Initial project import

tools/v/vlib/crypto/rand/utils_test.v

@@ -0,0 +1,23 @@
+import math.big
+import crypto.rand
+
+fn test_int_big() {
+	z := big.integer_from_int(0)
+	if _ := rand.int_big(z) {
+		assert false
+	} else {
+		assert true
+	}
+
+	n := big.integer_from_int(-1)
+	if _ := rand.int_big(n) {
+		assert false
+	} else {
+		assert true
+	}
+
+	m := big.integer_from_int(1).left_shift(128)
+	l := rand.int_big(m)! // actual large number
+	assert l < m
+	assert l > n
+}