message: Mocked navigation button for testing
  Already added a mock hardware back button but this is a navigation button on Android in userland so needs to be testable
diff: @@ -64,10 +64,15 @@ jest.mock('navigation-react-native', () => {
  });
  }
  - const NavigationBar = ({ title, children, ...props }) => {
  + const NavigationBar = ({ navigationImage, title, onNavigationPress, children, ...props }) => {
  const Left = React.Children.toArray(children).find(({type}) => type === NavigationReactNative.LeftBar);
  return (
  <ReactNative.View accessibilityRole="toolbar" {...props}>
  + {!!navigationImage && (
  + <ReactNative.Pressable accessibilityRole="button" onPress={onNavigationPress}>
  + <ReactNative.Image source={navigationImage} />
  + </ReactNative.Pressable>
  + )}
  {!!title && (
  <ReactNative.Text accessibilityRole="header">{title}</ReactNative.Text>
  )}
  