mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-15 17:49:29 +08:00
93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
|
||
#include "tesseract/training/ligature_table.h"
|
||
|
||
#include "tesseract/training/commandlineflags.h"
|
||
#include "tesseract/training/fileio.h"
|
||
#include "tesseract/training/pango_font_info.h"
|
||
|
||
DECLARE_STRING_PARAM_FLAG(fonts_dir);
|
||
DECLARE_STRING_PARAM_FLAG(fontconfig_tmpdir);
|
||
|
||
namespace {
|
||
|
||
using tesseract::File;
|
||
using tesseract::LigatureTable;
|
||
using tesseract::PangoFontInfo;
|
||
|
||
const char kEngNonLigatureText[] = "fidelity effigy ſteep";
|
||
// Same as above text, but with "fi" in the first word and "ffi" in the second
|
||
// word replaced with their respective ligatures.
|
||
const char kEngLigatureText[] = "fidelity effigy ſteep";
|
||
// Same as kEngLigatureText but with "fi" in both words replaced with their
|
||
// ligature. The test Verdana font does not support the "ffi" or "ſt" ligature.
|
||
const char kRenderableEngLigatureText[] = "fidelity effigy ſteep";
|
||
|
||
class LigatureTableTest : public ::testing::Test {
|
||
protected:
|
||
static void SetUpTestCase() {
|
||
FLAGS_fonts_dir = File::JoinPath(FLAGS_test_srcdir, "testdata");
|
||
FLAGS_fontconfig_tmpdir = FLAGS_test_tmpdir;
|
||
}
|
||
void SetUp() { lig_table_ = LigatureTable::Get(); }
|
||
LigatureTable* lig_table_;
|
||
};
|
||
|
||
TEST_F(LigatureTableTest, DoesFillLigatureTables) {
|
||
EXPECT_GT(lig_table_->norm_to_lig_table().size(), 0);
|
||
EXPECT_GT(lig_table_->lig_to_norm_table().size(), 0);
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, DoesAddLigatures) {
|
||
EXPECT_STREQ(kEngLigatureText,
|
||
lig_table_->AddLigatures(kEngNonLigatureText, nullptr).c_str());
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, DoesAddLigaturesWithSupportedFont) {
|
||
PangoFontInfo font;
|
||
EXPECT_TRUE(font.ParseFontDescriptionName("Verdana"));
|
||
EXPECT_STREQ(kRenderableEngLigatureText,
|
||
lig_table_->AddLigatures(kEngNonLigatureText, &font).c_str());
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, DoesNotAddLigaturesWithUnsupportedFont) {
|
||
PangoFontInfo font;
|
||
EXPECT_TRUE(font.ParseFontDescriptionName("Lohit Hindi"));
|
||
EXPECT_STREQ(kEngNonLigatureText,
|
||
lig_table_->AddLigatures(kEngNonLigatureText, &font).c_str());
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, DoesRemoveLigatures) {
|
||
EXPECT_STREQ(kEngNonLigatureText,
|
||
lig_table_->RemoveLigatures(kEngLigatureText).c_str());
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, TestCustomLigatures) {
|
||
const char* kTestCases[] = {
|
||
"act", "a\uE003", "publiſh", "publi\uE006", "ſince",
|
||
"\uE007nce", "aſleep", "a\uE008eep", "neceſſary", "nece\uE009ary",
|
||
};
|
||
for (int i = 0; i < ARRAYSIZE(kTestCases); i += 2) {
|
||
EXPECT_STREQ(kTestCases[i + 1],
|
||
lig_table_->AddLigatures(kTestCases[i], nullptr).c_str());
|
||
EXPECT_STREQ(kTestCases[i],
|
||
lig_table_->RemoveLigatures(kTestCases[i + 1]).c_str());
|
||
EXPECT_STREQ(kTestCases[i],
|
||
lig_table_->RemoveCustomLigatures(kTestCases[i + 1]).c_str());
|
||
}
|
||
}
|
||
|
||
TEST_F(LigatureTableTest, TestRemovesCustomLigatures) {
|
||
const char* kTestCases[] = {
|
||
"fiction",
|
||
"fi\uE003ion",
|
||
"fiction",
|
||
};
|
||
for (int i = 0; i < ARRAYSIZE(kTestCases); i += 3) {
|
||
EXPECT_STREQ(kTestCases[i + 1],
|
||
lig_table_->AddLigatures(kTestCases[i], nullptr).c_str());
|
||
EXPECT_STREQ(kTestCases[i + 2],
|
||
lig_table_->RemoveCustomLigatures(kTestCases[i + 1]).c_str());
|
||
}
|
||
}
|
||
} // namespace
|