Add upgrades component to contract (#65)

* Add upgrades component to contract

* Update to use snake_case in ERC20 govtoken instead of camelCase

* Fix totalSupply too

* Polish scarb fmt

* Add camel impls to tokens

This is because current CARM has camelCase only

* Revert "Fix totalSupply too"

This reverts commit ce535b1.

* Revert "Update to use snake_case in ERC20 govtoken instead of camelCase"

This reverts commit 399dcb8.

* Fix enable accidentally disabled test

src/contract.cairo

@@ -46,6 +46,9 @@ mod Governance {
     #[abi(embed_v0)]
     impl Proposals = proposals_component::ProposalsImpl<ContractState>;
 
+    #[abi(embed_v0)]
+    impl Upgrades = upgrades_component::UpgradesImpl<ContractState>;
+
     #[storage]
     struct Storage {
         proposal_initializer_run: LegacyMap::<u64, bool>,

src/token.cairo

@@ -1,4 +1,5 @@
 // This is a freely tradable ERC20 token.
+// TODO upgradability
 
 #[starknet::contract]
 mod FloatingToken {
@@ -12,6 +13,8 @@ mod FloatingToken {
     impl ERC20Impl = ERC20Component::ERC20Impl<ContractState>;
     #[abi(embed_v0)]
     impl ERC20MetadataImpl = ERC20Component::ERC20MetadataImpl<ContractState>;
+    #[abi(embed_v0)]
+    impl ERC20CamelOnlyImpl = ERC20Component::ERC20CamelOnlyImpl<ContractState>;
 
     impl InternalImpl = ERC20Component::InternalImpl<ContractState>;
 

src/voting_token.cairo

@@ -1,8 +1,9 @@
 // This is the locked Cairo token.
+// TODO upgradability
 
 #[starknet::contract]
 mod VotingToken {
-    use openzeppelin::token::erc20::interface::IERC20;
+    use openzeppelin::token::erc20::interface::{IERC20, IERC20CamelOnly};
     use openzeppelin::token::erc20::ERC20Component;
     use starknet::ContractAddress;
 
@@ -36,6 +37,27 @@ mod VotingToken {
         self.erc20._mint(recipient, fixed_supply);
     }
 
+    #[abi(embed_v0)]
+    impl VotingTokenCamelOnly of IERC20CamelOnly<ContractState> {
+        fn totalSupply(self: @ContractState) -> u256 {
+            self.erc20.total_supply()
+        }
+
+        fn balanceOf(self: @ContractState, account: ContractAddress) -> u256 {
+            self.erc20.balance_of(account)
+        }
+
+        fn transferFrom(
+            ref self: ContractState,
+            sender: ContractAddress,
+            recipient: ContractAddress,
+            amount: u256
+        ) -> bool {
+            assert(false, 'token locked, unwrap first');
+            false
+        }
+    }
+
     #[abi(embed_v0)]
     impl VotingToken of IERC20<ContractState> {
         fn total_supply(self: @ContractState) -> u256 {