Test – Line Item and Metadata Validation

[Baskarayelu]

Description
Add tests for InvoiceMetadata: line_items (empty, one, many), line item amounts sum vs invoice amount if enforced; validate_invoice_metadata rejects invalid (e.g. negative, overflow).

Requirements and context

• Achieve minimum 95% test coverage for metadata and line items
• Smart contracts only (Soroban/Rust)

Suggested execution

1. Fork the repo and create a branch
   git checkout -b test/line-item-metadata-validation
2. Implement changes
   • Add tests in src/test_invoice_metadata.rs and test_types
3. Test and commit
   • Run cargo test
   • Attach test output

Example commit message
test: line item and metadata validation

Guidelines

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 96 hours

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[soomtochukwu]

@soomtochukwu has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hey, let me take care of this

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[Anuoluwapo25]

Hi maintainer, I'd like to take on this issue as i'll fully implement what is requested as i'm a fullstack web3 developer with experiences.

[Amarjeet325]

@Amarjeet325 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintainers 👋
I’d like to work on this issue.
I’m a full-stack developer and have previously contributed to multiple open-source projects.

Could you please assign this issue to me?

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Congratulations, @Amarjeet325! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

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