export default { data: { x: true }, html: '', test ( assert, component, target ) { let canvas = target.querySelector( 'canvas' ); assert.equal( canvas, component.refs.foo ); assert.equal( canvas.getAttribute( 'data-x' ), 'true' ); component.set({ x: false }); canvas = target.querySelector( 'canvas' ); assert.equal( canvas, component.refs.foo ); assert.equal( canvas.getAttribute( 'data-x' ), 'false' ); component.set({ x: true }); canvas = target.querySelector( 'canvas' ); assert.equal( canvas, component.refs.foo ); assert.equal( canvas.getAttribute( 'data-x' ), 'true' ); } };