Write unit tests for event worker XDR decoding and event handlers

[ogazboiz]

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Description

The decodeU64, decodeI128, decodeAddress, decodeMap helpers and all event handlers in the event worker have no tests. A subtle decoding bug would silently corrupt all indexed stream data.

Test Cases Needed

• test_decodeU64_max_value
• test_decodeI128_positive, test_decodeI128_negative, test_decodeI128_max_i128
• test_decodeAddress_g_address (account key)
• test_decodeAddress_c_address (contract ID)
• test_handleStreamCreated_writes_correct_db_record (mock Prisma)
• test_handleStreamToppedUp_updates_deposited_amount
• test_handleStreamCancelled_sets_inactive
• test_handleStreamPaused_sets_isPaused (once handlers added)
• test_unknown_event_type_silently_ignored

Files

• backend/tests/soroban-event-worker.test.ts (create)

Acceptance Criteria

• All tests pass with mocked Prisma
• Edge values (max i128, negative, C... addresses) covered
• Runs in npm test

[solomonokeke012-bot]

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love to work on this

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[uboho-prog]

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I can work on this please assign

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[bigjoe-io]

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Hi... I would like to work on this issue

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[Marvell69]

@Marvell69 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

hi, i'd like to apply to this issue

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