fixed test

main/commons/src/test/java/org/cryptomator/common/vaults/VaultModuleTest.java

@@ -3,7 +3,6 @@ package org.cryptomator.common.vaults;
 import javafx.beans.binding.StringBinding;
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleObjectProperty;
-import javafx.beans.property.SimpleStringProperty;
 import org.cryptomator.common.settings.Settings;
 import org.cryptomator.common.settings.VaultSettings;
 import org.cryptomator.common.settings.VolumeImpl;
@@ -28,7 +27,12 @@ public class VaultModuleTest {
 
 	@BeforeEach
 	public void setup(@TempDir Path tmpDir) {
-		Mockito.when(vaultSettings.displayName()).thenReturn(new SimpleStringProperty("TEST"));
+		Mockito.when(vaultSettings.mountName()).thenReturn(new StringBinding() {
+			@Override
+			protected String computeValue() {
+				return "TEST";
+			}
+		});
 		Mockito.when(vaultSettings.usesReadOnlyMode()).thenReturn(new SimpleBooleanProperty(true));
 		System.setProperty("user.home", tmpDir.toString());
 	}