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Telegram/ThirdParty/kcoreaddons/autotests/kcompositejobtest.cpp

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+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2013 Kevin Funk <kevin@kfunk.org>
+
+    SPDX-License-Identifier: LGPL-2.0-only
+*/
+
+#include "kcompositejobtest.h"
+
+#include <QSignalSpy>
+#include <QTest>
+#include <QTimer>
+
+TestJob::TestJob(QObject *parent)
+    : KJob(parent)
+{
+}
+
+void TestJob::start()
+{
+    QTimer::singleShot(1000, this, &TestJob::doEmit);
+}
+
+void TestJob::doEmit()
+{
+    emitResult();
+}
+
+void CompositeJob::start()
+{
+    if (hasSubjobs()) {
+        subjobs().first()->start();
+    } else {
+        emitResult();
+    }
+}
+
+bool CompositeJob::addSubjob(KJob *job)
+{
+    return KCompositeJob::addSubjob(job);
+}
+
+void CompositeJob::slotResult(KJob *job)
+{
+    KCompositeJob::slotResult(job);
+
+    if (!error() && hasSubjobs()) {
+        // start next
+        subjobs().first()->start();
+    } else {
+        setError(job->error());
+        setErrorText(job->errorText());
+        emitResult();
+    }
+}
+
+KCompositeJobTest::KCompositeJobTest()
+    : loop(this)
+{
+}
+
+/**
+ * In case a composite job is deleted during execution
+ * we still want to assure that we don't crash
+ *
+ * see bug: https://bugs.kde.org/show_bug.cgi?id=230692
+ */
+void KCompositeJobTest::testDeletionDuringExecution()
+{
+    QObject *someParent = new QObject;
+    KJob *job = new TestJob(someParent);
+
+    CompositeJob *compositeJob = new CompositeJob;
+    compositeJob->setAutoDelete(false);
+    QVERIFY(compositeJob->addSubjob(job));
+
+    QCOMPARE(job->parent(), compositeJob);
+
+    QSignalSpy destroyed_spy(job, &QObject::destroyed);
+    // check if job got reparented properly
+    delete someParent;
+    someParent = nullptr;
+    // the job should still exist, because it is a child of KCompositeJob now
+    QCOMPARE(destroyed_spy.size(), 0);
+
+    // start async, the subjob takes 1 second to finish
+    compositeJob->start();
+
+    // delete the job during the execution
+    delete compositeJob;
+    compositeJob = nullptr;
+    // at this point, the subjob should be deleted, too
+    QCOMPARE(destroyed_spy.size(), 1);
+}
+
+QTEST_GUILESS_MAIN(KCompositeJobTest)
+
+#include "moc_kcompositejobtest.cpp"