chore(tests): Moved priority queue tests from hardhat to foundry

l1-contracts/test/foundry/unit/concrete/PriorityQueue/OnEmptyQueue.sol

@@ -0,0 +1,22 @@
+pragma solidity 0.8.20;
+
+import {PriorityQueueSharedTest} from "./_PriorityQueue_Shared.t.sol";
+
+contract OnEmptyQueueTest is PriorityQueueSharedTest {
+    function test_gets() public {
+        assertEq(0, priorityQueue.getSize());
+        assertEq(0, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(0, priorityQueue.getTotalPriorityTxs());
+        assertTrue(priorityQueue.isEmpty());
+    }
+
+    function test_failGetFront() public {
+        vm.expectRevert(bytes.concat("D"));
+        priorityQueue.front();
+    }
+
+    function test_failPopFront() public {
+        vm.expectRevert(bytes.concat("s"));
+        priorityQueue.popFront();
+    }
+}

l1-contracts/test/foundry/unit/concrete/PriorityQueue/PopOperations.sol

@@ -0,0 +1,71 @@
+pragma solidity 0.8.20;
+
+import {PriorityQueueSharedTest} from "./_PriorityQueue_Shared.t.sol";
+import {PriorityOperation} from "../../../../../cache/solpp-generated-contracts/dev-contracts/test/PriorityQueueTest.sol";
+
+contract PopOperationsTest is PriorityQueueSharedTest {
+    uint public constant NUMBER_OPERATIONS = 10;
+
+    function setUp() public {
+        push_mock_entries(NUMBER_OPERATIONS);
+    }
+
+    function test_after_pop() public {
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getSize());
+
+        PriorityOperation memory front = priorityQueue.popFront();
+        assertEq(keccak256(abi.encode(0)), front.canonicalTxHash);
+        assertEq(uint64(0), front.expirationTimestamp);
+        assertEq(uint192(0), front.layer2Tip);
+
+        assertEq(NUMBER_OPERATIONS - 1, priorityQueue.getSize());
+        assertEq(1, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getTotalPriorityTxs());
+        assertFalse(priorityQueue.isEmpty());
+
+        // Ok - one more pop
+        PriorityOperation memory front2 = priorityQueue.popFront();
+        assertEq(keccak256(abi.encode(1)), front2.canonicalTxHash);
+        assertEq(uint64(1), front2.expirationTimestamp);
+        assertEq(uint192(1), front2.layer2Tip);
+
+        assertEq(NUMBER_OPERATIONS - 2, priorityQueue.getSize());
+        assertEq(2, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getTotalPriorityTxs());
+        assertFalse(priorityQueue.isEmpty());
+    }
+
+    function test_pop_until_limit() public {
+        for (uint i = 0; i < NUMBER_OPERATIONS; ++i) {
+            PriorityOperation memory front = priorityQueue.popFront();
+            assertEq(keccak256(abi.encode(i)), front.canonicalTxHash);
+        }
+
+        assertEq(0, priorityQueue.getSize());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getTotalPriorityTxs());
+        assertTrue(priorityQueue.isEmpty());
+
+        // And now let's push something.
+
+        PriorityOperation memory dummyOp = PriorityOperation({
+            canonicalTxHash: keccak256(abi.encode(300)),
+            expirationTimestamp: uint64(300),
+            layer2Tip: uint192(300)
+        });
+        priorityQueue.pushBack(dummyOp);
+
+        assertEq(1, priorityQueue.getSize());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(NUMBER_OPERATIONS + 1, priorityQueue.getTotalPriorityTxs());
+        assertFalse(priorityQueue.isEmpty());
+
+        PriorityOperation memory front_end = priorityQueue.popFront();
+        assertEq(keccak256(abi.encode(300)), front_end.canonicalTxHash);
+        assertTrue(priorityQueue.isEmpty());
+
+        // And now let's go over the limit and fail.
+        vm.expectRevert(bytes.concat("s"));
+        priorityQueue.popFront();
+    }
+}

l1-contracts/test/foundry/unit/concrete/PriorityQueue/PushOperations.sol

@@ -0,0 +1,25 @@
+pragma solidity 0.8.20;
+
+import {PriorityQueueSharedTest} from "./_PriorityQueue_Shared.t.sol";
+import {PriorityOperation} from "../../../../../cache/solpp-generated-contracts/dev-contracts/test/PriorityQueueTest.sol";
+
+contract PushOperationsTest is PriorityQueueSharedTest {
+    uint public constant NUMBER_OPERATIONS = 10;
+
+    function setUp() public {
+        push_mock_entries(NUMBER_OPERATIONS);
+    }
+
+    function test_front() public {
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getSize());
+        PriorityOperation memory front = priorityQueue.front();
+        assertEq(keccak256(abi.encode(0)), front.canonicalTxHash);
+        assertEq(uint64(0), front.expirationTimestamp);
+        assertEq(uint192(0), front.layer2Tip);
+        // This is 'front' and not popFront, so the amount should not change.
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getSize());
+        assertEq(0, priorityQueue.getFirstUnprocessedPriorityTx());
+        assertEq(NUMBER_OPERATIONS, priorityQueue.getTotalPriorityTxs());
+        assertFalse(priorityQueue.isEmpty());
+    }
+}

l1-contracts/test/foundry/unit/concrete/PriorityQueue/_PriorityQueue_Shared.t.sol

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.20;
+
+import {Test} from "forge-std/Test.sol";
+import {PriorityQueueTest} from "../../../../../cache/solpp-generated-contracts/dev-contracts/test/PriorityQueueTest.sol";
+import {PriorityOperation} from "../../../../../cache/solpp-generated-contracts/dev-contracts/test/PriorityQueueTest.sol";
+
+contract PriorityQueueSharedTest is Test {
+    PriorityQueueTest internal priorityQueue;
+
+    constructor() {
+        priorityQueue = new PriorityQueueTest();
+    }
+
+    // Pushes 'count' entries into the priority queue.
+    function push_mock_entries(uint count) public {
+        for (uint i = 0; i < count; ++i) {
+            PriorityOperation memory dummyOp = PriorityOperation({
+                canonicalTxHash: keccak256(abi.encode(i)),
+                expirationTimestamp: uint64(i),
+                layer2Tip: uint192(i)
+            });
+            priorityQueue.pushBack(dummyOp);
+        }
+    }
+}