qt 6.5.1 original

tests/auto/sql/kernel/qsqlthread/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## tst_qsqlthread Test:
+#####################################################################
+
+qt_internal_add_test(tst_qsqlthread
+    SOURCES
+        tst_qsqlthread.cpp
+    LIBRARIES
+        Qt::CorePrivate
+        Qt::Sql
+        Qt::SqlPrivate
+)

tests/auto/sql/kernel/qsqlthread/tst_qsqlthread.cpp

@@ -0,0 +1,487 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+
+#include <QTest>
+
+
+#include "../qsqldatabase/tst_databases.h"
+
+#include <QtCore>
+#include <QtSql>
+#include "qdebug.h"
+
+QString qtest;
+// set this define if Oracle is built with threading support
+//#define QOCI_THREADED
+
+class tst_QSqlThread : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_QSqlThread();
+    virtual ~tst_QSqlThread();
+
+
+    void dropTestTables();
+    void createTestTables();
+    void recreateTestTables();
+    void repopulateTestTables();
+
+    void generic_data(const QString &engine=QString());
+    tst_Databases dbs;
+
+public slots:
+    void initTestCase();
+    void cleanupTestCase();
+    void init();
+    void cleanup();
+
+protected slots:
+    void threadFinished() {
+        ++threadFinishedCount;
+        qDebug("Thread finished, total finished: %d", threadFinishedCount);
+    }
+
+private slots:
+    void simpleThreading_data() { generic_data(); }
+    void simpleThreading();
+    void readWriteThreading_data() { generic_data(); }
+    void readWriteThreading();
+    void readFromSingleConnection_data() { generic_data(); }
+    void readFromSingleConnection();
+    void readWriteFromSingleConnection_data() { generic_data(); }
+    void readWriteFromSingleConnection();
+    void preparedReadWriteFromSingleConnection_data() { generic_data(); }
+    void preparedReadWriteFromSingleConnection();
+    void transactionsFromSingleConnection_data() { generic_data(); }
+    void transactionsFromSingleConnection();
+
+private:
+    int threadFinishedCount;
+};
+
+static QAtomicInt counter;
+
+class QtTestSqlThread : public QThread
+{
+    Q_OBJECT
+public:
+    QtTestSqlThread(const QSqlDatabase &aDb, QObject *parent = nullptr)
+        : QThread(parent), sourceDb(aDb) {}
+
+    void runHelper(const QString &dbName)
+    {
+        QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
+        QVERIFY_SQL(db, open());
+
+        int sum = 0;
+        QSqlQuery q("select id from " + qtest, db);
+        QVERIFY_SQL(q, isActive());
+        while (q.next())
+            sum += q.value(0).toInt();
+        QCOMPARE(sum, 6);
+        q.clear();
+    }
+
+    void run() override
+    {
+        QString dbName = QString("QThreadDb%1").arg((size_t)currentThreadId());
+        runHelper(dbName);
+
+        QSqlDatabase::database(dbName).close();
+        QSqlDatabase::removeDatabase(dbName);
+    }
+
+private:
+    QSqlDatabase sourceDb;
+};
+
+enum { ProdConIterations = 10 };
+
+class SqlProducer: public QThread
+{
+    Q_OBJECT
+public:
+    SqlProducer(const QSqlDatabase &aDb, QObject *parent = nullptr)
+        : QThread(parent), sourceDb(aDb) {}
+
+    void runHelper(const QString &dbName)
+    {
+        QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
+        QVERIFY_SQL(db, open());
+        QSqlQuery q(db);
+        QVERIFY_SQL(q, prepare("insert into " + qtest + " values (?, ?, ?)"));
+        int id = 10;
+        for (int i = 0; i < ProdConIterations; ++i) {
+            q.bindValue(0, ++id);
+            q.bindValue(1, "threaddy");
+            q.bindValue(2, 10);
+            QVERIFY_SQL(q, exec());
+            QThread::yieldCurrentThread();
+        }
+    }
+
+    void run() override
+    {
+        QString dbName = QString("Producer%1").arg((size_t)currentThreadId());
+        runHelper(dbName);
+        QSqlDatabase::database(dbName).close();
+        QSqlDatabase::removeDatabase(dbName);
+    }
+private:
+    QSqlDatabase sourceDb;
+};
+
+class SqlConsumer: public QThread
+{
+    Q_OBJECT
+
+public:
+    SqlConsumer(const QSqlDatabase &aDb, QObject *parent = nullptr)
+        : QThread(parent), sourceDb(aDb) {}
+
+    void runHelper(const QString &dbName)
+    {
+        QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
+        QVERIFY_SQL(db, open());
+        QSqlQuery q1(db), q2(db);
+        QVERIFY_SQL(q2, prepare("delete from " + qtest + " where id = :id"));
+
+        for (int i = 0; i < ProdConIterations; ++i) {
+            QVERIFY_SQL(q1, exec("select max(id) from " + qtest));
+            q1.first();
+            q2.bindValue(":id", q1.value(0));
+            q1.clear();
+            QVERIFY_SQL(q2, exec());
+            QThread::yieldCurrentThread();
+        }
+    }
+
+    void run() override
+    {
+        QString dbName = QString("Consumer%1").arg((size_t)currentThreadId());
+        runHelper(dbName);
+        QSqlDatabase::database(dbName).close();
+        QSqlDatabase::removeDatabase(dbName);
+    }
+
+private:
+    QSqlDatabase sourceDb;
+};
+
+class SqlThread: public QThread
+{
+    Q_OBJECT
+
+public:
+    enum Mode { SimpleReading, PreparedReading, SimpleWriting, PreparedWriting };
+
+    SqlThread(Mode m, const QSqlDatabase &db, QObject *parent = nullptr)
+        : QThread(parent), sourceDb(db), mode(m) {}
+
+    void run() override
+    {
+        QSqlDatabase &db = sourceDb;
+        switch (mode) {
+        case SimpleReading: {
+            // Executes a Query for reading, iterates over the first 4 results
+            QSqlQuery q(sourceDb);
+            for (int j = 0; j < ProdConIterations; ++j) {
+                QVERIFY_SQL(q, exec("select id,name from " + qtest + " order by id"));
+                for (int i = 1; i < 4; ++i) {
+                    QVERIFY_SQL(q, next());
+                    QCOMPARE(q.value(0).toInt(), i);
+                }
+            }
+            break; }
+        case SimpleWriting: {
+            // Executes a query for writing (appends a new row)
+            QSqlQuery q(sourceDb);
+            for (int j = 0; j < ProdConIterations; ++j) {
+                QVERIFY_SQL(q, exec(QString("insert into " + qtest
+                                + " (id, name) values(%1, '%2')")
+                                      .arg(counter.fetchAndAddRelaxed(1)).arg("Robert")));
+            }
+            break; }
+        case PreparedReading: {
+            // Prepares a query for reading and iterates over the results
+            QSqlQuery q(sourceDb);
+            QVERIFY_SQL(q, prepare("select id, name from " + qtest + " where id = ?"));
+            for (int j = 0; j < ProdConIterations; ++j) {
+                q.addBindValue(j % 3 + 1);
+                QVERIFY_SQL(q, exec());
+                QVERIFY_SQL(q, next());
+                QCOMPARE(q.value(0).toInt(), j % 3 + 1);
+            }
+            break; }
+        case PreparedWriting: {
+            QSqlQuery q(sourceDb);
+            QVERIFY_SQL(q, prepare("insert into " + qtest + " (id, name) "
+                                     "values(?, ?)"));
+            for (int i = 0; i < ProdConIterations; ++i) {
+                q.addBindValue(counter.fetchAndAddRelaxed(1));
+                q.addBindValue("Robert");
+                QVERIFY_SQL(q, exec());
+            }
+            break; }
+        }
+    }
+
+private:
+    QSqlDatabase sourceDb;
+    Mode mode;
+};
+
+
+tst_QSqlThread::tst_QSqlThread()
+    : threadFinishedCount(0)
+{
+    static QSqlDatabase static_qtest_db = QSqlDatabase();
+    qtest = qTableName("qtest", __FILE__, static_qtest_db);
+}
+
+tst_QSqlThread::~tst_QSqlThread()
+{
+}
+
+void tst_QSqlThread::generic_data(const QString& engine)
+{
+    if ( dbs.fillTestTable(engine) == 0 ) {
+        if(engine.isEmpty())
+           QSKIP( "No database drivers are available in this Qt configuration");
+        else
+           QSKIP( (QString("No database drivers of type %1 are available in this Qt configuration").arg(engine)).toLocal8Bit());
+    }
+}
+
+void tst_QSqlThread::dropTestTables()
+{
+    for (int i = 0; i < dbs.dbNames.size(); ++i) {
+        QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
+        QSqlQuery q(db);
+
+        tst_Databases::safeDropTables(db, QStringList() << qtest << qTableName("qtest2", __FILE__, db) << qTableName("emptytable", __FILE__, db));
+    }
+}
+
+void tst_QSqlThread::createTestTables()
+{
+    for (int i = 0; i < dbs.dbNames.size(); ++i) {
+        QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
+        QSqlQuery q(db);
+
+        QVERIFY_SQL(q, exec("create table " + qtest
+                       + "(id int NOT NULL primary key, name varchar(20), title int)"));
+
+        QVERIFY_SQL(q, exec("create table " + qTableName("qtest2", __FILE__, db)
+                       + "(id int NOT NULL primary key, title varchar(20))"));
+
+        QVERIFY_SQL(q, exec("create table " + qTableName("emptytable", __FILE__, db)
+                       + "(id int NOT NULL primary key)"));
+    }
+}
+
+void tst_QSqlThread::repopulateTestTables()
+{
+    for (int i = 0; i < dbs.dbNames.size(); ++i) {
+        QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
+        QSqlQuery q(db);
+
+        QVERIFY_SQL(q, exec("delete from " + qtest));
+        QVERIFY_SQL(q, exec("insert into " + qtest + " values(1, 'harry', 1)"));
+        QVERIFY_SQL(q, exec("insert into " + qtest + " values(2, 'trond', 2)"));
+        QVERIFY_SQL(q, exec("insert into " + qtest + " values(3, 'vohi', 3)"));
+
+        QVERIFY_SQL(q, exec("delete from " + qTableName("qtest2", __FILE__, db)));
+        QVERIFY_SQL(q, exec("insert into " + qTableName("qtest2", __FILE__, db) + " values(1, 'herr')"));
+        QVERIFY_SQL(q, exec("insert into " + qTableName("qtest2", __FILE__, db) + " values(2, 'mister')"));
+    }
+}
+
+void tst_QSqlThread::recreateTestTables()
+{
+    dropTestTables();
+    createTestTables();
+    repopulateTestTables();
+}
+
+void tst_QSqlThread::initTestCase()
+{
+    QVERIFY(dbs.open());
+    recreateTestTables();
+}
+
+void tst_QSqlThread::cleanupTestCase()
+{
+    dropTestTables();
+    dbs.close();
+}
+
+void tst_QSqlThread::init()
+{
+    threadFinishedCount = 0;
+    counter.storeRelaxed(4);
+}
+
+void tst_QSqlThread::cleanup()
+{
+//     repopulateTestTables();
+}
+
+// This test creates two threads that clone their db connection and read
+// from it
+void tst_QSqlThread::simpleThreading()
+{
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+
+    QtTestSqlThread t1(db);
+    QtTestSqlThread t2(db);
+
+    connect(&t1, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+    connect(&t2, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+
+    t1.start();
+    t2.start();
+
+    QTRY_VERIFY(threadFinishedCount >= 2);
+}
+
+// This test creates two threads that clone their db connection and read
+// or write
+void tst_QSqlThread::readWriteThreading()
+{
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+    else if (tst_Databases::isMSAccess(db))
+        QSKIP("does not work with MS Access databases");
+
+    SqlProducer producer(db);
+    SqlConsumer consumer(db);
+
+    connect(&producer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+    connect(&consumer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+
+    producer.start();
+    consumer.start();
+
+    QTRY_VERIFY_WITH_TIMEOUT(threadFinishedCount >= 2, 10000);
+}
+
+#ifdef QOCI_THREADED
+// run with n threads in parallel. Change this constant to hammer the poor DB server even more
+static const int maxThreadCount = 4;
+#endif
+
+void tst_QSqlThread::readFromSingleConnection()
+{
+#ifdef QOCI_THREADED
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+
+    QObject cleanupHelper; // make sure the threads die when we exit the scope
+    for (int i = 0; i < maxThreadCount; ++i) {
+        SqlThread *reader = new SqlThread(SqlThread::SimpleReading, db, &cleanupHelper);
+        connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+        reader->start();
+    }
+
+    QTRY_VERIFY(threadFinishedCount >= maxThreadCount);
+#endif
+}
+
+void tst_QSqlThread::readWriteFromSingleConnection()
+{
+#ifdef QOCI_THREADED
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+
+    QObject cleanupHelper;
+    for (int i = 0; i < maxThreadCount; ++i) {
+        SqlThread *reader = new SqlThread(SqlThread::SimpleReading, db, &cleanupHelper);
+        connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+        reader->start();
+
+        SqlThread *writer = new SqlThread(SqlThread::SimpleWriting, db, &cleanupHelper);
+        connect(writer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+        writer->start();
+    }
+
+    QTRY_VERIFY(threadFinishedCount >= maxThreadCount * 2);
+#endif
+}
+
+void tst_QSqlThread::preparedReadWriteFromSingleConnection()
+{
+#ifdef QOCI_THREADED
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+
+    QObject cleanupHelper;
+    for (int i = 0; i < maxThreadCount; ++i) {
+        SqlThread *reader = new SqlThread(SqlThread::PreparedReading, db, &cleanupHelper);
+        connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+        reader->start();
+
+        SqlThread *writer = new SqlThread(SqlThread::PreparedWriting, db, &cleanupHelper);
+        connect(writer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
+        writer->start();
+    }
+
+    QTRY_VERIFY(threadFinishedCount >= maxThreadCount * 2);
+#endif
+}
+
+void tst_QSqlThread::transactionsFromSingleConnection()
+{
+#ifdef QOCI_THREADED
+    QFETCH(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    if (db.databaseName() == ":memory:")
+        QSKIP("does not work with in-memory databases");
+
+    // start and commit a transaction
+    QVERIFY_SQL(db, db.transaction());
+    preparedReadWriteFromSingleConnection(); // read and write from multiple threads
+    if (QTest::currentTestFailed())
+        return;
+    QVERIFY_SQL(db, db.commit());
+
+    // reset test environment
+    threadFinishedCount = 0;
+
+    // start and roll back a transaction
+    QVERIFY_SQL(db, db.transaction());
+    preparedReadWriteFromSingleConnection(); // read and write from multiple threads
+    if (QTest::currentTestFailed())
+        return;
+    QVERIFY_SQL(db, db.rollback());
+#endif
+}
+
+QTEST_MAIN(tst_QSqlThread)
+#include "tst_qsqlthread.moc"