cppcompletion_test.cpp 91.5 KB
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
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**
** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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****************************************************************************/
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#include "cpptoolsplugin.h"
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#include "cppcompletionassist.h"
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#include <texteditor/plaintexteditor.h>
#include <texteditor/codeassist/iassistproposal.h>
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#include <texteditor/convenience.h>
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#include <utils/changeset.h>
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#include <utils/fileutils.h>

#include <QtTest>
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#include <QDebug>
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#include <QTextDocument>
#include <QDir>

/*!
    Tests for code completion.
 */
using namespace CPlusPlus;
using namespace CppTools;
using namespace CppTools::Internal;
using namespace TextEditor;
using namespace Core;

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struct TestData
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{
    QByteArray srcText;
    int pos;
    Snapshot snapshot;
    BaseTextEditorWidget *editor;
    QTextDocument *doc;
};

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static QStringList getCompletions(TestData &data, bool *replaceAccessOperator = 0)
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{
    QStringList completions;

    CppCompletionAssistInterface *ai = new CppCompletionAssistInterface(data.editor->document(), data.pos,
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                                                                        data.editor->editorDocument()->filePath(), ExplicitlyInvoked,
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                                                                        data.snapshot, QStringList(), QStringList());
    CppCompletionAssistProcessor processor;
    IAssistProposal *proposal = processor.perform(ai);
    if (!proposal)
        return completions;
    IAssistProposalModel *model = proposal->model();
    if (!model)
        return completions;
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    CppAssistProposalModel *listmodel = dynamic_cast<CppAssistProposalModel *>(model);
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    if (!listmodel)
        return completions;
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    const int pos = proposal->basePosition();
    const int length = data.pos - pos;
    const QString prefix = Convenience::textAt(QTextCursor(data.editor->document()), pos, length);
    if (!prefix.isEmpty())
        listmodel->filter(prefix);
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    for (int i = 0; i < listmodel->size(); ++i)
        completions << listmodel->text(i);

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    if (replaceAccessOperator)
        *replaceAccessOperator = listmodel->m_replaceDotForArrow;

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    return completions;
}

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static void setup(TestData *data)
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{
    data->pos = data->srcText.indexOf('@');
    QVERIFY(data->pos != -1);
    data->srcText[data->pos] = ' ';
    Document::Ptr src = Document::create(QDir::tempPath() + QLatin1String("/file.h"));
    Utils::FileSaver srcSaver(src->fileName());
    srcSaver.write(data->srcText);
    srcSaver.finalize();
    src->setUtf8Source(data->srcText);
    src->parse();
    src->check();

    data->snapshot.insert(src);

    data->editor = new PlainTextEditorWidget(0);
    QString error;
    data->editor->open(&error, src->fileName(), src->fileName());

    data->doc = data->editor->document();
}

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void CppToolsPlugin::test_completion_forward_declarations_present()
{
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    TestData data;
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    data.srcText = "\n"
            "class Foo\n"
            "{\n"
            "    struct Bar;\n"
            "    int i;\n"
            "};\n"
            "\n"
            "struct Foo::Bar \n"
            "{\n"
            "    Bar() {}\n"
            "};\n"
            "\n"
            "@\n"
            "// padding so we get the scope right\n";

    setup(&data);

    Utils::ChangeSet change;
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    change.insert(data.pos, QLatin1String("Foo::Bar::"));
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    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += 10;

    QStringList expected;
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    expected.append(QLatin1String("Bar"));
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    QStringList completions = getCompletions(data);

    QCOMPARE(completions, expected);
}

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void CppToolsPlugin::test_completion_inside_parentheses_c_style_conversion()
{
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    TestData data;
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    data.srcText = "\n"
            "class Base\n"
            "{\n"
            "    int i_base;\n"
            "};\n"
            "\n"
            "class Derived : public Base\n"
            "{\n"
            "    int i_derived;\n"
            "};\n"
            "\n"
            "void fun()\n"
            "{\n"
            "    Base *b = new Derived;\n"
            "    if (1)\n"
            "        @\n"
            "}\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("((Derived *)b)->");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 4);
    QVERIFY(completions.contains(QLatin1String("Derived")));
    QVERIFY(completions.contains(QLatin1String("Base")));
    QVERIFY(completions.contains(QLatin1String("i_derived")));
    QVERIFY(completions.contains(QLatin1String("i_base")));

}

void CppToolsPlugin::test_completion_inside_parentheses_cast_operator_conversion()
{
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    TestData data;
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    data.srcText = "\n"
            "class Base\n"
            "{\n"
            "    int i_base;\n"
            "};\n"
            "\n"
            "class Derived : public Base\n"
            "{\n"
            "    int i_derived;\n"
            "};\n"
            "\n"
            "void fun()\n"
            "{\n"
            "    Base *b = new Derived;\n"
            "    if (1)\n"
            "        @\n"
            "}\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("(static_cast<Derived *>(b))->");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 4);
    QVERIFY(completions.contains(QLatin1String("Derived")));
    QVERIFY(completions.contains(QLatin1String("Base")));
    QVERIFY(completions.contains(QLatin1String("i_derived")));
    QVERIFY(completions.contains(QLatin1String("i_base")));
}

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void CppToolsPlugin::test_completion_basic_1()
{
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    TestData data;
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    data.srcText = "\n"
            "class Foo\n"
            "{\n"
            "    void foo();\n"
            "    int m;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Foo f;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    QStringList basicCompletions = getCompletions(data);

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    QVERIFY(!basicCompletions.contains(QLatin1String("foo")));
    QVERIFY(!basicCompletions.contains(QLatin1String("m")));
    QVERIFY(basicCompletions.contains(QLatin1String("Foo")));
    QVERIFY(basicCompletions.contains(QLatin1String("func")));
    QVERIFY(basicCompletions.contains(QLatin1String("f")));
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    Utils::ChangeSet change;
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    change.insert(data.pos, QLatin1String("f."));
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    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += 2;

    QStringList memberCompletions = getCompletions(data);

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    QVERIFY(memberCompletions.contains(QLatin1String("foo")));
    QVERIFY(memberCompletions.contains(QLatin1String("m")));
    QVERIFY(!memberCompletions.contains(QLatin1String("func")));
    QVERIFY(!memberCompletions.contains(QLatin1String("f")));
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}

void CppToolsPlugin::test_completion_template_1()
{
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    TestData data;
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    data.srcText = "\n"
            "template <class T>\n"
            "class Foo\n"
            "{\n"
            "    typedef T Type;\n"
            "    T foo();\n"
            "    T m;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Foo f;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    Utils::ChangeSet change;
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    change.insert(data.pos, QLatin1String("Foo::"));
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    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += 5;

    QStringList completions = getCompletions(data);

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    QVERIFY(completions.contains(QLatin1String("Type")));
    QVERIFY(completions.contains(QLatin1String("foo")));
    QVERIFY(completions.contains(QLatin1String("m")));
    QVERIFY(!completions.contains(QLatin1String("T")));
    QVERIFY(!completions.contains(QLatin1String("f")));
    QVERIFY(!completions.contains(QLatin1String("func")));
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}
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void CppToolsPlugin::test_completion_template_2()
{
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    TestData data;
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    data.srcText = "\n"
            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T &at(int);\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("l.at(0).");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 3);
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    QVERIFY(completions.contains(QLatin1String("Tupple")));
    QVERIFY(completions.contains(QLatin1String("a")));
    QVERIFY(completions.contains(QLatin1String("b")));
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}

void CppToolsPlugin::test_completion_template_3()
{
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    TestData data;
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    data.srcText = "\n"
            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("l.t.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 3);
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    QVERIFY(completions.contains(QLatin1String("Tupple")));
    QVERIFY(completions.contains(QLatin1String("a")));
    QVERIFY(completions.contains(QLatin1String("b")));
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}

void CppToolsPlugin::test_completion_template_4()
{
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    TestData data;
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    data.srcText = "\n"
            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    typedef T U;\n"
            "    U u;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("l.u.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 3);
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    QVERIFY(completions.contains(QLatin1String("Tupple")));
    QVERIFY(completions.contains(QLatin1String("a")));
    QVERIFY(completions.contains(QLatin1String("b")));
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}

void CppToolsPlugin::test_completion_template_5()
{
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    TestData data;
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    data.srcText = "\n"
            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T u;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    typedef List<Tupple> LT;\n"
            "    LT l;"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("l.u.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 3);
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    QVERIFY(completions.contains(QLatin1String("Tupple")));
    QVERIFY(completions.contains(QLatin1String("a")));
    QVERIFY(completions.contains(QLatin1String("b")));
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}

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void CppToolsPlugin::test_completion_template_6()
{
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    TestData data;
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    data.srcText = "\n"
            "class Item\n"
            "{\n"
            "    int i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "class Container\n"
            "{\n"
            "    T get();\n"
            "};\n"
            "\n"
            "template <typename T> class Container;\n"
            "\n"
            "class ItemContainer: public Container<Item>\n"
            "{};\n"
            "ItemContainer container;\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("container.get().");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
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    QVERIFY(completions.contains(QLatin1String("Item")));
    QVERIFY(completions.contains(QLatin1String("i")));
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}

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void CppToolsPlugin::test_completion_template_7()
{
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    TestData data;
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    data.srcText = "\n"
            "struct Test\n"
            "{\n"
            "   int i;\n"
            "};\n"
            "\n"
            "template<typename T>\n"
            "struct TemplateClass\n"
            "{\n"
            "    T* ptr;\n"
            "\n"
            "    typedef T element_type;\n"
            "    TemplateClass(T* t) : ptr(t) {}\n"
            "    element_type* operator->()\n"
            "    {\n"
            "        return ptr;\n"
            "    }\n"
            "};\n"
            "\n"
            "TemplateClass<Test> p(new Test);\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p->");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Test")));
    QVERIFY(completions.contains(QLatin1String("i")));
}

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void CppToolsPlugin::test_completion_type_of_pointer_is_typedef()
{
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    TestData data;
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    data.srcText = "\n"
            "typedef struct Foo\n"
            "{\n"
            "    int foo;\n"
            "} Foo;\n"
            "Foo *bar;\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("bar->");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Foo")));
    QVERIFY(completions.contains(QLatin1String("foo")));
}

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void CppToolsPlugin::test_completion_instantiate_full_specialization()
{
    TestData data;
    data.srcText = "\n"
            "template<typename T>\n"
            "struct Template\n"
            "{\n"
            "   int templateT_i;\n"
            "};\n"
            "\n"
            "template<>\n"
            "struct Template<char>\n"
            "{\n"
            "    int templateChar_i;\n"
            "};\n"
            "\n"
            "Template<char> templateChar;\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("templateChar.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Template")));
    QVERIFY(completions.contains(QLatin1String("templateChar_i")));
}

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void CppToolsPlugin::test_completion()
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{
    QFETCH(QByteArray, code);
    QFETCH(QStringList, expectedCompletions);

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    TestData data;
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    data.srcText = code;
    setup(&data);

    Utils::ChangeSet change;
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    change.insert(data.pos, QLatin1String("c."));
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    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += 2;

    QStringList actualCompletions = getCompletions(data);
    actualCompletions.sort();
    expectedCompletions.sort();

    QCOMPARE(actualCompletions, expectedCompletions);
}

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void CppToolsPlugin::test_completion_template_as_base()
{
    test_completion();
}

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void CppToolsPlugin::test_completion_template_as_base_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "\n"
            "void func() {\n"
            "    Other<Data> c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
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    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Other"));
    completions.append(QLatin1String("otherMember"));
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    QTest::newRow("case: base as template directly") << code << completions;


    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "template <class T> class More : public Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
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    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Other"));
    completions.append(QLatin1String("otherMember"));
    completions.append(QLatin1String("More"));
    completions.append(QLatin1String("moreMember"));
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    QTest::newRow("case: base as class template") << code << completions;


    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "template <class T> class More : public ::Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
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    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Other"));
    completions.append(QLatin1String("otherMember"));
    completions.append(QLatin1String("More"));
    completions.append(QLatin1String("moreMember"));
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    QTest::newRow("case: base as globally qualified class template") << code << completions;


    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "}\n"
            "template <class T> class More : public NS::Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
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    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Other"));
    completions.append(QLatin1String("otherMember"));
    completions.append(QLatin1String("More"));
    completions.append(QLatin1String("moreMember"));
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    QTest::newRow("case: base as namespace qualified class template") << code << completions;


    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Delegate { typedef Data<T> Type; };\n"
            "}\n"
            "template <class T> class Final : public NS::Delegate<T>::Type { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final<Data> c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
722 723 724 725
    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Final"));
    completions.append(QLatin1String("finalMember"));
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741
    QTest::newRow("case: base as nested template name") << code << completions;


    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Delegate { typedef Data<T> Type; };\n"
            "}\n"
            "class Final : public NS::Delegate<Data>::Type { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
742 743 744 745
    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Final"));
    completions.append(QLatin1String("finalMember"));
746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
    QTest::newRow("case: base as nested template name in non-template") << code << completions;

    completions.clear();
    code = "\n"
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "}\n"
            "class Final : public NS::Other<Data> { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final c;\n"
            "    @\n"
            "    // padding so we get the scope right\n"
            "}";
761 762 763 764 765 766
    completions.append(QLatin1String("Data"));
    completions.append(QLatin1String("dataMember"));
    completions.append(QLatin1String("Final"));
    completions.append(QLatin1String("finalMember"));
    completions.append(QLatin1String("Other"));
    completions.append(QLatin1String("otherMember"));
767 768
    QTest::newRow("case: base as template name in non-template") << code << completions;
}
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797

void CppToolsPlugin::test_completion_use_global_identifier_as_base_class()
{
    test_completion();
}

void CppToolsPlugin::test_completion_use_global_identifier_as_base_class_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "\n"
            "Final c;\n"
            "@\n"
            "// padding so we get the scope right\n";

798 799 800 801
    completions.append(QLatin1String("int_global"));
    completions.append(QLatin1String("int_final"));
    completions.append(QLatin1String("Final"));
    completions.append(QLatin1String("Global"));
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823
    QTest::newRow("case: derived as global and base as global") << code << completions;

    completions.clear();

    code = "\n"
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "namespace NS\n"
            "{\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::Final c;\n"
            "@\n"
            "// padding so we get the scope right\n";

824 825 826 827
    completions.append(QLatin1String("int_global"));
    completions.append(QLatin1String("int_final"));
    completions.append(QLatin1String("Final"));
    completions.append(QLatin1String("Global"));
828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
    QTest::newRow("case: derived is inside namespace, base as global")
            << code << completions;

    completions.clear();

    //this test does not work due to the bug QTCREATORBUG-7912


//    code = "\n"
//            "struct Global\n"
//            "{\n"
//            "    int int_global;\n"
//            "};\n"
//            "\n"
//            "template <typename T>\n"
//            "struct Enclosing\n"
//            "{\n"
//            "struct Final : ::Global\n"
//            "{\n"
//            "   int int_final;\n"
//            "};\n"
//            "}\n"
//            "\n"
//            "Enclosing<int>::Final c;\n"
//            "@\n"
//            "// padding so we get the scope right\n";

855 856 857 858
//    completions.append(QLatin1String("int_global"));
//    completions.append(QLatin1String("int_final"));
//    completions.append(QLatin1String("Final"));
//    completions.append(QLatin1String("Global"));
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//    QTest::newRow("case: derived is enclosed by template, base as global")
//    << code << completions;

//    completions.clear();
}

void CppToolsPlugin::test_completion_base_class_has_name_the_same_as_derived()
{
    test_completion();
}

void CppToolsPlugin::test_completion_base_class_has_name_the_same_as_derived_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

888 889
    completions.append(QLatin1String("int_a"));
    completions.append(QLatin1String("A"));
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    QTest::newRow("case: base class is derived class") << code << completions;

    completions.clear();

    code = "\n"
            "namespace NS\n"
            "{\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

907 908
    completions.append(QLatin1String("int_a"));
    completions.append(QLatin1String("A"));
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    QTest::newRow("case: base class is derived class. class is in namespace")
            << code << completions;

    completions.clear();

    code = "\n"
            "namespace NS\n"
            "{\n"
            "struct A : NS::A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

927 928
    completions.append(QLatin1String("int_a"));
    completions.append(QLatin1String("A"));
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
    QTest::newRow("case: base class is derived class. class is in namespace. "
                  "use scope operator for base class") << code << completions;

    completions.clear();

    code = "\n"
            "namespace NS1\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_ns1_a;\n"
            "};\n"
            "}\n"
            "namespace NS2\n"
            "{\n"
            "struct A : NS1::A\n"
            "{\n"
            "   int int_ns2_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS2::A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

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    completions.append(QLatin1String("int_ns1_a"));
    completions.append(QLatin1String("int_ns2_a"));
    completions.append(QLatin1String("A"));
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    QTest::newRow("case: base class has the same name as derived but in different namespace")
            << code << completions;

    completions.clear();

    code = "\n"
            "struct Enclosing\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_enclosing_a;\n"
            "};\n"
            "};\n"
            "namespace NS2\n"
            "{\n"
            "struct A : Enclosing::A\n"
            "{\n"
            "   int int_ns2_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS2::A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

982 983 984
    completions.append(QLatin1String("int_enclosing_a"));
    completions.append(QLatin1String("int_ns2_a"));
    completions.append(QLatin1String("A"));
985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009
    QTest::newRow("case: base class has the same name as derived(in namespace) "
                  "but is nested by different class") << code << completions;

    completions.clear();

    code = "\n"
            "struct EnclosingBase\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_enclosing_base_a;\n"
            "};\n"
            "};\n"
            "struct EnclosingDerived\n"
            "{\n"
            "struct A : EnclosingBase::A\n"
            "{\n"
            "   int int_enclosing_derived_a;\n"
            "};\n"
            "};\n"
            "\n"
            "EnclosingDerived::A c;\n"
            "@\n"
            "// padding so we get the scope right\n";

1010 1011 1012
    completions.append(QLatin1String("int_enclosing_base_a"));
    completions.append(QLatin1String("int_enclosing_derived_a"));
    completions.append(QLatin1String("A"));
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
    QTest::newRow("case: base class has the same name as derived(nested) "
                  "but is nested by different class") << code << completions;

    completions.clear();

    code = "\n"
            "template <typename T>\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A<int> c;\n"
            "@\n"
            "// padding so we get the scope right\n";

1029 1030
    completions.append(QLatin1String("int_a"));
    completions.append(QLatin1String("A"));
1031 1032 1033 1034 1035 1036
    QTest::newRow("case: base class is derived class. class is a template")
            << code << completions;

    completions.clear();

}
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void CppToolsPlugin::test_completion_cyclic_inheritance()
{
    test_completion();
}

void CppToolsPlugin::test_completion_cyclic_inheritance_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct B : A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
            ;
1059 1060 1061 1062
    completions.append(QLatin1String("A"));
    completions.append(QLatin1String("_a"));
    completions.append(QLatin1String("B"));
    completions.append(QLatin1String("_b"));
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    QTest::newRow("case: direct cyclic inheritance") << code << completions;

    completions.clear();
    code = "\n"
            "struct C;\n"
            "struct A : C { int _a; };\n"
            "struct B : A { int _b; };\n"
            "struct C : B { int _c; };\n"
            "\n"
            "A c;\n"
            "@\n"
            ;
1075 1076 1077 1078 1079 1080
    completions.append(QLatin1String("A"));
    completions.append(QLatin1String("_a"));
    completions.append(QLatin1String("B"));
    completions.append(QLatin1String("_b"));
    completions.append(QLatin1String("C"));
    completions.append(QLatin1String("_c"));
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092
    QTest::newRow("case: indirect cyclic inheritance") << code << completions;

    completions.clear();
    code = "\n"
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct C { int _c; };\n"
            "struct B : C, A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
            ;
1093 1094 1095 1096 1097 1098
    completions.append(QLatin1String("A"));
    completions.append(QLatin1String("_a"));
    completions.append(QLatin1String("B"));
    completions.append(QLatin1String("_b"));
    completions.append(QLatin1String("C"));
    completions.append(QLatin1String("_c"));
1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
    QTest::newRow("case: indirect cyclic inheritance") << code << completions;

    completions.clear();
    code = "\n"
            "template< typename T > struct C;\n"
            "template< typename T, typename S > struct D : C< S >\n"
            "{\n"
            "   T _d_t;\n"
            "   S _d_s;\n"
            "};\n"
            "template< typename T > struct C : D< T, int >\n"
            "{\n"
            "   T _c_t;\n"
            "};\n"
            "\n"
            "D<int, float> c;\n"
            "@\n"
            ;
1117 1118 1119 1120 1121
    completions.append(QLatin1String("D"));
    completions.append(QLatin1String("_d_t"));
    completions.append(QLatin1String("_d_s"));
    completions.append(QLatin1String("C"));
    completions.append(QLatin1String("_c_t"));
1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
    QTest::newRow("case: direct cyclic inheritance with templates")
            << code << completions;

    completions.clear();
    code = "\n"
            "template< typename T > struct C;\n"
            "template< typename T, typename S > struct D : C< S >\n"
            "{\n"
            "   T _d_t;\n"
            "   S _d_s;\n"
            "};\n"
            "template< typename T > struct B : D< T, int >\n"
            "{\n"
            "   T _b_t;\n"
            "};\n"
            "template< typename T > struct C : B<T>\n"
            "{\n"
            "   T _c_t;\n"
            "};\n"
            "\n"
            "D<int, float> c;\n"
            "@\n"
            ;
1145 1146 1147 1148 1149 1150 1151
    completions.append(QLatin1String("D"));
    completions.append(QLatin1String("_d_t"));
    completions.append(QLatin1String("_d_s"));
    completions.append(QLatin1String("C"));
    completions.append(QLatin1String("_c_t"));
    completions.append(QLatin1String("B"));
    completions.append(QLatin1String("_b_t"));
1152 1153 1154
    QTest::newRow("case: indirect cyclic inheritance with templates")
            << code << completions;

1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
    completions.clear();
    code = "\n"
           "namespace NS\n"
           "{\n"
           "template <typename T> struct SuperClass\n"
           "{\n"
           "    typedef T Type;\n"
           "    Type super_class_type;\n"
           "};\n"
           "}\n"
           "\n"
           "template <typename T>\n"
           "struct Class;\n"
           "\n"
           "template <typename T, typename S>\n"
           "struct ClassRecurse : Class<S>\n"
           "{\n"
           "    T class_recurse_t;\n"
           "    S class_recurse_s;\n"
           "};\n"
           "\n"
           "template <typename T>\n"
           "struct Class : ClassRecurse< T, typename ::NS::SuperClass<T>::Type >\n"
           "{\n"
           "    T class_t;\n"
           "};\n"
           "\n"
           "Class<int> c;\n"
           "@\n"
            ;
1185 1186 1187 1188 1189
    completions.append(QLatin1String("Class"));
    completions.append(QLatin1String("ClassRecurse"));
    completions.append(QLatin1String("class_t"));
    completions.append(QLatin1String("class_recurse_s"));
    completions.append(QLatin1String("class_recurse_t"));
1190 1191
    QTest::newRow("case: direct cyclic inheritance with templates, more complex situation")
            << code << completions;
1192
}
1193

1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251
void CppToolsPlugin::test_completion_template_function()
{
    QFETCH(QByteArray, code);
    QFETCH(QStringList, expectedCompletions);

    TestData data;
    data.srcText = code;
    setup(&data);

    QStringList actualCompletions = getCompletions(data);
    actualCompletions.sort();
    expectedCompletions.sort();

    QString errorPattern(QLatin1String("Completion not found: %1"));
    foreach (const QString &completion, expectedCompletions) {
        QByteArray errorMessage = errorPattern.arg(completion).toUtf8();
        QVERIFY2(actualCompletions.contains(completion), errorMessage.data());
    }
}

void CppToolsPlugin::test_completion_template_function_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
           "template <class tclass, typename tname, int tint>\n"
           "tname Hello(const tclass &e)\n"
           "{\n"
           "    tname e2 = e;\n"
           "    @\n"
           "}";

    completions.append(QLatin1String("tclass"));
    completions.append(QLatin1String("tname"));
    completions.append(QLatin1String("tint"));
    QTest::newRow("case: template parameters in template function body")
            << code << completions;

    completions.clear();

    code = "\n"
           "template <class tclass, typename tname, int tint>\n"
           "tname Hello(const tclass &e, @)\n"
           "{\n"
           "    tname e2 = e;\n"
           "}";

    completions.append(QLatin1String("tclass"));
    completions.append(QLatin1String("tname"));
    completions.append(QLatin1String("tint"));
    QTest::newRow("case: template parameters in template function parameters list")
            << code << completions;
}

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void CppToolsPlugin::test_completion_enclosing_template_class()
{
    test_completion();
}

void CppToolsPlugin::test_completion_enclosing_template_class_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code = "\n"
            "template<typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested { int int_nested; }; \n"
            "    int int_enclosing;\n"
            "};\n"
            "\n"
            "Enclosing<int>::Nested c;"
            "@\n";
1275 1276
    completions.append(QLatin1String("Nested"));
    completions.append(QLatin1String("int_nested"));
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291
    QTest::newRow("case: nested class with enclosing template class")
            << code << completions;

    completions.clear();

    code = "\n"
            "template<typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    template<typename T> struct Nested { int int_nested; }; \n"
            "    int int_enclosing;\n"
            "};\n"
            "\n"
            "Enclosing<int>::Nested<int> c;"
            "@\n";
1292 1293
    completions.append(QLatin1String("Nested"));
    completions.append(QLatin1String("int_nested"));
1294
    QTest::newRow("case: nested template class with enclosing template class")
1295 1296
            << code << completions;
}
1297 1298 1299

void CppToolsPlugin::test_completion_instantiate_nested_class_when_enclosing_is_template()
{
1300
    TestData data;
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339
    data.srcText = "\n"
            "struct Foo \n"
            "{\n"
            "    int foo_i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested\n"
            "    {\n"
            "        T nested_t;\n"
            "    } nested;\n"
            "\n"
            "    T enclosing_t;\n"
            "};\n"
            "\n"
            "Enclosing<Foo> enclosing;\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("enclosing.nested.nested_t.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Foo")));
    QVERIFY(completions.contains(QLatin1String("foo_i")));
}

void CppToolsPlugin::test_completion_instantiate_nested_of_nested_class_when_enclosing_is_template()
{
1340
    TestData data;
1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
    data.srcText = "\n"
            "struct Foo \n"
            "{\n"
            "    int foo_i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested\n"
            "    {\n"
            "        T nested_t;\n"
            "        struct NestedNested\n"
            "        {\n"
            "            T nestedNested_t;\n"
            "        } nestedNested;\n"
            "    } nested;\n"
            "\n"
            "    T enclosing_t;\n"
            "};\n"
            "\n"
            "Enclosing<Foo> enclosing;\n"
            "@\n"
            ;

    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("enclosing.nested.nestedNested.nestedNested_t.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Foo")));
    QVERIFY(completions.contains(QLatin1String("foo_i")));
}
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void CppToolsPlugin::test_completion_instantiate_template_with_default_argument_type()
{
    TestData data;
    data.srcText = "\n"
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "};\n"
            "\n"
            "template <typename T = Foo>\n"
            "struct Template\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "\n"
            "Template<> templateWithDefaultTypeOfArgument;\n"
            "@\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("templateWithDefaultTypeOfArgument.t.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Foo")));
    QVERIFY(completions.contains(QLatin1String("bar")));
}

void CppToolsPlugin::test_completion_instantiate_template_with_default_argument_type_as_template()
{
    TestData data;
    data.srcText = "\n"
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct TemplateArg\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "template <typename T, typename S = TemplateArg<T> >\n"
            "struct Template\n"
            "{\n"
            "    S s;\n"
            "};\n"
            "\n"
            "Template<Foo> templateWithDefaultTypeOfArgument;\n"
            "@\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("templateWithDefaultTypeOfArgument.s.t.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    QStringList completions = getCompletions(data);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("Foo")));
    QVERIFY(completions.contains(QLatin1String("bar")));
}

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void CppToolsPlugin::test_completion_member_access_operator_1()
{
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    TestData data;
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    data.srcText = "\n"
            "struct S { void t(); };\n"
            "void f() { S *s;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("s.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("t")));
    QVERIFY(replaceAccessOperator);
}
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void CppToolsPlugin::test_completion_typedef_of_type_and_decl_of_type_no_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "struct S { int m; };\n"
            "typedef S SType;\n"
            "SType p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
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    QVERIFY(!replaceAccessOperator);
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}

void CppToolsPlugin::test_completion_typedef_of_pointer_and_decl_of_pointer_no_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "struct S { int m; };\n"
            "typedef S *SType;\n"
            "SType *p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 0);
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    QVERIFY(!replaceAccessOperator);
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}

void CppToolsPlugin::test_completion_typedef_of_type_and_decl_of_pointer_replace_access_operator()
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{
    TestData data;
    data.srcText = "\n"
            "struct S { int m; };\n"
            "typedef S SType;\n"
            "SType *p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
    QVERIFY(replaceAccessOperator);
}

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void CppToolsPlugin::test_completion_typedef_of_pointer_and_decl_of_type_replace_access_operator()
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{
    TestData data;
    data.srcText = "\n"
            "struct S { int m; };\n"
            "typedef S* SPtr;\n"
            "SPtr p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
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    QVERIFY(replaceAccessOperator);
}

void CppToolsPlugin::test_completion_predecl_typedef_of_type_and_decl_of_pointer_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "typedef struct S SType;\n"
            "struct S { int m; };\n"
            "SType *p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
    QVERIFY(replaceAccessOperator);
}

void CppToolsPlugin::test_completion_predecl_typedef_of_type_and_decl_type_no_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "typedef struct S SType;\n"
            "struct S { int m; };\n"
            "SType p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
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    QVERIFY(!replaceAccessOperator);
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}

void CppToolsPlugin::test_completion_predecl_typedef_of_pointer_and_decl_of_pointer_no_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "typedef struct S *SType;\n"
            "struct S { int m; };\n"
            "SType *p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 0);
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    QVERIFY(!replaceAccessOperator);
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}

void CppToolsPlugin::test_completion_predecl_typedef_of_pointer_and_decl_of_type_replace_access_operator()
{
    TestData data;
    data.srcText = "\n"
            "typedef struct S *SType;\n"
            "struct S { int m; };\n"
            "SType p;\n"
            "@\n"
            "}\n"
            ;
    setup(&data);

    Utils::ChangeSet change;
    QString txt = QLatin1String("p.");
    change.insert(data.pos, txt);
    QTextCursor cursor(data.doc);
    change.apply(&cursor);
    data.pos += txt.length();

    bool replaceAccessOperator = false;
    QStringList completions = getCompletions(data, &replaceAccessOperator);

    QCOMPARE(completions.size(), 2);
    QVERIFY(completions.contains(QLatin1String("S")));
    QVERIFY(completions.contains(QLatin1String("m")));
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    QVERIFY(replaceAccessOperator);
}
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void CppToolsPlugin::test_completion_typedef_of_pointer()
{
    TestData data;
    data.srcText = "\n"
            "struct Foo { int bar; };\n"
            "typedef Foo *FooPtr;\n"
            "void main()