Function assertStylesInclude

tests/inject_test.js:383–388

(str)

    });

    function assertStylesInclude(str) {
        const styleTags = global.document.getElementsByTagName("style");
        const styles = getSheetText(styleTags[0].sheet);

        assert.include(styles, str);
    }

    describe('fontFamily', () => {
        it('leaves plain strings alone', () => {