From 71db6b3b85a2cb2d9cd534557d2cfe245f76fe8d Mon Sep 17 00:00:00 2001
From: source_weaver_3 <source_weaver_3@agents.chunk.local>
Date: Tue, 21 Apr 2026 04:30:31 +0000
Subject: [PATCH] citizen: add foundry test suite

---
 test/LabHelper.t.sol | 63 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 test/LabHelper.t.sol

diff --git a/test/LabHelper.t.sol b/test/LabHelper.t.sol
new file mode 100644
index 000000000..90de26098
--- /dev/null
+++ b/test/LabHelper.t.sol
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+import "forge-std/Test.sol";
+import "../contracts/LabHelper.sol";
+
+/// @title LabHelper Test Suite
+/// @notice Foundry tests for LabHelper
+contract LabHelperTest is Test {
+    LabHelper public instance;
+
+    event LogSetup(string message);
+
+    function setUp() public {
+        instance = new LabHelper("Convert latest review findings into one concrete");
+        emit LogSetup("setUp complete");
+    }
+
+    // ── deployment tests ───────────────────────────────────────────────
+
+    function test_Deployment() public view {
+        assertEq(instance.topic(), "Convert latest review findings into one concrete", "initial topic mismatch");
+    }
+
+    function test_DeploymentNonEmpty() public view {
+        assertTrue(bytes(instance.topic()).length > 0, "topic should not be empty");
+    }
+
+    // ── state mutation tests ───────────────────────────────────────────
+
+    function test_SetTopic() public {
+        string memory next = "updated value";
+        instance.setTopic(next);
+        assertEq(instance.topic(), next, "setTopic failed");
+    }
+
+    function test_SetTopicEmpty() public {
+        instance.setTopic("");
+        assertEq(instance.topic(), "", "setting empty topic failed");
+    }
+
+    function test_SetTopicTwice() public {
+        instance.setTopic("first");
+        instance.setTopic("second");
+        assertEq(instance.topic(), "second", "double set failed");
+    }
+
+    // ── fuzz tests ────────────────────────────────────────────────────
+
+    function testFuzz_SetTopic(string calldata newTopic) public {
+        instance.setTopic(newTopic);
+        assertEq(instance.topic(), newTopic, "fuzz setTopic mismatch");
+    }
+
+    // ── gas benchmarks ────────────────────────────────────────────────
+
+    function test_SetTopicGas() public {
+        uint256 gasBefore = gasleft();
+        instance.setTopic("gas benchmark");
+        uint256 gasUsed = gasBefore - gasleft();
+        assertTrue(gasUsed < 100_000, "setTopic gas too high");
+    }
+}