Shallow.debug() does not output a React.memo(React.forwardRef) SFC properly

[Dilatorily]

Current behavior

The .debug() method of a shallow() component that is wrapped in both memo and forwardRef, will return a Memo([Object object]) component.

This repository reproduces the issue.

Results

 enzyme
    ✓ debugs correctly with a shallow memo'ed SFC (7ms)
    ✓ debugs correctly with a shallow forwarded ref SFC (1ms)
    ✕ debugs correctly with a shallow memo'ed forwarded ref SFC (3ms)

  ● enzyme › debugs correctly with a shallow memo'ed forwarded ref SFC

    expect(received).toMatchInlineSnapshot(snapshot)

    Snapshot name: `enzyme debugs correctly with a shallow memo'ed forwarded ref SFC 1`

    - Snapshot
    + Received

      "<div>
    -   <Memo(ForwardRef) />
    +   <Memo([object Object]) />
      </div>"

      51 |     };
      52 |     expect(shallow(<Container />).debug())
    > 53 |       .toMatchInlineSnapshot(
         |        ^
      54 |     `
      55 |       "<div>
      56 |         <Memo(ForwardRef) />

      at Object.toMatchInlineSnapshot (index.spec.jsx:53:8)

 › 1 snapshot failed.

Expected behavior

The debug() method returns Memo(ForwardRef).

Your environment

API

• shallow
• mount
• render

Version

library	version
enzyme	3.10.0
react	16.8.6
react-dom	16.8.6
react-test-renderer	16.8.6
adapter (below)	1.14.0

Adapter

• enzyme-adapter-react-16
• enzyme-adapter-react-16.3
• enzyme-adapter-react-16.2
• enzyme-adapter-react-16.1
• enzyme-adapter-react-15
• enzyme-adapter-react-15.4
• enzyme-adapter-react-14
• enzyme-adapter-react-13
• enzyme-adapter-react-helper
• others ( )

[Izkata]

I'm also seeing the same thing without the extra "memo" wrapper, getting debug output like <[Object object] />. It appears to just be from forwardRef.

[ljharb]

This appears to be fixed, presumably by ddb0627 (which fixed #2146). When I update your repro repo to the latest enzyme and react adapter, everything passes.

[ljharb]

@Izkata if you're still having trouble on the latest version of everything, please file a new issue.