diff --git a/src/plugins/coreplugin/coreplugin.pro b/src/plugins/coreplugin/coreplugin.pro
index 192c16f4bb79eb8fd6ed918572a4ddaeb5f5fad4..accc477d717e78e4766aa94d3700ec13a2008b8c 100644
--- a/src/plugins/coreplugin/coreplugin.pro
+++ b/src/plugins/coreplugin/coreplugin.pro
@@ -241,3 +241,8 @@ else:unix {
     }
 }
 OTHER_FILES += editormanager/BinFiles.mimetypes.xml
+
+equals(TEST, 1) {
+    SOURCES += plugintestutils.cpp
+    HEADERS += plugintestutils.h
+}
diff --git a/src/plugins/coreplugin/coreplugin.qbs b/src/plugins/coreplugin/coreplugin.qbs
index 6ebcfb76a0c2b3b10bb773c8b367a3f69f63e6fa..374da3f4d4ab1299ebdfe74f3bb34fbac7caceba 100644
--- a/src/plugins/coreplugin/coreplugin.qbs
+++ b/src/plugins/coreplugin/coreplugin.qbs
@@ -1,5 +1,6 @@
 import qbs.base 1.0
 import "../QtcPlugin.qbs" as QtcPlugin
+import "../../../qbs/defaults.js" as Defaults
 
 QtcPlugin {
     name: "Core"
@@ -258,6 +259,15 @@ QtcPlugin {
         ]
     }
 
+    Group {
+        name: "Tests"
+        condition: Defaults.testsEnabled(qbs)
+        files: [
+            "plugintestutils.cpp",
+            "plugintestutils.h"
+        ]
+    }
+
     Export {
         Depends { name: "Aggregation" }
         Depends { name: "Utils" }
diff --git a/src/plugins/coreplugin/plugintestutils.cpp b/src/plugins/coreplugin/plugintestutils.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d94f606da10e0f211463dcb0a925e1bb0d331e83
--- /dev/null
+++ b/src/plugins/coreplugin/plugintestutils.cpp
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** 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.
+**
+** GNU Lesser General Public License Usage
+** 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
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+
+#include "plugintestutils.h"
+
+#include "editormanager/editormanager.h"
+#include "editormanager/ieditor.h"
+
+#include <QCoreApplication>
+
+void Core::Tests::closeAndDeleteEditors(QList<IEditor *> editorsToClose)
+{
+    EditorManager::instance()->closeEditors(editorsToClose, /*askAboutModifiedEditors=*/ false);
+    // The editors are going to be deleted by the event loop (deleteLater()),
+    // but for tests we need them deleted now.
+    foreach (Core::IEditor *editor, editorsToClose)
+        QCoreApplication::sendPostedEvents(editor, QEvent::DeferredDelete);
+}
+
+void Core::Tests::closeAndDeleteEditor(Core::IEditor *editor)
+{
+    closeAndDeleteEditors(QList<IEditor *>() << editor);
+}
diff --git a/src/plugins/coreplugin/plugintestutils.h b/src/plugins/coreplugin/plugintestutils.h
new file mode 100644
index 0000000000000000000000000000000000000000..69ada2bad3266188c00327acf6ff0c08961b4c70
--- /dev/null
+++ b/src/plugins/coreplugin/plugintestutils.h
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** 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.
+**
+** GNU Lesser General Public License Usage
+** 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
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+
+#ifndef PLUGINTESTUTILS_H
+#define PLUGINTESTUTILS_H
+
+#include "core_global.h"
+
+#include <QList>
+
+namespace Core {
+
+class IEditor;
+
+namespace Tests {
+
+void CORE_EXPORT closeAndDeleteEditor(Core::IEditor *editor);
+void CORE_EXPORT closeAndDeleteEditors(QList<Core::IEditor *> editorsToClose);
+
+} // namespace Tests
+} // namespace Core
+
+#endif // PLUGINTESTUTILS_H
diff --git a/src/plugins/cppeditor/cppdoxygen_test.cpp b/src/plugins/cppeditor/cppdoxygen_test.cpp
index 13d0d2d3a0025c1ecd00da576a256c2705e1787d..5ee9989f608be92490530b658d5fd98b5b1d5964 100644
--- a/src/plugins/cppeditor/cppdoxygen_test.cpp
+++ b/src/plugins/cppeditor/cppdoxygen_test.cpp
@@ -30,6 +30,7 @@
 #include "cppeditor.h"
 
 #include <coreplugin/editormanager/editormanager.h>
+#include <coreplugin/plugintestutils.h>
 #include <cplusplus/CppDocument.h>
 #include <cppeditor/cppeditor.h>
 #include <cppeditor/cppeditorplugin.h>
@@ -115,8 +116,7 @@ TestCase::TestCase(const QByteArray &input)
 
 TestCase::~TestCase()
 {
-    EditorManager::instance()->closeEditors(QList<Core::IEditor *>() << editor, false);
-    QCoreApplication::processEvents(); // process any pending events
+    Core::Tests::closeAndDeleteEditor(editor);
 
     // Remove the test file from the code-model
     CppTools::CppModelManagerInterface *mmi = CppTools::CppModelManagerInterface::instance();
diff --git a/src/plugins/cppeditor/cppquickfix_test.cpp b/src/plugins/cppeditor/cppquickfix_test.cpp
index 0d1bf885faa6ecc504e5b9173569ccad83fa59b6..8ac2e80d271496389cd5effa1b9e24ee295ac36e 100644
--- a/src/plugins/cppeditor/cppquickfix_test.cpp
+++ b/src/plugins/cppeditor/cppquickfix_test.cpp
@@ -34,6 +34,7 @@
 #include "cppquickfixassistant.h"
 #include "cppquickfixes.h"
 
+#include <coreplugin/plugintestutils.h>
 #include <cpptools/cppcodestylepreferences.h>
 #include <cpptools/cppmodelmanager.h>
 #include <cpptools/cpppreprocessor.h>
@@ -237,6 +238,7 @@ void TestCase::init(const QStringList &includePaths)
 
         // Rehighlight
         testFile->editorWidget->semanticRehighlight(true);
+
         // Wait for the semantic info from the future
         while (testFile->editorWidget->semanticInfo().doc.isNull())
             QCoreApplication::processEvents();
@@ -262,8 +264,7 @@ TestCase::~TestCase()
         if (testFile->editor)
             editorsToClose << testFile->editor;
     }
-    EditorManager::instance()->closeEditors(editorsToClose, false);
-    QCoreApplication::processEvents(); // process any pending events
+    Core::Tests::closeAndDeleteEditors(editorsToClose);
 
     // Remove the test files from the code-model
     CppModelManagerInterface *mmi = CppModelManagerInterface::instance();
diff --git a/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp b/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
index 428b6e20793d6dc4ebb2bef4de68858b0bed329b..a236396de94c1fcff93872d86db0c68216317289 100644
--- a/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
+++ b/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
@@ -30,6 +30,7 @@
 #include "cppeditor.h"
 #include "cppeditorplugin.h"
 
+#include <coreplugin/plugintestutils.h>
 #include <utils/fileutils.h>
 
 #include <QDebug>
@@ -251,8 +252,7 @@ TestCase::~TestCase()
         if (testFile->editor)
             editorsToClose << testFile->editor;
     }
-    EditorManager::instance()->closeEditors(editorsToClose, false);
-    QCoreApplication::processEvents(); // process any pending events
+    Core::Tests::closeAndDeleteEditors(editorsToClose);
 
     // Remove the test files from the code-model
     CppModelManagerInterface *mmi = CppTools::CppModelManagerInterface::instance();
diff --git a/src/plugins/cpptools/cppcompletion_test.cpp b/src/plugins/cpptools/cppcompletion_test.cpp
index bb1bbd2d6e6b0963af075865c71237dc3158306b..d08f62a172ddaec11c43740ed41c1ebbd8e16b5d 100644
--- a/src/plugins/cpptools/cppcompletion_test.cpp
+++ b/src/plugins/cpptools/cppcompletion_test.cpp
@@ -31,6 +31,7 @@
 #include "cppcompletionassist.h"
 #include "cppmodelmanager.h"
 
+#include <coreplugin/plugintestutils.h>
 #include <texteditor/plaintexteditor.h>
 #include <texteditor/codeassist/iassistproposal.h>
 
@@ -90,8 +91,7 @@ public:
 
     ~CompletionTestCase()
     {
-        EditorManager::instance()->closeEditors(QList<IEditor*>() << editor,
-                                                /*askAboutModifiedEditors=*/ false);
+        Core::Tests::closeAndDeleteEditor(editor);
         cmm->GC();
         QVERIFY(cmm->snapshot().isEmpty());
     }