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

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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtQuickTestUtils/private/qmlutils_p.h>
#include <QtTest/QtTest>
#include "qv4datacollector.h"
#include "qv4debugger.h"
#include "qv4debugjob.h"
#include <QJSEngine>
#include <QQmlEngine>
#include <QQmlComponent>
#include <private/qv4engine_p.h>
#include <private/qv4debugging_p.h>
#include <private/qv4objectiterator_p.h>
#include <private/qv4string_p.h>
#include <private/qqmlbuiltinfunctions_p.h>
#include <private/qqmldebugservice_p.h>
using namespace QV4;
using namespace QV4::Debugging;
typedef QV4::ReturnedValue (*InjectedFunction)(const FunctionObject *b, const QV4::Value *, const QV4::Value *, int);
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)
{
QStringList stack;
QJSValue result = QJSEngine::evaluate(script, fileName, lineNumber, &stack);
if (!stack.isEmpty()) {
qDebug() << result.toString();
qDebug() << stack;
}
emit evaluateFinished();
}
QV4::ExecutionEngine *v4Engine() { return handle(); }
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::ScopedValue function(scope, FunctionObject::createBuiltinFunction(v4, name, injectedFunction, 0));
v4->globalObject->put(name, function);
}
signals:
void evaluateFinished();
};
class ExceptionCollectJob: public CollectJob
{
QV4DataCollector::Ref exception;
public:
ExceptionCollectJob(QV4DataCollector *collector) :
CollectJob(collector), exception(-1) {}
void run() override {
QV4::Scope scope(collector->engine());
QV4::ScopedValue v(scope, *collector->engine()->exceptionValue);
exception = collector->addValueRef(v);
}
QV4DataCollector::Ref exceptionValue() const { return exception; }
};
class TestAgent : public QObject
{
Q_OBJECT
public:
typedef QV4DataCollector::Refs Refs;
typedef QV4DataCollector::Ref Ref;
struct NamedRefs {
QJsonObject scope;
int size() const {
return scope.size();
}
bool contains(const QString &name) const {
return scope.contains(name);
}
#define DUMP_JSON(x) {\
QJsonDocument doc(x);\
qDebug() << #x << "=" << doc.toJson(QJsonDocument::Indented);\
}
QJsonObject rawValue(const QString &name) const {
Q_ASSERT(contains(name));
return scope[name].toObject();
}
QJsonValue value(const QString &name) const {
return rawValue(name).value(QStringLiteral("value"));
}
QString type(const QString &name) const {
return rawValue(name).value(QStringLiteral("type")).toString();
}
void dump(const QString &name) const {
if (!contains(name)) {
qDebug() << "no" << name;
return;
}
QJsonObject o = scope[name].toObject();
QJsonDocument d;
d.setObject(o);
qDebug() << name << "=" << d.toJson(QJsonDocument::Indented);
}
};
TestAgent(QV4::ExecutionEngine *engine)
: m_wasPaused(false)
, m_captureContextInfo(false)
, m_thrownValue(-1)
, collector(engine)
, m_resumeSpeed(QV4Debugger::FullThrottle)
, m_debugger(nullptr)
{
}
public slots:
void debuggerPaused(QV4Debugger *debugger, QV4Debugger::PauseReason reason)
{
Q_ASSERT(debugger == m_debugger);
Q_ASSERT(debugger->engine() == collector.engine());
m_wasPaused = true;
m_pauseReason = reason;
m_statesWhenPaused << debugger->currentExecutionState();
if (debugger->state() == QV4Debugger::Paused && debugger->engine()->hasException) {
ExceptionCollectJob job(&collector);
debugger->runInEngine(&job);
m_thrownValue = job.exceptionValue();
}
foreach (const TestBreakPoint &bp, m_breakPointsToAddWhenPaused)
debugger->addBreakPoint(bp.fileName, bp.lineNumber);
m_breakPointsToAddWhenPaused.clear();
m_stackTrace = debugger->stackTrace();
while (!m_expressionRequests.isEmpty()) {
Q_ASSERT(debugger->state() == QV4Debugger::Paused);
ExpressionRequest request = m_expressionRequests.takeFirst();
ExpressionEvalJob job(debugger->engine(), request.frameNr, request.context,
request.expression, &collector);
debugger->runInEngine(&job);
m_expressionResults << job.returnValue();
}
if (m_captureContextInfo)
captureContextInfo(debugger);
debugger->resume(m_resumeSpeed);
}
public:
struct TestBreakPoint
{
TestBreakPoint() : lineNumber(-1) {}
TestBreakPoint(const QString &fileName, int lineNumber)
: fileName(fileName), lineNumber(lineNumber) {}
QString fileName;
int lineNumber;
};
void captureContextInfo(QV4Debugger *debugger)
{
for (int i = 0, ei = m_stackTrace.size(); i != ei; ++i) {
m_capturedScope.append(NamedRefs());
FrameJob frameJob(&collector, i);
debugger->runInEngine(&frameJob);
QJsonObject frameObj = frameJob.returnValue();
QJsonArray scopes = frameObj.value(QLatin1String("scopes")).toArray();
int nscopes = scopes.size();
int s = 0;
for (s = 0; s < nscopes; ++s) {
QJsonObject o = scopes.at(s).toObject();
if (o.value(QLatin1String("type")).toInt(-2) == 1) // CallContext
break;
}
if (s == nscopes)
return;
ScopeJob job(&collector, i, s);
debugger->runInEngine(&job);
NamedRefs &refs = m_capturedScope.last();
QJsonObject object = job.returnValue();
object = object.value(QLatin1String("object")).toObject();
QVERIFY(!object.contains("ref") || object.contains("properties"));
for (const QJsonValue value : object.value(QLatin1String("properties")).toArray()) {
QJsonObject property = value.toObject();
QString name = property.value(QLatin1String("name")).toString();
property.remove(QLatin1String("name"));
refs.scope.insert(name, property);
}
}
}
void addDebugger(QV4Debugger *debugger)
{
Q_ASSERT(!m_debugger);
m_debugger = debugger;
connect(m_debugger, &QV4Debugger::debuggerPaused, this, &TestAgent::debuggerPaused);
}
bool m_wasPaused;
QV4Debugger::PauseReason m_pauseReason;
bool m_captureContextInfo;
QList<QV4Debugger::ExecutionState> m_statesWhenPaused;
QList<TestBreakPoint> m_breakPointsToAddWhenPaused;
QVector<QV4::StackFrame> m_stackTrace;
QVector<NamedRefs> m_capturedScope;
qint64 m_thrownValue;
QV4DataCollector collector;
struct ExpressionRequest {
QString expression;
int frameNr;
int context;
};
QVector<ExpressionRequest> m_expressionRequests;
QV4Debugger::Speed m_resumeSpeed;
QList<QJsonObject> m_expressionResults;
QV4Debugger *m_debugger;
// 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 QQmlDataTest
{
Q_OBJECT
public:
tst_qv4debugger();
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 readComplicatedArguments();
void readLocals();
void readObject();
void readContextInAllFrames();
// exceptions:
void pauseOnThrow();
void breakInCatch();
void breakInWith();
void evaluateExpression();
void stepToEndOfScript();
void lastLineOfConditional_data();
void lastLineOfConditional();
void readThis();
void signalParameters();
private:
QV4Debugger *debugger() const
{
return static_cast<QV4Debugger *>(m_v4->debugger());
}
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->setDebugger(new QV4Debugger(m_v4));
m_engine->moveToThread(m_javaScriptThread);
m_javaScriptThread->start();
m_debuggerAgent = new TestAgent(m_v4);
m_debuggerAgent->addDebugger(debugger());
}
void tst_qv4debugger::cleanup()
{
m_javaScriptThread->exit();
m_javaScriptThread->wait();
delete m_engine;
delete m_javaScriptThread;
m_engine = nullptr;
m_v4 = nullptr;
delete m_debuggerAgent;
m_debuggerAgent = nullptr;
}
void tst_qv4debugger::breakAnywhere()
{
QString script =
"var i = 42;\n"
"var j = i + 1\n"
"var k = i\n";
debugger()->pause();
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";
debugger()->addBreakPoint("testfile", 2);
evaluateJavaScript(script, "testfile");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4Debugger::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);
debugger()->pause();
evaluateJavaScript(script, "liveBreakPoint");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 2);
QV4Debugger::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";
debugger()->addBreakPoint("removePendingBreakPoint", 2);
debugger()->removeBreakPoint("removePendingBreakPoint", 2);
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";
debugger()->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);
QV4Debugger::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(const FunctionObject *function, const QV4::Value *, const QV4::Value *, int)
{
static_cast<QV4Debugger *>(function->engine()->debugger())
->removeBreakPoint("removeBreakPointForNextInstruction", 2);
RETURN_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));
debugger()->addBreakPoint("removeBreakPointForNextInstruction", 2);
evaluateJavaScript(script, "removeBreakPointForNextInstruction");
QVERIFY(!m_debuggerAgent->m_wasPaused);
}
void tst_qv4debugger::conditionalBreakPoint()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var test = function() {\n"
" for (var i = 0; i < 15; ++i) {\n"
" var x = i;\n"
" }\n"
"}\n"
"test()\n";
debugger()->addBreakPoint("conditionalBreakPoint", 3, QStringLiteral("i > 10"));
evaluateJavaScript(script, "conditionalBreakPoint");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 4);
QV4Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(state.fileName, QString("conditionalBreakPoint"));
QCOMPARE(state.lineNumber, 3);
QVERIFY(m_debuggerAgent->m_capturedScope.size() > 1);
const TestAgent::NamedRefs &frame0 = m_debuggerAgent->m_capturedScope.at(0);
QCOMPARE(frame0.size(), 2);
QVERIFY(frame0.contains("i"));
QCOMPARE(frame0.value("i").toInt(), 11);
}
void tst_qv4debugger::conditionalBreakPointInQml()
{
QQmlEngine engine;
QV4::ExecutionEngine *v4 = engine.handle();
QV4Debugger *v4Debugger = new QV4Debugger(v4);
v4->setDebugger(v4Debugger);
QScopedPointer<QThread> debugThread(new QThread);
debugThread->start();
QScopedPointer<TestAgent> debuggerAgent(new TestAgent(v4));
debuggerAgent->addDebugger(v4Debugger);
debuggerAgent->moveToThread(debugThread.data());
const QString qmlFileName("conditionalBreakPointInQml.qml");
const QString qmlFilePath(testFile(qmlFileName));
QQmlComponent component(&engine, qmlFilePath);
v4Debugger->addBreakPoint(qmlFileName, 7, "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, qmlFileName);
QCOMPARE(debuggerAgent->m_statesWhenPaused.at(0).lineNumber, 7);
debugThread->quit();
debugThread->wait();
}
void tst_qv4debugger::readArguments()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var f = function(a, b, c, d) {\n"
" return a === b\n"
"}\n"
"var four;\n"
"f(1, 'two', null, four);\n";
debugger()->addBreakPoint("readArguments", 2);
evaluateJavaScript(script, "readArguments");
QVERIFY(m_debuggerAgent->m_wasPaused);
QVERIFY(m_debuggerAgent->m_capturedScope.size() > 1);
const TestAgent::NamedRefs &frame0 = m_debuggerAgent->m_capturedScope.at(0);
QCOMPARE(frame0.size(), 4);
QVERIFY(frame0.contains(QStringLiteral("a")));
QCOMPARE(frame0.type(QStringLiteral("a")), QStringLiteral("number"));
QCOMPARE(frame0.value(QStringLiteral("a")).toDouble(), 1.0);
QVERIFY(frame0.scope.contains("b"));
QCOMPARE(frame0.type(QStringLiteral("b")), QStringLiteral("string"));
QCOMPARE(frame0.value(QStringLiteral("b")).toString(), QStringLiteral("two"));
}
void tst_qv4debugger::readComplicatedArguments()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var f = function(a) {\n"
" a = 12;\n"
" return a;\n"
"}\n"
"f(1, 2);\n";
debugger()->addBreakPoint("readArguments", 3);
evaluateJavaScript(script, "readArguments");
QVERIFY(m_debuggerAgent->m_wasPaused);
QVERIFY(m_debuggerAgent->m_capturedScope.size() > 1);
const TestAgent::NamedRefs &frame0 = m_debuggerAgent->m_capturedScope.at(0);
QCOMPARE(frame0.size(), 1);
QVERIFY(frame0.contains(QStringLiteral("a")));
QCOMPARE(frame0.type(QStringLiteral("a")), QStringLiteral("number"));
QCOMPARE(frame0.value(QStringLiteral("a")).toInt(), 12);
}
void tst_qv4debugger::readLocals()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var f = function(a, b) {\n"
" var c = a + b\n"
" let e = 'jaja'\n"
" const ff = 'nenene'\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";
debugger()->addBreakPoint("readLocals", 5);
evaluateJavaScript(script, "readLocals");
QVERIFY(m_debuggerAgent->m_wasPaused);
QVERIFY(m_debuggerAgent->m_capturedScope.size() > 1);
const TestAgent::NamedRefs &frame0 = m_debuggerAgent->m_capturedScope.at(0);
QCOMPARE(frame0.size(), 6); // locals and parameters
QVERIFY(frame0.contains("c"));
QCOMPARE(frame0.type("c"), QStringLiteral("number"));
QCOMPARE(frame0.value("c").toDouble(), 3.0);
QVERIFY(frame0.contains("d"));
QCOMPARE(frame0.type("d"), QStringLiteral("undefined"));
QVERIFY(frame0.contains("e"));
QCOMPARE(frame0.type("e"), QStringLiteral("string"));
QCOMPARE(frame0.value("e").toString(), QStringLiteral("jaja"));
QVERIFY(frame0.contains("ff"));
QCOMPARE(frame0.type("ff"), QStringLiteral("string"));
QCOMPARE(frame0.value("ff").toString(), QStringLiteral("nenene"));
}
void tst_qv4debugger::readObject()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var f = function(a) {\n"
" var b = a\n"
" return b\n"
"}\n"
"f({head: 1, tail: { head: 'asdf', tail: null }});\n";
debugger()->addBreakPoint("readObject", 3);
evaluateJavaScript(script, "readObject");
QVERIFY(m_debuggerAgent->m_wasPaused);
QVERIFY(m_debuggerAgent->m_capturedScope.size() > 1);
const TestAgent::NamedRefs &frame0 = m_debuggerAgent->m_capturedScope.at(0);
QCOMPARE(frame0.size(), 2);
QVERIFY(frame0.contains("b"));
QCOMPARE(frame0.type("b"), QStringLiteral("object"));
QJsonObject b = frame0.rawValue("b");
QVERIFY(b.contains(QStringLiteral("ref")));
QVERIFY(b.contains(QStringLiteral("value")));
QVERIFY(!b.contains(QStringLiteral("properties")));
QVERIFY(b.value("value").isDouble());
QCOMPARE(b.value("value").toInt(), 2);
b = m_debuggerAgent->collector.lookupRef(b.value("ref").toInt());
QVERIFY(b.contains(QStringLiteral("properties")));
QVERIFY(b.value("properties").isArray());
QJsonArray b_props = b.value("properties").toArray();
QCOMPARE(b_props.size(), 2);
QVERIFY(b_props.at(0).isObject());
QJsonObject b_head = b_props.at(0).toObject();
QCOMPARE(b_head.value("name").toString(), QStringLiteral("head"));
QCOMPARE(b_head.value("type").toString(), QStringLiteral("number"));
QCOMPARE(b_head.value("value").toDouble(), 1.0);
QVERIFY(b_props.at(1).isObject());
QJsonObject b_tail = b_props.at(1).toObject();
QCOMPARE(b_tail.value("name").toString(), QStringLiteral("tail"));
QVERIFY(b_tail.contains("ref"));
QJsonObject b_tail_value = m_debuggerAgent->collector.lookupRef(b_tail.value("ref").toInt());
QCOMPARE(b_tail_value.value("type").toString(), QStringLiteral("object"));
QVERIFY(b_tail_value.contains("properties"));
QJsonArray b_tail_props = b_tail_value.value("properties").toArray();
QCOMPARE(b_tail_props.size(), 2);
QJsonObject b_tail_head = b_tail_props.at(0).toObject();
QCOMPARE(b_tail_head.value("name").toString(), QStringLiteral("head"));
QCOMPARE(b_tail_head.value("type").toString(), QStringLiteral("string"));
QCOMPARE(b_tail_head.value("value").toString(), QStringLiteral("asdf"));
QJsonObject b_tail_tail = b_tail_props.at(1).toObject();
QCOMPARE(b_tail_tail.value("name").toString(), QStringLiteral("tail"));
QCOMPARE(b_tail_tail.value("type").toString(), QStringLiteral("object"));
QVERIFY(b_tail_tail.value("value").isNull());
}
void tst_qv4debugger::readContextInAllFrames()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var fact = function(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";
debugger()->addBreakPoint("readFormalsInAllFrames", 7);
evaluateJavaScript(script, "readFormalsInAllFrames");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_stackTrace.size(), 13);
QCOMPARE(m_debuggerAgent->m_capturedScope.size(), 13);
for (int i = 0; i < 12; ++i) {
const TestAgent::NamedRefs &scope = m_debuggerAgent->m_capturedScope.at(i);
QCOMPARE(scope.size(), 2);
QVERIFY(scope.contains("n"));
QCOMPARE(scope.type("n"), QStringLiteral("number"));
QCOMPARE(scope.value("n").toDouble(), i + 1.0);
QVERIFY(scope.contains("n_1"));
if (i == 0) {
QCOMPARE(scope.type("n_1"), QStringLiteral("undefined"));
} else {
QCOMPARE(scope.type("n_1"), QStringLiteral("number"));
QCOMPARE(scope.value("n_1").toInt(), i);
}
}
QCOMPARE(m_debuggerAgent->m_capturedScope[12].size(), 0);
}
void tst_qv4debugger::pauseOnThrow()
{
QString script =
"function die(n) {\n"
" throw n\n"
"}\n"
"die('hard');\n";
debugger()->setBreakOnThrow(true);
evaluateJavaScript(script, "pauseOnThrow");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, QV4Debugger::Throwing);
QCOMPARE(m_debuggerAgent->m_stackTrace.size(), 2);
QVERIFY(m_debuggerAgent->m_thrownValue >= qint64(0));
QJsonObject exception = m_debuggerAgent->collector.lookupRef(m_debuggerAgent->m_thrownValue);
// DUMP_JSON(exception);
QCOMPARE(exception.value("type").toString(), QStringLiteral("string"));
QCOMPARE(exception.value("value").toString(), QStringLiteral("hard"));
}
void tst_qv4debugger::breakInCatch()
{
QString script =
"try {\n"
" throw 'catch...'\n"
"} catch (e) {\n"
" console.log(e, 'me');\n"
"}\n";
debugger()->addBreakPoint("breakInCatch", 4);
evaluateJavaScript(script, "breakInCatch");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, QV4Debugger::BreakPointHit);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4Debugger::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";
debugger()->addBreakPoint("breakInWith", 2);
evaluateJavaScript(script, "breakInWith");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, QV4Debugger::BreakPointHit);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 1);
QV4Debugger::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;
request.context = -1; // no extra context
m_debuggerAgent->m_expressionRequests << request;
request.expression = "x";
request.frameNr = 1;
m_debuggerAgent->m_expressionRequests << request;
request.context = 5355; // invalid context object
m_debuggerAgent->m_expressionRequests << request;
QObject object; // some object without QML context
request.context = QQmlDebugService::idForObject(&object);
m_debuggerAgent->m_expressionRequests << request;
debugger()->addBreakPoint("evaluateExpression", 3);
evaluateJavaScript(script, "evaluateExpression");
QCOMPARE(m_debuggerAgent->m_expressionResults.count(), 4);
QJsonObject result0 = m_debuggerAgent->m_expressionResults[0];
QCOMPARE(result0.value("type").toString(), QStringLiteral("number"));
QCOMPARE(result0.value("value").toInt(), 10);
for (int i = 1; i < 4; ++i) {
QJsonObject result1 = m_debuggerAgent->m_expressionResults[i];
QCOMPARE(result1.value("type").toString(), QStringLiteral("number"));
QCOMPARE(result1.value("value").toInt(), 20);
}
}
void tst_qv4debugger::stepToEndOfScript()
{
QString script =
"var ret = 0;\n"
"ret += 4;\n"
"ret += 1;\n"
"ret += 5;\n";
debugger()->addBreakPoint("toEnd", 1);
m_debuggerAgent->m_resumeSpeed = QV4Debugger::StepOver;
evaluateJavaScript(script, "toEnd");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, QV4Debugger::Step);
QCOMPARE(m_debuggerAgent->m_statesWhenPaused.count(), 5);
for (int i = 0; i < 4; ++i) {
QV4Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.at(i);
QCOMPARE(state.fileName, QString("toEnd"));
QCOMPARE(state.lineNumber, i + 1);
}
QV4Debugger::ExecutionState state = m_debuggerAgent->m_statesWhenPaused.at(4);
QCOMPARE(state.fileName, QString("toEnd"));
QCOMPARE(state.lineNumber, -4); // A return instruction without proper line number.
}
void tst_qv4debugger::lastLineOfConditional_data()
{
QTest::addColumn<QString>("head");
QTest::addColumn<QString>("tail");
QTest::addColumn<int>("breakPoint");
QTest::addColumn<int>("lastLine");
QTest::newRow("for {block}") << "for (var i = 0; i < 10; ++i) {\n" << "}" << 4 << 7;
QTest::newRow("for..in {block}") << "for (var i in [0, 1, 2, 3, 4]) {\n" << "}" << 4 << 7;
QTest::newRow("while {block}") << "while (ret < 10) {\n" << "}" << 4 << 7;
QTest::newRow("do..while {block}") << "do {\n" << "} while (ret < 10);" << 4 << 7;
QTest::newRow("if true {block}") << "if (true) {\n" << "}"
<< 4 << 8;
QTest::newRow("if false {block}") << "if (false) {\n" << "}"
<< 2 << 8;
QTest::newRow("if true else {block}") << "if (true) {\n" << "} else {\n ret += 8;\n}"
<< 4 << 10;
QTest::newRow("if false else {block}") << "if (false) {\n" << "} else {\n ret += 8;\n}"
<< 8 << 10;
QTest::newRow("for statement") << "for (var i = 0; i < 10; ++i)\n" << "" << 4 << 2;
QTest::newRow("for..in statement") << "for (var i in [0, 1, 2, 3, 4])\n" << "" << 4 << 2;
QTest::newRow("while statement") << "while (ret < 10)\n" << "" << 4 << 2;
QTest::newRow("do..while statement") << "do\n" << "while (ret < 10);" << 4 << 7;
// For two nested if statements without blocks, we need to map the jump from the inner to the
// outer one on the outer "if". There is just no better place.
QTest::newRow("if true statement") << "if (true)\n" << "" << 4 << 8;
QTest::newRow("if false statement") << "if (false)\n" << "" << 2 << 8;
// Also two nested ifs without blocks.
QTest::newRow("if true else statement") << "if (true)\n" << "else\n ret += 8;" << 4 << 9;
QTest::newRow("if false else statement") << "if (false)\n" << "else\n ret += 8;" << 8 << 9;
}
void tst_qv4debugger::lastLineOfConditional()
{
QFETCH(QString, head);
QFETCH(QString, tail);
QFETCH(int, breakPoint);
QFETCH(int, lastLine);
QString script =
"var ret = 2;\n"
+ head +
" if (ret == 2)\n"
" ret += 4;\n" // breakpoint, then step over
" else\n"
" ret += 1;\n"
+ tail + "\n" +
"ret -= 5;";
debugger()->addBreakPoint("trueBranch", breakPoint);
m_debuggerAgent->m_resumeSpeed = QV4Debugger::StepOver;
evaluateJavaScript(script, "trueBranch");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_pauseReason, QV4Debugger::Step);
QVERIFY(m_debuggerAgent->m_statesWhenPaused.count() > 1);
QV4Debugger::ExecutionState firstState = m_debuggerAgent->m_statesWhenPaused.first();
QCOMPARE(firstState.fileName, QString("trueBranch"));
QCOMPARE(firstState.lineNumber, breakPoint);
QV4Debugger::ExecutionState secondState = m_debuggerAgent->m_statesWhenPaused.at(1);
QCOMPARE(secondState.fileName, QString("trueBranch"));
QCOMPARE(secondState.lineNumber, lastLine);
}
void tst_qv4debugger::readThis()
{
m_debuggerAgent->m_captureContextInfo = true;
QString script =
"var x = function() {\n"
" return this.a;\n"
"}.apply({a : 5}, []);\n";
TestAgent::ExpressionRequest request;
request.expression = "this";
request.frameNr = 0;
request.context = -1; // no extra context
m_debuggerAgent->m_expressionRequests << request;
debugger()->addBreakPoint("applyThis", 2);
evaluateJavaScript(script, "applyThis");
QVERIFY(m_debuggerAgent->m_wasPaused);
QCOMPARE(m_debuggerAgent->m_expressionResults.count(), 1);
QJsonObject result0 = m_debuggerAgent->m_expressionResults[0];
QCOMPARE(result0.value("type").toString(), QStringLiteral("object"));
QCOMPARE(result0.value("value").toInt(), 1);
QJsonArray properties = result0.value("properties").toArray();
QCOMPARE(properties.size(), 1);
QJsonObject a = properties.first().toObject();
QCOMPARE(a.value("name").toString(), QStringLiteral("a"));
QCOMPARE(a.value("type").toString(), QStringLiteral("number"));
QCOMPARE(a.value("value").toInt(), 5);
}
void tst_qv4debugger::signalParameters()
{
QQmlEngine engine;
QV4::ExecutionEngine *v4 = engine.handle();
v4->setDebugger(new QV4Debugger(v4));
QQmlComponent component(&engine);
component.setData("import QtQml 2.12\n"
"QtObject {\n"
" id: root\n"
" property string result: 'unset'\n"
" property string resultCallbackInternal: 'unset'\n"
" property string resultCallbackExternal: 'unset'\n"
" signal signalWithArg(string textArg)\n"
" function call(callback) { callback(); }\n"
" function externalCallback() { root.resultCallbackExternal = textArg; }\n"
" property Connections connections : Connections {\n"
" target: root\n"
" onSignalWithArg: { root.result = textArg; call(function() { root.resultCallbackInternal = textArg; }); call(externalCallback); }\n"
" }\n"
" Component.onCompleted: signalWithArg('something')\n"
"}", QUrl("test.qml"));
QVERIFY2(component.isReady(), qPrintable(component.errorString()));
QScopedPointer<QObject> obj(component.create());
QVERIFY(obj);
QCOMPARE(obj->property("result").toString(), QLatin1String("something"));
QCOMPARE(obj->property("resultCallbackInternal").toString(), QLatin1String("something"));
QCOMPARE(obj->property("resultCallbackExternal").toString(), QLatin1String("unset"));
}
tst_qv4debugger::tst_qv4debugger() : QQmlDataTest(QT_QMLTEST_DATADIR) { }
QTEST_MAIN(tst_qv4debugger)
#include "tst_qv4debugger.moc"
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