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#ifndef PatternistSDK_TestItem_H

#define PatternistSDK_TestItem_H

#include "TestResult.h"

#include "TreeItem.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

template<typename A, typename B> struct QPair;

namespace QPatternistSDK

{

    class XMLWriter;

    class TestSuite;

    /**

     * @short base class for all classes which

     * represent an element in an XQuery Test Suite catalog.

     *

     * @ingroup PatternistSDK

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class Q_PATTERNISTSDK_EXPORT TestItem : public TreeItem

    {

    public:

        /**

         * Determines how far an test case execution should go.

         */

        enum ExecutionStage

        {

            /**

             * The query will not be run. It will only go through the (whole) compilation stage.

             */

            CompileOnly = 1,

            /**

             * The query will be compiled and run, as ordinary.

             */

            CompileAndRun

        };

        /**

         * Represents a summary of test results for a collection

         * of tests. QPair::first contains the amount of

         * passed tests; QPair::second contains the count of

         * all tests. For example TestCase::summary() returns

         * ResultSummary(0, 1) or ResultSummary(1, 1) depending

         * on whether the TestCase have succeeded or not.

         */

        typedef QPair<int, int> ResultSummary;

        /**

         * Executes the test case(s) this TestItem represents,

         * and return the TestResult. For example, the TestGroup

         * returns the result of its children concatenated, while

         * TestCase always returns a list containing one

         * TestResult(what it evaluated to).

         */

        virtual TestResult::List execute(const ExecutionStage stage,

                                         TestSuite *ts) = 0;

        /**

         * @todo Rename this function. Perhaps create a type() hierarchy

         * instead.

         */

        virtual bool isFinalNode() const = 0;

        /**

         * @returns a ResultSummary for this TestItem.

         */

        virtual ResultSummary resultSummary() const = 0;

        /**

         * Serializes into the corresponding elements attributes

         * specified in XQTSCatalog.xsd.

         *

         * @note Sub-classes must assume the XQTSCatalog namespace

         * is the default namespace, and not add any namespace declarations.

         */

        //virtual void toXML(XMLWriter &receiver) const = 0;

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif

// vim: et:ts=4:sw=4:sts=4