@0x/contracts-staking: Add getHyperParameters() to MixinHyperParameters.

contracts/staking/contracts/src/immutable/MixinHyperParameters.sol

@@ -40,6 +40,30 @@ contract MixinHyperParameters is
     // Denominator for cobb douglas alpha factor.
     uint256 internal cobbDouglasAlphaDenomintor = 2;
 
+    /// @dev Retrives all tuned values.
+    /// @return _epochDurationInSeconds Minimum seconds between epochs.
+    /// @return _rewardDelegatedStakeWeight How much delegated stake is weighted vs operator stake, in ppm.
+    /// @return _minimumPoolStake Minimum amount of stake required in a pool to collect rewards.
+    /// @return _cobbDouglasAlphaNumerator Numerator for cobb douglas alpha factor.
+    /// @return _cobbDouglasAlphaDenomintor Denominator for cobb douglas alpha factor.
+    function getHyperParameters()
+        external
+        view
+        returns (
+            uint256 _epochDurationInSeconds,
+            uint32 _rewardDelegatedStakeWeight,
+            uint256 _minimumPoolStake,
+            uint256 _cobbDouglasAlphaNumerator,
+            uint256 _cobbDouglasAlphaDenomintor
+        )
+    {
+        _epochDurationInSeconds = epochDurationInSeconds;
+        _rewardDelegatedStakeWeight = rewardDelegatedStakeWeight;
+        _minimumPoolStake = minimumPoolStake;
+        _cobbDouglasAlphaNumerator = cobbDouglasAlphaNumerator;
+        _cobbDouglasAlphaDenomintor = cobbDouglasAlphaDenomintor;
+    }
+
     /// @dev Set all hyperparameters at once.
     /// @param _epochDurationInSeconds Minimum seconds between epochs.
     /// @param _rewardDelegatedStakeWeight How much delegated stake is weighted vs operator stake, in ppm.

contracts/staking/contracts/test/TestCobbDouglas.sol

@@ -18,27 +18,11 @@
 pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
-import "../src/Staking.sol";
+import "../src/fees/MixinExchangeFees.sol";
 
 
 contract TestCobbDouglas is
-    IStaking,
-    IStakingEvents,
-    MixinConstants,
-    Ownable,
-    MixinStorage,
-    MixinHyperParameters,
-    MixinZrxVault,
-    MixinExchangeManager,
-    MixinStakingPoolRewardVault,
-    MixinScheduler,
-    MixinStakeStorage,
-    MixinStakeBalances,
-    MixinStakingPoolRewards,
-    MixinStake,
-    MixinStakingPool,
-    MixinExchangeFees,
-    Staking
+    MixinExchangeFees
 {
     function cobbDouglas(
         uint256 totalRewards,
@@ -63,13 +47,4 @@ contract TestCobbDouglas is
             alphaDenominator
         );
     }
-
-    function getCobbDouglasAlpha()
-        external
-        view
-        returns (uint256 numerator, uint256 denominator)
-    {
-        numerator = cobbDouglasAlphaNumerator;
-        denominator = cobbDouglasAlphaDenomintor;
-    }
 }