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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/accessibility/read_anything/read_aloud_traversal_utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/accessibility/ax_node_position.h"
class ReadAnythingReadAloudTraversalUtilsTest : public testing::Test {
protected:
ReadAnythingReadAloudTraversalUtilsTest() = default;
};
using testing::ElementsAre;
using testing::IsEmpty;
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetNextSentence_ReturnsCorrectIndex) {
const std::u16string first_sentence = u"This is a normal sentence. ";
const std::u16string second_sentence = u"This is a second sentence.";
const std::u16string sentence = first_sentence + second_sentence;
size_t index = GetNextSentence(sentence);
EXPECT_EQ(index, first_sentence.length());
EXPECT_EQ(sentence.substr(0, index), first_sentence);
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetNextSentence_OnlyOneSentence_ReturnsCorrectIndex) {
const std::u16string sentence = u"Hello, this is a normal sentence.";
size_t index = GetNextSentence(sentence);
EXPECT_EQ(index, sentence.length());
EXPECT_EQ(sentence.substr(0, index), sentence);
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetNextWord_ReturnsCorrectIndex) {
const std::u16string first_word = u"onomatopoeia ";
const std::u16string second_word = u"party";
const std::u16string segment = first_word + second_word;
size_t index = GetNextWord(segment);
EXPECT_EQ(index, first_word.length());
EXPECT_EQ(segment.substr(0, index), first_word);
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetNextWord_OnlyOneWord_ReturnsCorrectIndex) {
const std::u16string word = u"Happiness";
size_t index = GetNextWord(word);
EXPECT_EQ(index, word.length());
EXPECT_EQ(word.substr(0, index), word);
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
IsOpeningPunctuation_ReturnsExpected) {
char open_parentheses = '(';
char open_bracket = '[';
EXPECT_TRUE(IsOpeningPunctuation(open_parentheses));
EXPECT_TRUE(IsOpeningPunctuation(open_bracket));
// Closing puncutation shouldn't count.
char close_parentheses = ')';
char close_bracket = ']';
EXPECT_FALSE(IsOpeningPunctuation(close_parentheses));
EXPECT_FALSE(IsOpeningPunctuation(close_bracket));
}
testing::Matcher<ReadAloudTextSegment> TextSegmentMatcher(ui::AXNodeID id,
int text_start,
int text_end) {
return testing::AllOf(
::testing::Field(&ReadAloudTextSegment::id, ::testing::Eq(id)),
::testing::Field(&ReadAloudTextSegment::text_start,
::testing::Eq(text_start)),
::testing::Field(&ReadAloudTextSegment::text_end,
::testing::Eq(text_end)));
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetSegmentsForRange_OnlyOneNode_ReturnsCorrectSegments) {
a11y::ReadAloudCurrentGranularity current_granularity;
// Text indices: 012345678901234567890123
current_granularity.AddText(101, 12, 36, u"Ice-cream candy and cake");
std::vector<ReadAloudTextSegment> out =
current_granularity.GetSegmentsForRange(2, 5);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 14, 17)));
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetSegmentsForRange_TwoNodes_ReturnsCorrectSegments) {
a11y::ReadAloudCurrentGranularity current_granularity;
// Text indices: 01234567890123456
current_granularity.AddText(101, 12, 22, u"Ice-cream ");
current_granularity.AddText(102, 40, 55, u"candy and cakes");
std::vector<ReadAloudTextSegment> out;
// Within node 1
out = current_granularity.GetSegmentsForRange(0, 0);
EXPECT_THAT(out, IsEmpty()); // Empty return for empty range.
// Just "I" of "Ice-cream"
out = current_granularity.GetSegmentsForRange(0, 1);
// Should return the first segment, and offsets 12 to 13, since the first
// segment has a text_start of 12.
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 12, 13)));
// "Ice" of "Ice-cream"
out = current_granularity.GetSegmentsForRange(0, 3);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 12, 15)));
// Edge (final " " in "Ice-cream "), should return just that last offset (21
// to 22), since 22 is the end of the first segment.
out = current_granularity.GetSegmentsForRange(9, 10);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 21, 22)));
out = current_granularity.GetSegmentsForRange(10, 10);
EXPECT_THAT(out, IsEmpty()); // Empty return for empty range.
// Spanning both nodes. 4-9 is in the first node, and 10-15 is in the second.
// Since the first node starts with offset 12 and the second node with offset
// 40, the return value should consist of two elements:
// Node 1 with text range 12+4 to 12+8+1, and
// Node 2 with the range 40+0 to 40+5.
out = current_granularity.GetSegmentsForRange(4, 15);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 16, 22),
TextSegmentMatcher(102, 40, 45)));
// Within node 2.
out = current_granularity.GetSegmentsForRange(10, 11);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(102, 40, 41)));
out = current_granularity.GetSegmentsForRange(12, 14);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(102, 42, 44)));
// Edge (final "s" in "cakes").
out = current_granularity.GetSegmentsForRange(24, 25);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(102, 54, 55)));
// Beyond the end, should return empty.
out = current_granularity.GetSegmentsForRange(25, 26);
EXPECT_THAT(out, IsEmpty());
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetSegmentsForRange_ManyNodes_ReturnsCorrectSegments) {
a11y::ReadAloudCurrentGranularity current_granularity;
// Sentence and indices:
// Ice-cream candy and cakes and yummy treats for all of us, except you!
// 0123456789012345678901234567890123456789012345678901234567890123456789
current_granularity.AddText(101, 12, 22, u"Ice-cream ");
current_granularity.AddText(102, 40, 56, u"candy and cakes ");
current_granularity.AddText(103, 7, 28, u"and yummy treats for ");
current_granularity.AddText(104, 16, 26, u"all of us,");
current_granularity.AddText(105, 20, 31, u"except you!");
std::vector<ReadAloudTextSegment> out =
current_granularity.GetSegmentsForRange(4, 50);
EXPECT_THAT(out, ElementsAre(TextSegmentMatcher(101, 16, 22),
TextSegmentMatcher(102, 40, 56),
TextSegmentMatcher(103, 7, 28),
TextSegmentMatcher(104, 16, 19)));
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetSegmentsForRange_OutsideRange_ReturnsCorrectSegments) {
a11y::ReadAloudCurrentGranularity current_granularity;
// Sentence and indices:
// Ice-cream candy and cake
// 012345678901234567890123
current_granularity.AddText(101, 12, 36, u"Ice-cream candy and cake");
std::vector<ReadAloudTextSegment> out =
current_granularity.GetSegmentsForRange(38, 45);
EXPECT_THAT(out, IsEmpty());
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
CalculatePhrases_EmptyText_ReturnsEmptyResult) {
a11y::ReadAloudCurrentGranularity empty_sentence;
EXPECT_THAT(empty_sentence.phrase_boundaries, IsEmpty());
// CalculatePhrases should do nothing with an empty sentence.
empty_sentence.CalculatePlaceholderPhrases();
EXPECT_THAT(empty_sentence.phrase_boundaries, IsEmpty());
}
TEST_F(
ReadAnythingReadAloudTraversalUtilsTest,
CalculatePhrases_DifferentKindsOfText_ReturnsPhraseBoundariesEvery3Words) {
a11y::ReadAloudCurrentGranularity normal_sentence;
// Sentence and indices:
// Ice-cream candy and cake
// 012345678901234567890123
normal_sentence.AddText(101, 12, 36, u"Ice cream candy and cake");
// Before calculating phrases, phrase_boundaries is empty.
EXPECT_THAT(normal_sentence.phrase_boundaries, IsEmpty());
normal_sentence.CalculatePlaceholderPhrases();
// Boundaries at "I" of Ice and 'c' of cake.
EXPECT_THAT(normal_sentence.phrase_boundaries, ElementsAre(0, 16, 24));
a11y::ReadAloudCurrentGranularity sentence_with_hyphen;
// Sentence and indices:
// Ice-cream candy and cake
// 012345678901234567890123
sentence_with_hyphen.AddText(101, 12, 36, u"Ice-cream candy and cake");
sentence_with_hyphen.CalculatePlaceholderPhrases();
// Boundaries at "I" of Ice-cream and 'a' of and
EXPECT_THAT(sentence_with_hyphen.phrase_boundaries, ElementsAre(0, 16, 24));
// Length is a multiple of three.
a11y::ReadAloudCurrentGranularity sixword_sentence;
sixword_sentence.AddText(101, 41, 65, u"He is going to the mall.");
sixword_sentence.CalculatePlaceholderPhrases();
// Boundary every 3 words.
EXPECT_THAT(sixword_sentence.phrase_boundaries, ElementsAre(0, 12, 24));
// Short sentences.
a11y::ReadAloudCurrentGranularity short_sentence;
short_sentence.AddText(101, 12, 27, u"Ice-cream candy");
short_sentence.CalculatePlaceholderPhrases();
// Boundary only at "I" of Ice-cream
EXPECT_THAT(short_sentence.phrase_boundaries, ElementsAre(0, 15));
// Very short sentences.
a11y::ReadAloudCurrentGranularity oneword_sentence;
oneword_sentence.AddText(101, 12, 15, u"Yes");
oneword_sentence.CalculatePlaceholderPhrases();
EXPECT_THAT(oneword_sentence.phrase_boundaries, ElementsAre(0, 3));
}
TEST_F(ReadAnythingReadAloudTraversalUtilsTest,
GetPhraseIndex_ReturnsCorrectIndexes) {
a11y::ReadAloudCurrentGranularity current_granularity;
// Sentence and indices:
// Ice-cream candy and cakes and yummy treats for all of us, except you!
// 0123456789012345678901234567890123456789012345678901234567890123456789
current_granularity.AddText(101, 12, 22, u"Ice-cream ");
current_granularity.AddText(102, 40, 56, u"candy and cakes ");
current_granularity.AddText(103, 7, 28, u"and yummy treats for ");
current_granularity.AddText(104, 16, 26, u"all of us,");
current_granularity.AddText(105, 20, 31, u"except you!");
current_granularity.phrase_boundaries = {0, 26, 43, 58, 69};
// Before the start of the string returns -1.
EXPECT_THAT(current_granularity.GetPhraseIndex(-1), -1);
// Within the string, returns the closest phrase start.
EXPECT_THAT(current_granularity.GetPhraseIndex(0), 0);
EXPECT_THAT(current_granularity.GetPhraseIndex(1), 0);
EXPECT_THAT(current_granularity.GetPhraseIndex(10), 0);
EXPECT_THAT(current_granularity.GetPhraseIndex(25), 0);
EXPECT_THAT(current_granularity.GetPhraseIndex(26), 1);
EXPECT_THAT(current_granularity.GetPhraseIndex(30), 1);
EXPECT_THAT(current_granularity.GetPhraseIndex(42), 1);
EXPECT_THAT(current_granularity.GetPhraseIndex(43), 2);
EXPECT_THAT(current_granularity.GetPhraseIndex(57), 2);
EXPECT_THAT(current_granularity.GetPhraseIndex(58), 3);
EXPECT_THAT(current_granularity.GetPhraseIndex(68), 3);
// Past the end of the string returns the last index.
EXPECT_THAT(current_granularity.GetPhraseIndex(69), 4);
EXPECT_THAT(current_granularity.GetPhraseIndex(79), 4);
EXPECT_THAT(current_granularity.GetPhraseIndex(109), 4);
}
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