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Add test for warning for camelCased unknown props #10612

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Add test for warning for camelCased unknown props #10612

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15 changes: 15 additions & 0 deletions src/renderers/dom/shared/__tests__/ReactDOMAttribute-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -133,5 +133,20 @@ describe('ReactDOM unknown attribute', () => {
);
expectDev(console.error.calls.count()).toBe(1);
});

it('removes camelCased unknown props and warns', () => {
spyOn(console, 'error');

var el = document.createElement('div');
ReactDOM.render(<div hELLo="something" />, el);
expect(el.firstChild.hasAttribute('hELLo')).toBe(false);
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Even if we add this warning I don't think we plan to strip them. Rather, we'll warn but leave them in the DOM.

expect(el.firstChild.hasAttribute('hello')).toBe(false);

expectDev(normalizeCodeLocInfo(console.error.calls.argsFor(0)[0])).toBe(
'Warning: Invalid prop `hELLo` on <div> tag. Did you mean `hello`?' +
' in div (at **)',
);
expectDev(console.error.calls.count()).toBe(1);
});
});
});