Improve accounts views test coverage from 79% to 98%

[devin-ai-integration]

Improve accounts views test coverage from 79% to 98%

Summary

Added comprehensive test coverage for Django accounts views by implementing 8 new test cases across 3 test classes. The changes target previously uncovered error handling paths, form validation scenarios, and edge cases to improve code reliability and regression detection.

Key improvements:

• ✅ Coverage increased from 79% to 98% (52/53 statements covered)
• ✅ Total tests increased from 33 to 41 (all passing)
• ✅ Added error handling tests for settings, profile, and email validation views
• ✅ Only 1 line remains uncovered (favorites filtering logic in profile view)

Review & Testing Checklist for Human

Medium Risk (3 items) - Test quality and edge case assumptions need verification:

• Verify settings form validation - Test the invalid settings form scenario manually in the browser to ensure it actually triggers the error template path (accounts/_settings.html) with real invalid data
• Test profile 404 behavior - Navigate to /profile/99999/ to confirm the 404 response matches expected application behavior and user experience
• Negative testing - Temporarily break the views code (e.g., comment out error handling) and verify the new tests actually fail to catch regressions

---

Diagram

%%{ init : { "theme" : "default" }}%%
graph TD
    TestsFile["realworld/accounts/tests.py<br/>+73 lines"]:::major-edit
    ViewsFile["realworld/accounts/views.py<br/>profile, settings, check_email"]:::context
    FormsFile["realworld/accounts/forms.py<br/>SettingsForm validation"]:::context
    
    TestsFile -->|"tests error paths"| ViewsFile
    ViewsFile -->|"uses forms"| FormsFile
    TestsFile -->|"validates form behavior"| FormsFile
    
    subgraph Legend
        L1[Major Edit]:::major-edit
        L2[Minor Edit]:::minor-edit  
        L3[Context/No Edit]:::context
    end
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB
    classDef context fill:#FFFFFF

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Notes

• The remaining uncovered line (profile view favorites filtering) would require creating test articles with favorites to cover
• Coverage improvement focused on error handling paths that are critical for user experience but often missed in initial testing
• All new tests follow existing Django TestCase patterns with setUpTestData and force_login for consistency

Requested by: Shawn Azman (@ShawnAzman)
Link to Devin run: https://app.devin.ai/sessions/0fd8dec132cd40788f0d39c805270aa5

[devin-ai-integration]

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