Add crypto.getRandomValues() (#2327)

1 files changed, 51 insertions, 0 deletions

diff --git a/js/get_random_values_test.ts b/js/get_random_values_test.ts
new file mode 100644
index 000000000..68c13d597
--- /dev/null
+++ b/js/get_random_values_test.ts
@@ -0,0 +1,51 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test, assertNotEquals, assertStrictEq } from "./test_util.ts";
+
+test(function getRandomValuesInt8Array(): void {
+  const arr = new Int8Array(32);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Int8Array(32));
+});
+
+test(function getRandomValuesUint8Array(): void {
+  const arr = new Uint8Array(32);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Uint8Array(32));
+});
+
+test(function getRandomValuesUint8ClampedArray(): void {
+  const arr = new Uint8ClampedArray(32);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Uint8ClampedArray(32));
+});
+
+test(function getRandomValuesInt16Array(): void {
+  const arr = new Int16Array(4);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Int16Array(4));
+});
+
+test(function getRandomValuesUint16Array(): void {
+  const arr = new Uint16Array(4);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Uint16Array(4));
+});
+
+test(function getRandomValuesInt32Array(): void {
+  const arr = new Int32Array(8);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Int32Array(8));
+});
+
+test(function getRandomValuesUint32Array(): void {
+  const arr = new Uint32Array(8);
+  crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Uint32Array(8));
+});
+
+test(function getRandomValuesReturnValue(): void {
+  const arr = new Uint32Array(8);
+  const rtn = crypto.getRandomValues(arr);
+  assertNotEquals(arr, new Uint32Array(8));
+  assertStrictEq(rtn, arr);
+});