fill-tank:master

[sonik-boom71]

Добавлены unit-тесты для функции fillTank

Что сделано

• Проверены базовые случаи заправки
• Проверены граничные случаи (полный/пустой бак, цена 0)
• Проверено округление результата (топливо — floor до 1 знака, цена — round до 2 знаков)
• Проверен тип возвращаемого значения (undefined — функция мутирует объект)
• Проверено ограничение по деньгам (заправка только до доступного остатка)
• Проверен опциональный параметр amount
• Проверены разные объёмы баков и цены

Как запустить тесты

npm test

[mateacademy-ai-mentor]

Review Summary

Your test file demonstrates solid coverage for the fillTank function. All core requirements are properly tested including funding limitations, rounding behavior (fuel to 1 decimal, price to 2 decimals), the minimum 2-liter threshold, tank capacity constraints, and return value verification. The structure follows Jest best practices with well-organized describe blocks. Minor improvements to consider (not blocking): - The "should not exceed tank capacity" test only verifies fuel state but doesn't check money deduction consistency. Adding a money assertion would align it with other tests. - While default full-tank behavior is indirectly tested through edge cases, an explicit dedicated test would improve clarity and documentation. These are low-priority suggestions and do not prevent the tests from validating the core functionality. Your implementation successfully covers all essential requirements from the task description.

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