1 files changed, 32 insertions, 0 deletions
diff --git a/tests/features/test_const_def.zc b/tests/features/test_const_def.zc
new file mode 100644
index 0000000..b104196
--- /dev/null
+++ b/tests/features/test_const_def.zc
@@ -0,0 +1,32 @@
+
+test "def_constants" {
+    def PI = 3.14159;
+    def MAX = 100;
+    
+    assert(MAX == 100, "def constant value mismatch");
+    // PI check (float) - exact match might be tricky but 3.14159 is literal
+    
+    var x = MAX; 
+    assert(x == 100, "Assign from def");
+}
+
+test "def_scoping" {
+    def VAL = 1;
+    {
+        def VAL = 2; // Shadowing
+        assert(VAL == 2, "Shadowed def");
+    }
+    assert(VAL == 1, "Original def preserved");
+}
+
+test "const_type_qualifier" {
+    var x: const int = 10;
+    assert(x == 10, "const Var init");
+    
+    // Address of const var should be allowed
+    var p: const int* = &x; 
+    assert(*p == 10, "Pointer to const var");
+}
+
+// Note: Negative tests (compilation failures) are hard to test in this harness currently
+// but we verified the logic in parser_expr.c