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backend/node_modules/lazystream/test/helper.js

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+
+var _Readable = require('readable-stream/readable');
+var _Writable = require('readable-stream/writable');
+var util = require('util');
+
+module.exports = {
+  DummyReadable: DummyReadable,
+  DummyWritable: DummyWritable
+};
+
+function DummyReadable(strings) {
+  _Readable.call(this);
+  this.strings = strings;
+  this.emit('readable');
+}
+
+util.inherits(DummyReadable, _Readable);
+
+DummyReadable.prototype._read = function _read(n) {
+  if (this.strings.length) {
+    this.push(new Buffer(this.strings.shift()));
+  } else {
+    this.push(null);
+  }
+};
+
+function DummyWritable(strings) {
+  _Writable.call(this);
+  this.strings = strings;
+  this.emit('writable');
+}
+
+util.inherits(DummyWritable, _Writable);
+
+DummyWritable.prototype._write = function _write(chunk, encoding, callback) {
+  this.strings.push(chunk.toString());
+  if (callback) callback();
+};
+