1 files changed, 7 insertions, 0 deletions
diff --git a/tests/unit/unittest/gtest-creator-printing.h b/tests/unit/unittest/gtest-creator-printing.h
index 565479be03..cdef782578 100644
--- a/tests/unit/unittest/gtest-creator-printing.h
+++ b/tests/unit/unittest/gtest-creator-printing.h
@@ -356,6 +356,13 @@ class VariantProperty;
 
 std::ostream &operator<<(std::ostream &out, const ModelNode &node);
 std::ostream &operator<<(std::ostream &out, const VariantProperty &property);
+
+namespace Internal {
+class ImageCacheStorageEntry;
+
+std::ostream &operator<<(std::ostream &out, const ImageCacheStorageEntry &entry);
+
+} // namespace Internal
 } // namespace QmlDesigner
 
 void setFilePathCache(ClangBackEnd::FilePathCaching *filePathCache);