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[Cumacea]

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[mateacademy-ai-mentor]

Review Summary

Your test file fillTank.test.js demonstrates solid coverage of all required scenarios. The tests correctly validate the fillTank function behavior including: function signature usage, full tank fill when amount is not provided, tank capacity limits, payment constraints with the canAfford method, proper floor rounding to 1 decimal for pouring amount, price rounding to 2 decimals, and the minimum 2-liter threshold. All assertions properly check both money withdrawal and fuel addition through the customer's state mutation. The test expectations are mathematically accurate and align with the rounding rules specified in the requirements. This is a well-structured test suite that will effectively validate the implementation.

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