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/*!
    \page qtquicktest-index.html
    \title Qt Quick Test
    \brief Unit testing framework for QML.

    \section1 Introduction

    \l {Qt Quick Test QML Types}{Qt Quick Test} is a unit test framework for QML applications.
    Test cases are written as JavaScript functions within a \l [QML] TestCase
    type:

    \qml
    import QtQuick 2.3
    import QtTest 1.0

    TestCase {
        name: "MathTests"

        function test_math() {
            compare(2 + 2, 4, "2 + 2 = 4")
        }

        function test_fail() {
            compare(2 + 2, 5, "2 + 2 = 5")
        }
    }
    \endqml

    Functions whose names start with \c{test_} are treated as test cases
    to be executed. See the documentation for the \l [QML] TestCase and
    \l [QML] SignalSpy types for more information on writing test cases.

    \section1 Running Tests

    Test cases are launched by a C++ harness that consists of
    the following code:

    \code
    #include <QtQuickTest/quicktest.h>
    QUICK_TEST_MAIN(example)
    \endcode

    Where "example" is the identifier to use to uniquely identify
    this set of tests. Finally, add \c{CONFIG += qmltestcase} to the project
    file:

    \badcode
    TEMPLATE = app
    TARGET = tst_example
    CONFIG += warn_on qmltestcase
    SOURCES += tst_example.cpp
    \endcode

    The test harness scans the specified source directory recursively
    for "tst_*.qml" files. If \c{QUICK_TEST_SOURCE_DIR} is not defined,
    then the current directory will be scanned when the harness is run.
    Other *.qml files may appear for auxillary QML components that are
    used by the test.

    The \c{-input} command-line option can be set at runtime to run
    test cases from a different directory. This may be needed to run
    tests on a target device where the compiled-in directory name refers
    to a host. For example:

    \badcode
    tst_example -input /mnt/SDCard/qmltests
    \endcode

    It is also possible to run a single file using the \c{-input} option.
    For example:

    \badcode
    tst_example -input data/test.qml
    \endcode

    \badcode
    tst_example -input <full_path>/test.qml
    \endcode

    \note Specifying the full path to the qml test file is for example
    needed for shadow builds.

    If your test case needs QML imports, then you can add them as
    \c{-import} options to the test program command-line.

    If \c IMPORTPATH is specified in your .pro file, each import path added to \c IMPORTPATH
    will be passed as a command-line argument when the test is run using "make check":

    \badcode
    IMPORTPATH += $$PWD/../imports/my_module1 $$PWD/../imports/my_module2
    \endcode

    The \c{-functions} command-line option will return a list of the current
    tests functions. It is possible to run a single test function using the name
    of the test function as an argument. For example:

    \badcode
    tst_example Test_Name::function1
    \endcode

    The \c{-help} command-line option will return all the options available.

    \badcode
    tst_example -help
    \endcode

    \section1 Executing C++ Before QML Tests

    To execute C++ code before any of the QML tests are run, the
    \c QUICK_TEST_MAIN_WITH_SETUP macro can be used. This can be useful for
    setting context properties on the QML engine, amongst other things.

    The macro is identical to \l QUICK_TEST_MAIN, except that it takes an
    additional \c QObject* argument. The test framework will call slots and
    invokable functions with the following names:

    \table
        \header
            \li Name
            \li Purpose
        \row
            \li void qmlEngineAvailable(QQmlEngine*)
            \li Called when the QML engine is available.
                Any \l {QQmlEngine::addImportPath}{import paths},
                \l {QQmlEngine::addPluginPath}{plugin paths},
                and \l {QQmlFileSelector::setExtraSelectors}{extra file selectors}
                will have been set on the engine by this point.
    \endtable

    Each function will be called once for each \c tst_*.qml file, so any
    arguments are unique to that test. For example, this means that each QML
    test file will have its own QML engine.

    The following example demonstrates how the macro can be used to set context
    properties on the QML engine:

    \code
    #include <QtQuickTest>
    #include <QQmlEngine>
    #include <QQmlContext>

    class Setup : public QObject
    {
    public:
        Setup() {}

    public slots:
        void qmlEngineAvailable(QQmlEngine *engine)
        {
            engine->rootContext()->setContextProperty("myContextProperty", QVariant(true));
        }
    };

    QUICK_TEST_MAIN_WITH_SETUP(mytest, Setup)

    #include "tst_mytest.moc"
    \endcode

    \section1 Licenses

    Qt Quick Tests is available under commercial licenses from \l{The Qt Company}.
    In addition, it is available under free software licenses. Since Qt 5.4,
    these free software licenses are
    \l{GNU Lesser General Public License, version 3}, or
    the \l{GNU General Public License, version 2}.
    See \l{Qt Licensing} for further details.
*/
