diff --git a/src/plugins/autotest/testcodeparser.cpp b/src/plugins/autotest/testcodeparser.cpp
index 696780a9501..e5bdb4e70f7 100644
--- a/src/plugins/autotest/testcodeparser.cpp
+++ b/src/plugins/autotest/testcodeparser.cpp
@@ -971,13 +971,17 @@ void TestCodeParser::updateModelAndCppDocMap(CPlusPlus::Document::Ptr document,
         foreach (const QString &file, files) {
             const bool setReferencingFile = (files.size() == 2 && file == declaringFile);
             ReferencingInfo testInfo;
-            if (setReferencingFile)
+            if (setReferencingFile) {
                 testInfo.referencingFile = fileName;
+                testItem->setReferencingFile(fileName);
+            }
             testInfo.type = TestTreeModel::AutoTest;
             m_referencingFiles.insert(file, testInfo);
         }
         emit testItemModified(testItem, TestTreeModel::AutoTest, files);
     } else {
+        if (declaringFile != fileName)
+            testItem->setReferencingFile(fileName);
         emit testItemCreated(testItem, TestTreeModel::AutoTest);
         ReferencingInfo testInfo;
         testInfo.type = TestTreeModel::AutoTest;
@@ -1005,6 +1009,7 @@ void TestCodeParser::updateModelAndQuickDocMap(QmlJS::Document::Ptr document,
         ReferencingInfo testInfo;
         testInfo.referencingFile = referencingFile;
         testInfo.type = TestTreeModel::QuickTest;
+        testItem->setReferencingFile(referencingFile);
         emit testItemModified(testItem, TestTreeModel::QuickTest, { fileName });
         m_referencingFiles.insert(fileName, testInfo);
     } else {
@@ -1015,6 +1020,7 @@ void TestCodeParser::updateModelAndQuickDocMap(QmlJS::Document::Ptr document,
         ReferencingInfo testInfo;
         testInfo.referencingFile = referencingFile;
         testInfo.type = TestTreeModel::QuickTest;
+        testItem->setReferencingFile(referencingFile);
         emit testItemCreated(testItem, TestTreeModel::QuickTest);
         m_referencingFiles.insert(filePath, testInfo);
     }
diff --git a/src/plugins/autotest/testtreeitem.cpp b/src/plugins/autotest/testtreeitem.cpp
index 2011b4412cc..679cfc0e19f 100644
--- a/src/plugins/autotest/testtreeitem.cpp
+++ b/src/plugins/autotest/testtreeitem.cpp
@@ -70,6 +70,7 @@ TestTreeItem::TestTreeItem(const TestTreeItem &other)
       m_line(other.m_line),
       m_column(other.m_column),
       m_mainFile(other.m_mainFile),
+      m_referencingFile(other.m_referencingFile),
       m_state(other.m_state)
 {
     for (int row = 0, count = other.childCount(); row < count; ++row)
@@ -185,6 +186,10 @@ bool TestTreeItem::modifyContent(const TestTreeItem *modified)
         m_mainFile = modified->m_mainFile;
         hasBeenModified = true;
     }
+    if (m_referencingFile != modified->m_referencingFile) {
+        m_referencingFile = modified->m_referencingFile;
+        hasBeenModified = true;
+    }
     if (m_type != modified->m_type) {
         m_type = modified->m_type;
         hasBeenModified = true;
diff --git a/src/plugins/autotest/testtreeitem.h b/src/plugins/autotest/testtreeitem.h
index 325486b6694..cf04e780a48 100644
--- a/src/plugins/autotest/testtreeitem.h
+++ b/src/plugins/autotest/testtreeitem.h
@@ -87,6 +87,8 @@ public:
     unsigned column() const { return m_column; }
     QString mainFile() const { return m_mainFile; }
     void setMainFile(const QString &mainFile) { m_mainFile = mainFile; }
+    QString referencingFile() const { return m_referencingFile; }
+    void setReferencingFile(const QString &referencingFile) { m_referencingFile = referencingFile; }
     void setChecked(const Qt::CheckState checked);
     Qt::CheckState checked() const;
     Type type() const { return m_type; }
@@ -106,6 +108,7 @@ private:
     unsigned m_line;
     unsigned m_column;
     QString m_mainFile;  // main for Quick tests, project file for gtest
+    QString m_referencingFile;
     TestStates m_state;
 };
 
diff --git a/src/plugins/autotest/testtreemodel.cpp b/src/plugins/autotest/testtreemodel.cpp
index 65b7759315e..2f54aa9e1a1 100644
--- a/src/plugins/autotest/testtreemodel.cpp
+++ b/src/plugins/autotest/testtreemodel.cpp
@@ -42,6 +42,38 @@
 namespace Autotest {
 namespace Internal {
 
+class ReferencingFilesFinder : public Utils::TreeItemVisitor
+{
+public:
+    ReferencingFilesFinder() {}
+
+    bool preVisit(Utils::TreeItem *item) override
+    {
+        // 0 = invisible root, 1 = main categories, 2 = test cases, 3 = test functions
+        return item->level() < 4;
+    }
+
+    void visit(Utils::TreeItem *item) override
+    {
+        // skip invisible root item
+        if (!item->parent())
+            return;
+
+        if (auto testItem = static_cast<TestTreeItem *>(item)) {
+            if (!testItem->filePath().isEmpty() && !testItem->referencingFile().isEmpty())
+                m_referencingFiles.insert(testItem->filePath(), testItem->referencingFile());
+        }
+    }
+
+    QMap<QString, QString> referencingFiles() const { return m_referencingFiles; }
+
+private:
+    QMap<QString, QString> m_referencingFiles;
+
+};
+
+/***********************************************************************************************/
+
 TestTreeModel::TestTreeModel(QObject *parent) :
     TreeModel(parent),
     m_autoTestRootItem(new TestTreeItem(tr("Auto Tests"), QString(), TestTreeItem::Root)),
@@ -591,6 +623,13 @@ void TestTreeModel::removeGTests(const QString &filePath)
     emit testTreeModelChanged();
 }
 
+QMap<QString, QString> TestTreeModel::referencingFiles() const
+{
+    ReferencingFilesFinder finder;
+    rootItem()->walkTree(&finder);
+    return finder.referencingFiles();
+}
+
 void TestTreeModel::addTestTreeItem(TestTreeItem *item, TestTreeModel::Type type)
 {
     TestTreeItem *parent = rootItemForType(type);
diff --git a/src/plugins/autotest/testtreemodel.h b/src/plugins/autotest/testtreemodel.h
index bf96c8e0152..33fafa96422 100644
--- a/src/plugins/autotest/testtreemodel.h
+++ b/src/plugins/autotest/testtreemodel.h
@@ -78,6 +78,8 @@ public:
     QMultiMap<QString, int> gtestNamesAndSets() const;
 #endif
 
+    QMap<QString, QString> referencingFiles() const;
+
 signals:
     void testTreeModelChanged();