Update r1cs-std tests

r1cs-std/src/bits/boolean.rs

@@ -736,7 +736,7 @@ mod test {
     use super::{AllocatedBit, Boolean};
     use crate::{
         test_constraint_system::TestConstraintSystem,
-        utils::{AllocGadget, ConditionalEqGadget, EqGadget, ToBytesGadget},
+        prelude::*
     };
     use algebra::{fields::bls12_381::Fr, BitIterator, Field, PrimeField};
     use rand::{Rand, SeedableRng, XorShiftRng};

r1cs-std/src/bits/uint8.rs

@@ -292,9 +292,7 @@ impl AllocGadget for UInt8 {
 #[cfg(test)]
 mod test {
     use super::UInt8;
-    use crate::{
-        bits::boolean::Boolean, test_constraint_system::TestConstraintSystem, utils::AllocGadget,
-    };
+    use crate::{prelude::*, test_constraint_system::TestConstraintSystem};
     use algebra::fields::bls12_381::Fr;
     use rand::{Rng, SeedableRng, XorShiftRng};
     use r1cs_core::ConstraintSystem;

r1cs-std/src/fields/mod.rs

@@ -215,10 +215,7 @@ pub trait FieldGadget:
 mod test {
     use rand::{self, thread_rng, Rand, SeedableRng, XorShiftRng};
 
-    use super::FieldGadget;
-    use crate::{
-        bits::boolean::Boolean, test_constraint_system::TestConstraintSystem, utils::AllocGadget,
-    };
+    use crate::{prelude::*, test_constraint_system::TestConstraintSystem};
     use algebra::{fields::Field, BitIterator};
     use r1cs_core::ConstraintSystem;
 

r1cs-std/src/groups/curves/short_weierstrass/bls12/bls12_377.rs

@@ -12,16 +12,10 @@ pub type G2PreparedGadget = Bls12G2PreparedGadget;
 
 #[cfg(test)]
 mod test {
-    use crate::fields::FieldGadget;
     use rand;
 
     use super::{G1Gadget, G2Gadget};
-    use crate::{
-        boolean::Boolean,
-        groups::GroupGadget,
-        test_constraint_system::TestConstraintSystem,
-        utils::{AllocGadget, CondSelectGadget, EqGadget},
-    };
+    use crate::{test_constraint_system::TestConstraintSystem, prelude::*};
     use algebra::{
         curves::bls12_377::{G1Projective as G1, G2Projective as G2},
         fields::bls12_377::Fr,

r1cs-std/src/groups/curves/twisted_edwards/test.rs

@@ -1,10 +1,6 @@
 use rand;
 
-use crate::{
-    boolean::Boolean,
-    groups::{test::group_test, GroupGadget},
-    utils::{AllocGadget, CondSelectGadget},
-};
+use crate::{prelude::*, groups::test::group_test};
 
 use algebra::{
     curves::{models::TEModelParameters, twisted_edwards_extended::GroupAffine as TEAffine},

r1cs-std/src/groups/mod.rs

@@ -146,7 +146,7 @@ mod test {
     use r1cs_core::ConstraintSystem;
 
     use crate::{
-        groups::GroupGadget, test_constraint_system::TestConstraintSystem, utils::AllocGadget,
+        prelude::*, test_constraint_system::TestConstraintSystem,
     };
     use algebra::groups::Group;
     use rand;

r1cs-std/src/lib.rs

@@ -64,6 +64,7 @@ pub mod prelude {
     pub use crate::alloc::*;
     pub use crate::fields::FieldGadget;
     pub use crate::groups::GroupGadget;
+    pub use crate::pairing::PairingGadget;
     pub use crate::bits::{ToBitsGadget, ToBytesGadget, boolean::Boolean, uint8::UInt8, uint32::UInt32};
 }
 

r1cs-std/src/pairing/mod.rs

@@ -58,7 +58,7 @@ pub trait PairingGadget {
 #[cfg(test)]
 mod test {
     // use rand;
-    use crate::{boolean::Boolean, test_constraint_system::TestConstraintSystem};
+    use crate::test_constraint_system::TestConstraintSystem;
     use algebra::{BitIterator, Field};
     use r1cs_core::ConstraintSystem;
 
@@ -71,10 +71,8 @@ mod test {
 
         use super::bls12_377::PairingGadget;
         use crate::{
-            fields::FieldGadget,
             groups::bls12::bls12_377::{G1Gadget, G1PreparedGadget, G2Gadget, G2PreparedGadget},
-            pairing::PairingGadget as _,
-            utils::{AllocGadget, EqGadget},
+            prelude::*, pairing::PairingGadget as _,
         };
         use algebra::curves::bls12_377::{Bls12_377, G1Projective, G2Projective};
         use std::ops::Mul;