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Diffstat (limited to 'tests/auto/gui/text/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp')
| -rw-r--r-- | tests/auto/gui/text/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/tests/auto/gui/text/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp b/tests/auto/gui/text/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp new file mode 100644 index 0000000000..24ade2dc91 --- /dev/null +++ b/tests/auto/gui/text/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp @@ -0,0 +1,549 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QtTest/QtTest> +#include <QTextDocument> +#include <QTextLayout> +#include <QDebug> +#include <QAbstractTextDocumentLayout> +#include <QSyntaxHighlighter> + +//TESTED_CLASS= +//TESTED_FILES= +// +class QTestDocumentLayout : public QAbstractTextDocumentLayout +{ + Q_OBJECT +public: + inline QTestDocumentLayout(QTextDocument *doc) + : QAbstractTextDocumentLayout(doc), documentChangedCalled(false) {} + + virtual void draw(QPainter *, const QAbstractTextDocumentLayout::PaintContext &) {} + + virtual int hitTest(const QPointF &, Qt::HitTestAccuracy ) const { return 0; } + + virtual void documentChanged(int, int, int) { documentChangedCalled = true; } + + virtual int pageCount() const { return 1; } + + virtual QSizeF documentSize() const { return QSize(); } + + virtual QRectF frameBoundingRect(QTextFrame *) const { return QRectF(); } + virtual QRectF blockBoundingRect(const QTextBlock &) const { return QRectF(); } + + bool documentChangedCalled; +}; + +class tst_QSyntaxHighlighter : public QObject +{ + Q_OBJECT +public: + inline tst_QSyntaxHighlighter() {} + +public slots: + void init(); + void cleanup(); + +private slots: + void basic(); + void basicTwo(); + void removeFormatsOnDelete(); + void emptyBlocks(); + void setCharFormat(); + void highlightOnInit(); + void stopHighlightingWhenStateDoesNotChange(); + void unindent(); + void highlightToEndOfDocument(); + void highlightToEndOfDocument2(); + void preservePreeditArea(); + void task108530(); + void avoidUnnecessaryRehighlight(); + void noContentsChangedDuringHighlight(); + void rehighlight(); + void rehighlightBlock(); + +private: + QTextDocument *doc; + QTestDocumentLayout *lout; + QTextCursor cursor; +}; + +void tst_QSyntaxHighlighter::init() +{ + doc = new QTextDocument; + lout = new QTestDocumentLayout(doc); + doc->setDocumentLayout(lout); + cursor = QTextCursor(doc); +} + +void tst_QSyntaxHighlighter::cleanup() +{ + delete doc; + doc = 0; +} + +class TestHighlighter : public QSyntaxHighlighter +{ +public: + inline TestHighlighter(const QList<QTextLayout::FormatRange> &fmts, QTextDocument *parent) + : QSyntaxHighlighter(parent), formats(fmts), highlighted(false), callCount(0) {} + inline TestHighlighter(QTextDocument *parent) + : QSyntaxHighlighter(parent), highlighted(false), callCount(0) {} + + virtual void highlightBlock(const QString &text) + { + for (int i = 0; i < formats.count(); ++i) { + const QTextLayout::FormatRange &range = formats.at(i); + setFormat(range.start, range.length, range.format); + } + highlighted = true; + highlightedText += text; + ++callCount; + } + + QList<QTextLayout::FormatRange> formats; + bool highlighted; + int callCount; + QString highlightedText; +}; + +QT_BEGIN_NAMESPACE +bool operator==(const QTextLayout::FormatRange &lhs, const QTextLayout::FormatRange &rhs) +{ + return lhs.start == rhs.start + && lhs.length == rhs.length + && lhs.format == rhs.format; +} +QT_END_NAMESPACE + +void tst_QSyntaxHighlighter::basic() +{ + QList<QTextLayout::FormatRange> formats; + QTextLayout::FormatRange range; + range.start = 0; + range.length = 2; + range.format.setForeground(Qt::blue); + formats.append(range); + + range.start = 4; + range.length = 2; + range.format.setFontItalic(true); + formats.append(range); + + range.start = 9; + range.length = 2; + range.format.setFontUnderline(true); + formats.append(range); + + TestHighlighter *hl = new TestHighlighter(formats, doc); + + lout->documentChangedCalled = false; + doc->setPlainText("Hello World"); + QVERIFY(hl->highlighted); + QVERIFY(lout->documentChangedCalled); + + QVERIFY(doc->begin().layout()->additionalFormats() == formats); +} + +class CommentTestHighlighter : public QSyntaxHighlighter +{ +public: + inline CommentTestHighlighter(QTextDocument *parent) + : QSyntaxHighlighter(parent), highlighted(false) {} + + inline void reset() + { + highlighted = false; + } + + virtual void highlightBlock(const QString &text) + { + QTextCharFormat commentFormat; + commentFormat.setForeground(Qt::darkGreen); + commentFormat.setFontWeight(QFont::StyleItalic); + commentFormat.setFontFixedPitch(true); + int textLength = text.length(); + + if (text.startsWith(QLatin1Char(';'))){ + // The entire line is a comment + setFormat(0, textLength, commentFormat); + highlighted = true; + } + } + bool highlighted; +}; + + +void tst_QSyntaxHighlighter::basicTwo() +{ + // Done for task 104409 + CommentTestHighlighter *hl = new CommentTestHighlighter(doc); + doc->setPlainText("; a test"); + QVERIFY(hl->highlighted); + QVERIFY(lout->documentChangedCalled); +} + +void tst_QSyntaxHighlighter::removeFormatsOnDelete() +{ + QList<QTextLayout::FormatRange> formats; + QTextLayout::FormatRange range; + range.start = 0; + range.length = 9; + range.format.setForeground(Qt::blue); + formats.append(range); + + TestHighlighter *hl = new TestHighlighter(formats, doc); + + lout->documentChangedCalled = false; + doc->setPlainText("Hello World"); + QVERIFY(hl->highlighted); + QVERIFY(lout->documentChangedCalled); + + lout->documentChangedCalled = false; + QVERIFY(!doc->begin().layout()->additionalFormats().isEmpty()); + delete hl; + QVERIFY(doc->begin().layout()->additionalFormats().isEmpty()); + QVERIFY(lout->documentChangedCalled); +} + +void tst_QSyntaxHighlighter::emptyBlocks() +{ + TestHighlighter *hl = new TestHighlighter(doc); + + cursor.insertText("Foo"); + cursor.insertBlock(); + cursor.insertBlock(); + hl->highlighted = false; + cursor.insertBlock(); + QVERIFY(hl->highlighted); +} + +void tst_QSyntaxHighlighter::setCharFormat() +{ + TestHighlighter *hl = new TestHighlighter(doc); + + cursor.insertText("FooBar"); + cursor.insertBlock(); + cursor.insertText("Blah"); + cursor.movePosition(QTextCursor::Start); + cursor.movePosition(QTextCursor::End, QTextCursor::KeepAnchor); + QTextCharFormat fmt; + fmt.setFontItalic(true); + hl->highlighted = false; + hl->callCount = 0; + cursor.mergeCharFormat(fmt); + QVERIFY(hl->highlighted); + QCOMPARE(hl->callCount, 2); +} + +void tst_QSyntaxHighlighter::highlightOnInit() +{ + cursor.insertText("Hello"); + cursor.insertBlock(); + cursor.insertText("World"); + + TestHighlighter *hl = new TestHighlighter(doc); + QTest::qWait(100); + QVERIFY(hl->highlighted); +} + +class StateTestHighlighter : public QSyntaxHighlighter +{ +public: + inline StateTestHighlighter(QTextDocument *parent) + : QSyntaxHighlighter(parent), state(0), highlighted(false) {} + + inline void reset() + { + highlighted = false; + state = 0; + } + + virtual void highlightBlock(const QString &text) + { + highlighted = true; + if (text == QLatin1String("changestate")) + setCurrentBlockState(state++); + } + + int state; + bool highlighted; +}; + +void tst_QSyntaxHighlighter::stopHighlightingWhenStateDoesNotChange() +{ + cursor.insertText("state"); + cursor.insertBlock(); + cursor.insertText("changestate"); + cursor.insertBlock(); + cursor.insertText("keepstate"); + cursor.insertBlock(); + cursor.insertText("changestate"); + cursor.insertBlock(); + cursor.insertText("changestate"); + + StateTestHighlighter *hl = new StateTestHighlighter(doc); + QTest::qWait(100); + QVERIFY(hl->highlighted); + + hl->reset(); + + // turn the text of the first block into 'changestate' + cursor.movePosition(QTextCursor::Start); + cursor.insertText("change"); + + // verify that we highlighted only to the 'keepstate' block, + // not beyond + QCOMPARE(hl->state, 2); +} + +void tst_QSyntaxHighlighter::unindent() +{ + const QString spaces(" "); + const QString text("Foobar"); + QString plainText; + for (int i = 0; i < 5; ++i) { + cursor.insertText(spaces + text); + cursor.insertBlock(); + + plainText += spaces; + plainText += text; + plainText += QLatin1Char('\n'); + } + QCOMPARE(doc->toPlainText(), plainText); + + TestHighlighter *hl = new TestHighlighter(doc); + hl->callCount = 0; + + cursor.movePosition(QTextCursor::Start); + cursor.beginEditBlock(); + + plainText.clear(); + for (int i = 0; i < 5; ++i) { + cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, 4); + cursor.removeSelectedText(); + cursor.movePosition(QTextCursor::NextBlock); + + plainText += text; + plainText += QLatin1Char('\n'); + } + + cursor.endEditBlock(); + QCOMPARE(doc->toPlainText(), plainText); + QCOMPARE(hl->callCount, 5); +} + +void tst_QSyntaxHighlighter::highlightToEndOfDocument() +{ + TestHighlighter *hl = new TestHighlighter(doc); + hl->callCount = 0; + + cursor.movePosition(QTextCursor::Start); + cursor.beginEditBlock(); + + cursor.insertText("Hello"); + cursor.insertBlock(); + cursor.insertBlock(); + cursor.insertText("World"); + cursor.insertBlock(); + + cursor.endEditBlock(); + + QCOMPARE(hl->callCount, 4); +} + +void tst_QSyntaxHighlighter::highlightToEndOfDocument2() +{ + TestHighlighter *hl = new TestHighlighter(doc); + hl->callCount = 0; + + cursor.movePosition(QTextCursor::End); + cursor.beginEditBlock(); + QTextBlockFormat fmt; + fmt.setAlignment(Qt::AlignLeft); + cursor.setBlockFormat(fmt); + cursor.insertText("Three\nLines\nHere"); + cursor.endEditBlock(); + + QCOMPARE(hl->callCount, 3); +} + +void tst_QSyntaxHighlighter::preservePreeditArea() +{ + QList<QTextLayout::FormatRange> formats; + QTextLayout::FormatRange range; + range.start = 0; + range.length = 8; + range.format.setForeground(Qt::blue); + formats << range; + range.start = 9; + range.length = 1; + range.format.setForeground(Qt::red); + formats << range; + TestHighlighter *hl = new TestHighlighter(formats, doc); + + doc->setPlainText("Hello World"); + cursor.movePosition(QTextCursor::Start); + + QTextLayout *layout = cursor.block().layout(); + + layout->setPreeditArea(5, QString("foo")); + range.start = 5; + range.length = 3; + range.format.setFontUnderline(true); + formats.clear(); + formats << range; + + hl->callCount = 0; + + cursor.beginEditBlock(); + layout->setAdditionalFormats(formats); + cursor.endEditBlock(); + + QCOMPARE(hl->callCount, 1); + + formats = layout->additionalFormats(); + QCOMPARE(formats.count(), 3); + + range = formats.at(0); + + QCOMPARE(range.start, 5); + QCOMPARE(range.length, 3); + QVERIFY(range.format.fontUnderline()); + + range = formats.at(1); + QCOMPARE(range.start, 0); + QCOMPARE(range.length, 8 + 3); + + range = formats.at(2); + QCOMPARE(range.start, 9 + 3); + QCOMPARE(range.length, 1); +} + +void tst_QSyntaxHighlighter::task108530() +{ + TestHighlighter *hl = new TestHighlighter(doc); + + cursor.insertText("test"); + hl->callCount = 0; + hl->highlightedText.clear(); + cursor.movePosition(QTextCursor::Start); + cursor.insertBlock(); + + QCOMPARE(hl->highlightedText, QString("test")); + QCOMPARE(hl->callCount, 2); +} + +void tst_QSyntaxHighlighter::avoidUnnecessaryRehighlight() +{ + TestHighlighter *hl = new TestHighlighter(doc); + QVERIFY(!hl->highlighted); + + doc->setPlainText("Hello World"); + QVERIFY(hl->highlighted); + + hl->highlighted = false; + QTest::qWait(100); + QVERIFY(!hl->highlighted); +} + +void tst_QSyntaxHighlighter::noContentsChangedDuringHighlight() +{ + QList<QTextLayout::FormatRange> formats; + QTextLayout::FormatRange range; + range.start = 0; + range.length = 10; + range.format.setForeground(Qt::blue); + formats.append(range); + + TestHighlighter *hl = new TestHighlighter(formats, doc); + + lout->documentChangedCalled = false; + QTextCursor cursor(doc); + + QSignalSpy contentsChangedSpy(doc, SIGNAL(contentsChanged())); + cursor.insertText("Hello World"); + + QCOMPARE(contentsChangedSpy.count(), 1); + QVERIFY(hl->highlighted); + QVERIFY(lout->documentChangedCalled); +} + +void tst_QSyntaxHighlighter::rehighlight() +{ + TestHighlighter *hl = new TestHighlighter(doc); + hl->callCount = 0; + doc->setPlainText("Hello"); + hl->callCount = 0; + hl->rehighlight(); + QCOMPARE(hl->callCount, 1); +} + +void tst_QSyntaxHighlighter::rehighlightBlock() +{ + TestHighlighter *hl = new TestHighlighter(doc); + + cursor.movePosition(QTextCursor::Start); + cursor.beginEditBlock(); + cursor.insertText("Hello"); + cursor.insertBlock(); + cursor.insertText("World"); + cursor.endEditBlock(); + + hl->callCount = 0; + hl->highlightedText.clear(); + QTextBlock block = doc->begin(); + hl->rehighlightBlock(block); + + QCOMPARE(hl->highlightedText, QString("Hello")); + QCOMPARE(hl->callCount, 1); + + hl->callCount = 0; + hl->highlightedText.clear(); + hl->rehighlightBlock(block.next()); + + QCOMPARE(hl->highlightedText, QString("World")); + QCOMPARE(hl->callCount, 1); +} + +QTEST_MAIN(tst_QSyntaxHighlighter) +#include "tst_qsyntaxhighlighter.moc" |