/**
 * Copyright (C)  2007  Brad Hards <bradh@frogmouth.net>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <QtCrypto>
#include <QtTest/QtTest>

#include <limits>

#ifdef QT_STATICPLUGIN
#include "import_plugins.h"
#endif

class TestClass1 : public QObject
{
    Q_OBJECT

public:
    TestClass1() { };
    TestClass1(const TestClass1 & ):QObject( nullptr ) { };

public Q_SLOTS:
    void voidMethod() { };
    QString qstringMethod()  { return QString(); };
    bool boolMethod( const QString & )  { return true; };
    QString returnArg( const QString &s )  { return s; };
    QByteArray returnArg( const QByteArray &a )  { return a; };
    QString returnRepeatArg( const QString &s )  { return QString( s+s ); };
    QString tenArgs( const QString &s, int, int, int, int, int, int, int, int, int)
    {
        return QString( s );
    };
    QString elevenArgs( const QString &s, int, int, int, int, int, int, int, int, int, int)
    {
        return QString( s );
    };
};

Q_DECLARE_METATYPE( TestClass1 )

class MetaTypeUnitTest : public QObject
{
  Q_OBJECT

private Q_SLOTS:
    void initTestCase();
    void cleanupTestCase();
    void returnTypeTest();
    void invokeMethodTest();
private:
    QCA::Initializer* m_init;
};

void MetaTypeUnitTest::initTestCase()
{
    m_init = new QCA::Initializer;
}

void MetaTypeUnitTest::cleanupTestCase()
{
    QCA::unloadAllPlugins();
    delete m_init;
}

void MetaTypeUnitTest::returnTypeTest()
{
    TestClass1 testClass1;
    QList<QByteArray> args;

    // returns a null type name because that is what void does...
    QCOMPARE( QByteArray( "void" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "voidMethod" ), args ) );
    QCOMPARE( QByteArray( "QString" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "qstringMethod" ), args ) );

    // returns a null type, because args don't match
    QCOMPARE( QByteArray( "" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "boolMethod" ), args ) );

    args << "QString";
    QCOMPARE( QByteArray( "QString" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "returnArg" ), args ) );
    QCOMPARE( QByteArray( "bool" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "boolMethod" ), args ) );
    args.clear();

    args << "QByteArray";
    QCOMPARE( QByteArray( "QByteArray" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "returnArg" ), args ) );
    args.clear();

    args << "QString" << "int" << "int" << "int" << "int" << "int" << "int" << "int" << "int";

    // wrong number of arguments - has 9, needs 10
    QCOMPARE( QByteArray( "" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "tenArgs" ), args ) );

    // match
    args << "int";
    QCOMPARE( QByteArray( "QString" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "tenArgs" ), args ) );

    args << "int";
    QCOMPARE( QByteArray( "QString" ), QCA::methodReturnType( testClass1.metaObject(), QByteArray( "elevenArgs" ), args ) );
}

void MetaTypeUnitTest::invokeMethodTest()
{
    TestClass1 *testClass1 = new TestClass1;
    QVariantList args;

    bool ret;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "voidMethod" ), args, nullptr );
    QVERIFY( ret );

    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "noSuchMethod" ), args, nullptr );
    QVERIFY( ret == false );

    QVariant stringRes;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "qstringMethod" ), args, &stringRes );
    QVERIFY( ret );
    QVERIFY( stringRes.isValid() );

    QVariant result ( false );
    QString fakeArg;
    args << fakeArg;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "boolMethod" ), args, &result );
    QVERIFY( ret );
    QCOMPARE( result.toBool(), true );

    result = QByteArray();
    args.clear();
    QByteArray myArray( "array" );
    args << myArray;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "returnArg" ), args, &result );
    QVERIFY( ret );
    QCOMPARE( result.toByteArray(), myArray );

    result = QString();
    args.clear();
    QString myString = QStringLiteral( "test words" );
    args << myString;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "returnArg" ), args, &result );
    QVERIFY( ret );
    QCOMPARE( result.toString(), myString );

    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "returnRepeatArg" ), args, &result );
    QVERIFY( ret );
    QCOMPARE( result.toString(), QString( myString + myString ) );

    // 9 arguments - no matching method
    result = QStringLiteral( "unchanged" );
    args << 0 << 0 << 0 << 0 << 0 << 0 << 0 << 0;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "tenArgs" ), args, &result );
    QVERIFY( ret == false );
    QCOMPARE( result.toString(), QStringLiteral( "unchanged" ) );

    // 10 args
    args << 0;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "tenArgs" ), args, &result );
    QVERIFY( ret );
    QCOMPARE( result.toString(), myString );

    // 11 args
    result = QStringLiteral( "unchanged" );
    args << 0;
    ret = QCA::invokeMethodWithVariants( testClass1, QByteArray( "elevenArgs" ), args, &result );
    QVERIFY( ret == false );
    QCOMPARE( result.toString(), QStringLiteral( "unchanged" ) );

    delete testClass1;
}

QTEST_MAIN(MetaTypeUnitTest)

#include "metatype.moc"