feat: test interface

Author: zacksfF

test/interfaces/IPackageRegistry.t.sol

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "forge-std/Test.sol";
+import "../../src/interfaces/IPackageRegistry.sol";
+
+contract MockPackageRegistry is IPackageRegistry {
+    mapping(bytes32 => string) private packages;
+    
+    function publish(string calldata name, string calldata version, string calldata manifestURI) external {
+        bytes32 key = keccak256(abi.encodePacked(name, version));
+        packages[key] = manifestURI;
+    }
+    
+    function getPackageURI(string calldata name, string calldata version) external view returns (string memory) {
+        bytes32 key = keccak256(abi.encodePacked(name, version));
+        return packages[key];
+    }
+    
+    function packageExists(string calldata name, string calldata version) external view returns (bool) {
+        bytes32 key = keccak256(abi.encodePacked(name, version));
+        return bytes(packages[key]).length > 0;
+    }
+}
+
+contract IPackageRegistryTest is Test {
+    MockPackageRegistry registry;
+    
+    function setUp() public {
+        registry = new MockPackageRegistry();
+    }
+    
+    function testPublishPackage() public {
+        registry.publish("safe-math-lib", "1.0.0", "ipfs://QmTest123");
+        assertTrue(registry.packageExists("safe-math-lib", "1.0.0"));
+    }
+    
+    function testGetPackageURI() public {
+        string memory manifestURI = "ipfs://QmTest123";
+        registry.publish("wallet", "2.1.0", manifestURI);
+        
+        assertEq(registry.getPackageURI("wallet", "2.1.0"), manifestURI);
+    }
+    
+    function testPackageNotExists() public {
+        assertFalse(registry.packageExists("nonexistent", "1.0.0"));
+    }
+}