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// (C) Copyright 2017, Google Inc.
// 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 <string>
#include <utility>
#include "absl/strings/str_format.h" // for absl::StrFormat
#include "include_gunit.h"
#include "serialis.h"
#include "shapetable.h"
#include "unicharset.h"
namespace tesseract {
#ifndef DISABLED_LEGACY_ENGINE
static std::string TmpNameToPath(const std::string& name) {
return file::JoinPath(FLAGS_test_tmpdir, name);
}
// Sets up a simple shape with some unichars.
static void Setup352(int font_id, Shape* shape) {
shape->AddToShape(3, font_id);
shape->AddToShape(5, font_id);
shape->AddToShape(2, font_id);
}
// Verifies some properties of the 352 shape.
static void Expect352(int font_id, const Shape& shape) {
EXPECT_EQ(3, shape.size());
EXPECT_TRUE(shape.ContainsUnichar(2));
EXPECT_TRUE(shape.ContainsUnichar(3));
EXPECT_TRUE(shape.ContainsUnichar(5));
EXPECT_FALSE(shape.ContainsUnichar(1));
EXPECT_TRUE(shape.ContainsUnicharAndFont(2, font_id));
EXPECT_FALSE(shape.ContainsUnicharAndFont(2, font_id - 1));
EXPECT_FALSE(shape.ContainsUnicharAndFont(font_id, 2));
// It should be a subset of itself.
EXPECT_TRUE(shape.IsSubsetOf(shape));
}
#endif
// The fixture for testing Shape.
class ShapeTest : public testing::Test {
protected:
void SetUp() {
std::locale::global(std::locale(""));
file::MakeTmpdir();
}
};
// Tests that a Shape works as expected for all the basic functions.
TEST_F(ShapeTest, BasicTest) {
#ifdef DISABLED_LEGACY_ENGINE
// Skip test because Shape is missing.
GTEST_SKIP();
#else
Shape shape1;
EXPECT_EQ(0, shape1.size());
Setup352(101, &shape1);
Expect352(101, shape1);
// It should still work after file I/O.
std::string filename = TmpNameToPath("shapefile");
FILE* fp = fopen(filename.c_str(), "wb");
ASSERT_TRUE(fp != nullptr);
EXPECT_TRUE(shape1.Serialize(fp));
fclose(fp);
TFile tfp;
EXPECT_TRUE(tfp.Open(filename.c_str(), nullptr));
Shape shape2;
EXPECT_TRUE(shape2.DeSerialize(&tfp));
Expect352(101, shape2);
// They should be subsets of each other.
EXPECT_TRUE(shape1.IsSubsetOf(shape2));
EXPECT_TRUE(shape2.IsSubsetOf(shape1));
// They should be equal unichars.
EXPECT_TRUE(shape1.IsEqualUnichars(&shape2));
// and still pass afterwards.
Expect352(101, shape1);
Expect352(101, shape2);
#endif
}
// Tests AddShape separately, as it takes quite a bit of work.
TEST_F(ShapeTest, AddShapeTest) {
#ifdef DISABLED_LEGACY_ENGINE
// Skip test because Shape is missing.
GTEST_SKIP();
#else
Shape shape1;
Setup352(101, &shape1);
Expect352(101, shape1);
// Now setup a different shape with different content.
Shape shape2;
shape2.AddToShape(3, 101); // Duplicates shape1.
shape2.AddToShape(5, 110); // Different font to shape1.
shape2.AddToShape(7, 101); // Different unichar to shape1.
// They should NOT be subsets of each other.
EXPECT_FALSE(shape1.IsSubsetOf(shape2));
EXPECT_FALSE(shape2.IsSubsetOf(shape1));
// Now add shape2 to shape1.
shape1.AddShape(shape2);
// Test subsets again.
EXPECT_FALSE(shape1.IsSubsetOf(shape2));
EXPECT_TRUE(shape2.IsSubsetOf(shape1));
EXPECT_EQ(4, shape1.size());
EXPECT_FALSE(shape1.ContainsUnichar(1));
EXPECT_TRUE(shape1.ContainsUnicharAndFont(5, 101));
EXPECT_TRUE(shape1.ContainsUnicharAndFont(5, 110));
EXPECT_FALSE(shape1.ContainsUnicharAndFont(3, 110));
EXPECT_FALSE(shape1.ContainsUnicharAndFont(7, 110));
EXPECT_FALSE(shape1.IsEqualUnichars(&shape2));
#endif
}
// The fixture for testing Shape.
class ShapeTableTest : public testing::Test {};
// Tests that a Shape works as expected for all the basic functions.
TEST_F(ShapeTableTest, FullTest) {
#ifdef DISABLED_LEGACY_ENGINE
// Skip test because Shape is missing.
GTEST_SKIP();
#else
Shape shape1;
Setup352(101, &shape1);
// Build a shape table with the same data, but in separate shapes.
UNICHARSET unicharset;
unicharset.unichar_insert(" ");
for (int i = 1; i <= 10; ++i) {
std::string class_str = absl::StrFormat("class%d", i);
unicharset.unichar_insert(class_str.c_str());
}
ShapeTable st(unicharset);
EXPECT_EQ(0, st.AddShape(3, 101));
EXPECT_EQ(1, st.AddShape(5, 101));
EXPECT_EQ(2, st.AddShape(2, 101));
EXPECT_EQ(3, st.NumShapes());
Expect352(101, shape1);
EXPECT_EQ(3, st.AddShape(shape1));
for (int i = 0; i < 3; ++i) {
EXPECT_FALSE(st.MutableShape(i)->IsEqualUnichars(&shape1));
}
EXPECT_TRUE(st.MutableShape(3)->IsEqualUnichars(&shape1));
EXPECT_TRUE(st.AnyMultipleUnichars());
st.DeleteShape(3);
EXPECT_FALSE(st.AnyMultipleUnichars());
// Now merge to make a single shape like shape1.
EXPECT_EQ(1, st.MasterUnicharCount(0));
st.MergeShapes(0, 1);
EXPECT_EQ(3, st.MergedUnicharCount(1, 2));
st.MergeShapes(1, 2);
for (int i = 0; i < 3; ++i) {
EXPECT_EQ(3, st.MasterUnicharCount(i));
// Master font count is the sum of all the font counts in the shape, not
// the actual number of different fonts in the shape.
EXPECT_EQ(3, st.MasterFontCount(i));
}
EXPECT_EQ(0, st.MasterDestinationIndex(1));
EXPECT_EQ(0, st.MasterDestinationIndex(2));
ShapeTable st2;
st2.AppendMasterShapes(st, nullptr);
EXPECT_EQ(1, st.NumMasterShapes());
EXPECT_EQ(1, st2.NumShapes());
EXPECT_TRUE(st2.MutableShape(0)->IsEqualUnichars(&shape1));
EXPECT_TRUE(st2.AnyMultipleUnichars());
#endif
}
} // namespace
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