contains.md

.contains(nodeOrNodes) => Boolean

Returns whether or not the current wrapper has a node anywhere in it's render tree that looks like the one passed in.

Arguments

1. nodeOrNodes (ReactElement|Array<ReactElement>): The node or array of nodes whose presence you are detecting in the current instance's render tree.

Returns

Boolean: whether or not the current wrapper has a node anywhere in it's render tree that looks like the one passed in.

Example

const wrapper = mount(<MyComponent />);
expect(wrapper.contains(<div className="foo bar" />)).to.equal(true);

const wrapper = mount(
  <div>
    <span>Hello</span>
    <div>Goodbye</div>
    <span>Again</span>
  </div>
);

expect(wrapper.contains([
  <span>Hello</span>,
  <div>Goodbye</div>,
])).to.equal(true);

Common Gotchas

• .contains() expects a ReactElement, not a selector (like many other methods). Make sure that when you are calling it you are calling it with a ReactElement or a JSX expression.
• Keep in mind that this method determines equality based on the equality of the node's children as well.