[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, 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 SW	39
	40	TEST(Board, GoodInput) {
	41	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	42	Board b;
	43	is >> b;
	44	EXPECT_FALSE(is.fail());
	45	EXPECT_TRUE(is.eof());
5d2f7c7c	46	EXPECT_THAT(b.board, ElementsAreArray({15,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}));
32688d85 SW	47	}
	48
	49	TEST(Board, ShortInput) {
	50	std::istringstream is{"15,14,9,13,3,1,12,8,0,11,6,4,7,5,2"};
	51	Board b;
	52	is >> b;
	53	EXPECT_TRUE(is.fail());
	54	}
	55
	56	TEST(Board, NonNumericInput) {
	57	std::istringstream is{"15,14,foo,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	58	Board b;
	59	is >> b;
	60	EXPECT_TRUE(is.fail());
	61	}
b18667f2 SW	62
	63	TEST(Board, RepeatedTileInput) {
	64	std::istringstream is{"15,15,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	65	Board b;
	66	is >> b;
	67	EXPECT_TRUE(is.fail());
	68	}
	69
	70	TEST(Board, LowTileInput) {
	71	std::istringstream is{"-1,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	72	Board b;
	73	is >> b;
	74	EXPECT_TRUE(is.fail());
	75	}
	76
	77	TEST(Board, HighTileInput) {
	78	std::istringstream is{"16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10"};
	79	Board b;
	80	is >> b;
	81	EXPECT_TRUE(is.fail());
	82	}
f3f55aff SW	83
	84	TEST(Board, Hole) {
	85	Board b{{16,14,9,13,3,1,12,8,0,11,6,4,7,5,2,10}};
	86	EXPECT_EQ(8, b.hole());
	87	}
	88
	89	TEST(Board, NoHole) {
	90	Board b{{16,14,9,13,3,1,12,8,16,11,6,4,7,5,2,10}};
	91	EXPECT_THROW(b.hole(), std::runtime_error);
	92	}
9c32325f SW	93
	94	TEST(Board, ZeroDistance) {
	95	Board b{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	96	EXPECT_EQ(0, b.distance(b));
	97	}
	98
	99	TEST(Board, DistanceAdjacentTilesFlipped) {
	100	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	101	Board b2{{2,1,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	102	EXPECT_EQ(2, b1.distance(b2));
	103	}
	104
	105	TEST(Board, DistanceOneMoveRemaining) {
	106	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	107	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}};
	108	EXPECT_EQ(2, b1.distance(b2));
	109	}
	110
	111	TEST(Board, DistanceCornersSwapped) {
	112	Board b1{{0,2,3,13,5,6,7,8,9,10,11,12,4,14,15,1}};
	113	Board b2{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	114	EXPECT_EQ(24, b1.distance(b2));
	115	}
	116
	117	TEST(Board, MaxDistance) {
	118	Board b1{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0}};
	119	Board b2{{0,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}};
	120	EXPECT_EQ(64, b1.distance(b2));
	121	}
5d2f7c7c SW	122
5d2f7c7c SW	123	TEST(Step, TwoSuccessors) {
f548f940	124	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	125	std::vector<Step*> suc = s->successors(s);
	126	EXPECT_THAT(suc, testing::UnorderedElementsAre(
	127	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}))),
	128	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,7,8,9,10,11,0,13,14,15,12})))));
	129	}
	130
	131	TEST(Step, FourSuccessors) {
f548f940	132	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	133	std::vector<Step*> suc = s->successors(s);
	134	EXPECT_THAT(suc, testing::UnorderedElementsAre(
	135	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,0,5,6,7,8,9,10,11,12,13,14,15}))),
	136	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,6,0,7,8,9,10,11,12,13,14,15}))),
	137	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,0,3,4,5,2,6,7,8,9,10,11,12,13,14,15}))),
	138	Field(&Step::board, Field(&Board::board, ElementsAreArray({1,2,3,4,5,9,6,7,8,0,10,11,12,13,14,15})))));
	139	}
49358f36 SW	140
49358f36 SW	141	TEST(Step, Output) {
f548f940 SW	142	auto s1 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,11,8,9,6,0,12,13,10,14,15}}, nullptr});
	143	auto s2 = std::make_shared<Step>(Step{{{1,2,3,4,5,7,0,8,9,6,11,12,13,10,14,15}}, s1});
	144	auto s3 = std::make_shared<Step>(Step{{{1,2,3,4,5,0,7,8,9,6,11,12,13,10,14,15}}, s2});
	145	auto s4 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,0,11,12,13,10,14,15}}, s3});
	146	auto s5 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,0,14,15}}, s4});
	147	auto s6 = std::make_shared<Step>(Step{{{1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,15}}, s5});
	148	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	149	std::ostringstream actual;
	150	actual << *s7;
	151	std::ostringstream expected;
	152	expected << "11 down" << std::endl
	153	<< "7 right" << std::endl
	154	<< "6 up" << std::endl
	155	<< "10 up" << std::endl
	156	<< "14 left" << std::endl
	157	<< "15 left" << std::endl;
	158	EXPECT_EQ(expected.str(), actual.str());
	159	}