@0x:contracts-exchange Added tests for matchOrders protocol fees

contracts/exchange/contracts/test/TestProtocolFeesReceiver.sol

@@ -68,11 +68,13 @@ contract TestProtocolFeesReceiver {
             shouldSetProtocolFeeCollector
         );
 
-       // Forward all of the value sent to the contract to `fillOrder()` with empty arguments.
+        // Construct an of order with distinguishing information.
         LibOrder.Order memory order;
         order.makerAddress = makerAddress1;
         order.makerAssetAmount = 1;
         order.takerAssetAmount = 1;
+
+        // Forward all of the value sent to the contract to `fillOrder()`.
         testProtocolFees.fillOrder.value(msg.value)(order, 0, new bytes(0));
 
         // Ensure that the results of the test were correct.
@@ -82,6 +84,43 @@ contract TestProtocolFeesReceiver {
         clearState(testProtocolFees);
     }
 
+    function testMatchOrdersProtocolFees(
+        TestProtocolFees testProtocolFees,
+        uint256 protocolFeeMultiplier,
+        bool shouldSetProtocolFeeCollector
+    )
+        external
+        payable
+    {
+        // Set up the exchange state for the test.
+        setExchangeState(
+            testProtocolFees,
+            protocolFeeMultiplier,
+            shouldSetProtocolFeeCollector
+        );
+
+        // Construct a pair of orders with distinguishing information.
+        LibOrder.Order memory leftOrder;
+        leftOrder.makerAddress = makerAddress1;
+        leftOrder.makerAssetAmount = 1;
+        leftOrder.takerAssetAmount = 1;
+        LibOrder.Order memory rightOrder;
+        rightOrder.makerAddress = makerAddress2;
+        rightOrder.makerAssetAmount = 1;
+        rightOrder.takerAssetAmount = 1;
+
+       // Forward all of the value sent to the contract to `matchOrders()`.
+       testProtocolFees.matchOrders.value(msg.value)(leftOrder, rightOrder, new bytes(0), new bytes(0));
+
+       // Ensure that the results of the test were correct.
+       verifyMatchOrdersTestResults(protocolFeeMultiplier, shouldSetProtocolFeeCollector);
+
+       // Clear all state that was set to ensure that future tests are unaffected by this one.
+       clearState(testProtocolFees);
+    }
+
+    /* Verification Functions */
+
     function verifyFillOrderTestResults(
         uint256 protocolFeeMultiplier,
         bool shouldSetProtocolFeeCollector
@@ -108,7 +147,7 @@ contract TestProtocolFeesReceiver {
                     "Incorrect eth was received during fillOrder test when adequate ETH was sent"
                 );
             } else {
-                // Ensure that the protocolFee was forwarded to this contract.
+                // Ensure that no ether was forwarded to this contract.
                 require(
                     log.loggedValue == 0,
                     "Incorrect eth was received during fillOrder test when inadequate ETH was sent"
@@ -125,6 +164,55 @@ contract TestProtocolFeesReceiver {
         }
     }
 
+    function verifyMatchOrdersTestResults(
+        uint256 protocolFeeMultiplier,
+        bool shouldSetProtocolFeeCollector
+    )
+        internal
+    {
+        // If the `protocolFeeCollector` was set, then this contract should have been called.
+        if (shouldSetProtocolFeeCollector) {
+            // Calculate the protocol fee that should be paid.
+            uint256 protocolFee = tx.gasprice.safeMul(protocolFeeMultiplier);
+
+            // Ensure that one TestLog was recorded.
+            require(testLogs.length == 2, "Incorrect TestLog length for matchOrders test");
+
+            // Get an alias to the test logs.
+            TestLog memory log1 = testLogs[0];
+            TestLog memory log2 = testLogs[1];
+
+            // If the forwarded value was greater than the protocol fee, the protocol fee should
+            // have been sent back to this contract.
+            if (msg.value >= 2 * protocolFee) {
+                // Ensure that the protocolFee was forwarded to this contract.
+                require(
+                    log1.loggedValue == protocolFee && log2.loggedValue == protocolFee,
+                    "Incorrect eth was received during matchOrders test when adequate ETH was sent"
+                );
+            } else {
+                // Ensure that no ether was forwarded to this contract.
+                require(
+                    log1.loggedValue == 0 && log2.loggedValue == 0,
+                    "Incorrect eth was received during fillOrder test when inadequate ETH was sent"
+                );
+            }
+
+            // Ensure that the correct data was logged during this test.
+            require(log1.loggedMaker == makerAddress1, "Incorrect maker address was logged for matchOrders test");
+            require(log1.loggedPayer == address(this), "Incorrect taker address was logged for matchOrders test");
+            require(log1.loggedProtocolFeePaid == protocolFee, "Incorrect protocol fee was logged for matchOrders test");
+            require(log2.loggedMaker == makerAddress2, "Incorrect maker address was logged for matchOrders test");
+            require(log2.loggedPayer == address(this), "Incorrect taker address was logged for matchOrders test");
+            require(log2.loggedProtocolFeePaid == protocolFee, "Incorrect protocol fee was logged for matchOrders test");
+        } else {
+            // Ensure that `protocolFeePaid()` was not called.
+            require(testLogs.length == 0, "protocolFeePaid was called");
+        }
+    }
+
+    /* State setup and teardown functions */
+
     function setExchangeState(
         TestProtocolFees testProtocolFees,
         uint256 protocolFeeMultiplier,

contracts/exchange/test/protocol_fees.ts

@@ -3,7 +3,7 @@ import { BigNumber } from '@0x/utils';
 
 import { artifacts, TestProtocolFeesContract, TestProtocolFeesReceiverContract } from '../src';
 
-blockchainTests('Protocol Fee Payments', env => {
+blockchainTests.only('Protocol Fee Payments', env => {
     let testProtocolFees: TestProtocolFeesContract;
     let testProtocolFeesReceiver: TestProtocolFeesReceiverContract;
 
@@ -75,4 +75,54 @@ blockchainTests('Protocol Fee Payments', env => {
             );
         });
     });
+
+    blockchainTests.resets('matchOrders Protocol Fees', () => {
+        it('should not pay protocol fee when there is no registered protocol fee collector', async () => {
+            await testProtocolFeesReceiver.testMatchOrdersProtocolFees.awaitTransactionSuccessAsync(
+                testProtocolFees.address,
+                DEFAULT_PROTOCOL_FEE_MULTIPLIER,
+                false,
+                {
+                    gasPrice: DEFAULT_GAS_PRICE,
+                    value: DEFAULT_PROTOCOL_FEE,
+                },
+            );
+        });
+
+        it('should pay protocol fee in WETH when too little value is sent', async () => {
+            await testProtocolFeesReceiver.testMatchOrdersProtocolFees.awaitTransactionSuccessAsync(
+                testProtocolFees.address,
+                DEFAULT_PROTOCOL_FEE_MULTIPLIER,
+                true,
+                {
+                    gasPrice: DEFAULT_GAS_PRICE,
+                    value: DEFAULT_PROTOCOL_FEE.minus(new BigNumber(10)),
+                },
+            );
+        });
+
+        it('should pay protocol fee in ETH when the correct value is sent', async () => {
+            await testProtocolFeesReceiver.testMatchOrdersProtocolFees.awaitTransactionSuccessAsync(
+                testProtocolFees.address,
+                DEFAULT_PROTOCOL_FEE_MULTIPLIER,
+                true,
+                {
+                    gasPrice: DEFAULT_GAS_PRICE,
+                    value: DEFAULT_PROTOCOL_FEE,
+                },
+            );
+        });
+
+        it('should pay protocol fee in ETH when extra value is sent', async () => {
+            await testProtocolFeesReceiver.testMatchOrdersProtocolFees.awaitTransactionSuccessAsync(
+                testProtocolFees.address,
+                DEFAULT_PROTOCOL_FEE_MULTIPLIER,
+                true,
+                {
+                    gasPrice: DEFAULT_GAS_PRICE,
+                    value: DEFAULT_PROTOCOL_FEE.plus(new BigNumber(10)),
+                },
+            );
+        });
+    });
 });