diff --git a/packages/react-dom/src/__tests__/ReactDOMServerIntegrationNewContext-test.js b/packages/react-dom/src/__tests__/ReactDOMServerIntegrationNewContext-test.js index af9a6095e0a46..334ff0e2cbd2c 100644 --- a/packages/react-dom/src/__tests__/ReactDOMServerIntegrationNewContext-test.js +++ b/packages/react-dom/src/__tests__/ReactDOMServerIntegrationNewContext-test.js @@ -249,5 +249,38 @@ describe('ReactDOMServerIntegration', () => { expect(e.querySelector('#language2').textContent).toBe('sanskrit'); expect(e.querySelector('#language3').textContent).toBe('french'); }); + + it('does not pollute parallel node streams', () => { + const LoggedInUser = React.createContext(); + + const AppWithUser = user => ( + +
+ {whoAmI => whoAmI} +
+ +
+ ); + + const streamAmy = ReactDOMServer.renderToNodeStream( + AppWithUser('Amy'), + ).setEncoding('utf8'); + const streamBob = ReactDOMServer.renderToNodeStream( + AppWithUser('Bob'), + ).setEncoding('utf8'); + + // Testing by filling the buffer using internal _read() with a small + // number of bytes to avoid a test case which needs to align to a + // highWaterMark boundary of 2^14 chars. + streamAmy._read(20); + streamBob._read(20); + streamAmy._read(20); + streamBob._read(20); + + expect(streamAmy.read()).toBe('
Amy
'); + expect(streamBob.read()).toBe('
Bob
'); + }); }); });