2 files changed, 69 insertions, 0 deletions
diff --git a/tests/codegen/dedup_typedefs.zc b/tests/codegen/dedup_typedefs.zc
new file mode 100644
index 0000000..c6e8099
--- /dev/null
+++ b/tests/codegen/dedup_typedefs.zc
@@ -0,0 +1,18 @@
+struct Vec2f {
+    x: f32;
+    y: f32;
+}
+
+struct Node {
+    val: int;
+    next: Node*;
+}
+
+fn main() {
+    var v: Vec2f;
+    v.x = 1.0;
+    v.y = 2.0;
+
+    var n: Node;
+    n.val = 1;
+}
diff --git a/tests/run_codegen_tests.sh b/tests/run_codegen_tests.sh
new file mode 100755
index 0000000..179af52
--- /dev/null
+++ b/tests/run_codegen_tests.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# Codegen Verification Test Runner
+ZC="./zc"
+TEST_DIR="tests/codegen"
+PASSED=0
+FAILED=0
+
+if [ ! -f "$ZC" ]; then
+    echo "Error: zc binary not found."
+    exit 1
+fi
+
+echo "** Running Codegen Verification Tests **"
+
+# Test 1: Duplicate Typedefs
+TEST_NAME="dedup_typedefs.zc"
+echo -n "Testing $TEST_DIR/$TEST_NAME (Duplicate Typedefs)... "
+
+$ZC "$TEST_DIR/$TEST_NAME" --emit-c > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+    echo "FAIL (Compilation error)"
+    ((FAILED++))
+else
+    # Check out.c for duplicates
+    # We expect "typedef struct Vec2f Vec2f;" to appear exactly once
+    COUNT=$(grep -c "typedef struct Vec2f Vec2f;" out.c)
+    
+    if [ "$COUNT" -eq 1 ]; then
+        echo "PASS"
+        ((PASSED++))
+    else
+        echo "FAIL (Found $COUNT typedefs for Vec2f, expected 1)"
+        ((FAILED++))
+    fi
+fi
+
+# Cleanup
+rm -f out.c a.out
+
+echo "----------------------------------------"
+echo "Summary:"
+echo "-> Passed: $PASSED"
+echo "-> Failed: $FAILED"
+echo "----------------------------------------"
+
+if [ $FAILED -ne 0 ]; then
+    exit 1
+else
+    exit 0
+fi