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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
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Diffstat (limited to 'node_modules/buffer/test/node/test-buffer-zero-fill-cli.js')
-rw-r--r--node_modules/buffer/test/node/test-buffer-zero-fill-cli.js35
1 files changed, 35 insertions, 0 deletions
diff --git a/node_modules/buffer/test/node/test-buffer-zero-fill-cli.js b/node_modules/buffer/test/node/test-buffer-zero-fill-cli.js
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+++ b/node_modules/buffer/test/node/test-buffer-zero-fill-cli.js
@@ -0,0 +1,35 @@
+'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));
+ }
+}
+