qtdeclarative/tests/auto/qml/qv4debugger/tst_qv4debugger.cpp

684 lines
23 KiB
C++

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
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** rights. These rights are described in the Digia Qt LGPL Exception
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** $QT_END_LICENSE$
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****************************************************************************/
#include <QtTest/QtTest>
#include <QJSEngine>
#include <QQmlEngine>
#include <QQmlComponent>
#include <private/qv4engine_p.h>
#include <private/qv4debugging_p.h>
#include <private/qv8engine_p.h>
using namespace QV4;
using namespace QV4::Debugging;
typedef QV4::ReturnedValue (*InjectedFunction)(QV4::CallContext*);
Q_DECLARE_METATYPE(InjectedFunction)
static bool waitForSignal(QObject* obj, const char* signal, int timeout = 10000)
{
QEventLoop loop;
QObject::connect(obj, signal, &loop, SLOT(quit()));
QTimer timer;
QSignalSpy timeoutSpy(&timer, SIGNAL(timeout()));
if (timeout > 0) {
QObject::connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
timer.setSingleShot(true);
timer.start(timeout);
}
loop.exec();
return timeoutSpy.isEmpty();
}
class TestEngine : public QJSEngine
{
Q_OBJECT
public:
TestEngine()
{
qMetaTypeId<InjectedFunction>();
}
Q_INVOKABLE void evaluate(const QString &script, const QString &fileName, int lineNumber = 1)
{
QJSEngine::evaluate(script, fileName, lineNumber);
emit evaluateFinished();
}
QV4::ExecutionEngine *v4Engine() { return QV8Engine::getV4(this); }
Q_INVOKABLE void injectFunction(const QString &functionName, InjectedFunction injectedFunction)
{
QV4::ExecutionEngine *v4 = v4Engine();
QV4::Scope scope(v4);
QV4::ScopedString name(scope, v4->newString(functionName));
QV4::ScopedContext ctx(scope, v4->rootContext());
QV4::ScopedValue function(scope, BuiltinFunction::create(ctx, name, injectedFunction));
v4->globalObject()->put(name, function);
}
signals:
void evaluateFinished();
};
namespace {
class TestCollector: public QV4::Debugging::Debugger::Collector
{
public:
TestCollector(QV4::ExecutionEngine *engine)
: Collector(engine)
, destination(0)
{}
virtual ~TestCollector() {}
void setDestination(QVariantMap *dest)
{ destination = dest; }
protected:
virtual void addUndefined(const QString &name)
{
destination->insert(name, QStringLiteral("undefined")); // TODO: add a user-defined type for this
}
virtual void addNull(const QString &name)
{
destination->insert(name, QStringLiteral("null")); // TODO: add a user-defined type for this
}
virtual void addBoolean(const QString &name, bool value)
{
destination->insert(name, value);
}
virtual void addString(const QString &name, const QString &value)
{
destination->insert(name, value);
}
virtual void addObject(const QString &name, const QV4::Value &value)
{
QV4::Scope scope(engine());
QV4::ScopedObject obj(scope, value.asObject());
QVariantMap props, *prev = &props;
qSwap(destination, prev);
collect(obj);
qSwap(destination, prev);
destination->insert(name, props);
}
virtual void addInteger(const QString &name, int value)
{
destination->insert(name, QVariant::fromValue<double>(static_cast<double>(value)));
}
virtual void addDouble(const QString &name, double value)
{
destination->insert(name, QVariant::fromValue<double>(value));
}
private:
QVariantMap *destination;
};
}
class TestAgent : public QV4::Debugging::DebuggerAgent
{
Q_OBJECT
public:
TestAgent()
: m_wasPaused(false)
, m_captureContextInfo(false)
{
}
virtual void debuggerPaused(Debugger *debugger, PauseReason reason)
{
Q_ASSERT(m_debuggers.count() == 1 && m_debuggers.first() == debugger);
m_wasPaused = true;
m_pauseReason = reason;
m_statesWhenPaused << debugger->currentExecutionState();
TestCollector collector(debugger->engine());
QVariantMap tmp;
collector.setDestination(&tmp);
debugger->collectThrownValue(&collector);
m_thrownValue = tmp["exception"];
foreach (const TestBreakPoint &bp, m_breakPointsToAddWhenPaused)
debugger->addBreakPoint(bp.fileName, bp.lineNumber);
m_breakPointsToAddWhenPaused.clear();
m_stackTrace = debugger->stackTrace();
while (!m_expressionRequests.isEmpty()) {
ExpressionRequest request = m_expressionRequests.takeFirst();
QVariantMap result;
collector.setDestination(&result);
debugger->evaluateExpression(request.frameNr, request.expression, &collector);
m_expressionResults << result[QString::fromLatin1("body")];
}
if (m_captureContextInfo)
captureContextInfo(debugger);
debugger->resume(Debugger::FullThrottle);
}
virtual void sourcesCollected(Debugger *debugger, QStringList sources, int requestSequenceNr)
{
Q_UNUSED(debugger);
Q_UNUSED(sources);
Q_UNUSED(requestSequenceNr);
}
int debuggerCount() const { return m_debuggers.count(); }
struct TestBreakPoint
{
TestBreakPoint() : lineNumber(-1) {}
TestBreakPoint(const QString &fileName, int lineNumber)
: fileName(fileName), lineNumber(lineNumber) {}
QString fileName;
int lineNumber;
};
void captureContextInfo(Debugger *debugger)
{
TestCollector collector(debugger->engine());
for (int i = 0, ei = m_stackTrace.size(); i != ei; ++i) {
QVariantMap args;
collector.setDestination(&args);
debugger->collectArgumentsInContext(&collector, i);
m_capturedArguments.append(args);
QVariantMap locals;
collector.setDestination(&locals);
debugger->collectLocalsInContext(&collector, i);
m_capturedLocals.append(locals);
}
}
bool m_wasPaused;
PauseReason m_pauseReason;
bool m_captureContextInfo;
QList<Debugger::ExecutionState> m_statesWhenPaused;
QList<TestBreakPoint> m_breakPointsToAddWhenPaused;
QVector<QV4::StackFrame> m_stackTrace;
QList<QVariantMap> m_capturedArguments;
QList<QVariantMap> m_capturedLocals;
QVariant m_thrownValue;
struct ExpressionRequest {
QString expression;
int frameNr;
};
QVector<ExpressionRequest> m_expressionRequests;
QVector<QVariant> m_expressionResults;
// Utility methods:
void dumpStackTrace() const
{
qDebug() << "Stack depth:" << m_stackTrace.size();
foreach (const QV4::StackFrame &frame, m_stackTrace)
qDebug("\t%s (%s:%d:%d)", qPrintable(frame.function), qPrintable(frame.source),
frame.line, frame.column);
}
};
class tst_qv4debugger : public QObject
{
Q_OBJECT
private slots:
void init();
void cleanup();
// breakpoints:
void breakAnywhere();
void pendingBreakpoint();
void liveBreakPoint();
void removePendingBreakPoint();
void addBreakPointWhilePaused();
void removeBreakPointForNextInstruction();
void conditionalBreakPoint();
void conditionalBreakPointInQml();
// context access:
void readArguments();
void readLocals();
void readObject();
void readContextInAllFrames();
// exceptions:
void pauseOnThrow();
void breakInCatch();
void breakInWith();
void evaluateExpression();
private:
void evaluateJavaScript(const QString &script, const QString &fileName, int lineNumber = 1)
{
QMetaObject::invokeMethod(m_engine, "evaluate", Qt::QueuedConnection,
Q_ARG(QString, script), Q_ARG(QString, fileName),
Q_ARG(int, lineNumber));
waitForSignal(m_engine, SIGNAL(evaluateFinished()), /*timeout*/0);
}
TestEngine *m_engine;
QV4::ExecutionEngine *m_v4;
TestAgent *m_debuggerAgent;
QThread *m_javaScriptThread;
};
void tst_qv4debugger::init()
{
m_javaScriptThread = new QThread;
m_engine = new TestEngine;
m_v4 = m_engine->v4Engine();
m_v4->enableDebugger();
m_engine->moveToThread(m_javaScriptThread);
m_javaScriptThread->start();
m_debuggerAgent = new TestAgent;
m_debuggerAgent->addDebugger(m_v4->debugger);
}
void tst_qv4debugger::cleanup()
{
m_javaScriptThread->exit();
m_javaScriptThread->wait();
delete m_engine;
delete m_javaScriptThread;
m_engine = 0;
m_v4 = 0;
QCOMPARE(m_debuggerAgent->debuggerCount(), 0);
delete m_debuggerAgent;
m_debuggerAgent = 0;
}
void tst_qv4debugger::breakAnywhere()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
m_debuggerAgent->pauseAll();
evaluateJavaScript(script, "testFile");
QVERIFY(m_debuggerAgent->m_wasPaused);
}
void tst_qv4debugger::pendingBreakpoint()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
m_debuggerAgent->addBreakPoint("testfile", 2);
evaluateJavaScript(script, "testfile");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(state.fileName, QString("testfile"));
QCOMPARE(state.lineNumber, 2);
}
void tst_qv4debugger::liveBreakPoint()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
m_debuggerAgent->m_breakPointsToAddWhenPaused << TestAgent::TestBreakPoint("liveBreakPoint", 3);
m_debuggerAgent->pauseAll();
evaluateJavaScript(script, "liveBreakPoint");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 2);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.at(1);
QCOMPARE(state.fileName, QString("liveBreakPoint"));
QCOMPARE(state.lineNumber, 3);
}
void tst_qv4debugger::removePendingBreakPoint()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
int id = m_debuggerAgent->addBreakPoint("removePendingBreakPoint", 2);
m_debuggerAgent->removeBreakPoint(id);
evaluateJavaScript(script, "removePendingBreakPoint");
QVERIFY(!m_debuggerAgent->m_wasPaused);
}
void tst_qv4debugger::addBreakPointWhilePaused()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
m_debuggerAgent->addBreakPoint("addBreakPointWhilePaused", 1);
m_debuggerAgent->m_breakPointsToAddWhenPaused << TestAgent::TestBreakPoint("addBreakPointWhilePaused", 2);
evaluateJavaScript(script, "addBreakPointWhilePaused");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 2);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.at(0);
QCOMPARE(state.fileName, QString("addBreakPointWhilePaused"));
QCOMPARE(state.lineNumber, 1);
state = m_debuggerAgent->m_statesWhenPaused.at(1);
QCOMPARE(state.fileName, QString("addBreakPointWhilePaused"));
QCOMPARE(state.lineNumber, 2);
}
static QV4::ReturnedValue someCall(QV4::CallContext *ctx)
{
ctx->d()->engine->debugger->removeBreakPoint("removeBreakPointForNextInstruction", 2);
return QV4::Encode::undefined();
}
void tst_qv4debugger::removeBreakPointForNextInstruction()
{
QString script =
"someCall();\n"
"var i = 42;";
QMetaObject::invokeMethod(m_engine, "injectFunction", Qt::BlockingQueuedConnection,
Q_ARG(QString, "someCall"), Q_ARG(InjectedFunction, someCall));
m_debuggerAgent->addBreakPoint("removeBreakPointForNextInstruction", 2);
evaluateJavaScript(script, "removeBreakPointForNextInstruction");
QVERIFY(!m_debuggerAgent->m_wasPaused);
}
void tst_qv4debugger::conditionalBreakPoint()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"function test() {\n"
" for (var i = 0; i < 15; ++i) {\n"
" var x = i;\n"
" }\n"
"}\n"
"test()\n";
m_debuggerAgent->addBreakPoint("conditionalBreakPoint", 3, /*enabled*/true, QStringLiteral("i > 10"));
evaluateJavaScript(script, "conditionalBreakPoint");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 4);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(state.fileName, QString("conditionalBreakPoint"));
QCOMPARE(state.lineNumber, 3);
QCOMPARE(m_debuggerAgent->m_capturedLocals[0].size(), 2);
QVERIFY(m_debuggerAgent->m_capturedLocals[0].contains(QStringLiteral("i")));
QCOMPARE(m_debuggerAgent->m_capturedLocals[0]["i"].toInt(), 11);
}
void tst_qv4debugger::conditionalBreakPointInQml()
{
QQmlEngine engine;
QV4::ExecutionEngine *v4 = QV8Engine::getV4(&engine);
v4->enableDebugger();
QScopedPointer<QThread> debugThread(new QThread);
debugThread->start();
QScopedPointer<TestAgent> debuggerAgent(new TestAgent);
debuggerAgent->addDebugger(v4->debugger);
debuggerAgent->moveToThread(debugThread.data());
QQmlComponent component(&engine);
component.setData("import QtQml 2.0\n"
"QtObject {\n"
" id: root\n"
" property int foo: 42\n"
" property bool success: false\n"
" Component.onCompleted: {\n"
" success = true;\n" // breakpoint here
" }\n"
"}\n", QUrl("test.qml"));
debuggerAgent->addBreakPoint("test.qml", 7, /*enabled*/true, "root.foo == 42");
QScopedPointer<QObject> obj(component.create());
QCOMPARE(obj->property("success").toBool(), true);
QCOMPARE(debuggerAgent->m_statesWhenPaused.count(), 1);
QCOMPARE(debuggerAgent->m_statesWhenPaused.at(0).fileName, QStringLiteral("test.qml"));
QCOMPARE(debuggerAgent->m_statesWhenPaused.at(0).lineNumber, 7);
debugThread->quit();
debugThread->wait();
}
void tst_qv4debugger::readArguments()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"function f(a, b, c, d) {\n"
" return a === b\n"
"}\n"
"var four;\n"
"f(1, 'two', null, four);\n";
m_debuggerAgent->addBreakPoint("readArguments", 2);
evaluateJavaScript(script, "readArguments");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_capturedArguments[0].size(), 4);
QVERIFY(m_debuggerAgent->m_capturedArguments[0].contains(QStringLiteral("a")));
QCOMPARE(m_debuggerAgent->m_capturedArguments[0]["a"].type(), QVariant::Double);
QCOMPARE(m_debuggerAgent->m_capturedArguments[0]["a"].toDouble(), 1.0);
QVERIFY(m_debuggerAgent->m_capturedArguments[0].contains("b"));
QCOMPARE(m_debuggerAgent->m_capturedArguments[0]["b"].type(), QVariant::String);
QCOMPARE(m_debuggerAgent->m_capturedArguments[0]["b"].toString(), QLatin1String("two"));
}
void tst_qv4debugger::readLocals()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"function f(a, b) {\n"
" var c = a + b\n"
" var d = a - b\n" // breakpoint, c should be set, d should be undefined
" return c === d\n"
"}\n"
"f(1, 2, 3);\n";
m_debuggerAgent->addBreakPoint("readLocals", 3);
evaluateJavaScript(script, "readLocals");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_capturedLocals[0].size(), 2);
QVERIFY(m_debuggerAgent->m_capturedLocals[0].contains("c"));
QCOMPARE(m_debuggerAgent->m_capturedLocals[0]["c"].type(), QVariant::Double);
QCOMPARE(m_debuggerAgent->m_capturedLocals[0]["c"].toDouble(), 3.0);
QVERIFY(m_debuggerAgent->m_capturedLocals[0].contains("d"));
QCOMPARE(m_debuggerAgent->m_capturedLocals[0]["d"].toString(), QString("undefined"));
}
void tst_qv4debugger::readObject()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"function f(a) {\n"
" var b = a\n"
" return b\n"
"}\n"
"f({head: 1, tail: { head: 'asdf', tail: null }});\n";
m_debuggerAgent->addBreakPoint("readObject", 3);
evaluateJavaScript(script, "readObject");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_capturedLocals[0].size(), 1);
QVERIFY(m_debuggerAgent->m_capturedLocals[0].contains("b"));
QCOMPARE(m_debuggerAgent->m_capturedLocals[0]["b"].type(), QVariant::Map);
QVariantMap b = m_debuggerAgent->m_capturedLocals[0]["b"].toMap();
QCOMPARE(b.size(), 2);
QVERIFY(b.contains("head"));
QCOMPARE(b["head"].type(), QVariant::Double);
QCOMPARE(b["head"].toDouble(), 1.0);
QVERIFY(b.contains("tail"));
QCOMPARE(b["tail"].type(), QVariant::Map);
QVariantMap b_tail = b["tail"].toMap();
QCOMPARE(b_tail.size(), 2);
QVERIFY(b_tail.contains("head"));
QCOMPARE(b_tail["head"].type(), QVariant::String);
QCOMPARE(b_tail["head"].toString(), QString("asdf"));
}
void tst_qv4debugger::readContextInAllFrames()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"function fact(n) {\n"
" if (n > 1) {\n"
" var n_1 = n - 1;\n"
" n_1 = fact(n_1);\n"
" return n * n_1;\n"
" } else\n"
" return 1;\n" // breakpoint
"}\n"
"fact(12);\n";
m_debuggerAgent->addBreakPoint("readFormalsInAllFrames", 7);
evaluateJavaScript(script, "readFormalsInAllFrames");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_stackTrace.size(), 13);
QCOMPARE(m_debuggerAgent->m_capturedArguments.size(), 13);
QCOMPARE(m_debuggerAgent->m_capturedLocals.size(), 13);
for (int i = 0; i < 12; ++i) {
QCOMPARE(m_debuggerAgent->m_capturedArguments[i].size(), 1);
QVERIFY(m_debuggerAgent->m_capturedArguments[i].contains("n"));
QCOMPARE(m_debuggerAgent->m_capturedArguments[i]["n"].type(), QVariant::Double);
QCOMPARE(m_debuggerAgent->m_capturedArguments[i]["n"].toDouble(), i + 1.0);
QCOMPARE(m_debuggerAgent->m_capturedLocals[i].size(), 1);
QVERIFY(m_debuggerAgent->m_capturedLocals[i].contains("n_1"));
if (i == 0) {
QCOMPARE(m_debuggerAgent->m_capturedLocals[i]["n_1"].toString(), QString("undefined"));
} else {
QCOMPARE(m_debuggerAgent->m_capturedLocals[i]["n_1"].type(), QVariant::Double);
QCOMPARE(m_debuggerAgent->m_capturedLocals[i]["n_1"].toInt(), i);
}
}
QCOMPARE(m_debuggerAgent->m_capturedArguments[12].size(), 0);
QCOMPARE(m_debuggerAgent->m_capturedLocals[12].size(), 0);
}
void tst_qv4debugger::pauseOnThrow()
{
QString script =
"function die(n) {\n"
" throw n\n"
"}\n"
"die('hard');\n";
m_debuggerAgent->setBreakOnThrow(true);
evaluateJavaScript(script, "pauseOnThrow");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, Throwing);
QCOMPARE(m_debuggerAgent->m_stackTrace.size(), 2);
QCOMPARE(m_debuggerAgent->m_thrownValue.type(), QVariant::String);
QCOMPARE(m_debuggerAgent->m_thrownValue.toString(), QString("hard"));
}
void tst_qv4debugger::breakInCatch()
{
QString script =
"try {\n"
" throw 'catch...'\n"
"} catch (e) {\n"
" console.log(e, 'me');\n"
"}\n";
m_debuggerAgent->addBreakPoint("breakInCatch", 4);
evaluateJavaScript(script, "breakInCatch");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, BreakPoint);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(state.fileName, QString("breakInCatch"));
QCOMPARE(state.lineNumber, 4);
}
void tst_qv4debugger::breakInWith()
{
QString script =
"with (42) {\n"
" console.log('give the answer');\n"
"}\n";
m_debuggerAgent->addBreakPoint("breakInWith", 2);
evaluateJavaScript(script, "breakInWith");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, BreakPoint);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4::Debugging::Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(state.fileName, QString("breakInWith"));
QCOMPARE(state.lineNumber, 2);
}
void tst_qv4debugger::evaluateExpression()
{
QString script =
"function testFunction() {\n"
" var x = 10\n"
" return x\n" // breakpoint
"}\n"
"var x = 20\n"
"testFunction()\n";
TestAgent::ExpressionRequest request;
request.expression = "x";
request.frameNr = 0;
m_debuggerAgent->m_expressionRequests << request;
request.expression = "x";
request.frameNr = 1;
m_debuggerAgent->m_expressionRequests << request;
m_debuggerAgent->addBreakPoint("evaluateExpression", 3);
evaluateJavaScript(script, "evaluateExpression");
QCOMPARE(m_debuggerAgent->m_expressionResults.count(), 2);
QCOMPARE(m_debuggerAgent->m_expressionResults[0].toInt(), 10);
QCOMPARE(m_debuggerAgent->m_expressionResults[1].toInt(), 20);
}
QTEST_MAIN(tst_qv4debugger)
#include "tst_qv4debugger.moc"