Upload Kmake

test/parallel/test-stream-readable-add-chunk-during-data.js

@@ -0,0 +1,21 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const { Readable } = require('stream');
+
+// Verify that .push() and .unshift() can be called from 'data' listeners.
+
+for (const method of ['push', 'unshift']) {
+  const r = new Readable({ read() {} });
+  r.once('data', common.mustCall((chunk) => {
+    assert.strictEqual(r.readableLength, 0);
+    r[method](chunk);
+    assert.strictEqual(r.readableLength, chunk.length);
+
+    r.on('data', common.mustCall((chunk) => {
+      assert.strictEqual(chunk.toString(), 'Hello, world');
+    }));
+  }));
+
+  r.push('Hello, world');
+}