feat: add unit tests for BalancesService and enhance wallet limit refresh logic

[baktun14]

Summary by CodeRabbit

• Tests

  • Added comprehensive tests for wallet limit refresh covering trial-ending, unchanged limits, limit changes, and non-trial wallets.

• Refactor

  • Updated the update flow so trial-end status is applied before deciding to skip further updates, ensuring trial transitions are handled correctly.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

---

📝 Walkthrough

Walkthrough

Reorders an early-return guard in BalancesService.refreshUserWalletLimits so end-trial state updates are applied before returning; adds a new comprehensive test suite validating end-trial and limits-update scenarios for that method.

Changes

Cohort / File(s)	Summary
Test Suite apps/api/src/billing/services/balances/balances.service.spec.ts	Adds unit tests for refreshUserWalletLimits covering: end-trial with/without limit changes, limit-only changes, non-trialing wallets, and no-op behavior; introduces a setup helper and stubs getFreshLimitsUpdate.
Service Implementation apps/api/src/billing/services/balances/balances.service.ts	Moves the early no-update guard to after applying endTrial adjustments so isTrialing can be cleared even when limits remain unchanged.

Sequence Diagram(s)

sequenceDiagram
  rect rgba(200,200,255,0.5)
    participant Caller
    participant BalancesService
    participant UserWalletRepo
    participant TxManager
    participant AuthzHttp
    participant DeploymentHttp
    participant StatsService
  end
  Caller->>BalancesService: refreshUserWalletLimits(walletId, endTrial?, incomingLimits?)
  BalancesService->>UserWalletRepo: fetch wallet
  BalancesService->>BalancesService: compute freshLimits (getFreshLimitsUpdate)
  alt endTrial provided
    BalancesService->>UserWalletRepo: update isTrialing = false (if applicable)
  end
  alt freshLimits differ from current
    BalancesService->>TxManager: begin transaction
    BalancesService->>UserWalletRepo: update feeAllowance/deploymentAllowance
    BalancesService->>DeploymentHttp: notify/update deployments (conditional)
    BalancesService->>AuthzHttp: update authz (conditional)
    BalancesService->>StatsService: record metrics
    BalancesService->>TxManager: commit
  else no updates needed
    BalancesService-->>Caller: return (no further updates)
  end
  BalancesService-->>Caller: return updated wallet state

Loading

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 I hopped through lines to flip a flag,

End-trial cleared before the early drag.
Limits checked, small changes wake the night,
Tests now guard each gentle, measured bite.
A tiny rabbit's balance feels just right.

🚥 Pre-merge checks | ✅ 1 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The pull request description is entirely empty, missing both required sections: 'Why' (rationale/issue references) and 'What' (explanation of changes).	Add a description explaining why these changes were made, reference any related issues, and describe what was changed in the PR.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and accurately summarizes the main changes: adding unit tests for BalancesService and enhancing wallet limit refresh logic.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/trial-flag

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.96%. Comparing base (292820f) to head (a282695).
⚠️ Report is 25 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2689      +/-   ##
==========================================
- Coverage   51.77%   50.96%   -0.82%     
==========================================
  Files        1045     1010      -35     
  Lines       27447    26615     -832     
  Branches     6340     6245      -95     
==========================================
- Hits        14211    13564     -647     
+ Misses      12809    12633     -176     
+ Partials      427      418       -9     

Flag	Coverage Δ		*Carryforward flag
api	76.65% <100.00%> (-0.02%)	⬇️
deploy-web	37.19% <ø> (ø)		Carriedforward from 292820f
log-collector	?
notifications	85.56% <ø> (ø)		Carriedforward from 292820f
provider-console	81.48% <ø> (ø)		Carriedforward from 292820f
provider-proxy	82.41% <ø> (ø)		Carriedforward from 292820f
tx-signer	?

*This pull request uses carry forward flags. Click here to find out more.

Files with missing lines	Coverage Δ
.../src/billing/services/balances/balances.service.ts	75.38% <100.00%> (+1.53%)	⬆️

... and 36 files with indirect coverage changes

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@apps/api/src/billing/services/balances/balances.service.spec.ts`:
- Around line 70-83: The setup function is currently defined inside a nested
suite—move the entire setup function (the function named setup that constructs
BalancesService, mocks BillingConfig, UserWalletRepository, TxManagerService,
AuthzHttpService, DeploymentHttpService, StatsService and spies on
service.getFreshLimitsUpdate) to the bottom of the root describe block; ensure
it remains an untyped-return helper that accepts a single optional parameter
with inline type { limitsUpdate?: Partial<UserWalletInput> }, returns the
created { service, userWalletRepository } object, and does not introduce shared
state or a declared return type, preserving the jest.spyOn(service,
"getFreshLimitsUpdate").mockResolvedValue(...) behavior.