I am trying to assert that a component has a certain style in one of my tests. In the browser this component has the correct style but when I run my vitest test I get an incorrect style. It looks like default style applied to the TextField component.

import React from "react";
import { StyledTextField } from "../src/App";
import { expect, test } from "vitest";
import { render, screen } from "@testing-library/react";

test("regular field has regular padding", () => {
  render(<StyledTextField placeholder="Type some text" />);

  expect(screen.getByPlaceholderText("Type some text")).toHaveStyle({
    padding: "2px 12px",
  });
});

import styled from "@emotion/styled";
import { TextField } from "@mui/material";

export const StyledTextField = styled(TextField)`
  & .MuiOutlinedInput-root {
    & .MuiOutlinedInput-input {
      padding: 2px 12px;
    }
  }
`;

function App() {
  return <StyledTextField />;
}

export default App;

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 FAIL  test/App.test.tsx > regular field has regular padding
Error: expect(element).toHaveStyle()

- Expected
+ Received

- padding: 2px 12px;
+ padding: 16.5px 14px;
 ❯ test/App.test.tsx:9:57
      7|   render(<StyledTextField placeholder="Type some text" />);
      8| 
      9|   expect(screen.getByPlaceholderText("Type some text")).toHaveStyle({
       |                                                         ^
     10|     padding: "2px 12px",
     11|   });

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 Test Files  1 failed (1)
      Tests  1 failed (1)
   Start at  16:02:45
   Duration  1.80s (transform 66ms, setup 99ms, collect 859ms, tests 134ms, environment 420ms, prepare 72ms)

 FAIL  Tests failed. Watching for file changes...
       press h to show help, press q to quit

Below is a codesandbox link if you would like to try it out. Try dev 5173 to view the field and confirm that the padding: 2px 12px. Run the test and the padding is: padding: 16.5px 14px

Can someone help me understand whats going on here and even better provide a solution?

Thanks