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Summary

Add regression test coverage for ATSC XMLTV output generation (--xmltv=1) using the ATSC broadcast sample I uploaded to the platform.

This test exercises:

• ATSC PSI/SI table parsing (VCT, ETT, EIT)
• XMLTV format generation from broadcast EPG data
• Exit code validation (expected_rc=10) with OutputType.null

Technical Details

Sample Selection

Sample 187 (ch29FullTS.ts) – ATSC broadcast sample for XMLTV testing with --xmltv=1 --out=null:

• SHA256: 6b10f8aef895469ec9cb89ecd0c2463eb2442052c32da9d81c6a6f5cec9137b8
• Size: 300.52 MB | Duration: 2m 10s
• ATSC PSI/SI Tables:
  • Virtual Channel Table (VCT) - channels 5.1-5.5 (KPIX-TV, StartTV, etc.)
  • Extended Text Table (ETT) - program titles/descriptions
  • Event Information Table (EIT) - multi-day EPG scheduling
• Captions: EIA-608/708 across 5 video PIDs

I reviewed the TS samples currently available on the platform and did not find any that contain the ATSC PSI/SI tables (VCT, EIT, ETT) needed to exercise the ATSC XMLTV generation paths. For this reason, I recently added an ATSC broadcast sample to provide regression coverage.

Database Deployment Strategy

Following the pattern from the WebVTT PR (#993):

Why no test fixture changes:

• Sample 187 is a 300MB production upload (not in test fixtures)
• Adding it would cause foreign key violations in test DB
• Migration-only registration follows the existing pattern for uploaded samples

Test Characteristics

• OutputType.null: Exit-code-only validation (no golden file comparison)
• expected_rc = 10: Correct ATSC XMLTV processing return code
• ignore = false: Standard validation (no special error handling)
• Category: "General" - Uses existing category for organization
• Idempotent: Migration checks for existing test before inserting (safe to re-run)

Migration Details

• Revision: eb7303e132c0
• Revises: c8f3a2b1d4e5 (latest migration on master)
• Creates: Regression test + category linkage + output metadata
• Downgrade: Clean removal in correct FK order

Related Work

• [FIX]: Restore XMLTV generation for ATSC EIT/VCT streams and correct EIT bounds checks ccextractor#1773 — ATSC XMLTV implementation
• [FIX]: Add ATSC VCT virtual channel numbers and call signs to XMLTV output ccextractor#1837 — ATSC table parsing