diff --git a/src/plugins/autotest/autotest.pro b/src/plugins/autotest/autotest.pro
index 495b20153b2..18d665b3758 100644
--- a/src/plugins/autotest/autotest.pro
+++ b/src/plugins/autotest/autotest.pro
@@ -23,6 +23,7 @@ SOURCES += \
     testsettingspage.cpp \
     testnavigationwidget.cpp \
     testoutputreader.cpp \
+    itestparser.cpp \
     gtest/gtestconfiguration.cpp \
     gtest/gtestparser.cpp \
     gtest/gtesttreeitem.cpp \
diff --git a/src/plugins/autotest/autotest.qbs b/src/plugins/autotest/autotest.qbs
index b768597231b..b3b55a294a0 100644
--- a/src/plugins/autotest/autotest.qbs
+++ b/src/plugins/autotest/autotest.qbs
@@ -67,6 +67,8 @@ QtcPlugin {
         "testtreeview.h",
         "testoutputreader.cpp",
         "testoutputreader.h",
+        "itestparser.cpp",
+        "itestparser.h",
         "itestframework.h",
         "testframeworkmanager.cpp",
         "testframeworkmanager.h"
diff --git a/src/plugins/autotest/autotest_utils.h b/src/plugins/autotest/autotest_utils.h
index d8dd96c4c5b..47d8e8417a2 100644
--- a/src/plugins/autotest/autotest_utils.h
+++ b/src/plugins/autotest/autotest_utils.h
@@ -25,13 +25,10 @@
 
 #pragma once
 
-#include <coreplugin/editormanager/editormanager.h>
 #include <cpptools/cppmodelmanager.h>
-#include <cpptools/cppworkingcopy.h>
 #include <cpptools/projectpart.h>
-#include <utils/textfileformat.h>
 
-#include <QStringList>
+#include <QString>
 
 namespace Autotest {
 namespace Internal {
@@ -52,24 +49,6 @@ public:
 
         return QString();
     }
-
-    static QByteArray getFileContent(QString filePath)
-    {
-        QByteArray fileContent;
-        CppTools::CppModelManager *cppMM = CppTools::CppModelManager::instance();
-        CppTools::WorkingCopy wc = cppMM->workingCopy();
-        if (wc.contains(filePath)) {
-            fileContent = wc.source(filePath);
-        } else {
-            QString error;
-            const QTextCodec *codec = Core::EditorManager::defaultTextCodec();
-            if (Utils::TextFileFormat::readFileUTF8(filePath, codec, &fileContent, &error)
-                    != Utils::TextFileFormat::ReadSuccess) {
-                qDebug() << "Failed to read file" << filePath << ":" << error;
-            }
-        }
-        return fileContent;
-    }
 };
 
 } // namespace Internal
diff --git a/src/plugins/autotest/gtest/gtestparser.cpp b/src/plugins/autotest/gtest/gtestparser.cpp
index 9ec7eda3bab..bf7e8718a1e 100644
--- a/src/plugins/autotest/gtest/gtestparser.cpp
+++ b/src/plugins/autotest/gtest/gtestparser.cpp
@@ -78,7 +78,7 @@ static bool handleGTest(QFutureInterface<TestParseResultPtr> futureInterface,
 {
     const CppTools::CppModelManager *modelManager = CppTools::CppModelManager::instance();
     const QString &filePath = doc->fileName();
-    const QByteArray &fileContent = TestUtils::getFileContent(filePath);
+    const QByteArray &fileContent = CppParser::getFileContent(filePath);
     CPlusPlus::Document::Ptr document = snapshot.preprocessedDocument(fileContent, filePath);
     document->check();
     CPlusPlus::AST *ast = document->translationUnit()->ast();
diff --git a/src/plugins/autotest/itestparser.cpp b/src/plugins/autotest/itestparser.cpp
new file mode 100644
index 00000000000..82409df2991
--- /dev/null
+++ b/src/plugins/autotest/itestparser.cpp
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "itestparser.h"
+
+#include <coreplugin/editormanager/editormanager.h>
+#include <cpptools/cppmodelmanager.h>
+#include <utils/textfileformat.h>
+
+namespace Autotest {
+namespace Internal {
+
+static CppParser *s_parserInstance = 0;
+
+CppParser::CppParser()
+{
+    s_parserInstance = this;
+}
+
+void CppParser::init(const QStringList &filesToParse)
+{
+    Q_UNUSED(filesToParse);
+    m_cppSnapshot = CppTools::CppModelManager::instance()->snapshot();
+    m_workingCopy = CppTools::CppModelManager::instance()->workingCopy();
+}
+
+bool CppParser::selectedForBuilding(const QString &fileName)
+{
+    QList<CppTools::ProjectPart::Ptr> projParts =
+            CppTools::CppModelManager::instance()->projectPart(fileName);
+
+    return projParts.size() && projParts.at(0)->selectedForBuilding;
+}
+
+QByteArray CppParser::getFileContent(const QString &filePath)
+{
+    QByteArray fileContent;
+    if (s_parserInstance->m_workingCopy.contains(filePath)) {
+        fileContent = s_parserInstance->m_workingCopy.source(filePath);
+    } else {
+        QString error;
+        const QTextCodec *codec = Core::EditorManager::defaultTextCodec();
+        if (Utils::TextFileFormat::readFileUTF8(filePath, codec, &fileContent, &error)
+                != Utils::TextFileFormat::ReadSuccess) {
+            qDebug() << "Failed to read file" << filePath << ":" << error;
+        }
+    }
+    return fileContent;
+}
+
+void CppParser::release()
+{
+    m_cppSnapshot = CPlusPlus::Snapshot();
+    m_workingCopy = CppTools::WorkingCopy();
+}
+
+} // namespace Internal
+} // namespace Autotest
diff --git a/src/plugins/autotest/itestparser.h b/src/plugins/autotest/itestparser.h
index 98bd0c5cad9..e6ebf74b93f 100644
--- a/src/plugins/autotest/itestparser.h
+++ b/src/plugins/autotest/itestparser.h
@@ -30,7 +30,7 @@
 
 #include <coreplugin/id.h>
 #include <cplusplus/CppDocument.h>
-#include <cpptools/cppmodelmanager.h>
+#include <cpptools/cppworkingcopy.h>
 #include <qmljs/qmljsdocument.h>
 
 namespace Autotest {
@@ -64,6 +64,7 @@ public:
     virtual void init(const QStringList &filesToParse) = 0;
     virtual bool processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
                                  const QString &fileName) = 0;
+    virtual void release() = 0;
     void setId(const Core::Id &id) { m_id = id; }
     Core::Id id() const { return m_id; }
 
@@ -74,22 +75,15 @@ private:
 class CppParser : public ITestParser
 {
 public:
-    void init(const QStringList &filesToParse) override
-    {
-        Q_UNUSED(filesToParse);
-        m_cppSnapshot = CppTools::CppModelManager::instance()->snapshot();
-    }
-
-    static bool selectedForBuilding(const QString &fileName)
-    {
-        QList<CppTools::ProjectPart::Ptr> projParts =
-                CppTools::CppModelManager::instance()->projectPart(fileName);
-
-        return projParts.size() && projParts.at(0)->selectedForBuilding;
-    }
+    CppParser();
+    void init(const QStringList &filesToParse) override;
+    static bool selectedForBuilding(const QString &fileName);
+    static QByteArray getFileContent(const QString &filePath);
+    void release() override;
 
 protected:
     CPlusPlus::Snapshot m_cppSnapshot;
+    CppTools::WorkingCopy m_workingCopy;
 };
 
 } // namespace Internal
diff --git a/src/plugins/autotest/qtest/qttestparser.cpp b/src/plugins/autotest/qtest/qttestparser.cpp
index 157a7fc2ab6..1c273a5e387 100644
--- a/src/plugins/autotest/qtest/qttestparser.cpp
+++ b/src/plugins/autotest/qtest/qttestparser.cpp
@@ -81,7 +81,7 @@ static bool qtTestLibDefined(const QString &fileName)
 static QString testClass(const CppTools::CppModelManager *modelManager,
                          const CPlusPlus::Snapshot &snapshot, const QString &fileName)
 {
-    const QByteArray &fileContent = TestUtils::getFileContent(fileName);
+    const QByteArray &fileContent = CppParser::getFileContent(fileName);
     CPlusPlus::Document::Ptr document = modelManager->document(fileName);
     if (document.isNull())
         return QString();
@@ -150,7 +150,7 @@ static QSet<QString> filesWithDataFunctionDefinitions(
 static QMap<QString, TestCodeLocationList> checkForDataTags(const QString &fileName,
             const CPlusPlus::Snapshot &snapshot)
 {
-    const QByteArray fileContent = TestUtils::getFileContent(fileName);
+    const QByteArray fileContent = CppParser::getFileContent(fileName);
     CPlusPlus::Document::Ptr document = snapshot.preprocessedDocument(fileContent, fileName);
     document->check();
     CPlusPlus::AST *ast = document->translationUnit()->ast();
diff --git a/src/plugins/autotest/quick/quicktestparser.cpp b/src/plugins/autotest/quick/quicktestparser.cpp
index 87dcc301228..7c0074ff736 100644
--- a/src/plugins/autotest/quick/quicktestparser.cpp
+++ b/src/plugins/autotest/quick/quicktestparser.cpp
@@ -107,7 +107,7 @@ static QString quickTestName(const CPlusPlus::Document::Ptr &doc)
         const QByteArray name = macro.macro().name();
         if (QuickTestUtils::isQuickTestMacro(name)) {
             CPlusPlus::Document::Block arg = macro.arguments().at(0);
-            return QLatin1String(TestUtils::getFileContent(doc->fileName())
+            return QLatin1String(CppParser::getFileContent(doc->fileName())
                                  .mid(arg.bytesBegin(), arg.bytesEnd() - arg.bytesBegin()));
         }
     }
diff --git a/src/plugins/autotest/quick/quicktestparser.h b/src/plugins/autotest/quick/quicktestparser.h
index 1e968c743e2..76ace6e435e 100644
--- a/src/plugins/autotest/quick/quicktestparser.h
+++ b/src/plugins/autotest/quick/quicktestparser.h
@@ -27,6 +27,8 @@
 
 #include "../itestparser.h"
 
+#include <qmljs/qmljsdocument.h>
+
 namespace Autotest {
 namespace Internal {
 
diff --git a/src/plugins/autotest/testcodeparser.cpp b/src/plugins/autotest/testcodeparser.cpp
index 584d622527e..857c16b25f3 100644
--- a/src/plugins/autotest/testcodeparser.cpp
+++ b/src/plugins/autotest/testcodeparser.cpp
@@ -76,6 +76,7 @@ TestCodeParser::TestCodeParser(TestTreeModel *parent)
             this, [this] (int index) {
         emit testParseResultReady(m_futureWatcher.resultAt(index));
     });
+    connect(this, &TestCodeParser::parsingFinished, this, &TestCodeParser::releaseParserInternals);
 }
 
 TestCodeParser::~TestCodeParser()
@@ -425,5 +426,11 @@ void TestCodeParser::onPartialParsingFinished()
     }
 }
 
+void TestCodeParser::releaseParserInternals()
+{
+    for (ITestParser *parser : m_testCodeParsers)
+        parser->release();
+}
+
 } // namespace Internal
 } // namespace Autotest
diff --git a/src/plugins/autotest/testcodeparser.h b/src/plugins/autotest/testcodeparser.h
index 830b52f92ec..9bb1480b0a7 100644
--- a/src/plugins/autotest/testcodeparser.h
+++ b/src/plugins/autotest/testcodeparser.h
@@ -27,6 +27,8 @@
 
 #include "itestparser.h"
 
+#include <qmljs/qmljsdocument.h>
+
 #include <QObject>
 #include <QMap>
 #include <QFutureWatcher>
@@ -84,6 +86,7 @@ private:
     void onAllTasksFinished(Core::Id type);
     void onFinished();
     void onPartialParsingFinished();
+    void releaseParserInternals();
 
     TestTreeModel *m_model;