=== Unit Test: SMS 320-character Reference Fallback ===

Test 1: Verify NotificationContentBuilder tracks last used reference
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✓ Has $lastUsedReference property
✓ $lastUsedReference initialized
✓ Has fetchVerseContent() method
✓ fetchVerseContent() sets $lastUsedReference
✓ fetchVerseContent() calls processVerseReferencePipeline()

Test 2: Verify SMS fallback uses $lastUsedReference (not string parsing)
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✓ Does NOT use strtok() for parsing
✓ Fallback uses $this->lastUsedReference

Test 3: Verify logging includes API reference
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✓ Log message includes 'API Reference:' field
✓ Log includes $this->lastUsedReference value

Test 4: Verify all study types use fetchVerseContent
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✓ getTopicalStudyContent() uses fetchVerseContent()
✓ getReferenceStudyContent() uses fetchVerseContent()
✓ getCollectionStudyContent() uses fetchVerseContent()

Test 5: Verify SMS fallback logic
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✓ Checks delivery_method
✓ Checks for 'sms' delivery method
✓ Checks 320 character threshold
✓ Fallback includes topic title when available

Test 6: Verify fallback format
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✓ Fallback uses 'Study:' prefix format
✓ Returns full content when fallback not triggered

Test 7: Verify error handling
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✓ Has exception handling
✓ Re-throws StudyPositionExceededException

=== ALL TESTS PASSED ===

Implementation Verified:
✅ SMS fallback uses actual API reference (via $lastUsedReference)
✅ No string parsing (strtok, newline manipulation) in fallback
✅ Reference is tracked via fetchVerseContent() wrapper
✅ All study types (topic, reference, collection) use fetchVerseContent()
✅ Email delivery unaffected (no fallback for email)
✅ Logging shows actual API reference used
✅ Proper fallback format: 'Study: [topic] - [reference]' or 'Study: [reference]'
✅ 320 character threshold check for SMS only

Acceptance Criteria Met:
✅ SMS fallback uses the actual API reference passed when fetching verses
✅ No string parsing or newline manipulation
✅ Fallback reference is accurate and matches what API was called with
✅ Email delivery unaffected
✅ Logging shows reference used for fallback
✅ Works for topic, reference, and collection studies