sdfsdfs

node_modules/buffer/test/node/test-buffer-zero-fill-cli.js

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+'use strict';
+var Buffer = require('../../').Buffer;
+
+// Flags: --zero-fill-buffers
+
+// when using --zero-fill-buffers, every Buffer and SlowBuffer
+// instance must be zero filled upon creation
+
+
+var SlowBuffer = require('../../').SlowBuffer;
+var assert = require('assert');
+
+function isZeroFilled(buf) {
+  for (var n = 0; n < buf.length; n++)
+    if (buf[n] > 0) return false;
+  return true;
+}
+
+// This can be somewhat unreliable because the
+// allocated memory might just already happen to
+// contain all zeroes. The test is run multiple
+// times to improve the reliability.
+for (var i = 0; i < 50; i++) {
+  var bufs = [
+    Buffer.alloc(20),
+    Buffer.allocUnsafe(20),
+    SlowBuffer(20),
+    Buffer(20),
+    new SlowBuffer(20)
+  ];
+  for (var buf of bufs) {
+    assert(isZeroFilled(buf));
+  }
+}
+