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test/parallel/test-stream-pipe-deadlock.js

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+'use strict';
+
+const common = require('../common');
+const { Readable, Writable } = require('stream');
+
+// https://github.com/nodejs/node/issues/48666
+(async () => {
+  // Prepare src that is internally ended, with buffered data pending
+  const src = new Readable({ read() {} });
+  src.push(Buffer.alloc(100));
+  src.push(null);
+  src.pause();
+
+  // Give it time to settle
+  await new Promise((resolve) => setImmediate(resolve));
+
+  const dst = new Writable({
+    highWaterMark: 1000,
+    write(buf, enc, cb) {
+      process.nextTick(cb);
+    }
+  });
+
+  dst.write(Buffer.alloc(1000)); // Fill write buffer
+  dst.on('finish', common.mustCall());
+  src.pipe(dst);
+})().then(common.mustCall());