT_TRUE(is.eof());
  EXPECT_THAT(b.board, ElementsAreArray({15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}));
}

TEST(Board, ShortInput) {
  std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2"};
  Board b;
  is >> b;
  EXPECT_TRUE(is.fail());
}

TEST(Board, NonNumericInput) {
  std::istringstream is{"15,14,foo,13,3,1,12,8,0,11,6,4,7,5,2,10"};
  Board b;
  is >> b;
  EXPECT_TRUE(is.fail());
}

TEST(Board, RepeatedTileInput) {
  std::istringstream is{"15,15,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
  Board b;
  is >> b;
  EXPECT_TRUE(is.fail());
}

TEST(Board, LowTileInput) {
  std::istringstream is{"-1,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
  Board b;
  is >> b;
  EXPECT_TRUE(is.fail());
}

TEST(Board, HighTileInput) {
  std::istringstream is{"16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
  Board b;
  is >> b;
  EXPECT_TRUE(is.fail());
}

TEST(Board, Hole) {
  Board b{{16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}};
  EXPECT_EQ(8, b.hole());
}

TEST(Board, NoHole) {
  Board b{{16,14,9,13,3,1,12,8,16,11,6,4,7,5,2,10}};
  EXPECT_THROW(b.hole(), std::runtime_error);
}

TEST(Board, ZeroDistance) {
  Board b{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  EXPECT_EQ(0, b.distance(b));
}

TEST(Board, DistanceAdjacentTilesFlipped) {
  Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  Board b2{{2,1,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  EXPECT_EQ(2, b1.distance(b2));
}

TEST(Board, DistanceOneMoveRemaining) {
  Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}};
  EXPECT_EQ(2, b1.distance(b2));
}

TEST(Board, DistanceCornersSwapped) {
  Board b1{{0,2,3,13,5,6,7,8,9,10,11,12,4,14,15,1}};
  Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  EXPECT_EQ(24, b1.distance(b2));
}

TEST(Board, MaxDistance) {
  Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
  Board b2{{0,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}};
  EXPECT_EQ(64, b1.distance(b2));
}

TEST(Step, TwoSuccessors) {
  auto s = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}}, nullptr});
  std::vector<Step*> suc = s->successors(s);
  EXPECT_THAT(suc, testing::UnorderedElementsAre(
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}))),
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,0,13,14,15,12})))));
}

TEST(Step, FourSuccessors) {
  auto s = std::make_shared<Step>(Step{{{1,2,3,4,5,0,6,7,8,9,10,11,12,13,14,15}}, nullptr});
  std::vector<Step*> suc = s->successors(s);
  EXPECT_THAT(suc, testing::UnorderedElementsAre(
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,0,5,6,7,8,9,10,11,12,13,14,15}))),
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,0,7,8,9,10,11,12,13,14,15}))),
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,0,3,4,5,2,6,7,8,9,10,11,12,13,14,15}))),
    Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,9,6,7,8,0,10,11,12,13,14,15})))));
}

TEST(Step, Output) {
  auto s1 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,11,8,9,6,0,12,13,10,14,15}}, nullptr});
  auto s2 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,0,8,9,6,11,12,13,10,14,15}}, s1});
  auto s3 = std::make_shared<Step>(Step{{{1,2,3,4,5,0,7,8,9,6,11,12,13,10,14,15}}, s2});
  auto s4 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,0,11,12,13,10,14,15}}, s3});
  auto s5 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,0,14,15}}, s4});
  auto s6 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}, s5});
  auto s7 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}}, s6});
  std::ostringstream actual;
  actual << *s7;
  std::ostringstream expected;
  expected << "11 down" << std::endl
           << "7 right" << std::endl
           << "6 up"    << std::endl
           << "10 up"   << std::endl
           << "14 left" << std::endl
           << "15 left" << std::endl;
  EXPECT_EQ(expected.str(), actual.str());
}
Commit	Line	Data
e86755d7 SW	1	#include "sliding_tile_lib.h"
	2
	3	#include "gtest/gtest.h"
	4	#include "gmock/gmock.h"
	5	#include <vector>
49358f36	6	#include <sstream>
e86755d7	7
5d2f7c7c SW	8	using testing::Field;
	9	using testing::ElementsAreArray;
	10
	11	TEST(Step, Adjacency) {
e86755d7 SW	12	const signed char LEFT = -1;
	13	const signed char RIGHT = +1;
	14	const signed char UP = -BOARD_DIM;
	15	const signed char DOWN = +BOARD_DIM;
	16	for (int i = 0; i < BOARD_SIZE; i++) {
	17	SCOPED_TRACE(i);
	18	std::vector<signed char> expected;
	19	if (i >= BOARD_DIM) {
	20	expected.push_back(i + UP);
	21	}
	22	if (i < BOARD_SIZE - BOARD_DIM) {
	23	expected.push_back(i + DOWN);
	24	}
	25	if (i % BOARD_DIM != 0) {
	26	expected.push_back(i + LEFT);
	27	}
	28	if (i % BOARD_DIM != BOARD_DIM - 1) {
	29	expected.push_back(i + RIGHT);
	30	}
	31
	32	std::vector<signed char> actual;
5d2f7c7c SW	33	for (int j = 0; Step::adjacent[i][j] >= 0; j++) {
5d2f7c7c SW	34	actual.push_back(Step::adjacent[i][j]);
e86755d7 SW	35	}
	36	EXPECT_THAT(actual, testing::UnorderedElementsAreArray(expected));
	37	}
	38	}
32688d85	39
0e89d341 SW	40	TEST(Board, Equal) {
	41	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	42	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	43	EXPECT_TRUE(b1 == b2);
	44	EXPECT_FALSE(b1 != b2);
	45	EXPECT_EQ(b1, b2);
	46	}
	47
	48	TEST(Board, NotEqual) {
	49	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	50	Board b2{{1,2,3,4,5,6,7,8,10,9,11,12,13,14,15,0}};
	51	EXPECT_FALSE(b1 == b2);
	52	EXPECT_TRUE(b1 != b2);
	53	EXPECT_NE(b1, b2);
	54	}
	55
32688d85 SW	56	TEST(Board, GoodInput) {
	57	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	58	Board b;
	59	is >> b;
	60	EXPECT_FALSE(is.fail());
	61	EXPECT_TRUE(is.eof());
5d2f7c7c	62	EXPECT_THAT(b.board, ElementsAreArray({15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}));
32688d85 SW	63	}
	64
	65	TEST(Board, ShortInput) {
	66	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2"};
	67	Board b;
	68	is >> b;
	69	EXPECT_TRUE(is.fail());
	70	}
	71
	72	TEST(Board, NonNumericInput) {
	73	std::istringstream is{"15,14,foo,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	74	Board b;
	75	is >> b;
	76	EXPECT_TRUE(is.fail());
	77	}
b18667f2 SW	78
	79	TEST(Board, RepeatedTileInput) {
	80	std::istringstream is{"15,15,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	81	Board b;
	82	is >> b;
	83	EXPECT_TRUE(is.fail());
	84	}
	85
	86	TEST(Board, LowTileInput) {
	87	std::istringstream is{"-1,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	88	Board b;
	89	is >> b;
	90	EXPECT_TRUE(is.fail());
	91	}
	92
	93	TEST(Board, HighTileInput) {
	94	std::istringstream is{"16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	95	Board b;
	96	is >> b;
	97	EXPECT_TRUE(is.fail());
	98	}
f3f55aff SW	99
	100	TEST(Board, Hole) {
	101	Board b{{16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}};
	102	EXPECT_EQ(8, b.hole());
	103	}
	104
	105	TEST(Board, NoHole) {
	106	Board b{{16,14,9,13,3,1,12,8,16,11,6,4,7,5,2,10}};
	107	EXPECT_THROW(b.hole(), std::runtime_error);
	108	}
9c32325f SW	109
	110	TEST(Board, ZeroDistance) {
	111	Board b{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	112	EXPECT_EQ(0, b.distance(b));
	113	}
	114
	115	TEST(Board, DistanceAdjacentTilesFlipped) {
	116	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	117	Board b2{{2,1,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	118	EXPECT_EQ(2, b1.distance(b2));
	119	}
	120
	121	TEST(Board, DistanceOneMoveRemaining) {
	122	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	123	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}};
	124	EXPECT_EQ(2, b1.distance(b2));
	125	}
	126
	127	TEST(Board, DistanceCornersSwapped) {
	128	Board b1{{0,2,3,13,5,6,7,8,9,10,11,12,4,14,15,1}};
	129	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	130	EXPECT_EQ(24, b1.distance(b2));
	131	}
	132
	133	TEST(Board, MaxDistance) {
	134	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	135	Board b2{{0,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}};
	136	EXPECT_EQ(64, b1.distance(b2));
	137	}
5d2f7c7c SW	138
5d2f7c7c SW	139	TEST(Step, TwoSuccessors) {
f548f940	140	auto s = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}}, nullptr});
5d2f7c7c SW	141	std::vector<Step*> suc = s->successors(s);
	142	EXPECT_THAT(suc, testing::UnorderedElementsAre(
	143	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}))),
	144	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,0,13,14,15,12})))));
	145	}
	146
	147	TEST(Step, FourSuccessors) {
f548f940	148	auto s = std::make_shared<Step>(Step{{{1,2,3,4,5,0,6,7,8,9,10,11,12,13,14,15}}, nullptr});
5d2f7c7c SW	149	std::vector<Step*> suc = s->successors(s);
	150	EXPECT_THAT(suc, testing::UnorderedElementsAre(
	151	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,0,5,6,7,8,9,10,11,12,13,14,15}))),
	152	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,0,7,8,9,10,11,12,13,14,15}))),
	153	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,0,3,4,5,2,6,7,8,9,10,11,12,13,14,15}))),
	154	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,9,6,7,8,0,10,11,12,13,14,15})))));
	155	}
49358f36 SW	156
49358f36 SW	157	TEST(Step, Output) {
f548f940 SW	158	auto s1 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,11,8,9,6,0,12,13,10,14,15}}, nullptr});
	159	auto s2 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,0,8,9,6,11,12,13,10,14,15}}, s1});
	160	auto s3 = std::make_shared<Step>(Step{{{1,2,3,4,5,0,7,8,9,6,11,12,13,10,14,15}}, s2});
	161	auto s4 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,0,11,12,13,10,14,15}}, s3});
	162	auto s5 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,0,14,15}}, s4});
	163	auto s6 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}, s5});
	164	auto s7 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}}, s6});
49358f36 SW	165	std::ostringstream actual;
	166	actual << *s7;
	167	std::ostringstream expected;
	168	expected << "11 down" << std::endl
	169	<< "7 right" << std::endl
	170	<< "6 up" << std::endl
	171	<< "10 up" << std::endl
	172	<< "14 left" << std::endl
	173	<< "15 left" << std::endl;
	174	EXPECT_EQ(expected.str(), actual.str());
	175	}