extra autotests for exceptions

1 files changed, 205 insertions, 0 deletions

diff --git a/tests/auto/symbian/qmainexceptions/tst_qmainexceptions.cpp b/tests/auto/symbian/qmainexceptions/tst_qmainexceptions.cpp
index 103dd62731..db804966c7 100644
--- a/tests/auto/symbian/qmainexceptions/tst_qmainexceptions.cpp
+++ b/tests/auto/symbian/qmainexceptions/tst_qmainexceptions.cpp
@@ -40,21 +40,38 @@
 ****************************************************************************/
 
 #include <QtTest/QtTest>
+#include <e32base.h>
 
 #ifdef Q_OS_SYMBIAN
 
+typedef void TLeavingFunc();
+
 class tst_qmainexceptions : public QObject
 {
     Q_OBJECT
 public:
     tst_qmainexceptions(){};
     ~tst_qmainexceptions(){};
+    
+    void TestSchedulerCatchesError(TLeavingFunc* f, int error);
+    void TestSymbianRoundTrip(int leave, int trap);
+   
+    bool event(QEvent *event);
+    
 public slots:
     void initTestCase();
 private slots:
     void trap();
     void cleanupstack();
     void leave();
+    void testTranslateBadAlloc();
+    void testTranslateBigAlloc();
+    void testRoundTrip();
+    void testTrap();
+    void testPropagation();
+    void testDtor1();
+    void testDtor2();
+    void testNestedExceptions();
 };
 
 class CDummy : public CBase
@@ -100,6 +117,194 @@ void tst_qmainexceptions::leave()
     __UHEAP_MARKEND;
 }
 
+class CTestActive : public CActive
+    {
+public:
+    CTestActive(TLeavingFunc* aFunc) : CActive(EPriorityStandard), iFunc(aFunc) 
+        {
+        CActiveScheduler::Add(this);
+        }
+    ~CTestActive()
+        {
+        Cancel();
+        }
+    void DoCancel()
+        {}
+    void Test()
+        {
+        // complete this AO in a nested scheduler, to make it synchronous
+        TRequestStatus* s = &iStatus;
+        SetActive();
+        User::RequestComplete(s, KErrNone);
+        CActiveScheduler::Start();
+        }
+    void RunL()
+        {
+        (*iFunc)();
+        CActiveScheduler::Stop();   // will only get here if iFunc does not leave
+        }
+    TInt RunError(TInt aError)
+        {
+        error = aError;
+        CActiveScheduler::Stop();   // will only get here if iFunc leaves
+        return KErrNone;
+        }
+public:
+    TLeavingFunc* iFunc;
+    int error;
+    };
+
+void tst_qmainexceptions::TestSchedulerCatchesError(TLeavingFunc* f, int error)
+    {
+    CTestActive *act = new(ELeave) CTestActive(f);
+    act->Test();
+    QCOMPARE(act->error, error);
+    delete act;
+    }
+
+void ThrowBadAlloc()
+{
+    throw std::bad_alloc();
+}
+
+void TranslateThrowBadAllocL()
+{
+    QT_TRANSLATE_EXCEPTION_TO_SYMBIAN_LEAVE(ThrowBadAlloc());
+}
+
+void tst_qmainexceptions::testTranslateBadAlloc()
+{
+    // bad_alloc should give KErrNoMemory in an AO
+    TestSchedulerCatchesError(&TranslateThrowBadAllocL, KErrNoMemory);
+}
+
+void BigAlloc()
+{
+    int *x = new int[100000000];
+    delete [] x;
+}
+
+void TranslateBigAllocL()
+{
+    QT_TRANSLATE_EXCEPTION_TO_SYMBIAN_LEAVE(BigAlloc());
+}
+
+void tst_qmainexceptions::testTranslateBigAlloc()
+{
+    // this test will fail if new does not throw on failure, otherwise should give KErrNoMemory in AO
+    TestSchedulerCatchesError(&TranslateBigAllocL, KErrNoMemory);
+}
+
+void tst_qmainexceptions::TestSymbianRoundTrip(int leave, int trap)
+{
+    // check that leave converted to exception, converted to error gives expected error code
+    int trapped;
+    QT_TRANSLATE_EXCEPTION_TO_SYMBIAN_ERROR(
+            trapped,
+            QT_TRANSLATE_SYMBIAN_LEAVE_TO_EXCEPTION(
+                    User::LeaveIfError(leave)));
+    QCOMPARE(trap, trapped);
+}
+
+void tst_qmainexceptions::testRoundTrip()
+{
+    for (int e=-50; e<0; e++)
+        TestSymbianRoundTrip(e, e);
+    TestSymbianRoundTrip(KErrNone, KErrNone);
+    // positive error codes are not errors
+    TestSymbianRoundTrip(1, KErrNone);
+    TestSymbianRoundTrip(1000000000, KErrNone);
+}
+
+void tst_qmainexceptions::testTrap()
+{
+    // testing qt_translateExceptionToSymbianErrorL
+    TRAPD(err, qt_translateExceptionToSymbianErrorL(std::bad_alloc()));
+    QCOMPARE(err, KErrNoMemory);
+}
+
+bool tst_qmainexceptions::event(QEvent *aEvent)
+    {
+    if (aEvent->type() == QEvent::User+1)
+        throw std::bad_alloc();
+    else if (aEvent->type() == QEvent::User+2)
+        {
+        QEvent event(QEvent::Type(QEvent::User+1));
+        QApplication::sendEvent(this, &event);
+        }
+    return QObject::event(aEvent);
+    }
+
+void tst_qmainexceptions::testPropagation()
+{
+    // test exception thrown from event is propagated back to sender
+    QEvent event(QEvent::Type(QEvent::User+1));
+    bool caught = false;
+    try { QApplication::sendEvent(this, &event); }
+    catch (const std::bad_alloc&) { caught = true; }
+    QCOMPARE(caught, true);
+
+    // testing nested events propagate back to top level sender
+    caught = false;
+    QEvent event2(QEvent::Type(QEvent::User+2));
+    try { QApplication::sendEvent(this, &event2); }
+    catch (const std::bad_alloc&) { caught = true; }
+    QCOMPARE(caught, true);
+}
+
+void tst_qmainexceptions::testDtor1()
+{
+    // destructors work on exception
+    int i = 0;
+    struct SAutoInc {
+        SAutoInc(int& aI) : i(aI) { ++i; }
+        ~SAutoInc() { --i; }
+        int &i;
+    } ai(i);
+    QCOMPARE(i, 1);
+    try {
+        SAutoInc ai2(i);
+        QCOMPARE(i, 2);
+        throw std::bad_alloc();
+        QFAIL("should not get here");
+    } catch (const std::bad_alloc&) {
+        QCOMPARE(i, 1);
+    }
+    QCOMPARE(i, 1);
+}
+
+void tst_qmainexceptions::testDtor2()
+{
+    // memory is cleaned up correctly on exception
+    // this crashes with winscw compiler build < 481
+    __UHEAP_MARK;
+    try {
+        QString str("abc");
+        str += "def";
+        throw std::bad_alloc();
+        QFAIL("should not get here");
+    } catch (const std::bad_alloc&) { }
+    __UHEAP_MARKEND;
+}
+
+void tst_qmainexceptions::testNestedExceptions()
+{
+    // throwing exceptions while handling exceptions
+    struct Oops { 
+        Oops* next;
+        Oops(int level) : next(level > 0 ? new Oops(level-1) : 0) {}
+        ~Oops() { 
+            try { throw std::bad_alloc(); } 
+            catch (const std::exception&) {delete next;} 
+        } 
+    };
+    try {
+        Oops oops(5);
+        throw std::bad_alloc();
+    }
+    catch (const std::exception&) {}
+}
+
 
 QTEST_MAIN(tst_qmainexceptions)
 #include "tst_qmainexceptions.moc"