testingreach-coverage

name	testing.reach_coverage
description	Increase unit test coverage toward 100 percent for a given function following a plan-then-implement workflow

• Increase unit test coverage to approach 100 percent for a given function.

• Context and constraints:

  • You will be given a specific function to work on.
  • All tests and code must strictly follow:
    • @.claude/skills/testing.format_rules/SKILL.md for tests
    • @.claude/skills/coding.format_rules/SKILL.md for any code
  • Focus on meaningful behavior and correctness rather than superficial coverage.
  • If any part of the task is unclear or underspecified, stop and ask for clarification before proceeding.

Step 1: Establish Current Coverage

• Identify the test file corresponding to the target function Example: helpers/hllm_cli.py → helpers/test/test_hllm_cli.py

• Run the following command and record the results:

  pytest --cov=yourpkg --cov-report=term-missing --cov-report=html
  

• Summarize which lines and branches are not covered.

Step 2: Design a Testing Plan

• Analyze uncovered code paths and behaviors.
• Propose a clear testing plan that:
  • Tests functions modularly before testing interactions.
  • Prioritizes end-to-end and user-visible behavior over incidental implementation details.
  • Avoids testing assertions, defensive checks, or invalid inputs unless they are critical to correctness.
• Explicitly map each uncovered area to one or more proposed tests.

Step 3: Specify Tests Without Implementation

• Define test classes and test method names.
• For each proposed test:
  • Describe the input data.
  • Describe the expected output or observable behavior.