#!/usr/bin/env python
"""NOT Gate: Structural Steering Test"""
from logos.mtl.interpreter import MTLInterpreter

mtl = MTLInterpreter()

print('=== NOT GATE: STRUCTURAL STEERING TEST ===')

# Case 1: N(A)[A,B] -> B (Match first, redirect to second)
print('\n[Case 1] N(5)[5, 10] -> Should return 10')
result = mtl.execute('(not [5] [5] [10])')
print(f'   Result: {result}')
assert result == 10, f'Expected 10, got {result}'
print('   ✅ PASS')

# Case 1b: No match returns first
print('\n[Case 1b] N(5)[7, 10] -> Should return 7 (no match)')
result = mtl.execute('(not [5] [7] [10])')
print(f'   Result: {result}')
assert result == 7, f'Expected 7, got {result}'
print('   ✅ PASS')

# Case 2: N(A)[B,C,A] -> B(C) (Match last, apply B to C)
print('\n[Case 2] N(5)[[2,2,2], [3,3,3], 5] -> Should return [6,6,6]')
result = mtl.execute('(not [5] (list 2 2 2) (list 3 3 3) [5])')
print(f'   Result: {result}')
assert result == [6,6,6], f'Expected [6,6,6], got {result}'
print('   ✅ PASS')

# Case 2b: Integer application
print('\n[Case 2b] N(7)[3, 4, 7] -> Should return 12 (3*4)')
result = mtl.execute('(not [7] 3 4 [7])')
print(f'   Result: {result}')
assert result == 12, f'Expected 12, got {result}'
print('   ✅ PASS')

print('\n=== ALL NOT GATE TESTS PASSED ===')