chore: add checkpoint at transmit_emissions

contracts/RootGaugeFactory.vy

@@ -6,7 +6,7 @@
 @custom:version 1.0.1
 """
 
-version: public(constant(String[8])) = "1.0.1"
+version: public(constant(String[8])) = "1.0.2"
 
 
 interface Bridger:
@@ -16,6 +16,7 @@ interface RootGauge:
     def bridger() -> Bridger: view
     def initialize(_bridger: Bridger, _chain_id: uint256, _child: address): nonpayable
     def transmit_emissions(): nonpayable
+    def user_checkpoint(_user: address) -> bool: nonpayable
 
 interface CallProxy:
     def anyCall(
@@ -72,17 +73,19 @@ def __init__(_call_proxy: CallProxy, _owner: address):
 
 
 @external
-def transmit_emissions(_gauge: RootGauge):
+def transmit_emissions(_gauge: RootGauge, _checkpoint: bool=False):
     """
     @notice Call `transmit_emissions` on a root gauge
-    @dev Entrypoint for anycall to request emissions for a child gauge.
+    @dev Entrypoint to request emissions for a child gauge.
         The way that gauges work, this can also be called on the root
         chain without a request.
     """
     # in most cases this will return True
     # for special bridges *cough cough Multichain, we can only do
     # one bridge per tx, therefore this will verify msg.sender in [tx.origin, self.call_proxy]
     assert _gauge.bridger().check(msg.sender)
+    if _checkpoint:
+        _gauge.user_checkpoint(empty(address))
     _gauge.transmit_emissions()
 
 

tests/root_gauge_factory/test_root_gauge_deploy.py

@@ -47,6 +47,10 @@ def test_transmit_emissions(alice, root_gauge_factory):
 def transmit_emissions():
     pass
 
+@external
+def user_checkpoint(_user: address) -> bool:
+    return True
+
 @view
 @external
 def bridger() -> address:
@@ -62,6 +66,11 @@ def check(_addr: address) -> bool:
 
     assert tx.subcalls[2]["function"] == "transmit_emissions()"
 
+    tx = root_gauge_factory.transmit_emissions(mock, True, {"from": alice})
+
+    assert tx.subcalls[2]["function"] == "user_checkpoint(address)"
+    assert tx.subcalls[3]["function"] == "transmit_emissions()"
+
 
 def test_deploy_gauge(alice, chain, root_gauge_factory, child_gauge_factory, mock_bridger):
     tx = root_gauge_factory.deploy_child_gauge(chain.id, ETH_ADDRESS, 0x0, {"from": alice})