Question

A developer has a payment-processing module with an existing test suite reporting 62% line coverage. Their goal is to raise meaningful coverage by targeting the specific untested logic paths — particularly the branches that handle declined transactions and currency-conversion rounding. What is the most effective way to use GitHub Copilot to accomplish this?

Accepted Answer

Open the module alongside its coverage report, select the specific uncovered branches, and ask Copilot Chat to generate tests that exercise those declined-transaction and rounding paths, then verify each new test actually fails without the code.

Answer

Ask Copilot to regenerate the entire test file from scratch so the new suite replaces the old one and guarantees higher coverage numbers.

Answer

Prompt Copilot to add more assertions to the already-passing tests until the coverage percentage displayed by the tool increases.

Answer

Rely on Copilot's completions to automatically detect which branches lack coverage and insert the missing tests without any pointers to the uncovered code.