qt5base-lts/tests/auto/qsyntaxhighlighter/tst_qsyntaxhighlighter.cpp
Jyri Tahtela f9f395c28b Update licenseheader text in source files for qtbase Qt module
Updated version of LGPL and FDL licenseheaders.
Apply release phase licenseheaders for all source files.

Reviewed-by: Trust Me
2011-05-24 12:34:08 +03:00

550 lines
15 KiB
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/****************************************************************************
**
** 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"