mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-03 17:29:04 +08:00
a61d7ac2ee
Signed-off-by: Stefan Weil <sw@weilnetz.de>
77 lines
3.3 KiB
C++
77 lines
3.3 KiB
C++
// (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 "validator.h"
|
|
|
|
#include "gmock/gmock.h" // for testing::ElementsAreArray
|
|
#include "include_gunit.h"
|
|
|
|
namespace tesseract {
|
|
|
|
class TestableValidator : public Validator {
|
|
public:
|
|
static ViramaScript TestableMostFrequentViramaScript(
|
|
const std::vector<char32>& utf32) {
|
|
return MostFrequentViramaScript(utf32);
|
|
}
|
|
};
|
|
|
|
// The majority of Validator is tested by the script-specific tests of its
|
|
// subclasses, but the MostFrequentViramaScript function is worth a unittest.
|
|
TEST(ValidatorTest, MostFrequentViramaScript) {
|
|
// The most frequent virama script should come out correct, despite
|
|
// distractions from other scripts.
|
|
EXPECT_EQ(ViramaScript::kTelugu,
|
|
TestableValidator::TestableMostFrequentViramaScript({0xc05}));
|
|
// It is still Telugu surrounded by Latin.
|
|
EXPECT_EQ(ViramaScript::kTelugu,
|
|
TestableValidator::TestableMostFrequentViramaScript(
|
|
{'a', 0xc05, 'b', 'c'}));
|
|
// But not still Telugu surrounded by Devanagari.
|
|
EXPECT_EQ(ViramaScript::kDevanagari,
|
|
TestableValidator::TestableMostFrequentViramaScript(
|
|
{0x905, 0xc05, 0x906, 0x907}));
|
|
EXPECT_EQ(ViramaScript::kKannada,
|
|
TestableValidator::TestableMostFrequentViramaScript(
|
|
{0xc85, 0xc05, 0xc86, 0xc87}));
|
|
EXPECT_EQ(ViramaScript::kBengali,
|
|
TestableValidator::TestableMostFrequentViramaScript(
|
|
{0x985, 0xc05, 0x986, 0x987}));
|
|
// Danda and double Danda don't count as Devanagari, as they are common.
|
|
EXPECT_EQ(ViramaScript::kTelugu,
|
|
TestableValidator::TestableMostFrequentViramaScript(
|
|
{0x964, 0xc05, 0x965, 0x965}));
|
|
}
|
|
|
|
// ValidateCleanAndSegment doesn't modify the input by much, but its
|
|
// transformation should be idempotent. (Doesn't change again if re-applied.)
|
|
TEST(ValidatorTest, Idempotency) {
|
|
std::vector<char32> str1(
|
|
{0xd24, 0xd23, 0xd32, 0xd4d, '\'', 0x200d, 0x200c, 0x200d, 0x200c});
|
|
std::vector<char32> str2(
|
|
{0xd24, 0xd23, 0xd32, 0xd4d, 0x200c, 0x200d, 0x200c, 0x200d, '\''});
|
|
std::vector<std::vector<char32>> result1, result2, result3, result4;
|
|
EXPECT_TRUE(Validator::ValidateCleanAndSegment(
|
|
GraphemeNormMode::kSingleString, true, str1, &result1));
|
|
EXPECT_TRUE(Validator::ValidateCleanAndSegment(
|
|
GraphemeNormMode::kSingleString, true, result1[0], &result2));
|
|
EXPECT_EQ(result1.size(), result2.size());
|
|
EXPECT_THAT(result2[0], testing::ElementsAreArray(result1[0]));
|
|
EXPECT_TRUE(Validator::ValidateCleanAndSegment(
|
|
GraphemeNormMode::kSingleString, true, str2, &result3));
|
|
EXPECT_TRUE(Validator::ValidateCleanAndSegment(
|
|
GraphemeNormMode::kSingleString, true, result3[0], &result4));
|
|
EXPECT_EQ(result3.size(), result4.size());
|
|
EXPECT_THAT(result4[0], testing::ElementsAreArray(result3[0]));
|
|
}
|
|
|
|
} // namespace tesseract
|