1 files changed, 68 insertions, 0 deletions
diff --git a/std/node/_crypto/randomBytes_test.ts b/std/node/_crypto/randomBytes_test.ts
new file mode 100644
index 000000000..701127dce
--- /dev/null
+++ b/std/node/_crypto/randomBytes_test.ts
@@ -0,0 +1,68 @@
+import { assert, assertEquals, assertThrows } from "../../testing/asserts.ts";
+import randomBytes, { MAX_RANDOM_VALUES, MAX_SIZE } from "./randomBytes.ts";
+
+Deno.test("randomBytes sync works correctly", function () {
+  assertEquals(randomBytes(0).length, 0, "len: " + 0);
+  assertEquals(randomBytes(3).length, 3, "len: " + 3);
+  assertEquals(randomBytes(30).length, 30, "len: " + 30);
+  assertEquals(randomBytes(300).length, 300, "len: " + 300);
+  assertEquals(
+    randomBytes(17 + MAX_RANDOM_VALUES).length,
+    17 + MAX_RANDOM_VALUES,
+    "len: " + 17 + MAX_RANDOM_VALUES,
+  );
+  assertEquals(
+    randomBytes(MAX_RANDOM_VALUES * 100).length,
+    MAX_RANDOM_VALUES * 100,
+    "len: " + MAX_RANDOM_VALUES * 100,
+  );
+  assertThrows(() => randomBytes(MAX_SIZE + 1));
+  assertThrows(() => randomBytes(-1));
+});
+
+Deno.test("randomBytes async works correctly", function () {
+  randomBytes(0, function (err, resp) {
+    assert(!err);
+    assertEquals(resp?.length, 0, "len: " + 0);
+  });
+  randomBytes(3, function (err, resp) {
+    assert(!err);
+    assertEquals(resp?.length, 3, "len: " + 3);
+  });
+  randomBytes(30, function (err, resp) {
+    assert(!err);
+    assertEquals(resp?.length, 30, "len: " + 30);
+  });
+  randomBytes(300, function (err, resp) {
+    assert(!err);
+    assertEquals(resp?.length, 300, "len: " + 300);
+  });
+  randomBytes(17 + MAX_RANDOM_VALUES, function (err, resp) {
+    assert(!err);
+    assertEquals(
+      resp?.length,
+      17 + MAX_RANDOM_VALUES,
+      "len: " + 17 + MAX_RANDOM_VALUES,
+    );
+  });
+  randomBytes(MAX_RANDOM_VALUES * 100, function (err, resp) {
+    assert(!err);
+    assertEquals(
+      resp?.length,
+      MAX_RANDOM_VALUES * 100,
+      "len: " + MAX_RANDOM_VALUES * 100,
+    );
+  });
+  assertThrows(() =>
+    randomBytes(MAX_SIZE + 1, function (err) {
+      //Shouldn't throw async
+      assert(!err);
+    })
+  );
+  assertThrows(() =>
+    randomBytes(-1, function (err) {
+      //Shouldn't throw async
+      assert(!err);
+    })
+  );
+});