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https://github.com/tesseract-ocr/tesseract.git
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70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
#include "tesseract/ccutil/unicharset.h"
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#include "tesseract/dict/dawg.h"
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#include "tesseract/dict/trie.h"
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#include "util/utf8/public/unicodetext.h"
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namespace {
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class TatweelTest : public ::testing::Test {
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protected:
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void SetUp() {
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std::locale::global(std::locale(""));
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}
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TatweelTest() {
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string filename = TestDataNameToPath("ara.wordlist");
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string wordlist;
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CHECK_OK(file::GetContents(filename, &wordlist, file::Defaults()));
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// Put all the unicodes in the unicharset_.
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UnicodeText text;
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text.PointToUTF8(wordlist.data(), wordlist.size());
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int num_tatweel = 0;
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for (auto it = text.begin(); it != text.end(); ++it) {
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string utf8 = it.get_utf8_string();
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if (utf8.find(u8"\u0640") != string::npos) ++num_tatweel;
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unicharset_.unichar_insert(utf8.c_str());
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}
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LOG(INFO) << "Num tatweels in source data=" << num_tatweel;
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EXPECT_GT(num_tatweel, 0);
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}
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string TestDataNameToPath(const string& name) {
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return file::JoinPath(FLAGS_test_srcdir, "testdata/" + name);
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}
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UNICHARSET unicharset_;
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};
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TEST_F(TatweelTest, UnicharsetIgnoresTatweel) {
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// This test verifies that the unicharset ignores the Tatweel character.
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for (int i = 0; i < unicharset_.size(); ++i) {
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const char* utf8 = unicharset_.id_to_unichar(i);
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EXPECT_EQ(strstr(utf8, u8"\u0640"), nullptr);
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}
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}
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TEST_F(TatweelTest, DictIgnoresTatweel) {
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// This test verifies that the dictionary ignores the Tatweel character.
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tesseract::Trie trie(tesseract::DAWG_TYPE_WORD, "ara", SYSTEM_DAWG_PERM,
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unicharset_.size(), 0);
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string filename = TestDataNameToPath("ara.wordlist");
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EXPECT_TRUE(trie.read_and_add_word_list(
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filename.c_str(), unicharset_, tesseract::Trie::RRP_REVERSE_IF_HAS_RTL));
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EXPECT_EQ(0, trie.check_for_words(filename.c_str(), unicharset_, false));
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}
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TEST_F(TatweelTest, UnicharsetLoadKeepsTatweel) {
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// This test verifies that a load of an existing unicharset keeps any
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// existing tatweel for backwards compatibility.
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string filename = TestDataNameToPath("ara.unicharset");
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EXPECT_TRUE(unicharset_.load_from_file(filename.c_str()));
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int num_tatweel = 0;
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for (int i = 0; i < unicharset_.size(); ++i) {
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const char* utf8 = unicharset_.id_to_unichar(i);
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if (strstr(utf8, u8"\u0640") != nullptr) ++num_tatweel;
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}
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LOG(INFO) << "Num tatweels in unicharset=" << num_tatweel;
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EXPECT_EQ(num_tatweel, 4);
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}
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} // namespace
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