1 files changed, 10 insertions, 0 deletions
diff --git a/src/qt/test/optiontests.cpp b/src/qt/test/optiontests.cpp
index 3bd0af19ad..17ffeb220b 100644
--- a/src/qt/test/optiontests.cpp
+++ b/src/qt/test/optiontests.cpp
@@ -4,6 +4,7 @@
 
 #include <init.h>
 #include <qt/bitcoin.h>
+#include <qt/guiutil.h>
 #include <qt/test/optiontests.h>
 #include <test/util/setup_common.h>
 #include <util/system.h>
@@ -122,3 +123,12 @@ void OptionTests::parametersInteraction()
     QVERIFY(!settings.contains("fListen"));
     gArgs.ClearPathCache();
 }
+
+void OptionTests::extractFilter()
+{
+    QString filter = QString("Partially Signed Transaction (Binary) (*.psbt)");
+    QCOMPARE(GUIUtil::ExtractFirstSuffixFromFilter(filter), "psbt");
+
+    filter = QString("Image (*.png *.jpg)");
+    QCOMPARE(GUIUtil::ExtractFirstSuffixFromFilter(filter), "png");
+}