Remove pragma experimental v0.5.0 and use staticcall is assembly

2 files changed, 16 insertions, 1 deletions

diff --git a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol
index 3845b7b9e..e1a610469 100644
--- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol
+++ b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol
@@ -17,7 +17,6 @@
 */
 
 pragma solidity 0.4.24;
-pragma experimental "v0.5.0";
 
 import "../../protocol/Exchange/MixinSignatureValidator.sol";
 import "../../protocol/Exchange/MixinTransactions.sol";
diff --git a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol
index be24e2f37..5a9581f51 100644
--- a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol
+++ b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol
@@ -18,6 +18,8 @@
 
 pragma solidity 0.4.24;
 
+import "../../tokens/ERC20Token/IERC20Token.sol";
+
 
 contract TestStaticCall {
 
@@ -55,6 +57,20 @@ contract TestStaticCall {
         return true;
     }
 
+    /// @dev Approves an ERC20 token to spend tokens from this address.
+    /// @param token Address of ERC20 token.
+    /// @param spender Address that will spend tokens.
+    /// @param value Amount of tokens spender is approved to spend.
+    function approveERC20(
+        address token,
+        address spender,
+        uint256 value
+    )
+        external
+    {
+        IERC20Token(token).approve(spender, value);
+    }
+
     /// @dev Increments state variable.
     function updateState()
         internal