@netdata/netdata-ui/dist/es6/mixins/opacity.test.js

netdata UI kit

import styledOpacity from "./opacity";
it("renders", function () {
  expect(styledOpacity({})).toBe("");
});
it("renders weak opacity", function () {
  expect(styledOpacity({
    opacity: "weak"
  })).toBe("opacity: 0.3;");
});
it("renders invalid opacity", function () {
  expect(styledOpacity({
    opacity: "invalid"
  })).toBe("opacity: invalid;");
});