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#include <QtTest/QtTest>

#include <QtGui>

#include <qsqldriver.h>

#include <qsqldatabase.h>

#include <qsqlerror.h>

#include <qsqlfield.h>

#include <qsqlquery.h>

#include <qsqlrecord.h>

#include <qsqlquerymodel.h>

#include <qsortfilterproxymodel.h>

#include "../qsqldatabase/tst_databases.h"

//TESTED_CLASS=

//TESTED_FILES=

Q_DECLARE_METATYPE(Qt::Orientation)

class tst_QSqlQueryModel : public QObject

{

    Q_OBJECT

public:

    tst_QSqlQueryModel();

    virtual ~tst_QSqlQueryModel();

public slots:

    void initTestCase();

    void cleanupTestCase();

    void init();

    void cleanup();

private slots:

    void insertColumn_data() { generic_data(); }

    void insertColumn();

    void removeColumn_data() { generic_data(); }

    void removeColumn();

    void record_data() { generic_data(); }

    void record();

    void setHeaderData_data() { generic_data(); }

    void setHeaderData();

    void fetchMore_data() { generic_data(); }

    void fetchMore();

    //problem specific tests

    void withSortFilterProxyModel_data() { generic_data(); }

    void withSortFilterProxyModel();

    void setQuerySignalEmission_data() { generic_data(); }

    void setQuerySignalEmission();

    void setQueryWithNoRowsInResultSet_data() { generic_data(); }

    void setQueryWithNoRowsInResultSet();

    void task_180617();

    void task_180617_data() { generic_data(); }

private:

    void generic_data(const QString &engine=QString());

    void dropTestTables(QSqlDatabase db);

    void createTestTables(QSqlDatabase db);

    void populateTestTables(QSqlDatabase db);

    tst_Databases dbs;

};

/* Stupid class that makes protected members public for testing */

class DBTestModel: public QSqlQueryModel

{

public:

    DBTestModel(QObject *parent = 0): QSqlQueryModel(parent) {}

    QModelIndex indexInQuery(const QModelIndex &item) const { return QSqlQueryModel::indexInQuery(item); }

};

tst_QSqlQueryModel::tst_QSqlQueryModel()

{

}

tst_QSqlQueryModel::~tst_QSqlQueryModel()

{

}

void tst_QSqlQueryModel::initTestCase()

{

    qRegisterMetaType<QModelIndex>("QModelIndex");

    dbs.open();

    for (QStringList::ConstIterator it = dbs.dbNames.begin(); it != dbs.dbNames.end(); ++it) {

	QSqlDatabase db = QSqlDatabase::database((*it));

	CHECK_DATABASE(db);

	dropTestTables(db); //in case of leftovers

	createTestTables(db);

	populateTestTables(db);

    }

}

void tst_QSqlQueryModel::cleanupTestCase()

{

    for (QStringList::ConstIterator it = dbs.dbNames.begin(); it != dbs.dbNames.end(); ++it) {

	QSqlDatabase db = QSqlDatabase::database((*it));

	CHECK_DATABASE(db);

	dropTestTables(db);

    }

    dbs.close();

}

void tst_QSqlQueryModel::dropTestTables(QSqlDatabase db)

{

    QStringList tableNames;

    tableNames << qTableName("test")

            << qTableName("test2")

            << qTableName("test3")

            << qTableName("many");

    tst_Databases::safeDropTables(db, tableNames);

}

void tst_QSqlQueryModel::createTestTables(QSqlDatabase db)

{

    dropTestTables(db);

    QSqlQuery q(db);

    if(tst_Databases::isPostgreSQL(db))

        QVERIFY_SQL( q, exec("set client_min_messages='warning'"));

    QVERIFY_SQL( q, exec("create table " + qTableName("test") + "(id integer not null, name varchar(20), title integer, primary key (id))"));

    QVERIFY_SQL( q, exec("create table " + qTableName("test2") + "(id integer not null, title varchar(20), primary key (id))"));

    QVERIFY_SQL( q, exec("create table " + qTableName("test3") + "(id integer not null, primary key (id))"));

    QVERIFY_SQL( q, exec("create table " + qTableName("many") + "(id integer not null, name varchar(20), primary key (id))"));

}

void tst_QSqlQueryModel::populateTestTables(QSqlDatabase db)

{

    qWarning() << "Populating test tables, this can take quite a while... ZZZzzz...";

    bool hasTransactions = db.driver()->hasFeature(QSqlDriver::Transactions);

    QSqlQuery q(db), q2(db);

    tst_Databases::safeDropTables(db, QStringList() << qTableName("manytmp") << qTableName("test3tmp"));

    QVERIFY_SQL(q, exec("create table " + qTableName("manytmp") + "(id integer not null, name varchar(20), primary key (id))"));

    QVERIFY_SQL(q, exec("create table " + qTableName("test3tmp") + "(id integer not null, primary key (id))"));

    if (hasTransactions) QVERIFY_SQL(db, transaction());

    QVERIFY_SQL(q, exec("insert into " + qTableName("test") + " values(1, 'harry', 1)"));

    QVERIFY_SQL(q, exec("insert into " + qTableName("test") + " values(2, 'trond', 2)"));

    QVERIFY_SQL(q, exec("insert into " + qTableName("test2") + " values(1, 'herr')"));

    QVERIFY_SQL(q, exec("insert into " + qTableName("test2") + " values(2, 'mister')"));

    QVERIFY_SQL(q, exec(QString("insert into " + qTableName("test3") + " values(0)")));

    QVERIFY_SQL(q, prepare("insert into "+qTableName("test3")+"(id) select id + ? from "+qTableName("test3tmp")));

    for (int i=1; i<260; i*=2) {

        q2.exec("delete from "+qTableName("test3tmp"));

        QVERIFY_SQL(q2, exec("insert into "+qTableName("test3tmp")+"(id) select id from "+qTableName("test3")));

        q.bindValue(0, i);

        QVERIFY_SQL(q, exec());

    }

    QVERIFY_SQL(q, exec(QString("insert into " + qTableName("many") + "(id, name) values (0, \'harry\')")));

    QVERIFY_SQL(q, prepare("insert into "+qTableName("many")+"(id, name) select id + ?, name from "+qTableName("manytmp")));

    for (int i=1; i < 2048; i*=2) {

        q2.exec("delete from "+qTableName("manytmp"));

        QVERIFY_SQL(q2, exec("insert into "+qTableName("manytmp")+"(id, name) select id, name from "+qTableName("many")));

        q.bindValue(0, i);

        QVERIFY_SQL(q, exec());

    }

    if (hasTransactions) QVERIFY_SQL(db, commit());

    tst_Databases::safeDropTables(db, QStringList() << qTableName("manytmp") << qTableName("test3tmp"));

}

void tst_QSqlQueryModel::generic_data(const QString& engine)

{

    if ( dbs.fillTestTable(engine) == 0 ) {

        if(engine.isEmpty())

           QSKIP( "No database drivers are available in this Qt configuration", SkipAll );

        else

           QSKIP( (QString("No database drivers of type %1 are available in this Qt configuration").arg(engine)).toLocal8Bit(), SkipAll );

    }

}

void tst_QSqlQueryModel::init()

{

}

void tst_QSqlQueryModel::cleanup()

{

}

void tst_QSqlQueryModel::removeColumn()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    DBTestModel model;

    model.setQuery(QSqlQuery("select * from " + qTableName("test"), db));

    model.fetchMore();

    QSignalSpy spy(&model, SIGNAL(columnsAboutToBeRemoved(QModelIndex, int, int)));

    QCOMPARE(model.columnCount(), 3);

    QVERIFY(model.removeColumn(0));

    QCOMPARE(spy.count(), 1);

    QVERIFY(*(QModelIndex *)spy.at(0).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(0).at(1).toInt(), 0);

    QCOMPARE(spy.at(0).at(2).toInt(), 0);

    QCOMPARE(model.columnCount(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), -1);

    QVERIFY(model.insertColumn(1));

    QCOMPARE(model.columnCount(), 3);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), -1);

    QCOMPARE(model.data(model.index(0, 0)).toString(), QString("harry"));

    QCOMPARE(model.data(model.index(0, 1)), QVariant());

    QCOMPARE(model.data(model.index(0, 2)).toInt(), 1);

    QCOMPARE(model.data(model.index(0, 3)), QVariant());

    QVERIFY(!model.removeColumn(42));

    QVERIFY(!model.removeColumn(3));

    QVERIFY(!model.removeColumn(1, model.index(1, 2)));

    QCOMPARE(model.columnCount(), 3);

    QVERIFY(model.removeColumn(2));

    QCOMPARE(spy.count(), 2);

    QVERIFY(*(QModelIndex *)spy.at(1).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(1).at(1).toInt(), 2);

    QCOMPARE(spy.at(1).at(2).toInt(), 2);

    QCOMPARE(model.columnCount(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), -1);

    QVERIFY(model.removeColumn(1));

    QCOMPARE(spy.count(), 3);

    QVERIFY(*(QModelIndex *)spy.at(2).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(2).at(1).toInt(), 1);

    QCOMPARE(spy.at(2).at(2).toInt(), 1);

    QCOMPARE(model.columnCount(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), -1);

    QCOMPARE(model.data(model.index(0, 0)).toString(), QString("harry"));

    QVERIFY(model.removeColumn(0));

    QCOMPARE(spy.count(), 4);

    QVERIFY(*(QModelIndex *)spy.at(3).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(3).at(1).toInt(), 0);

    QCOMPARE(spy.at(3).at(2).toInt(), 0);

    QCOMPARE(model.columnCount(), 0);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), -1);

}

void tst_QSqlQueryModel::insertColumn()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    DBTestModel model;

    model.setQuery(QSqlQuery("select * from " + qTableName("test"), db));

    model.fetchMore(); // necessary???

    QSignalSpy spy(&model, SIGNAL(columnsInserted(QModelIndex, int, int)));

    QCOMPARE(model.data(model.index(0, 0)).toInt(), 1);

    QCOMPARE(model.data(model.index(0, 1)).toString(), QString("harry"));

    QCOMPARE(model.data(model.index(0, 2)).toInt(), 1);

    QCOMPARE(model.data(model.index(0, 3)), QVariant());

    QVERIFY(model.insertColumn(1));

    QCOMPARE(spy.count(), 1);

    QVERIFY(*(QModelIndex *)spy.at(0).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(0).at(1).toInt(), 1);

    QCOMPARE(spy.at(0).at(2).toInt(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), 0);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 4)).column(), -1);

    QCOMPARE(model.data(model.index(0, 0)).toInt(), 1);

    QCOMPARE(model.data(model.index(0, 1)), QVariant());

    QCOMPARE(model.data(model.index(0, 2)).toString(), QString("harry"));

    QCOMPARE(model.data(model.index(0, 3)).toInt(), 1);

    QCOMPARE(model.data(model.index(0, 4)), QVariant());

    QVERIFY(!model.insertColumn(-1));

    QVERIFY(!model.insertColumn(100));

    QVERIFY(!model.insertColumn(1, model.index(1, 1)));

    QVERIFY(model.insertColumn(0));

    QCOMPARE(spy.count(), 2);

    QVERIFY(*(QModelIndex *)spy.at(1).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(1).at(1).toInt(), 0);

    QCOMPARE(spy.at(1).at(2).toInt(), 0);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), 0);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 4)).column(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 5)).column(), -1);

    QVERIFY(!model.insertColumn(6));

    QVERIFY(model.insertColumn(5));

    QCOMPARE(spy.count(), 3);

    QVERIFY(*(QModelIndex *)spy.at(2).at(0).constData() == QModelIndex());

    QCOMPARE(spy.at(2).at(1).toInt(), 5);

    QCOMPARE(spy.at(2).at(2).toInt(), 5);

    QCOMPARE(model.indexInQuery(model.index(0, 0)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 1)).column(), 0);

    QCOMPARE(model.indexInQuery(model.index(0, 2)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 3)).column(), 1);

    QCOMPARE(model.indexInQuery(model.index(0, 4)).column(), 2);

    QCOMPARE(model.indexInQuery(model.index(0, 5)).column(), -1);

    QCOMPARE(model.indexInQuery(model.index(0, 6)).column(), -1);

    bool isToUpper = db.driverName().startsWith("QIBASE") || db.driverName().startsWith("QOCI") || db.driverName().startsWith("QDB2");

    QCOMPARE(model.record().field(0).name(), QString());

    QCOMPARE(model.record().field(1).name(), isToUpper ? QString("ID") : QString("id"));

    QCOMPARE(model.record().field(2).name(), QString());

    QCOMPARE(model.record().field(3).name(), isToUpper ? QString("NAME") : QString("name"));

    QCOMPARE(model.record().field(4).name(), isToUpper ? QString("TITLE") : QString("title"));

    QCOMPARE(model.record().field(5).name(), QString());

    QCOMPARE(model.record().field(6).name(), QString());

}

void tst_QSqlQueryModel::record()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    QSqlQueryModel model;

    model.setQuery(QSqlQuery("select * from " + qTableName("test"), db));

    QSqlRecord rec = model.record();

    bool isToUpper = db.driverName().startsWith("QIBASE") || db.driverName().startsWith("QOCI") || db.driverName().startsWith("QDB2");

    QCOMPARE(rec.count(), 3);

    QCOMPARE(rec.fieldName(0), isToUpper ? QString("ID") : QString("id"));

    QCOMPARE(rec.fieldName(1), isToUpper ? QString("NAME") : QString("name"));

    QCOMPARE(rec.fieldName(2), isToUpper ? QString("TITLE") : QString("title"));

    QCOMPARE(rec.value(0), QVariant());

    QCOMPARE(rec.value(1), QVariant());

    QCOMPARE(rec.value(2), QVariant());

    rec = model.record(0);

    QCOMPARE(rec.fieldName(0), isToUpper ? QString("ID") : QString("id"));

    QCOMPARE(rec.fieldName(1), isToUpper ? QString("NAME") : QString("name"));

    QCOMPARE(rec.fieldName(2), isToUpper ? QString("TITLE") : QString("title"));

    QCOMPARE(rec.value(0).toString(), QString("1"));

    QCOMPARE(rec.value(1), QVariant("harry"));

    QCOMPARE(rec.value(2), QVariant(1));

}

void tst_QSqlQueryModel::setHeaderData()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    QSqlQueryModel model;

    QVERIFY(!model.setHeaderData(5, Qt::Vertical, "foo"));

    QVERIFY(model.headerData(5, Qt::Vertical).isValid());

    qRegisterMetaType<Qt::Orientation>("Qt::Orientation");

    QSignalSpy spy(&model, SIGNAL(headerDataChanged(Qt::Orientation, int, int)));

    QVERIFY(model.setHeaderData(2, Qt::Horizontal, "bar"));

    QCOMPARE(model.headerData(2, Qt::Horizontal).toString(), QString("bar"));

    QCOMPARE(spy.count(), 1);

    QCOMPARE(qvariant_cast<Qt::Orientation>(spy.value(0).value(0)), Qt::Horizontal);

    QCOMPARE(spy.value(0).value(1).toInt(), 2);

    QCOMPARE(spy.value(0).value(2).toInt(), 2);

    bool isToUpper = db.driverName().startsWith("QIBASE") || db.driverName().startsWith("QOCI") || db.driverName().startsWith("QDB2");

    QCOMPARE(model.headerData(0, Qt::Horizontal).toString(), isToUpper ? QString("ID") : QString("id"));

    QCOMPARE(model.headerData(1, Qt::Horizontal).toString(), isToUpper ? QString("NAME") : QString("name"));

    QCOMPARE(model.headerData(2, Qt::Horizontal).toString(), QString("bar"));

    QVERIFY(model.headerData(3, Qt::Horizontal).isValid());

}

void tst_QSqlQueryModel::fetchMore()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    QSqlQueryModel model;

    QSignalSpy spy(&model, SIGNAL(rowsInserted(QModelIndex, int, int)));

    model.setQuery(QSqlQuery("select * from " + qTableName("many"), db));

    int rowCount = model.rowCount();

    QCOMPARE(spy.value(0).value(1).toInt(), 0);

    QCOMPARE(spy.value(0).value(2).toInt(), rowCount - 1);

    // If the driver doesn't return the query size fetchMore() causes the

    // model to grow and new signals are emitted

    if (!db.driver()->hasFeature(QSqlDriver::QuerySize)) {

        spy.clear();

        model.fetchMore();

        int newRowCount = model.rowCount();

        QCOMPARE(spy.value(0).value(1).toInt(), rowCount);

        QCOMPARE(spy.value(0).value(2).toInt(), newRowCount - 1);

    }

}

// For task 149491: When used with QSortFilterProxyModel, a view and a

// database that doesn't support the QuerySize feature, blank rows was

// appended if the query returned more than 256 rows and setQuery()

// was called more than once. This because an insertion of rows was

// triggered at the same time as the model was being cleared.

void tst_QSqlQueryModel::withSortFilterProxyModel()

{

    QFETCH(QString, dbName);

    QSqlDatabase db = QSqlDatabase::database(dbName);

    CHECK_DATABASE(db);

    if (db.driver()->hasFeature(QSqlDriver::QuerySize))

        QSKIP("Test applies only for drivers not reporting the query size.", SkipSingle);

    QSqlQueryModel model;

    model.setQuery(QSqlQuery("SELECT * FROM " + qTableName("test3"), db));

    QSortFilterProxyModel proxy;

    proxy.setSourceModel(&model);

    QTableView view;

    view.setModel(&proxy);

    QSignalSpy modelRowsRemovedSpy(&model, SIGNAL(rowsRemoved(const QModelIndex &, int, int)));

    QSignalSpy modelRowsInsertedSpy(&model, SIGNAL(rowsInserted(const QModelIndex &, int, int)));

    model.setQuery(QSqlQuery("SELECT * FROM " + qTableName("test3"), db));

    view.scrollToBottom();

    QTestEventLoop::instance().enterLoop(1);

    QCOMPARE(proxy.rowCount(), 511);

    // The second call to setQuery() clears the model by removing it's rows.

    // Only 256 rows because that is what was cached.

    QCOMPARE(modelRowsRemovedSpy.count(), 1);

    QCOMPARE(modelRowsRemovedSpy.value(0).value(1).toInt(), 0);

    QCOMPARE(modelRowsRemovedSpy.value(0).value(2).toInt(), 255);

    // The call to scrollToBottom() forces the model to fetch all rows,

    // which will be done in two steps.

    QCOMPARE(modelRowsInsertedSpy.count(), 2);

    QCOMPARE(modelRowsInsertedSpy.value(0).value(1).toInt(), 0);

    QCOMPARE(modelRowsInsertedSpy.value(0).value(2).toInt(), 255);

    QCOMPARE(modelRowsInsertedSpy.value(1).value(1).toInt(), 256);

    QCOMPARE(modelRowsInsertedSpy.value(1).value(2).toInt(), 510);

}

// For task 155402: When the model is already empty when setQuery() is called

// no rows have to be removed and rowsAboutToBeRemoved and rowsRemoved should

// not be emitted.