/*
   This file is part of KDevelop
   Copyright 2009 Ramon Zarazua <killerfox512+kde@gmail.com>
   Copyright 2009 David Nolden <david.nolden.kdevelop@art-master.de>
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "test_cppcodegen.h"

#include "parsesession.h"
#include "ast.h"
#include "astutilities.h"

#include <interfaces/ilanguagecontroller.h>

#include <QtTest/QTest>
#include <shell/shellextension.h>
#include <tests/autotestshell.h>
#include <tests/testcore.h>
#include <tests/testfile.h>
#include <qtest_kde.h>
#include <language/codecompletion/codecompletiontesthelper.h>
#include <dumpchain.h>
#include <templatedeclaration.h>
#include <language/backgroundparser/backgroundparser.h>
#include <language/codegen/coderepresentation.h>
#include <language/duchain/duchain.h>
#include <language/duchain/duchainlock.h>
#include <language/duchain/duchainutils.h>
#include <language/duchain/dumpchain.h>
#include <language/duchain/parsingenvironment.h>
#include <language/duchain/codemodel.h>
#include <language/duchain/classdeclaration.h>
#include <language/duchain/types/structuretype.h>
#include <interfaces/iassistant.h>
#include <interfaces/foregroundlock.h>
#include <interfaces/isourceformattercontroller.h>

#include "codegen/simplerefactoring.h"

QTEST_KDEMAIN(TestCppCodegen, NoGUI )

using namespace KDevelop;

ForegroundLock* globalTestLock = 0;

void TestCppCodegen::initTestCase()
{
  //Initialize KDevelop components
  AutoTestShell::init(QStringList() << "kdevcppsupport");
  TestCore::initialize(Core::NoUi);

  Core::self()->languageController()->backgroundParser()->setDelay(1);
  DUChain::self()->disablePersistentStorage();
  Core::self()->sourceFormatterController()->disableSourceFormatting(true);
  CodeRepresentation::setDiskChangesForbidden(true);
  
  globalTestLock = new ForegroundLock;
}

void TestCppCodegen::cleanupTestCase()
{
  TestCore::shutdown();
  delete globalTestLock;
  globalTestLock = 0;
}

void dumpAST(InsertIntoDUChain& code)
{
    DUChainReadLocker lock;
    
    Q_ASSERT(!code->parsingEnvironmentFile()->isProxyContext());
    
    ParseSession::Ptr session = ParseSession::Ptr::dynamicCast<IAstContainer>(code->ast());
    Q_ASSERT(session);
    Cpp::DumpChain dump;
    dump.dump(session->topAstNode(), session.data());
}

void dumpDUChain(InsertIntoDUChain& code)
{
    DUChainReadLocker lock;
    
    KDevelop::dumpDUContext(code.topContext());
}


void TestCppCodegen::testAssistants()
{
  QFETCH(QString, contents);
  QFETCH(int, numAssistants);
  QFETCH(int, executeAssistant);
  QFETCH(QString, insertionText);
  InsertIntoDUChain code("test_assistants.cpp", contents);
  code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);

  DUChainReadLocker lock;

  QCOMPARE(code->problems().size(), 1);
  QVERIFY(code->problems().first()->solutionAssistant());
  QCOMPARE(code->problems().first()->solutionAssistant()->actions().size(), numAssistants);
  code->problems().first()->solutionAssistant()->actions()[executeAssistant]->execute();

  //Make sure the assistant has inserted the correct solution
  QVERIFY(code.m_insertedCode.text().contains(insertionText));
}

void TestCppCodegen::testAssistants_data()
{
  QTest::addColumn<QString>("contents");
  QTest::addColumn<int>("numAssistants");
  QTest::addColumn<int>("executeAssistant");
  QTest::addColumn<QString>("insertionText");

  /// NOTE: THIS CODE MUST _NOT_ DEPEND ON A SPECIFIC FORMATTER CONFIGURATION!

  QTest::newRow("local") <<
    "enum Honk { Hank };\n"
    "void test() {\n"
    " val = Hank;\n"
    " }\n"
    << 1 << 0 << "Honk val = Hank;";

  QString inClass = "enum Honk { Hank };\n"
    "class myClass {\n"
    "public:\n"
    "  void test() {\n"
    "   val = Hank;\n"
    "  }\n"
    "};\n";
  QTest::newRow("local_class") << inClass << 4 << 0 << "Honk val = Hank;";
  QTest::newRow("private_class") << inClass << 4 << 1 << "private:\n  Honk val;";
  QTest::newRow("protected_class") << inClass << 4 << 2 << "protected:\n  Honk val;";
  QTest::newRow("public_class") << inClass << 4 << 3 << "}\n  Honk val;";

  QString inOtherClass =
    "class other {\n"
    "};\n"
    "class myClass : public other {\n"
    "public:\n"
    "  void test() {\n"
    "   other* o;\n"
    "   o->foo(1, 0.5);\n"
    "  }\n"
    "};\n";
  QTest::newRow("public_other") << inOtherClass << 2 << 1
    << "class other {\npublic:\nvoid foo(int arg1, double arg2);";
  QTest::newRow("protected_other") << inOtherClass << 2 << 0
    << "class other {\nprotected:\nvoid foo(int arg1, double arg2);";
}

void TestCppCodegen::testUpdateIndices()
{
  /// @todo Extend this test to make sure t hat all kinds of declarations retain their indices when they are updated
  {
    InsertIntoDUChain code1("duchaintest_1.h", "class QW{}; struct A { struct Member2; struct Member1; }; class Oq{};");
    InsertIntoDUChain code3("duchaintest_3.h", "#include <duchaintest_1.h>\n struct C : public A { Member1 m1; Member2 m2; A test(int arg) { int v1; \n{}\n { int v2, *v3; }} int test(); };");
    kWarning() << "********************* Parsing step 1";
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
    
    DUChainReadLocker lock;

    IndexedDeclaration CDecl = code3.getDeclaration("C");
    QVERIFY(CDecl.isValid());
    IndexedDeclaration ADecl = code3.getDeclaration("A");
    QVERIFY(ADecl.isValid());

    IndexedDeclaration C_m1 = code3.getDeclaration("C::m1");
    QVERIFY(C_m1.isValid());
    IndexedDeclaration C_m2 = code3.getDeclaration("C::m2");
    QVERIFY(C_m2.isValid());
    
    QVERIFY(CDecl.declaration()->internalContext());
    QCOMPARE(CDecl.declaration()->internalContext()->localDeclarations().size(), 4);
    
    IndexedDeclaration C_test = CDecl.declaration()->internalContext()->localDeclarations()[2];
    QVERIFY(C_test.isValid());
    DUContext* testCtx = C_test.data()->internalContext();
    QVERIFY(testCtx);
    QCOMPARE(testCtx->localDeclarations().size(), 1);
    
    IndexedDeclaration C_test_v1 = testCtx->localDeclarations()[0];
    
    QCOMPARE(testCtx->childContexts().size(), 2);
    DUContext* child = testCtx->childContexts()[1];
    
    QCOMPARE(child->localDeclarations().size(), 2);
    
    IndexedDeclaration C_test_v2 = child->localDeclarations()[0];
    IndexedDeclaration C_test_v3 = child->localDeclarations()[1];
    
    QCOMPARE(C_test_v1.declaration()->identifier(), Identifier("v1"));
    QCOMPARE(C_test_v2.declaration()->identifier(), Identifier("v2"));
    QCOMPARE(C_test_v3.declaration()->identifier(), Identifier("v3"));
    QCOMPARE(C_m1.declaration()->identifier(), Identifier("m1"));
    QCOMPARE(C_m2.declaration()->identifier(), Identifier("m2"));
    QCOMPARE(C_test.declaration()->identifier(), Identifier("test"));
    QCOMPARE(CDecl.declaration()->identifier(), Identifier("C"));
    QCOMPARE(ADecl.declaration()->identifier(), Identifier("A"));
    
    lock.unlock();
    code1.m_insertedCode.setText("struct A { struct Member2; struct Member1; };");
    code3.m_insertedCode.setText("#include <duchaintest_1.h>\n class Q{}; struct C : public A { Member2 m2; int c; A test(int arg) { int w1; int v1;\n\n { int     *v3; }} int test(); };");
    code3.parse(TopDUContext::AllDeclarationsContextsAndUses | TopDUContext::ForceUpdateRecursive, true);
    
    lock.lock();
    QVERIFY(ADecl.declaration());
    QCOMPARE(ADecl.declaration()->identifier(), Identifier("A"));
    QVERIFY(CDecl.declaration());
    QCOMPARE(CDecl.declaration()->identifier(), Identifier("C"));
    QVERIFY(!C_m1.declaration());
    QVERIFY(C_m2.declaration());
    QCOMPARE(C_m2.declaration()->identifier(), Identifier("m2"));
    QVERIFY(C_test.declaration());
    QCOMPARE(C_test.declaration()->identifier(), Identifier("test"));
    QVERIFY(C_test_v1.declaration());
    QCOMPARE(C_test_v1.declaration()->identifier(), Identifier("v1"));
    QVERIFY(!C_test_v2.declaration());
    QVERIFY(C_test_v3.declaration());
    QCOMPARE(C_test_v3.declaration()->identifier(), Identifier("v3"));
  }  
}

void TestCppCodegen::testSimplifiedUpdating()
{
  {
    InsertIntoDUChain code1("duchaintest_1.h", "template <typename T> struct test{};"
                                               "template <> struct test<int> {};");
    code1.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST);

    DUChainReadLocker lock;
    //No specializations are handled in simplified parsing
    Cpp::TemplateDeclaration *specClassDecl = dynamic_cast<Cpp::TemplateDeclaration*>(code1->localDeclarations()[1]);
    QVERIFY(!specClassDecl->specializedFrom().data());
  }
  {
    InsertIntoDUChain code1("duchaintest_1.h", "struct A { struct Member2; struct Member1; };");
    InsertIntoDUChain code3("duchaintest_3.h", "#include <duchaintest_1.h>\n struct C : public A { Member1 m1; Member2 m2; };");
    kWarning() << "********************* Parsing step 1";
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
    
    DUChainReadLocker lock;

    QCOMPARE(code3->localDeclarations().size(), 1);
    QCOMPARE(code3->childContexts().size(), 1);
    QCOMPARE(code3->childContexts()[0]->localDeclarations().size(), 2);
    QVERIFY(code3->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QVERIFY(code3->childContexts()[0]->localDeclarations()[1]->abstractType().cast<StructureType>());
    QCOMPARE(code3->childContexts()[0]->importedParentContexts().size(), 1);
    QCOMPARE(code1->childContexts().size(), 1);
  }  
  {
    InsertIntoDUChain code1("duchaintest_1.h", "struct A { struct Member1; };");
    InsertIntoDUChain code2("duchaintest_2.h", "template<class T> struct B : public T{ struct Member2; };");
    InsertIntoDUChain code3("duchaintest_3.h", "#include <duchaintest_2.h>\n #include <duchaintest_1.h>\n struct C : public B<A> { Member1 m1; Member2 m2; };");
    kWarning() << "********************* Parsing step 1";
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
    
    DUChainReadLocker lock;

    QCOMPARE(code3->localDeclarations().size(), 1);
    QCOMPARE(code3->childContexts().size(), 1);
    QCOMPARE(code3->childContexts()[0]->localDeclarations().size(), 2);
    QVERIFY(code3->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QVERIFY(code3->childContexts()[0]->localDeclarations()[1]->abstractType().cast<StructureType>());
    QCOMPARE(code3->childContexts()[0]->importedParentContexts().size(), 1);
    QCOMPARE(code1->childContexts().size(), 1);
    
    QCOMPARE(code2->localDeclarations().size(), 1);
    ClassDeclaration* BClass = dynamic_cast<ClassDeclaration*>(code2->localDeclarations()[0]);
    QVERIFY(BClass);
    QCOMPARE(BClass->baseClassesSize(), 1u);
    QCOMPARE(BClass->baseClasses()[0].baseClass.abstractType()->toString(), QString("T"));
    
    QCOMPARE(code3->childContexts()[0]->importedParentContexts().size(), 1);
    
    DUContext* BAContext = code3->childContexts()[0]->importedParentContexts()[0].context(code3.topContext());
    QVERIFY(BAContext);
    QVERIFY(!BAContext->inSymbolTable());
    
    //2 contexts are imported: The template-context and the parent-class context
    QCOMPARE(BAContext->importedParentContexts().size(), 2);
    QCOMPARE(BAContext->importedParentContexts()[1].context(code3.topContext()), code1->childContexts()[0]);
    ClassDeclaration* classDecl = dynamic_cast<ClassDeclaration*>(BAContext->owner());
    QVERIFY(classDecl);
    QCOMPARE(classDecl->baseClassesSize(), 1u);
    QCOMPARE(classDecl->baseClasses()[0].baseClass.index(), code1->localDeclarations()[0]->indexedType().index());
    
    lock.unlock();
    kWarning() << "********************* Parsing step 2";
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::ForceUpdateRecursive, true);
    
    lock.lock();
    QCOMPARE(code3->localDeclarations().size(), 1);
    QCOMPARE(code3->childContexts().size(), 1);
    QCOMPARE(code3->childContexts()[0]->localDeclarations().size(), 2);
    QCOMPARE(code1->childContexts().size(), 1);

    QVERIFY(code3->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QVERIFY(code3->childContexts()[0]->localDeclarations()[1]->abstractType().cast<StructureType>());
    
    //BClass should have been updated, not deleted
    QVERIFY(BClass == dynamic_cast<ClassDeclaration*>(code2->localDeclarations()[0]));
    QCOMPARE(BClass->baseClassesSize(), 1u);
    QCOMPARE(BClass->baseClasses()[0].baseClass.abstractType()->toString(), QString("T"));

    //The template-instantiation context "B<A>" should have been deleted
    DUContext* BAContext2 = code3->childContexts()[0]->importedParentContexts()[0].context(code3.topContext());
//     kDebug() << "BAContexts" << BAContext << BAContext2;
//     QVERIFY(BAContext != BAContext2);
    QCOMPARE(BAContext2->importedParentContexts().size(), 2);
    QCOMPARE(BAContext2->importedParentContexts()[1].context(code3.topContext()), code1->childContexts()[0]);
    
    classDecl = dynamic_cast<ClassDeclaration*>(BAContext2->owner());
    QVERIFY(classDecl);
    QCOMPARE(classDecl->baseClassesSize(), 1u);
    QCOMPARE(classDecl->baseClasses()[0].baseClass.index(), code1->localDeclarations()[0]->indexedType().index());
  }
  {
    InsertIntoDUChain code1("duchaintest_1.h", "struct A { struct Member1; };");
    InsertIntoDUChain code2("duchaintest_2.h", "template<class T> struct B : public T{ struct Member2; };");
    InsertIntoDUChain code3("duchaintest_3.h", "#include <duchaintest_2.h>\n #include <duchaintest_1.h>\n typedef B<A> Parent; struct C : public Parent { Member1 m1; Member2 m2; };");
    
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
    
    DUChainReadLocker lock;

    QCOMPARE(code3->localDeclarations().size(), 2);
    QCOMPARE(code3->childContexts().size(), 1);
    QCOMPARE(code3->childContexts()[0]->localDeclarations().size(), 2);
    QVERIFY(code3->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QVERIFY(code3->childContexts()[0]->localDeclarations()[1]->abstractType().cast<StructureType>());
    
    lock.unlock();
    code3.parse(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::ForceUpdateRecursive, true);
    
    lock.lock();
    QCOMPARE(code3->localDeclarations().size(), 2);
    QCOMPARE(code3->childContexts().size(), 1);
    QCOMPARE(code3->childContexts()[0]->localDeclarations().size(), 2);
    QVERIFY(code3->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QVERIFY(code3->childContexts()[0]->localDeclarations()[1]->abstractType().cast<StructureType>());
  }
  
  {
    QString text = "class C { class D d; };";
    
    InsertIntoDUChain code("testsimplified.cpp", text);
    
    code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
    
    DUChainReadLocker lock;

    dumpAST(code);
    dumpDUChain(code);
    //The forward-declaration of 'D' is forwarded into the top-context
    QCOMPARE(code->localDeclarations().size(), 2);
    Declaration* classDecl = code->localDeclarations()[0];
    QCOMPARE(code->childContexts().size(), 1);
    QCOMPARE(code->childContexts()[0]->localDeclarations().size(), 1);
    QVERIFY(code->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QCOMPARE(code->childContexts()[0]->localDeclarations()[0]->abstractType()->toString(), QString("D"));
    
    lock.unlock();
    
    code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::ForceUpdate, true);
    lock.lock();
    
    dumpDUChain(code);
    
    QCOMPARE(code->localDeclarations().size(), 2);
    
    //Verify that an update has happened, rather than recreating everything
    QCOMPARE(code->localDeclarations()[0], classDecl);
    
    QCOMPARE(code->childContexts().size(), 1);
    QCOMPARE(code->childContexts()[0]->localDeclarations().size(), 1);
    QVERIFY(code->childContexts()[0]->localDeclarations()[0]->abstractType().cast<StructureType>());
    QCOMPARE(code->childContexts()[0]->localDeclarations()[0]->abstractType()->toString(), QString("D"));
  }
  
  {
    QString text = "class C {int test(); int mem; }; void test(int a); int i;";
    
    InsertIntoDUChain code("testsimplified.cpp", text);
    
    code.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST);
    
    DUChainReadLocker lock;

    dumpAST(code);
    dumpDUChain(code);
    
    QCOMPARE(code->localDeclarations().size(), 3);
    QCOMPARE(code->childContexts().size(), 1);
    QCOMPARE(code->childContexts()[0]->localDeclarations().size(), 2);
    QVERIFY(!code->childContexts()[0]->localDeclarations()[0]->abstractType());
    QVERIFY(!code->childContexts()[0]->localDeclarations()[1]->abstractType());
    //In simplified parsing mode, the type should not have been built
    QVERIFY(!code->localDeclarations()[0]->abstractType());
    QVERIFY(code->localDeclarations()[0]->kind() == Declaration::Type);
    QVERIFY(!code->localDeclarations()[1]->abstractType());
    QVERIFY(code->localDeclarations()[1]->kind() == Declaration::Instance);
    QVERIFY(!code->localDeclarations()[2]->abstractType());
    QVERIFY(code->localDeclarations()[2]->kind() == Declaration::Instance);
    
    {
      uint count;
      const KDevelop::CodeModelItem* items;
      
      KDevelop::CodeModel::self().items(code->url(), count, items);
      for(uint a = 0; a < count; ++a) {
        if(items[a].id == code->localDeclarations()[0]->qualifiedIdentifier()) {
          QVERIFY(items[a].kind & KDevelop::CodeModelItem::Class);
        }
      }
    }
  }
  
  {
    InsertIntoDUChain codeA("A.h", "#ifndef A_H\n #define A_H\n class A{}; \n#endif");
    InsertIntoDUChain codeB("B.h", "#include <A.h>\n class B{};");
    
    codeB.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::Recursive);
    
    DUChainReadLocker lock;

    //This is not only for debug-output, but also verifies that the AST is there as requesed
    dumpAST(codeA);

    QCOMPARE(codeB->importedParentContexts().size(), 1);
    QCOMPARE(codeA->localDeclarations().size(), 1);
    QVERIFY(codeA->parsingEnvironmentFile()->featuresSatisfied((TopDUContext::Features)(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::Recursive)));
    QVERIFY(codeB->parsingEnvironmentFile()->featuresSatisfied((TopDUContext::Features)(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::Recursive)));
    
    lock.unlock();

    //Update with more features
    codeB.parse(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::Recursive, true);
    
    lock.lock();
    QCOMPARE(codeB->importedParentContexts().size(), 1);
    QCOMPARE(codeA->localDeclarations().size(), 1);
    QVERIFY(codeA->parsingEnvironmentFile()->featuresSatisfied((TopDUContext::Features)(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::Recursive)));
    QVERIFY(codeB->parsingEnvironmentFile()->featuresSatisfied((TopDUContext::Features)(TopDUContext::AllDeclarationsContextsUsesAndAST | TopDUContext::Recursive)));
  }
  {
    ///Test whether "empty" files work
    InsertIntoDUChain codeA("Q.h", "");
    InsertIntoDUChain codeB("B.h", "#include <Q.h>\n class B{};");
    
    codeB.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::Recursive);
    
    DUChainReadLocker lock;

    QCOMPARE(codeB->importedParentContexts().size(), 1);
    QVERIFY(codeA->localDeclarations().isEmpty());
    QVERIFY(!codeA->parsingEnvironmentFile()->isProxyContext());
  }
  {
    ///Test the 'ignoring' of header-guards
    InsertIntoDUChain codeA("A.h", "#ifndef A_H\n #define A_H\n class A{};\n #ifdef HONK\n class Honk {};\n #endif\n \n#endif \n");
    InsertIntoDUChain codeB("B.h", "#define A_H\n \n #include <A.h>\n class B{};");
    
    QVERIFY(!codeA.tryGet());
    
    codeB.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::Recursive);
    
    DUChainReadLocker lock;

    //This is not only for debug-output, but also verifies that the AST is there as requesed
    dumpAST(codeA);
    
    QCOMPARE(codeA->localDeclarations().size(), 1);
    QCOMPARE(codeB->importedParentContexts().size(), 1);
    
    lock.unlock();
    
    codeB.parse(TopDUContext::SimplifiedVisibleDeclarationsAndContexts | TopDUContext::AST | TopDUContext::ForceUpdateRecursive | TopDUContext::Recursive);
    
    lock.lock();
    
    QCOMPARE(codeA->localDeclarations().size(), 1);
    QCOMPARE(codeB->importedParentContexts().size(), 1);
  }
}

void TestCppCodegen::testAstDuChainMapping()
{
  {
    InsertIntoDUChain code("ClassA.h", "class ClassA { public: ClassA(); private: int i;  float f, j;\
                                                        struct ContainedStruct { int i; ClassA * p;  } structVar; };");
    code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);

    DUChainReadLocker lock;
    
    //----ClassA.h----
    ParseSession::Ptr session = ParseSession::Ptr::dynamicCast<IAstContainer>(code->ast());
    QVERIFY(session);
    TranslationUnitAST * ast = session->topAstNode();
    QVERIFY(ast);
    QVERIFY(ast->declarations);
    QCOMPARE(ast->declarations->count(), 1);
    
    QVERIFY(AstUtils::childNode<SimpleDeclarationAST>(ast, 0));
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(ast, 0)->type_specifier,
              session->astNodeFromDeclaration(code->localDeclarations()[0]));
    //ClassA

    ClassSpecifierAST * classAst = AstUtils::node_cast<ClassSpecifierAST>
                                  (AstUtils::childNode<SimpleDeclarationAST>(ast, 0)->type_specifier);
    QVERIFY(classAst);
    
    DUContext * cont = code->localDeclarations()[0]->internalContext();
    QVERIFY(cont);
    
    QCOMPARE(classAst->member_specs->count(), 6);
    QCOMPARE(cont->localDeclarations().size(), 6);
    
    //ClassA()
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 1),
             session->astNodeFromDeclaration(cont->localDeclarations()[0]));
    //int i         
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 3),
             session->astNodeFromDeclaration(cont->localDeclarations()[1]));
    //float f         
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 4),
             session->astNodeFromDeclaration(cont->localDeclarations()[2]));
    //float j, part of the same declaration as above        
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 4),
             session->astNodeFromDeclaration(cont->localDeclarations()[3]));
    //struct ContainedStruct
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 5)->type_specifier,
             session->astNodeFromDeclaration(cont->localDeclarations()[4]));
    //ContainedStruct structVar, part of the same declaration as above         
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 5),
             session->astNodeFromDeclaration(cont->localDeclarations()[5]));
  }

  {
    //----ClassA.cpp----
    
    InsertIntoDUChain codeH("ClassA.h", "class ClassA { public: ClassA(); private: int i;  float f, j;\
                                                        struct ContainedStruct { int i; ClassA * p;  } structVar; };");
    
    InsertIntoDUChain code("ClassA.cpp", "#include<ClassA.h> \n ClassA::ClassA() : i(0), j(0.0) {structVar.i = 0; ContainedStruct testStruct; }");
    code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);

    DUChainReadLocker lock;
    
    ParseSession::Ptr session = ParseSession::Ptr::dynamicCast<IAstContainer>(code->ast());
    QVERIFY(session);
    TranslationUnitAST * ast = session->topAstNode();
    QVERIFY(ast);
    QVERIFY(ast->declarations);
    QCOMPARE(ast->declarations->count(), 1);
    
    QVERIFY(AstUtils::childNode<FunctionDefinitionAST>(ast, 0));
    QCOMPARE(AstUtils::childNode<FunctionDefinitionAST>(ast, 0),
              session->astNodeFromDeclaration(KDevelop::DeclarationPointer(code->localDeclarations()[0])));
    QCOMPARE(code->localDeclarations()[0]->context()->importedParentContexts().size(), 1);
    QVERIFY(code->localDeclarations()[0]->context()->importedParentContexts()[0].context(code.m_topContext) != code.m_topContext);
  }
  
  
  {
    InsertIntoDUChain code("AbstractClass.h", "class AbstractClass { public: virtual ~AbstractClass();\
                                                       virtual void pureVirtual() = 0; virtual const int constPure(const int &) const = 0; \
                                                       virtual void regularVirtual(); virtual const int constVirtual(const int &) const; int data; };");
    code.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);

    DUChainReadLocker lock;
    //----AbstractClass.h----
    ParseSession::Ptr session = ParseSession::Ptr::dynamicCast<IAstContainer>(code->ast());
    QVERIFY(session);
    TranslationUnitAST * ast = session->topAstNode();
    QVERIFY(ast);
    QVERIFY(ast->declarations);
    QCOMPARE(ast->declarations->count(), 1);
    
    QVERIFY(AstUtils::childNode<SimpleDeclarationAST>(ast, 0));
    QCOMPARE(session->astNodeFromDeclaration(code->localDeclarations()[0]),
            AstUtils::childNode<SimpleDeclarationAST>(ast, 0)->type_specifier);
    //AbstractClass
    ClassSpecifierAST * classAst = AstUtils::node_cast<ClassSpecifierAST>
                                  (AstUtils::childNode<SimpleDeclarationAST>(ast, 0)->type_specifier);
    QVERIFY(classAst);
    
    DUContext * cont = code->localDeclarations()[0]->internalContext();
    QVERIFY(cont);
    
    //~AbstractClass()
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 1),
             session->astNodeFromDeclaration(cont->localDeclarations()[0]));
    
    //pureVirtual()
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 2),
             session->astNodeFromDeclaration(cont->localDeclarations()[1]));
    
    //constPure()
    SimpleDeclarationAST * func = AstUtils::childNode<SimpleDeclarationAST>(classAst, 3);
    QCOMPARE(func,
             session->astNodeFromDeclaration(cont->localDeclarations()[2]));
    QVERIFY(AstUtils::childInitDeclarator(func, 0));
    QVERIFY(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0));
    QVERIFY(cont->localDeclarations()[2]->internalContext()->localDeclarations()[0]);
    QVERIFY(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0));
    QCOMPARE(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0),
             session->astNodeFromDeclaration(cont->localDeclarations()[2]->internalContext()->localDeclarations()[0]));
    
    //regularVirtual()
    QCOMPARE(AstUtils::childNode<SimpleDeclarationAST>(classAst, 4),
             session->astNodeFromDeclaration(cont->localDeclarations()[3]));
    
    //constPure()
    func = AstUtils::childNode<SimpleDeclarationAST>(classAst, 5);
    QCOMPARE(func,
             session->astNodeFromDeclaration(cont->localDeclarations()[4]));
    QVERIFY(AstUtils::childInitDeclarator(func, 0));
    QVERIFY(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0));
    QVERIFY(cont->localDeclarations()[4]->internalContext()->localDeclarations()[0]);
    QVERIFY(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0));
    QCOMPARE(AstUtils::parameterAtIndex(AstUtils::childInitDeclarator(func, 0)->declarator, 0),
             session->astNodeFromDeclaration(cont->localDeclarations()[4]->internalContext()->localDeclarations()[0]));
  }
}

void TestCppCodegen::testMacroDeclarationOrder()
{
  InsertIntoDUChain source("thefile.h",
    "#define DECLARE_MY_ITERATOR\
     template <class Key, class T> class MyIteratorMacro { T value(); Key key(); };\n\
     DECLARE_MY_ITERATOR\n\
     template <class Key, class T> class MyIteratorDirect { Key key(); T value(); };");
  source.parse(TopDUContext::AllDeclarationsContextsUsesAndAST);
  DUChainReadLocker lock;
  ReferencedTopDUContext top = source.m_topContext;
  Declaration* macroKey = top->findDeclarations(QualifiedIdentifier("MyIteratorMacro<int,char>::key")).first();
  Declaration* macroVal = top->findDeclarations(QualifiedIdentifier("MyIteratorMacro<int,char>::value")).first();
  Declaration* directKey = top->findDeclarations(QualifiedIdentifier("MyIteratorDirect<int,char>::key")).first();
  Declaration* directVal = top->findDeclarations(QualifiedIdentifier("MyIteratorDirect<int,char>::value")).first();
  QVERIFY(directKey->abstractType()->toString() == "function int ()");
  QVERIFY(directVal->abstractType()->toString() == "function char ()");
  QVERIFY(macroKey->abstractType()->toString() == "function int ()");
  QVERIFY(macroVal->abstractType()->toString() == "function char ()");
}

void TestCppCodegen::testMoveIntoSource()
{
  QFETCH(QString, origHeader);
  QFETCH(QString, origImpl);
  QFETCH(QString, newHeader);
  QFETCH(QString, newImpl);
  QFETCH(QualifiedIdentifier, id);

  // make sure there aren't any stale queued documents to be parsed
  QCOMPARE(ICore::self()->languageController()->backgroundParser()->queuedCount(), 0);

  TestFile header(origHeader, "h");
  TestFile impl(origImpl, "cpp", &header);

  header.parse(KDevelop::TopDUContext::AllDeclarationsContextsAndUses);
  QVERIFY(header.waitForParsed());
  impl.parse(KDevelop::TopDUContext::AllDeclarationsContextsAndUses);
  QVERIFY(impl.waitForParsed());

  ReferencedTopDUContext refTop = header.topContext();
  QVERIFY(refTop);

  IndexedDeclaration declaration;
  {
    DUChainReadLocker lock;
    TopDUContext* top = DUChainUtils::contentContextFromProxyContext(refTop);
    QList< Declaration* > decls = top->findDeclarations(id);
    QCOMPARE(decls.size(), 1);
    declaration = IndexedDeclaration(decls.first());
    QVERIFY(declaration.isValid());
  }
  CodeRepresentation::setDiskChangesForbidden(false);
  SimpleRefactoring *refactoring = new SimpleRefactoring();
  QCOMPARE(refactoring->moveIntoSource(declaration), QString());
  delete refactoring;
  CodeRepresentation::setDiskChangesForbidden(true);

  QCOMPARE(header.fileContents(), newHeader);
  QCOMPARE(impl.fileContents(), newImpl);

  // SimpleRefactoring::moveIntoSource re-adds the documents to the BackgroundParser
  // make sure we don't leave any stale requests for the next tests in the BackgroundParser
  ICore::self()->languageController()->backgroundParser()->revertAllRequests(0);
  QCOMPARE(ICore::self()->languageController()->backgroundParser()->queuedCount(), 0);
}

void TestCppCodegen::testMoveIntoSource_data()
{
  QTest::addColumn<QString>("origHeader");
  QTest::addColumn<QString>("origImpl");
  QTest::addColumn<QString>("newHeader");
  QTest::addColumn<QString>("newImpl");
  QTest::addColumn<QualifiedIdentifier>("id");

  const QualifiedIdentifier fooId("::foo");

  /// NOTE: THIS CODE MUST _NOT_ DEPEND ON A SPECIFIC FORMATTER CONFIGURATION!

  QTest::newRow("globalfunction") << QString("int foo()\n{\n    int i = 0;\n    return 0;\n}\n")
                                  << QString()
                                  << QString("int foo();\n")
                                  << QString("\nint foo()\n{\n    int i = 0;\n    return 0;\n}")
                                  << fooId;

  QTest::newRow("staticfunction") << QString("static int foo()\n{\n    int i = 0;\n    return 0;\n}\n")
                                  << QString()
                                  << QString("static int foo();\n")
                                  << QString("\nint foo()\n{\n    int i = 0;\n    return 0;\n}")
                                  << fooId;

  QTest::newRow("funcsameline") << QString("int foo() {\n    int i = 0;\n    return 0;\n}\n")
                                << QString()
                                << QString("int foo();\n")
                                << QString("\nint foo() {\n    int i = 0;\n    return 0;\n}")
                                << fooId;

  QTest::newRow("func-comment") << QString("int foo()\n/* foobar */ {\n    int i = 0;\n    return 0;\n}\n")
                                << QString()
                                << QString("int foo()\n/* foobar */;\n")
                                ///TODO: should the comment be moved as well?
                                << QString("\nint foo() {\n    int i = 0;\n    return 0;\n}")
                                << fooId;

  QTest::newRow("func-comment2") << QString("int foo()\n/*asdf*/\n{\n    int i = 0;\n    return 0;\n}\n")
                                << QString()
                                << QString("int foo()\n/*asdf*/;\n")
                                ///TODO: should the comment be moved as well?
                                << QString("\nint foo()\n{\n    int i = 0;\n    return 0;\n}")
                                << fooId;

  const QualifiedIdentifier aFooId("a::foo");
  QTest::newRow("class-method") << QString("class a {\n    int foo(){\n        return 0;\n    }\n};\n")
                                << QString()
                                << QString("class a {\n    int foo();\n};\n")
                                << QString("\nint a::foo() {\n        return 0;\n    }")
                                << aFooId;

  QTest::newRow("class-method-const") << QString("class a {\n    int foo() const\n    {\n        return 0;\n    }\n};\n")
                                << QString()
                                << QString("class a {\n    int foo() const;\n};\n")
                                << QString("\nint a::foo() const\n    {\n        return 0;\n    }")
                                << aFooId;

  QTest::newRow("class-method-const-sameline") << QString("class a {\n    int foo() const{\n        return 0;\n    }\n};\n")
                                << QString()
                                << QString("class a {\n    int foo() const;\n};\n")
                                << QString("\nint a::foo() const {\n        return 0;\n    }")
                                << aFooId;
}

#include "moc_test_cppcodegen.cpp"