Change test_rng import to ark-std

ed_on_bls12_381/src/constraints/mod.rs

@@ -19,7 +19,7 @@
 //! let cs = ConstraintSystem::<Fq>::new_ref();
 //! // This rng is just for test purposes; do not use it
 //! // in real applications.
-//! let mut rng = ark_ff::test_rng();
+//! let mut rng = ark_std::test_rng();
 //!
 //! // Generate some random `Fq` elements.
 //! let a_native = Fq::rand(&mut rng);
@@ -66,7 +66,7 @@
 //! # use ark_ed_on_bls12_381::{*, constraints::*};
 //!
 //! # let cs = ConstraintSystem::<Fq>::new_ref();
-//! # let mut rng = ark_ff::test_rng();
+//! # let mut rng = ark_std::test_rng();
 //!
 //! // Generate some random `Edwards` elements.
 //! let a_native = EdwardsProjective::rand(&mut rng);

ed_on_bls12_381/src/curves/tests.rs

@@ -1,5 +1,6 @@
 use ark_ec::{AffineCurve, ProjectiveCurve};
-use ark_ff::{bytes::FromBytes, test_rng, Zero};
+use ark_ff::{bytes::FromBytes, Zero};
+use ark_std::test_rng;
 use core::str::FromStr;
 use rand::Rng;
 

ed_on_bls12_381/src/fields/tests.rs

@@ -3,8 +3,9 @@ use ark_ff::{
     biginteger::BigInteger256 as BigInteger,
     bytes::{FromBytes, ToBytes},
     fields::{Field, LegendreSymbol::*, SquareRootField},
-    test_rng, One, Zero,
+    One, Zero,
 };
+use ark_std::test_rng;
 
 use ark_curve_tests::fields::*;