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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cc/sgf.h"
#include <vector>
#include "absl/strings/str_cat.h"
#include "cc/color.h"
#include "cc/coord.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace minigo {
namespace sgf {
namespace {
class AstTest : public ::testing::Test {
protected:
Ast ast_;
};
TEST_F(AstTest, NoTrees) {
EXPECT_TRUE(ast_.Parse("")) << ast_.error();
EXPECT_TRUE(ast_.Parse(" \n ")) << ast_.error();
}
TEST_F(AstTest, BadTree) { EXPECT_FALSE(ast_.Parse(" \n x")); }
TEST_F(AstTest, EmptyTree) { EXPECT_FALSE(ast_.Parse("()")); }
TEST_F(AstTest, EmptyNode) {
EXPECT_TRUE(ast_.Parse("(;)")) << ast_.error();
ASSERT_EQ(1, ast_.trees().size());
EXPECT_EQ(1, ast_.trees()[0].nodes.size());
EXPECT_EQ(0, ast_.trees()[0].nodes[0].properties.size());
EXPECT_EQ(0, ast_.trees()[0].children.size());
EXPECT_EQ("(;)", ast_.trees()[0].ToString());
}
TEST_F(AstTest, MultipleEmptyNodes) {
EXPECT_TRUE(ast_.Parse("(;;;)")) << ast_.error();
ASSERT_EQ(1, ast_.trees().size());
EXPECT_EQ(3, ast_.trees()[0].nodes.size());
EXPECT_EQ("(;\n;\n;)", ast_.trees()[0].ToString());
}
TEST_F(AstTest, OneNodeTree) {
EXPECT_TRUE(ast_.Parse("(;A[1][hmm])")) << ast_.error();
ASSERT_EQ(1, ast_.trees().size());
EXPECT_EQ("(;A[1][hmm])", ast_.trees()[0].ToString());
}
TEST_F(AstTest, PropertyIdIsMissing) { EXPECT_FALSE(ast_.Parse("(;[])")); }
TEST_F(AstTest, PropertyIdIsNotUpper) { EXPECT_FALSE(ast_.Parse("(;a[])")); }
TEST_F(AstTest, PropertyHasOneEmptyValue) {
EXPECT_TRUE(ast_.Parse("(;A[])")) << ast_.error();
}
TEST_F(AstTest, PropertyHasMultipleEmptyValues) {
EXPECT_TRUE(ast_.Parse("(;A[][][])")) << ast_.error();
ASSERT_EQ(1, ast_.trees().size());
EXPECT_EQ(1, ast_.trees()[0].nodes.size());
EXPECT_EQ(1, ast_.trees()[0].nodes[0].properties.size());
EXPECT_EQ("A", ast_.trees()[0].nodes[0].properties[0].id);
EXPECT_EQ(3, ast_.trees()[0].nodes[0].properties[0].values.size());
EXPECT_EQ("(;A[][][])", ast_.trees()[0].ToString());
}
TEST_F(AstTest, NestedTrees) {
EXPECT_TRUE(ast_.Parse("(; (;A[b][c];D[]) (;) (;E[f];G[] (;H[i])))"))
<< ast_.error();
ASSERT_EQ(1, ast_.trees().size());
EXPECT_EQ(R"((;
(;A[b][c]
;D[])
(;)
(;E[f]
;G[]
(;H[i]))))",
ast_.trees()[0].ToString());
}
TEST_F(AstTest, MultipleTrees) {
EXPECT_TRUE(ast_.Parse("(;A[])(;B[c]) ( ;D[e][f])")) << ast_.error();
ASSERT_EQ(3, ast_.trees().size());
EXPECT_EQ("(;A[])", ast_.trees()[0].ToString());
EXPECT_EQ("(;B[c])", ast_.trees()[1].ToString());
EXPECT_EQ("(;D[e][f])", ast_.trees()[2].ToString());
}
TEST_F(AstTest, NodesMustComeBeforeChildren) {
EXPECT_FALSE(ast_.Parse("(() ;A[])"));
}
TEST(SgfTest, CreateSgfStringDefaults) {
CreateSgfOptions options;
options.result = "W+R";
auto expected = absl::StrCat(
"(;GM[1]FF[4]CA[UTF-8]AP[Minigo_sgfgenerator]RU[Chinese]\nSZ[", kN,
"]KM[7.5]PW[Minigo]PB[Minigo]RE[W+R]\n)\n");
EXPECT_EQ(expected, CreateSgfString({}, options));
}
TEST(SgfTest, CreateSgfStringOptions) {
CreateSgfOptions options;
options.black_name = "Alice";
options.white_name = "Bob";
options.ruleset = "Some rules";
options.result = "B+5";
options.komi = 101;
auto expected = absl::StrCat(
"(;GM[1]FF[4]CA[UTF-8]AP[Minigo_sgfgenerator]RU[Some rules]\nSZ[", kN,
"]KM[101]PW[Bob]PB[Alice]RE[B+5]\n)\n");
EXPECT_EQ(expected, CreateSgfString({}, options));
}
TEST(SgfTest, CreateSgfStringMoves) {
CreateSgfOptions options;
options.result = "B+R";
std::vector<MoveWithComment> moves = {
{Color::kBlack, Coord::FromSgf("be"), ""},
{Color::kWhite, Coord::FromSgf("aa"), "Hello there"},
{Color::kBlack, Coord::FromSgf("hb"), ""},
{Color::kWhite, Coord::FromSgf("ge"), "General Kenobi"},
{Color::kBlack, Coord::kPass, "You are a bold one"},
};
// clang-format off
auto expected = absl::StrCat(
"(;GM[1]FF[4]CA[UTF-8]AP[Minigo_sgfgenerator]RU[Chinese]\nSZ[", kN,
"]KM[7.5]PW[Minigo]PB[Minigo]RE[B+R]\n",
";B[be]",
";W[aa]C[Hello there]",
";B[hb]",
";W[ge]C[General Kenobi]",
";B[]C[You are a bold one])\n");
// clang-format on
EXPECT_EQ(expected, CreateSgfString(moves, options));
}
TEST(SgfTest, InvalidCoord) {
std::string sgf = "(;FF[4](;B[xx]))\n";
Ast ast;
ASSERT_TRUE(ast.Parse(sgf)) << ast.error();
std::vector<std::unique_ptr<sgf::Node>> trees;
EXPECT_FALSE(GetTrees(ast, &trees));
}
TEST(SgfTest, GetMainLineMoves) {
/*
--- B[aa] - W[ab] - B[ac]
\ \
\ B[ad] - W[ae]
\
B[af] - W[ag] - B[ah]
\
W[ai]
*/
std::string sgf =
"(;FF[4](;B[aa];W[ab]C[hello!](;B[ac])(;B[ad];W[ae]))"
"(;B[af](;W[ag];B[ah])(;W[ai])))\n";
std::vector<Move> expected_main_line = {
{Color::kBlack, Coord::FromSgf("aa")},
{Color::kWhite, Coord::FromSgf("ab")},
{Color::kBlack, Coord::FromSgf("ac")},
};
Ast ast;
ASSERT_TRUE(ast.Parse(sgf)) << ast.error();
std::vector<std::unique_ptr<sgf::Node>> trees;
ASSERT_TRUE(GetTrees(ast, &trees));
ASSERT_EQ(2, trees.size());
auto actual_main_line = trees[0]->ExtractMainLine();
EXPECT_THAT(actual_main_line, ::testing::ContainerEq(expected_main_line));
}
TEST(SgfTest, CommentEscaping) {
// Fragment of an SGF that contains escaped characters.
std::string sgf = "(;FF[4];C[test [?\\]: comment]B[aa];W[bb]C[\\]])";
Ast ast;
EXPECT_TRUE(ast.Parse(sgf)) << ast.error();
std::vector<std::unique_ptr<sgf::Node>> trees;
ASSERT_TRUE(GetTrees(ast, &trees));
ASSERT_EQ(1, trees.size());
EXPECT_EQ("aa", trees[0]->move.c.ToSgf());
EXPECT_EQ("test [?]: comment", trees[0]->comment);
ASSERT_EQ(1, trees[0]->children.size());
EXPECT_EQ("bb", trees[0]->children[0]->move.c.ToSgf());
EXPECT_EQ("]", trees[0]->children[0]->comment);
}
} // namespace
} // namespace sgf
} // namespace minigo