fix: fix test for Button

Author: ElenaBitire

src/ui/button.test.tsx

@@ -82,7 +82,8 @@ describe('Button component ', () => {
     render(<Button testID="button" size="lg" />);
     const button = screen.getByTestId('button');
     // TODO: should be fixed to use haveStyle instead of comparing the class name
-    const expectedStyle = 'font-[600] font-jakarta text-white text-xl';
+    const expectedStyle =
+      'font-[600] font-jakarta text-white dark:text-black text-xl';
     const receivedStyle =
       button.props.children[0].props.children.props.className;
     expect(receivedStyle).toContain(expectedStyle);