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║     COMPREHENSIVE PAYOFF CALCULATION TEST SUITE (FULL PDF IMPLEMENTATION)     ║
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┌─────────────────────────────────────────────────────────────────────────────┐
│ TEST 1: EXACT PDF EXAMPLE (TSH 6,397,076.07 loan)                          │
└─────────────────────────────────────────────────────────────────────────────┘

❌ PDF Example Test Failed: A facade root has not been set.

┌─────────────────────────────────────────────────────────────────────────────┐
│ TEST 2: EDGE CASES                                                         │
└─────────────────────────────────────────────────────────────────────────────┘

   Testing: Zero Interest Loan
   ✗ Failed: A facade root has not been set.

   Testing: First Payment
   ✗ Failed: A facade root has not been set.

   Testing: Last Payment
   ✗ Failed: A facade root has not been set.

   Testing: High Interest
   ✗ Failed: A facade root has not been set.

┌─────────────────────────────────────────────────────────────────────────────┐
│ TEST 3: VARIOUS REAL-WORLD SCENARIOS                                       │
└─────────────────────────────────────────────────────────────────────────────┘

   Small Personal Loan:
   └─ ❌ Failed: A facade root has not been set.

   Medium Business Loan:
   └─ ❌ Failed: A facade root has not been set.

   Large Mortgage:
   └─ ❌ Failed: A facade root has not been set.

┌─────────────────────────────────────────────────────────────────────────────┐
│ TEST 4: VALIDATION TESTS                                                   │
└─────────────────────────────────────────────────────────────────────────────┘

   Testing: Invalid EMI (zero)
   ✓ Failed correctly: A facade root has not been set.

   Testing: BA > IB (invalid)
   ✓ Failed correctly: A facade root has not been set.

   Testing: Negative Interest Rate
   ✓ Failed correctly: A facade root has not been set.

   Testing: Valid Input
   ✗ Should have passed but failed: A facade root has not been set.

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║                              TEST SUMMARY                                     ║
╚══════════════════════════════════════════════════════════════════════════════╝

   ❌ Pdf example                                        FAILED
   ❌ Edge zero interest loan                            FAILED
   ❌ Edge first payment                                 FAILED
   ❌ Edge last payment                                  FAILED
   ❌ Edge high interest                                 FAILED
   ❌ Scenario small personal loan                       FAILED
   ❌ Scenario medium business loan                      FAILED
   ❌ Scenario large mortgage                            FAILED
   ✅ Validation invalid emi (zero)                      PASSED
   ✅ Validation ba > ib (invalid)                       PASSED
   ✅ Validation negative interest rate                  PASSED
   ❌ Validation valid input                             FAILED

═══════════════════════════════════════════════════════════════════════════════
   TOTAL: 12 tests | PASSED: 3 | FAILED: 9 | SUCCESS RATE: 25%
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⚠️  Some tests failed. Please review the implementation.