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diff --git a/js/scripting-lang/tests/16_function_composition.txt b/js/scripting-lang/tests/16_function_composition.txt
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+/* Function Composition Test Suite */
+
+/* Test basic function definitions */
+double : x -> x * 2;
+add1 : x -> x + 1;
+square : x -> x * x;
+
+/* Test 1: Basic composition with compose */
+result1 : compose @double @add1 5;
+..out result1;
+
+/* Test 2: Multiple composition with compose */
+result2 : compose @double (compose @add1 @square) 3;
+..out result2;
+
+/* Test 3: Function references */
+ref1 : @double;
+..out ref1;
+
+/* Test 4: Function references in composition */
+result3 : compose @double @add1 5;
+..out result3;
+
+/* Test 5: Pipe function (binary) */
+result4 : pipe @double @add1 5;
+..out result4;
+
+/* Test 6: Compose function (binary) */
+result5 : compose @double @add1 2;
+..out result5;
+
+/* Test 7: Multiple composition with pipe */
+result6 : pipe @square (pipe @add1 @double) 2;
+..out result6;
+
+/* Test 8: Backward compatibility - arithmetic */
+x : 10;
+result7 : x + 5;
+..out result7;
+
+/* Test 9: Backward compatibility - function application */
+result8 : double x;
+..out result8;
+
+/* Test 10: Backward compatibility - nested application */
+result9 : double (add1 x);
+..out result9;
+
+/* Test 11: Backward compatibility - unary operators */
+result10 : -x;
+..out result10;
+
+/* Test 12: Backward compatibility - logical operators */
+result11 : not true;
+..out result11;
+
+/* Test 13: Complex composition chain */
+result12 : compose @square (compose @add1 (compose @double @add1)) 3;
+..out result12; 
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