test-design

Test Design for vibing.nvim

Generate comprehensive E2E test scenarios after implementing new features.

Usage

Provide context when invoking:

/test-design

I implemented [feature description].

Changed files:
- [list of new/modified files]

Existing tests:
- [list of existing test files]

Example:

/test-design

I implemented a new slash command `/export` that exports chat history to Markdown.

Changed files:
- lua/vibing/application/chat/slash_commands.lua (added export_command)
- lua/vibing/utils/markdown_exporter.lua (new file)

Existing tests:
- tests/e2e/chat_basic_flow_spec.lua (basic chat operations)

Output Format

1. Test Scenario Analysis

Categorized scenarios with checkboxes:

• Happy Path ✅ - Most common use cases
• Error Cases ❌ - Error handling (validation, network, permissions)
• Edge Cases 🔸 - Boundary conditions, special characters, timeouts
• Integration Points 🔗 - Interactions with other features

2. Priority Ranking

• Critical: Core functionality - must work for release
• High: Error handling - security, data loss prevention
• Medium: Usability - edge cases, user experience
• Low: Performance - optimization, rare scenarios

3. Test Code Templates

Ready-to-implement code using e2e_helper.lua:

describe("E2E: [Feature Name]", function()
  local nvim_instance

  before_each(function()
    nvim_instance = helper.spawn_nvim_instance({
      headless = true,
      init_script = "tests/minimal_init.lua",
    })
  end)

  after_each(function()
    helper.cleanup_instance(nvim_instance)
  end)

  -- Test cases with appropriate TIMEOUTS constants
end)

Workflow

1. Gather context - Read changed files, analyze scope, review existing tests
2. Design scenarios - Generate Happy/Error/Edge/Integration cases
3. Prioritize - Rank by Critical/High/Medium/Low
4. Generate code - Create implementation-ready test templates

Example Output

For a /export command that exports chat to Markdown: