Function assertRule

scripts/ui-regression.test.mjs:23–28

(css, selector, property, value)

}

function assertRule(css, selector, property, value) {
  assert.ok(
    hasRule(css, selector, property, value),
    `期望 CSS 存在：${selector} { ${property}: ${value}; }`
  );
}

function assertNoRule(css, selector, property, value) {
  assert.ok(