[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;

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);
  EXPECT_FALSE(b1 < b2);
  EXPECT_FALSE(b2 < b1);
}

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);
  EXPECT_TRUE(b1 < b2);
  EXPECT_FALSE(b2 < b1);
}

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

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, Board{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}),
    Field(&Step::board, Board{{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, Board{{1,2,3,4,0,5,6,7,8,9,10,11,12,13,14,15}}),
    Field(&Step::board, Board{{1,2,3,4,5,6,0,7,8,9,10,11,12,13,14,15}}),
    Field(&Step::board, Board{{1,0,3,4,5,2,6,7,8,9,10,11,12,13,14,15}}),
    Field(&Step::board, Board{{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	8	using testing::Field;
5d2f7c7c SW	9
5d2f7c7c SW	10	TEST(Step, Adjacency) {
e86755d7 SW	11	const signed char LEFT = -1;
	12	const signed char RIGHT = +1;
	13	const signed char UP = -BOARD_DIM;
	14	const signed char DOWN = +BOARD_DIM;
	15	for (int i = 0; i < BOARD_SIZE; i++) {
	16	SCOPED_TRACE(i);
	17	std::vector<signed char> expected;
	18	if (i >= BOARD_DIM) {
	19	expected.push_back(i + UP);
	20	}
	21	if (i < BOARD_SIZE - BOARD_DIM) {
	22	expected.push_back(i + DOWN);
	23	}
	24	if (i % BOARD_DIM != 0) {
	25	expected.push_back(i + LEFT);
	26	}
	27	if (i % BOARD_DIM != BOARD_DIM - 1) {
	28	expected.push_back(i + RIGHT);
	29	}
	30
	31	std::vector<signed char> actual;
5d2f7c7c SW	32	for (int j = 0; Step::adjacent[i][j] >= 0; j++) {
5d2f7c7c SW	33	actual.push_back(Step::adjacent[i][j]);
e86755d7 SW	34	}
	35	EXPECT_THAT(actual, testing::UnorderedElementsAreArray(expected));
	36	}
	37	}
32688d85	38
0e89d341 SW	39	TEST(Board, Equal) {
	40	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	41	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	42	EXPECT_TRUE(b1 == b2);
	43	EXPECT_FALSE(b1 != b2);
	44	EXPECT_EQ(b1, b2);
310a7132 SW	45	EXPECT_FALSE(b1 < b2);
310a7132 SW	46	EXPECT_FALSE(b2 < b1);
0e89d341 SW	47	}
	48
	49	TEST(Board, NotEqual) {
	50	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	51	Board b2{{1,2,3,4,5,6,7,8,10,9,11,12,13,14,15,0}};
	52	EXPECT_FALSE(b1 == b2);
	53	EXPECT_TRUE(b1 != b2);
	54	EXPECT_NE(b1, b2);
310a7132 SW	55	EXPECT_TRUE(b1 < b2);
310a7132 SW	56	EXPECT_FALSE(b2 < b1);
0e89d341 SW	57	}
0e89d341 SW	58
32688d85 SW	59	TEST(Board, GoodInput) {
	60	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	61	Board b;
	62	is >> b;
	63	EXPECT_FALSE(is.fail());
	64	EXPECT_TRUE(is.eof());
9b1ce995	65	EXPECT_EQ((Board{{15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}}), b);
32688d85 SW	66	}
	67
	68	TEST(Board, ShortInput) {
	69	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2"};
	70	Board b;
	71	is >> b;
	72	EXPECT_TRUE(is.fail());
	73	}
	74
	75	TEST(Board, NonNumericInput) {
	76	std::istringstream is{"15,14,foo,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	77	Board b;
	78	is >> b;
	79	EXPECT_TRUE(is.fail());
	80	}
b18667f2 SW	81
	82	TEST(Board, RepeatedTileInput) {
	83	std::istringstream is{"15,15,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	84	Board b;
	85	is >> b;
	86	EXPECT_TRUE(is.fail());
	87	}
	88
	89	TEST(Board, LowTileInput) {
	90	std::istringstream is{"-1,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	91	Board b;
	92	is >> b;
	93	EXPECT_TRUE(is.fail());
	94	}
	95
	96	TEST(Board, HighTileInput) {
	97	std::istringstream is{"16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	98	Board b;
	99	is >> b;
	100	EXPECT_TRUE(is.fail());
	101	}
f3f55aff SW	102
	103	TEST(Board, Hole) {
	104	Board b{{16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}};
	105	EXPECT_EQ(8, b.hole());
	106	}
	107
	108	TEST(Board, NoHole) {
	109	Board b{{16,14,9,13,3,1,12,8,16,11,6,4,7,5,2,10}};
	110	EXPECT_THROW(b.hole(), std::runtime_error);
	111	}
9c32325f SW	112
	113	TEST(Board, ZeroDistance) {
	114	Board b{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	115	EXPECT_EQ(0, b.distance(b));
	116	}
	117
	118	TEST(Board, DistanceAdjacentTilesFlipped) {
	119	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	120	Board b2{{2,1,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	121	EXPECT_EQ(2, b1.distance(b2));
	122	}
	123
	124	TEST(Board, DistanceOneMoveRemaining) {
	125	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	126	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}};
	127	EXPECT_EQ(2, b1.distance(b2));
	128	}
	129
	130	TEST(Board, DistanceCornersSwapped) {
	131	Board b1{{0,2,3,13,5,6,7,8,9,10,11,12,4,14,15,1}};
	132	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	133	EXPECT_EQ(24, b1.distance(b2));
	134	}
	135
	136	TEST(Board, MaxDistance) {
	137	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	138	Board b2{{0,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}};
	139	EXPECT_EQ(64, b1.distance(b2));
	140	}
5d2f7c7c SW	141
5d2f7c7c SW	142	TEST(Step, TwoSuccessors) {
f548f940	143	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	144	std::vector<Step*> suc = s->successors(s);
5d2f7c7c SW	145	EXPECT_THAT(suc, testing::UnorderedElementsAre(
9b1ce995 SW	146	Field(&Step::board, Board{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}),
9b1ce995 SW	147	Field(&Step::board, Board{{1,2,3,4,5,6,7,8,9,10,11,0,13,14,15,12}})));
5d2f7c7c SW	148	}
	149
	150	TEST(Step, FourSuccessors) {
f548f940	151	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	152	std::vector<Step*> suc = s->successors(s);
5d2f7c7c SW	153	EXPECT_THAT(suc, testing::UnorderedElementsAre(
9b1ce995 SW	154	Field(&Step::board, Board{{1,2,3,4,0,5,6,7,8,9,10,11,12,13,14,15}}),
	155	Field(&Step::board, Board{{1,2,3,4,5,6,0,7,8,9,10,11,12,13,14,15}}),
	156	Field(&Step::board, Board{{1,0,3,4,5,2,6,7,8,9,10,11,12,13,14,15}}),
	157	Field(&Step::board, Board{{1,2,3,4,5,9,6,7,8,0,10,11,12,13,14,15}})));
5d2f7c7c	158	}
49358f36 SW	159
49358f36 SW	160	TEST(Step, Output) {
f548f940 SW	161	auto s1 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,11,8,9,6,0,12,13,10,14,15}}, nullptr});
	162	auto s2 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,0,8,9,6,11,12,13,10,14,15}}, s1});
	163	auto s3 = std::make_shared<Step>(Step{{{1,2,3,4,5,0,7,8,9,6,11,12,13,10,14,15}}, s2});
	164	auto s4 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,0,11,12,13,10,14,15}}, s3});
	165	auto s5 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,0,14,15}}, s4});
	166	auto s6 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}, s5});
	167	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	168	std::ostringstream actual;
	169	actual << *s7;
	170	std::ostringstream expected;
	171	expected << "11 down" << std::endl
	172	<< "7 right" << std::endl
	173	<< "6 up" << std::endl
	174	<< "10 up" << std::endl
	175	<< "14 left" << std::endl
	176	<< "15 left" << std::endl;
	177	EXPECT_EQ(expected.str(), actual.str());
	178	}