tor('#tooltip');
        assert.isTrue(isHidden(actualTooltip));

        MockInteractions.focus(target);
        assert.isFalse(isHidden(actualTooltip));

        var divRect = target.getBoundingClientRect();
        expect(divRect.width).to.be.equal(100);
        expect(divRect.height).to.be.equal(20);

        var contentRect = tooltip.getBoundingClientRect();
        expect(contentRect.width).to.be.equal(70);
        expect(contentRect.height).to.be.equal(30);

        // The target div width is 100, an