diff --git a/debug/ast.json b/debug/ast.json
index d67aa72..505760c 100644
--- a/debug/ast.json
+++ b/debug/ast.json
@@ -7,13 +7,29 @@
                 "expr": {
                     "type": "InfixExpression",
                     "left_node": {
-                        "type": "IntegerLiteral",
-                        "value": 5
+                        "type": "InfixExpression",
+                        "left_node": {
+                            "type": "InfixExpression",
+                            "left_node": {
+                                "type": "IntegerLiteral",
+                                "value": 5
+                            },
+                            "operator": "+",
+                            "right_node": {
+                                "type": "IntegerLiteral",
+                                "value": 5
+                            }
+                        },
+                        "operator": "*",
+                        "right_node": {
+                            "type": "IntegerLiteral",
+                            "value": 3
+                        }
                     },
                     "operator": "+",
                     "right_node": {
                         "type": "IntegerLiteral",
-                        "value": 5
+                        "value": 2
                     }
                 }
             }
diff --git a/tests/parser.pla b/tests/parser.pla
index a4c9114..7da8b56 100644
--- a/tests/parser.pla
+++ b/tests/parser.pla
@@ -1 +1 @@
-5 + 5
\ No newline at end of file
+(5 + 5) * 3 + 2
\ No newline at end of file
diff --git a/tests/types.pla b/tests/types.pla
index 0b29969..bc1a140 100644
--- a/tests/types.pla
+++ b/tests/types.pla
@@ -8,7 +8,8 @@ enum Gender {
 struct Person {
 	name: String,
 	age: Int = 0,
-	speak: Func
+	speak: Func,
+	gender: Gender
 }
 
 speak = Func(sentence: String): Nil {
diff --git a/tests/variables.pla b/tests/variables.pla
index b43cc42..cfcbef7 100644
--- a/tests/variables.pla
+++ b/tests/variables.pla
@@ -1,4 +1,5 @@
 depend "string.pla"
+depend "io.h"
 
 myInt: Int = 123
 myDecimal: Float = 0.456