diff --git a/Package.swift b/Package.swift
index 5b4139f..6ac9fb5 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,6 +5,9 @@ import PackageDescription
 
 let package = Package(
     name: "rxcc",
+    platforms: [
+        .macOS(.v13)
+    ],
     targets: [
         // Targets are the basic building blocks of a package, defining a module or a test suite.
         // Targets can depend on other targets in this package and products from dependencies.
diff --git a/Sources/rxcc/rxcc.swift b/Sources/rxcc/rxcc.swift
index f13a325..25b0a68 100644
--- a/Sources/rxcc/rxcc.swift
+++ b/Sources/rxcc/rxcc.swift
@@ -234,7 +234,7 @@ func getTestFiles() -> [TestFile] {
     var testFiles: [TestFile] = [TestFile]()
 
     let fileManager = FileManager.default
-    let path = "c/tests/stage_1"
+    let path = "c/tests/stage_2"
 
     do {
         let validItems = try fileManager.contentsOfDirectory(atPath: path + "/valid")
@@ -358,6 +358,36 @@ func generateOutput(_ node: SyntaxTreeNode) -> String {
         text += " movl    $\(returnValue), %eax\n ret\n"
         break
 
+    case .UnaryOperation:
+        if node.children.count != 2 {
+            print("\(node.variant) must have two child nodes")
+        }
+        let operation: SyntaxTreeNode = node.children[0]
+        let expression: SyntaxTreeNode = node.children[1]
+
+
+        switch operation.variant {
+        case .BitwiseCompliment:
+            text += String(~Int(generateOutput(expression))!)
+            break
+
+        case .Negation:
+            text += String(-Int(generateOutput(expression))!)
+            break
+
+        case .LogicalNegation:
+            text += String(Int(generateOutput(expression))! == 0 ? "1" : "0")
+            break
+
+        default:
+            print("\(node.variant): Unknown unary operation \"\(operation.variant)\"")
+        }
+        break
+
+    case .Negation, .BitwiseCompliment, .LogicalNegation:
+        text += node.value
+        break
+
     case .LiteralInteger:
         text += node.value
         break