Add comprehensive integration tests for smart wallet lifecycle

[alberto-crossmint]

Add comprehensive integration tests for smart wallet lifecycle

Summary

This PR adds comprehensive integration tests for the smart wallet system covering the complete lifecycle from factory deployment to external contract authorization. The tests verify:

• Factory deployment with role-based access control
• Smart wallet deployment through factory (with admin signer)
• Adding standard and restricted signers with various policies
• Wallet upgrade functionality
• External contract authorization flows

The integration tests are designed to work together as a cohesive test suite, ensuring all components interact correctly throughout the smart wallet's lifecycle.

Review & Testing Checklist for Human

Risk Level: 🟡 Medium - Core functionality covered but some limitations in test approach

• Verify test scenarios match real deployment patterns - The tests use env.register_at() to simulate factory deployment rather than actual WASM deployment due to constructor issues. Confirm this approach adequately tests the intended functionality.
• Check WASM file dependency setup - Tests rely on embedded WASM bytecode at build time (target/wasm32-unknown-unknown/release/smart_wallet.wasm). Verify this file exists and is built correctly in CI.
• Test actual factory deployment outside test environment - Since tests simulate deployment, manually verify that real factory deployment works end-to-end with the same signer configurations.
• Validate external contract authorization flows - The tests use mock token transfer contexts for external auth. Confirm this matches how the smart wallet will be used in production.
• Run full test suite - Execute cargo test to ensure all 37 smart-wallet tests pass and no existing functionality is broken.

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Diagram

%%{ init : { "theme" : "default" }}%%
graph TD
    IntegrationTests["contracts/smart-wallet/src/tests/<br/>integration.rs"]:::major-edit
    ModFile["contracts/smart-wallet/src/tests/<br/>mod.rs"]:::minor-edit
    TestConstants["contracts/smart-wallet/src/<br/>test_constants.rs"]:::major-edit
    LibFile["contracts/smart-wallet/src/<br/>lib.rs"]:::minor-edit
    CargoToml["contracts/smart-wallet/<br/>Cargo.toml"]:::minor-edit
    
    TestUtils["contracts/smart-wallet/src/tests/<br/>test_utils.rs"]:::context
    FactoryContract["contracts/contract-factory/<br/>src/lib.rs"]:::context
    WalletContract["contracts/smart-wallet/src/<br/>wallet.rs"]:::context
    
    IntegrationTests --> TestUtils
    IntegrationTests --> TestConstants
    IntegrationTests --> FactoryContract
    IntegrationTests --> WalletContract
    ModFile --> IntegrationTests
    LibFile --> TestConstants
    CargoToml --> FactoryContract
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB  
    classDef context fill:#FFFFFF
    
    subgraph Legend
        L1["Major Edit"]:::major-edit
        L2["Minor Edit"]:::minor-edit
        L3["Context/No Edit"]:::context
    end

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Notes

• Test Approach: Due to WASM constructor issues with factory_client.upload_and_deploy(), the comprehensive test uses env.register_at() to simulate factory deployment while still testing address prediction and role setup.
• WASM Embedding: Tests embed WASM bytecode directly as a constant to avoid filesystem dependencies, following the pattern established in the existing codebase.
• Dependency Addition: Added contract-factory as a dev dependency to enable factory client testing in smart-wallet integration tests.
• Test Coverage: All individual lifecycle components (factory deployment, signer management, upgrades, external auth) pass individually and in the comprehensive lifecycle test.

Link to Devin run: https://app.devin.ai/sessions/9e36b62b578546f083a2dff857c947f6

Requested by: Alberto García (@alberto-crossmint)

[devin-ai-integration]

Original prompt from Alberto:

Create integration tests for these contracts. That should include:

- Deploying the factory
- Deploying a smart wallet with an admin signer through the factory
- Adding a new standard signer
- Adding a new restricted signer
- Upgrade the wallet
- Call an external contract that requires auth for the smart wallet

You only need to look in the following repo: Crossmint/stellar-smart-account

[devin-ai-integration]

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