test: add unit tests for PR#19

[rohitvinnakota-codecov]

test: add unit tests for PR#19

This PR adds comprehensive unit tests for the changes introduced in PR#19.

Changes:

• Add unit tests for divide2 function

• Add test_divide2() function with comprehensive test cases

• Cover normal division scenarios with integers and floats

• Test division by zero error handling

• Test negative number division cases

• Ensure full coverage of the new divide2 method

[rohitvinnakota-codecov]

On it! We are reviewing the PR and will provide feedback shortly.

[rohitvinnakota-codecov]

PR Description

This pull request aims to improve the test coverage and error handling of the Calculator.divide function. It introduces a new test function, test_divide2, to specifically address division by zero and ensure correct behavior in various scenarios.

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Key Technical Changes

The key technical change is the addition of the test_divide2 function in test_calculator.py. This function includes assertions to verify the output of Calculator.divide2 for different inputs, including positive, negative, and zero values, as well as division by zero. The pull request also highlights the need for a Calculator.divide2 implementation, which is currently missing.

Architecture Decisions

No significant architectural decisions are made in this pull request. It primarily focuses on improving test coverage. However, the introduction of test_divide2 implies an intention to either modify the existing divide function or introduce a new divide2 function in the Calculator class.

Dependencies and Interactions

This pull request depends on the Calculator class and its divide (or intended divide2) method. It interacts with the testing framework to execute the new test cases. The changes do not directly affect other parts of the system, but the implementation of divide2 will need to be consistent with the existing Calculator class structure.

Risk Considerations

The primary risk is the absence of the Calculator.divide2 method. If the method is not implemented, the tests will fail. Additionally, if divide2 is implemented differently from the intended behavior (as defined by the tests), it could introduce unexpected bugs. Reviewers should pay close attention to the implementation of divide2 to ensure it aligns with the test cases and handles division by zero correctly.

Notable Implementation Details

The most notable implementation detail is the inclusion of a test case specifically for division by zero, which was previously commented out in the original test_divide function. This highlights the importance of explicitly testing edge cases and error conditions. The reviewer should ensure that the implementation of divide2 correctly handles this case by returning the string 'Cannot divide by 0'.

[rohitvinnakota-codecov]

The test function test_divide2() references Calculator.divide2(), but this method does not exist in the Calculator class (see app/calculator.py). The test will fail with an AttributeError. The divide2() method must be implemented in the Calculator class before this test can pass. According to the repository context, this method should handle division by zero by returning the string 'Cannot divide by 0'.

_{Did we get this right? 👍 / 👎 to inform future reviews.}

[rohitvinnakota-codecov]

The test function test_divide2() is testing a method Calculator.divide2() that does not exist in the Calculator class (checked in app/calculator.py). This test will fail with an AttributeError when executed. You need to either: (1) implement the divide2() method in the Calculator class, or (2) remove this test if the functionality is not needed. Based on the context, it appears divide2() should be a copy or variant of the existing divide() method.

_{Did we get this right? 👍 / 👎 to inform future reviews.}