    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     *
     * This file incorporates work covered by the following license notice:
     *
     *   Licensed to the Apache Software Foundation (ASF) under one or more
     *   contributor license agreements. See the NOTICE file distributed
     *   with this work for additional information regarding copyright
     *   ownership. The ASF licenses this file to you under the Apache
     *   License, Version 2.0 (the "License"); you may not use this file
     *   except in compliance with the License. You may obtain a copy of
     *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
     */

    #include <sal/types.h>
    #include <cppunit/TestAssert.h>
    #include <cppunit/TestFixture.h>
    #include <cppunit/extensions/HelperMacros.h>
    #include <cppunit/plugin/TestPlugIn.h>

    #include <rtl/ustrbuf.hxx>
    #include <com/sun/star/lang/IllegalArgumentException.hpp>
    #include <com/sun/star/util/DateTime.hpp>
    #include <com/sun/star/util/Date.hpp>
    #include <com/sun/star/util/Duration.hpp>

    #include <sfx2/Metadatable.hxx>
    #include <sfx2/XmlIdRegistry.hxx>

    #include <memory>

    using namespace ::com::sun::star;

    namespace {

    class MetadatableTest
        : public ::CppUnit::TestFixture
    {
    public:
        void test();

        CPPUNIT_TEST_SUITE(MetadatableTest);
        CPPUNIT_TEST(test);
        CPPUNIT_TEST_SUITE_END();

    private:
    };

    class MockMetadatable
        : public ::sfx2::Metadatable
    {
    private:
        ::sfx2::IXmlIdRegistry & m_rRegistry;

    public:
        MockMetadatable(::sfx2::IXmlIdRegistry & i_rReg,
                bool const i_isInClip = false)
            : m_rRegistry(i_rReg)
            , m_bInClipboard(i_isInClip), m_bInUndo(false), m_bInContent(true) {}
        bool m_bInClipboard;
        bool m_bInUndo;
        bool m_bInContent;
        virtual bool IsInClipboard() const override { return m_bInClipboard; }
        virtual bool IsInUndo() const override { return m_bInUndo; }
        virtual bool IsInContent() const override { return m_bInContent; }
        virtual ::sfx2::IXmlIdRegistry& GetRegistry() override { return m_rRegistry; }
        virtual css::uno::Reference< css::rdf::XMetadatable > MakeUnoObject() override { return nullptr; }
    };

    void MetadatableTest::test()
    {
        std::unique_ptr< ::sfx2::IXmlIdRegistry > const pReg(
            ::sfx2::createXmlIdRegistry(false) );
        std::unique_ptr< ::sfx2::IXmlIdRegistry > const pRegClip(
            ::sfx2::createXmlIdRegistry(true) );

        MockMetadatable m1(*pReg);
        MockMetadatable m2(*pReg);
        MockMetadatable m3(*pReg);
        MockMetadatable m4(*pReg);
        MockMetadatable m5(*pReg);
        OUString empty;
        OUString content( "content.xml" );
        OUString const styles( "styles.xml" );
        OUString const sid1( "id1" );
        OUString const sid2( "id2" );
        OUString sid3( "id3" );
        OUString sid4( "id4" );
        beans::StringPair id1(content, sid1);
        beans::StringPair id2(content, sid2);
        beans::StringPair id3(content, sid3);
        beans::StringPair id4(styles,  sid4);
        beans::StringPair id3e(empty,  sid3);
        beans::StringPair id4e(empty,  sid4);
        m1.SetMetadataReference(id1);
        CPPUNIT_ASSERT_MESSAGE("set failed", bool(m1.GetMetadataReference() == id1));
        try {
            m2.SetMetadataReference(id1);
            CPPUNIT_ASSERT_MESSAGE("set duplicate succeeded", false);
        } catch (const lang::IllegalArgumentException &) { }
        m1.SetMetadataReference(id1);
        CPPUNIT_ASSERT_MESSAGE("set failed (existing)",
                bool(m1.GetMetadataReference() == id1));
        m1.EnsureMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("ensure failed (existing)",
                bool(m1.GetMetadataReference() == id1));

        m2.EnsureMetadataReference();
        beans::StringPair m2id(m2.GetMetadataReference());
        CPPUNIT_ASSERT_MESSAGE("ensure failed", !m2id.Second.isEmpty());
        m2.EnsureMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("ensure failed (idempotent)",
                bool(m2.GetMetadataReference() == m2id));

        m1.m_bInUndo = true;
        CPPUNIT_ASSERT_MESSAGE("move to undo failed",
                m1.GetMetadataReference().Second.isEmpty());

        m1.m_bInUndo = false;
        CPPUNIT_ASSERT_MESSAGE("move from undo failed",
                bool(m1.GetMetadataReference() == id1));

        m1.m_bInUndo = true;
        try {
            m2.SetMetadataReference(id1); // steal!
        } catch (lang::IllegalArgumentException &) {
            CPPUNIT_FAIL("set duplicate to undo failed");
        }
        m1.m_bInUndo = false;
        CPPUNIT_ASSERT_MESSAGE("move from undo: duplicate",
                m1.GetMetadataReference().Second.isEmpty());

        m3.RegisterAsCopyOf(m2);
        CPPUNIT_ASSERT_MESSAGE("copy: source", bool(m2.GetMetadataReference() == id1));
        CPPUNIT_ASSERT_MESSAGE("copy: duplicate",
                m3.GetMetadataReference().Second.isEmpty());
        m4.RegisterAsCopyOf(m3);
        CPPUNIT_ASSERT_MESSAGE("copy: source", bool(m2.GetMetadataReference() == id1));
        CPPUNIT_ASSERT_MESSAGE("copy: duplicate",
                m3.GetMetadataReference().Second.isEmpty());
        CPPUNIT_ASSERT_MESSAGE("copy: duplicate",
                m4.GetMetadataReference().Second.isEmpty());
        m2.m_bInUndo = true;
        CPPUNIT_ASSERT_MESSAGE("duplicate to undo",
                bool(m3.GetMetadataReference() == id1));
        CPPUNIT_ASSERT_MESSAGE("duplicate to undo",
                m2.GetMetadataReference().Second.isEmpty());
        m2.m_bInUndo = false;
        CPPUNIT_ASSERT_MESSAGE("duplicate from undo",
                bool(m2.GetMetadataReference() == id1));
        CPPUNIT_ASSERT_MESSAGE("duplicate from undo",
                m3.GetMetadataReference().Second.isEmpty());

        m4.EnsureMetadataReference(); // new!
        beans::StringPair m4id(m4.GetMetadataReference());
        CPPUNIT_ASSERT_MESSAGE("ensure on duplicate",
                !m4id.Second.isEmpty() && !(m4id == id1));

        MockMetadatable mc1(*pRegClip, true); // in clipboard
        MockMetadatable mc2(*pRegClip, true);
        MockMetadatable mc3(*pRegClip, true);
        MockMetadatable mc4(*pRegClip, true);
        MockMetadatable m2p(*pReg);
        MockMetadatable m3p(*pReg);

        mc1.SetMetadataReference(id2);
        CPPUNIT_ASSERT_MESSAGE("set failed", bool(mc1.GetMetadataReference() == id2));
        try {
            mc2.SetMetadataReference(id2);
            CPPUNIT_FAIL("set duplicate succeeded");
        } catch (const lang::IllegalArgumentException &) { }
        mc1.SetMetadataReference(id2);
        CPPUNIT_ASSERT_MESSAGE("set failed (existing)",
                bool(mc1.GetMetadataReference() == id2));
        mc1.EnsureMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("ensure failed (existing)",
                bool(mc1.GetMetadataReference() == id2));
        mc2.EnsureMetadataReference();
        beans::StringPair mc2id(mc2.GetMetadataReference());
        CPPUNIT_ASSERT_MESSAGE("ensure failed", !mc2id.Second.isEmpty());
        mc2.EnsureMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("ensure failed (idempotent)",
                bool(mc2.GetMetadataReference() == mc2id));
        mc2.RemoveMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("remove failed",
                mc2.GetMetadataReference().Second.isEmpty());

        // set up mc2 as copy of m2 and mc3 as copy of m3
        mc3.RegisterAsCopyOf(m3);
        CPPUNIT_ASSERT_MESSAGE("copy to clipboard (latent)",
                mc3.GetMetadataReference().Second.isEmpty() );
        mc2.RegisterAsCopyOf(m2);
        CPPUNIT_ASSERT_MESSAGE("copy to clipboard (non-latent)",
                bool(mc2.GetMetadataReference() == id1));
        // paste mc2 to m2p and mc3 to m3p
        m2p.RegisterAsCopyOf(mc2);
        CPPUNIT_ASSERT_MESSAGE("paste from clipboard (non-latent)",
                m2p.GetMetadataReference().Second.isEmpty() );
        m3p.RegisterAsCopyOf(mc3);
        CPPUNIT_ASSERT_MESSAGE("paste from clipboard (latent)",
                m3p.GetMetadataReference().Second.isEmpty() );
        // delete m2, m2p, m3
        m2.RemoveMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("remove failed",
                m2.GetMetadataReference().Second.isEmpty());
        CPPUNIT_ASSERT_MESSAGE("paste-remove (non-latent)",
                bool(m2p.GetMetadataReference() == id1));
        m2p.RemoveMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("remove failed",
                m2p.GetMetadataReference().Second.isEmpty());
        CPPUNIT_ASSERT_MESSAGE("paste-remove2 (non-latent)",
                bool(m3.GetMetadataReference() == id1));
        m3.RemoveMetadataReference();
        CPPUNIT_ASSERT_MESSAGE("remove failed",
                m3.GetMetadataReference().Second.isEmpty());
        CPPUNIT_ASSERT_MESSAGE("paste-remove (latent)",
                bool(m3p.GetMetadataReference() == id1));
        // delete mc2
        mc2.SetMetadataReference(beans::StringPair());
        CPPUNIT_ASSERT_MESSAGE("in clipboard becomes non-latent",
                mc3.GetMetadataReference().Second.isEmpty() );
        // paste mc2
        m2p.RegisterAsCopyOf(mc2);
        CPPUNIT_ASSERT_MESSAGE("remove-paste",
                m2p.GetMetadataReference().Second.isEmpty());
        CPPUNIT_ASSERT_MESSAGE("remove-paste (stolen)",
                bool(m3p.GetMetadataReference() == id1));

        // auto-detect stream
        m5.SetMetadataReference(id3e);
        CPPUNIT_ASSERT_MESSAGE("auto-detect (content)",
                bool(m5.GetMetadataReference() == id3));
        m5.m_bInContent = false;
        m5.SetMetadataReference(id4e);
        CPPUNIT_ASSERT_MESSAGE("auto-detect (styles)",
                bool(m5.GetMetadataReference() == id4));
    }

    CPPUNIT_TEST_SUITE_REGISTRATION(MetadatableTest);

    }

    CPPUNIT_PLUGIN_IMPLEMENT();

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V519 The 'm2.m_bInUndo' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 150, 155.