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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "utils/normalization.h"
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#include <string>
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#include "utils/base/integral_types.h"
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#include "utils/utf8/unicodetext.h"
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#include "utils/utf8/unilib.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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namespace libtextclassifier3 {
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namespace {
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using testing::Eq;
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class NormalizationTest : public testing::Test {
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protected:
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NormalizationTest() : INIT_UNILIB_FOR_TESTING(unilib_) {}
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std::string NormalizeTextCodepointWise(const std::string& text,
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const int32 codepointwise_ops) {
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return libtextclassifier3::NormalizeTextCodepointWise(
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unilib_, codepointwise_ops,
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UTF8ToUnicodeText(text, /*do_copy=*/false))
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.ToUTF8String();
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}
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UniLib unilib_;
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};
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TEST_F(NormalizationTest, ReturnsIdenticalStringWhenNoNormalization) {
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EXPECT_THAT(NormalizeTextCodepointWise(
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"Never gonna let you down.",
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NormalizationOptions_::CodepointwiseNormalizationOp_NONE),
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Eq("Never gonna let you down."));
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}
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#if !defined(TC3_UNILIB_DUMMY)
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TEST_F(NormalizationTest, DropsWhitespace) {
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Never gonna let you down.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_WHITESPACE),
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Eq("Nevergonnaletyoudown."));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Never\tgonna\t\tlet\tyou\tdown.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_WHITESPACE),
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Eq("Nevergonnaletyoudown."));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Never\u2003gonna\u2003let\u2003you\u2003down.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_WHITESPACE),
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Eq("Nevergonnaletyoudown."));
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}
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TEST_F(NormalizationTest, DropsPunctuation) {
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Never gonna let you down.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_PUNCTUATION),
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Eq("Never gonna let you down"));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"αʹ. Σημεῖόν ἐστιν, οὗ μέρος οὐθέν.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_PUNCTUATION),
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Eq("αʹ Σημεῖόν ἐστιν οὗ μέρος οὐθέν"));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"978—3—16—148410—0",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_PUNCTUATION),
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Eq("9783161484100"));
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}
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TEST_F(NormalizationTest, LowercasesUnicodeText) {
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"αʹ. Σημεῖόν ἐστιν, οὗ μέρος οὐθέν.",
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NormalizationOptions_::CodepointwiseNormalizationOp_LOWERCASE),
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Eq("αʹ. σημεῖόν ἐστιν, οὗ μέρος οὐθέν."));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"αʹ. Σημεῖόν ἐστιν, οὗ μέρος οὐθέν.",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_WHITESPACE |
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NormalizationOptions_::CodepointwiseNormalizationOp_LOWERCASE),
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Eq("αʹ.σημεῖόνἐστιν,οὗμέροςοὐθέν."));
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}
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TEST_F(NormalizationTest, UppercasesUnicodeText) {
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Κανένας άνθρωπος δεν ξέρει",
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NormalizationOptions_::CodepointwiseNormalizationOp_UPPERCASE),
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Eq("ΚΑΝΈΝΑΣ ΆΝΘΡΩΠΟΣ ΔΕΝ ΞΈΡΕΙ"));
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EXPECT_THAT(
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NormalizeTextCodepointWise(
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"Κανένας άνθρωπος δεν ξέρει",
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NormalizationOptions_::CodepointwiseNormalizationOp_DROP_WHITESPACE |
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NormalizationOptions_::CodepointwiseNormalizationOp_UPPERCASE),
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Eq("ΚΑΝΈΝΑΣΆΝΘΡΩΠΟΣΔΕΝΞΈΡΕΙ"));
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}
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#endif
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} // namespace
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} // namespace libtextclassifier3
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