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Fix possible assertion violation in text.

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Fixes #31047.
This commit is contained in:
John Preston
2026-07-24 18:19:42 +04:00
parent 816bd7b677
commit 089b4ca9cb
5 changed files with 64 additions and 7 deletions
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Telegram/SourceFiles/tests/test_text.cpp
+41 -1
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@@ -438,7 +438,7 @@ void test(not_null<Ui::RpWindow*> window, not_null<Ui::RpWidget*> body) {
Expects(!HasEntityType(formulaMime.rich.entities, EntityType::CustomEmoji));
Expects(formulaMime.tags.size() == 1);
const auto expectedFormulaTag = TextForMimeDataTag{
.offset = formulaPosition,
.offset = int(formulaPosition),
.length = int(formulaReplacementText.size()),
.id = Ui::InputField::kTagIvMath,
};
@@ -464,6 +464,46 @@ void test(not_null<Ui::RpWindow*> window, not_null<Ui::RpWidget*> body) {
Expects(!formulaText->isOnlyCustomEmoji());
Expects(!formulaText->isIsolatedEmoji());
auto longFormulaSource = QString();
while (longFormulaSource.size() <= 4096) {
longFormulaSource.append(u"\\alpha+\\beta "_q);
}
auto longFormulaData = TextWithEntities();
longFormulaData.append(u"Before "_q);
const auto longFormulaPosition = longFormulaData.text.size();
longFormulaData.append(longFormulaSource);
longFormulaData.entities.push_back(EntityInText(
EntityType::CustomEmoji,
longFormulaPosition,
longFormulaSource.size(),
formulaEntityData));
longFormulaData.append(u" after"_q);
const auto longFormulaText = Ui::Text::String(
st::defaultTextStyle,
longFormulaData,
kMarkupTextOptions,
scale(64),
context);
Expects(longFormulaText.maxWidth() >= formulaImage.width());
Expects(longFormulaText.countHeight(scale(200)) > 0);
Expects(
longFormulaText.toString()
== u"Before "_q + formulaReplacementText + u" after"_q);
const auto longFormulaRender = RenderTextOffscreen(
longFormulaText,
scale(200));
Expects(HasPaintedPixels(longFormulaRender));
const auto longSpacedEmojiText = Ui::Text::String(
st::defaultTextStyle,
QString::fromUtf8("\xF0\x9F\x98\x80")
+ QString(4100, QChar(' '))
+ u"x"_q,
kDefaultTextOptions,
scale(64));
Expects(longSpacedEmojiText.maxWidth() > 0);
Expects(longSpacedEmojiText.countHeight(scale(200)) > 0);
auto controlData = TextWithEntities();
controlData.append(QChar::ObjectReplacementCharacter);
controlData.entities.push_back(EntityInText(