cppcompletion_test.cpp

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#include "cppcompletionassist.h"
#include "cppmodelmanager.h"
#include "cpptoolsplugin.h"
#include "cpptoolstestcase.h"

#include <texteditor/codeassist/iassistproposal.h>
#include <texteditor/convenience.h>
#include <texteditor/texteditor.h>
#include <texteditor/textdocument.h>
#include <coreplugin/editormanager/editormanager.h>

#include <utils/changeset.h>
#include <utils/fileutils.h>

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

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

namespace {

typedef QByteArray _;

class CompletionTestCase : public Tests::TestCase
{
public:
    CompletionTestCase(const QByteArray &sourceText, const QByteArray &textToInsert = QByteArray())
        : m_position(-1), m_editorWidget(0), m_textDocument(0), m_editor(0)
    {
        QVERIFY(succeededSoFar());
        m_succeededSoFar = false;

        m_source = sourceText;
        m_position = m_source.indexOf('@');
        QVERIFY(m_position != -1);
        m_source[m_position] = ' ';

        // Write source to file
        m_temporaryDir.reset(new Tests::TemporaryDir());
        QVERIFY(m_temporaryDir->isValid());
        const QString fileName = m_temporaryDir->createFile("file.h", m_source);
        QVERIFY(!fileName.isEmpty());

        // Open in editor
        m_editor = EditorManager::openEditor(fileName);
        QVERIFY(m_editor);
        closeEditorAtEndOfTestCase(m_editor);
        m_editorWidget = qobject_cast<TextEditorWidget *>(m_editor->widget());
        QVERIFY(m_editorWidget);

        m_textDocument = m_editorWidget->document();

        // Get Document
        const Document::Ptr document = waitForFileInGlobalSnapshot(fileName);
        QVERIFY(document);
        QVERIFY(document->diagnosticMessages().isEmpty());

        m_snapshot.insert(document);

        if (!textToInsert.isEmpty())
            insertText(textToInsert);

        m_succeededSoFar = true;
    }

    QStringList getCompletions(bool *replaceAccessOperator = 0) const
    {
        QStringList completions;
        LanguageFeatures languageFeatures = LanguageFeatures::defaultFeatures();
        languageFeatures.objCEnabled = false;
        CppCompletionAssistInterface *ai
            = new CppCompletionAssistInterface(m_editorWidget->textDocument()->filePath().toString(),
                                               m_editorWidget->document(), m_position,
                                               ExplicitlyInvoked, m_snapshot,
                                               ProjectPart::HeaderPaths(),
                                               languageFeatures);
        InternalCppCompletionAssistProcessor processor;

        const Tests::IAssistProposalScopedPointer proposal(processor.perform(ai));
        if (!proposal.d)
            return completions;
        IAssistProposalModel *model = proposal.d->model();
        if (!model)
            return completions;
        CppAssistProposalModel *listmodel = dynamic_cast<CppAssistProposalModel *>(model);
        if (!listmodel)
            return completions;

        const int pos = proposal.d->basePosition();
        const int length = m_position - pos;
        const QString prefix = Convenience::textAt(QTextCursor(m_editorWidget->document()), pos,
                                                   length);
        if (!prefix.isEmpty())
            listmodel->filter(prefix);
        if (listmodel->isSortable(prefix))
            listmodel->sort(prefix);

        for (int i = 0; i < listmodel->size(); ++i)
            completions << listmodel->text(i);

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

        return completions;
    }

    void insertText(const QByteArray &text)
    {
        Utils::ChangeSet change;
        change.insert(m_position, QLatin1String(text));
        QTextCursor cursor(m_textDocument);
        change.apply(&cursor);
        m_position += text.length();
    }

private:
    QByteArray m_source;
    int m_position;
    Snapshot m_snapshot;
    QScopedPointer<Tests::TemporaryDir> m_temporaryDir;
    TextEditorWidget *m_editorWidget;
    QTextDocument *m_textDocument;
    IEditor *m_editor;
};

bool isProbablyGlobalCompletion(const QStringList &list)
{
    const int numberOfPrimitivesAndBasicKeywords = (T_LAST_PRIMITIVE - T_FIRST_PRIMITIVE)
            + (T_FIRST_OBJC_AT_KEYWORD - T_FIRST_KEYWORD);

    return list.size() >= numberOfPrimitivesAndBasicKeywords
        && list.contains(QLatin1String("override"))
        && list.contains(QLatin1String("final"))
        && list.contains(QLatin1String("if"))
        && list.contains(QLatin1String("bool"));
}

} // anonymous namespace

void CppToolsPlugin::test_completion_basic_1()
{
    const QByteArray source =
            "class Foo\n"
            "{\n"
            "    void foo();\n"
            "    int m;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Foo f;\n"
            "    @\n"
            "}";
    CompletionTestCase test(source);
    QVERIFY(test.succeededSoFar());

    QStringList basicCompletions = test.getCompletions();
    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")));

    test.insertText("f.");

    QStringList memberCompletions = test.getCompletions();
    QVERIFY(memberCompletions.contains(QLatin1String("foo")));
    QVERIFY(memberCompletions.contains(QLatin1String("m")));
    QVERIFY(!memberCompletions.contains(QLatin1String("func")));
    QVERIFY(!memberCompletions.contains(QLatin1String("f")));
}

void CppToolsPlugin::test_completion_prefix_first_QTCREATORBUG_8737()
{
    const QByteArray source =
            "void f()\n"
            "{\n"
            "    int a_b_c, a_c, a_c_a;\n"
            "    @;\n"
            "}\n"
            ;
    CompletionTestCase test(source, "a_c");
    QVERIFY(test.succeededSoFar());

    QStringList completions = test.getCompletions();

    QVERIFY(completions.size() >= 2);
    QCOMPARE(completions.at(0), QLatin1String("a_c"));
    QCOMPARE(completions.at(1), QLatin1String("a_c_a"));
    QVERIFY(completions.contains(QLatin1String("a_b_c")));
}

void CppToolsPlugin::test_completion_prefix_first_QTCREATORBUG_9236()
{
    const QByteArray source =
            "class r_etclass\n"
            "{\n"
            "public:\n"
            "    int raEmTmber;\n"
            "    void r_e_t(int re_t)\n"
            "    {\n"
            "        int r_et;\n"
            "        int rETUCASE;\n"
            "        @\n"
            "    }\n"
            "};\n"
            ;
    CompletionTestCase test(source, "ret");
    QVERIFY(test.succeededSoFar());

    QStringList completions = test.getCompletions();
    QVERIFY(completions.size() >= 2);
    QCOMPARE(completions.at(0), QLatin1String("return"));
    QCOMPARE(completions.at(1), QLatin1String("rETUCASE"));
    QVERIFY(completions.contains(QLatin1String("r_etclass")));
    QVERIFY(completions.contains(QLatin1String("raEmTmber")));
    QVERIFY(completions.contains(QLatin1String("r_e_t")));
    QVERIFY(completions.contains(QLatin1String("re_t")));
    QVERIFY(completions.contains(QLatin1String("r_et")));
}

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

    CompletionTestCase test(code);
    QVERIFY(test.succeededSoFar());

    QStringList actualCompletions = test.getCompletions();
    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 =
           "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 =
           "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;
}

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

    CompletionTestCase test(code, prefix);
    QVERIFY(test.succeededSoFar());

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

    QEXPECT_FAIL("template_as_base: typedef not available in derived",
                 "We can live with that...", Abort);
    QEXPECT_FAIL("template_specialization_with_reference", "test of reverted change", Abort);
    QEXPECT_FAIL("specialization_multiple_arguments", "test of reverted change", Abort);
    QEXPECT_FAIL("specialization_with_default_value", "test of reverted change", Abort);
    QEXPECT_FAIL("partial_specialization_with_pointer", "test of reverted change", Abort);
    QEXPECT_FAIL("enum_in_function_in_struct_in_function", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_function_in_struct_in_function_cxx11", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_function_in_struct_in_function_anon", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_class_accessed_in_member_func_cxx11", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_class_accessed_in_member_func_inline_cxx11", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("recursive_instantiation_of_template_type", "QTCREATORBUG-14237", Abort);
    QCOMPARE(actualCompletions, expectedCompletions);
}

void CppToolsPlugin::test_global_completion_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QByteArray>("prefix");
    QTest::addColumn<QStringList>("requiredCompletionItems");

    // Check that special completion after '&' for Qt5 signal/slots does not
    // interfere global completion after '&'
    QTest::newRow("global completion after & in return expression")
         << _("void f() { foo(myObject, @); }\n")
         << _("&")
         << QStringList();
    QTest::newRow("global completion after & in function argument")
         << _("int f() { return @; }\n")
         << _("&")
         << QStringList();

    // Check global completion after one line comments
    const QByteArray codeTemplate = "int myGlobal;\n"
                                    "<REPLACEMENT>\n"
                                    "@\n";
    const QStringList replacements = QStringList()
            << QLatin1String("// text")
            << QLatin1String("// text.")
            << QLatin1String("/// text")
            << QLatin1String("/// text.")
               ;
    foreach (const QString &replacement, replacements) {
        QByteArray code = codeTemplate;
        code.replace("<REPLACEMENT>", replacement.toUtf8());
        const QByteArray tag = _("completion after comment: ") + replacement.toUtf8();
        QTest::newRow(tag) << code << QByteArray() << QStringList(QLatin1String("myGlobal"));
    }
}

void CppToolsPlugin::test_global_completion()
{
    QFETCH(QByteArray, code);
    QFETCH(QByteArray, prefix);
    QFETCH(QStringList, requiredCompletionItems);

    CompletionTestCase test(code, prefix);
    QVERIFY(test.succeededSoFar());
    const QStringList completions = test.getCompletions();
    QVERIFY(isProbablyGlobalCompletion(completions));
    QVERIFY(completions.toSet().contains(requiredCompletionItems.toSet()));
}

static void enumTestCase(const QByteArray &tag, const QByteArray &source,
                         const QByteArray &prefix = QByteArray())
{
    QByteArray fullSource = source;
    fullSource.replace('$', "enum E { val1, val2, val3 };");
    QTest::newRow(tag) << fullSource << (prefix + "val")
            << (QStringList()
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));

    QTest::newRow(tag + "_cxx11") << fullSource << (prefix + "E::")
            << (QStringList()
                << QLatin1String("E")
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));

    fullSource.replace("enum E ", "enum ");
    QTest::newRow(tag + "_anon") << fullSource << (prefix + "val")
            << (QStringList()
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));
}

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

    QTest::newRow("forward_declarations_present") << _(
            "class Foo\n"
            "{\n"
            "    struct Bar;\n"
            "    int i;\n"
            "};\n"
            "\n"
            "struct Foo::Bar \n"
            "{\n"
            "    Bar() {}\n"
            "};\n"
            "\n"
            "@\n"
        ) << _("Foo::Bar::") << (QStringList()
            << QLatin1String("Bar"));

    QTest::newRow("inside_parentheses_c_style_conversion") << _(
            "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"
        ) << _("((Derived *)b)->") << (QStringList()
            << QLatin1String("Derived")
            << QLatin1String("Base")
            << QLatin1String("i_derived")
            << QLatin1String("i_base"));

    QTest::newRow("inside_parentheses_cast_operator_conversion") << _(
            "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"
        ) << _("(static_cast<Derived *>(b))->") << (QStringList()
            << QLatin1String("Derived")
            << QLatin1String("Base")
            << QLatin1String("i_derived")
            << QLatin1String("i_base"));

    QTest::newRow("template_1") << _(
            "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"
            "}"
        ) << _("Foo::") << (QStringList()
              << QLatin1String("Foo")
              << QLatin1String("Type")
              << QLatin1String("foo")
              << QLatin1String("m"));

    QTest::newRow("template_2") << _(
            "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"
            "}"
        ) << _("l.at(0).") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));

    QTest::newRow("template_3") << _(
            "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"
            "}"
        ) << _("l.t.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));

    QTest::newRow("template_4") << _(
            "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"
            "}"
        ) << _("l.u.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));

    QTest::newRow("template_5") << _(
            "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"
            "}"
        ) << _("l.u.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));

    QTest::newRow("template_6") << _(
            "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"
        ) << _("container.get().") << (QStringList()
            << QLatin1String("Item")
            << QLatin1String("i"));

    QTest::newRow("template_7") << _(
            "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"
        ) << _("p->") << (QStringList()
            << QLatin1String("Test")
            << QLatin1String("i"));

    QTest::newRow("type_of_pointer_is_typedef") << _(
            "typedef struct Foo\n"
            "{\n"
            "    int foo;\n"
            "} Foo;\n"
            "Foo *bar;\n"
            "@\n"
        ) << _("bar->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo"));

    QTest::newRow("instantiate_full_specialization") << _(
            "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"
        ) << _("templateChar.") << (QStringList()
            << QLatin1String("Template")
            << QLatin1String("templateChar_i"));

    QTest::newRow("template_as_base: base as template directly") << _(
            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "\n"
            "void func() {\n"
            "    Other<Data> c;\n"
            "    @\n"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));

    QTest::newRow("template_as_base: base as class template") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as globally qualified class template") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as namespace qualified class template") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as nested template name") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));

    QTest::newRow("template_as_base: base as nested template name in non-template") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));

    QTest::newRow("template_as_base: base as template name in non-template") << _(
            "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"
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));

    QTest::newRow("template_as_base: typedef not available in derived") << _(
            "class Data { int dataMember; };\n"
            "template <class T> struct Base { typedef T F; };\n"
            "template <class T> struct Derived : Base<T> { F f; };\n"
            "\n"
            "void func() {\n"
            "    Derived<Data> d;\n"
            "    @\n"
            "}\n"
        ) << _("d.f.") << QStringList();

    QTest::newRow("template_as_base: explicit typedef from base") << _(
            "class Data { int dataMember; };\n"
            "template <class T> struct Base { typedef T F; };\n"
            "template <class T> struct Derived : Base<T>\n"
            "{\n"
            "   typedef typename Base<T>::F F;\n"
            "   F f;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Derived<Data> d;\n"
            "    @\n"
            "}\n"
        ) << _("d.f.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember"));

    QTest::newRow("explicit_instantiation") << _(
            "template<class T>\n"
            "struct Foo { T bar; };\n"
            "\n"
            "template class Foo<int>;\n"
            "\n"
            "void func()\n"
            "{\n"
            "    Foo<int> foo;\n"
            "    @\n"
            "}\n"
        ) << _("foo.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("use_global_identifier_as_base_class: derived as global and base as global") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));

    QTest::newRow("use_global_identifier_as_base_class: derived is inside namespace. "
                  "base as global") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));

    QTest::newRow("use_global_identifier_as_base_class: derived is enclosed by template. "
                  "base as global") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class") << _(
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is in namespace") << _(
            "namespace NS\n"
            "{\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is in namespace. use scope operator for base class") << _(
            "namespace NS\n"
            "{\n"
            "struct A : NS::A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived but in different namespace") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_ns1_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived (in namespace) but is nested by different class") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived (nested) but is nested by different class") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_base_a")
            << QLatin1String("int_enclosing_derived_a")
            << QLatin1String("A"));

    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is a template") << _(
            "template <typename T>\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A<int> c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));

    QTest::newRow("cyclic_inheritance: direct cyclic inheritance") << _(
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct B : A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance with templates") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t")
            << QLatin1String("B")
            << QLatin1String("_b_t"));

    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates. "
                  "more complex situation") << _(
           "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("Class")
            << QLatin1String("ClassRecurse")
            << QLatin1String("class_t")
            << QLatin1String("class_recurse_s")
            << QLatin1String("class_recurse_t"));

    QTest::newRow("enclosing_template_class: nested class with enclosing template class") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));

    QTest::newRow("enclosing_template_class: nested template class with enclosing template "
                  "class") << _(
            "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"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));

    QTest::newRow("instantiate_nested_class_when_enclosing_is_template") << _(
            "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"
        ) << _("enclosing.nested.nested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));

    QTest::newRow("instantiate_nested_of_nested_class_when_enclosing_is_template") << _(
            "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"
        ) << _("enclosing.nested.nestedNested.nestedNested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));

    QTest::newRow("instantiate_template_with_default_argument_type") << _(
            "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"
        ) << _("templateWithDefaultTypeOfArgument.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("instantiate_template_with_default_argument_type_as_template") << _(
            "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"
        ) << _("templateWithDefaultTypeOfArgument.s.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("typedef_of_pointer") << _(
            "struct Foo { int bar; };\n"
            "typedef Foo *FooPtr;\n"
            "void main()\n"
            "{\n"
            "   FooPtr ptr;\n"
            "   @\n"
            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("typedef_of_pointer_inside_function") << _(
            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   FooPtr ptr;\n"
            "   @\n"
            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("typedef_is_inside_function_before_declaration_block") << _(
            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   if (true) {\n"
            "       FooPtr ptr;\n"
            "       @\n"
            "   }"
            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));

    QTest::newRow("resolve_complex_typedef_with_template") << _(
            "template <typename T>\n"
            "struct Template2\n"
            "{\n"
            "    typedef typename T::template Template1<T>::TT TemplateTypedef;\n"
            "    TemplateTypedef templateTypedef;\n"
            "};\n"
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "    template <typename T>\n"
            "    struct Template1\n"
            "    {\n"
            "        typedef T TT;\n"
            "    };\n"
            "};\n"
            "void fun()\n"
            "{\n"
            "    Template2<Foo> template2;\n"
            "    @\n"
            "}\n"
        ) << _("template2.templateTypedef.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar")
            << QLatin1String("Template1"));