import { getContrastRatio } from "@mui/material/styles";
import { getTheme } from "./theme";

// Contract tests for text/button pairs, not snapshots of particular brand hex values.
describe.each(["light", "dark"] as const)("%s semantic contrast", mode => {
  const palette = getTheme(mode).colorSchemes[mode].palette;
  test.each(["primary", "secondary", "success", "warning", "error", "info"])("%s supports text and filled actions", role => {
    const color = palette[role];
    for (const surface of [palette.background.default, palette.background.paper, palette.background.elevated ?? palette.background.paper]) {
      expect(getContrastRatio(color.main, surface)).toBeGreaterThanOrEqual(4.5);
    }
    for (const fill of [color.main, color.dark]) {
      expect(getContrastRatio(color.contrastText, fill)).toBeGreaterThanOrEqual(4.5);
    }
  });
  test("focus and essential control boundaries contrast with all application surfaces", () => {
    for (const surface of [palette.background.default, palette.background.paper, palette.background.elevated]) {
      expect(getContrastRatio(palette.focus.main, surface)).toBeGreaterThanOrEqual(3);
      expect(getContrastRatio(palette.border.default, surface)).toBeGreaterThanOrEqual(3);
    }
    expect(getContrastRatio(palette.focus.inverse, palette.navigation.background)).toBeGreaterThanOrEqual(3);
    expect(palette.action.selected).not.toBe(palette.action.hover);
  });
});