Design test cases to verify a computer program : Testing for Errors

The video tutorial teaches how to test for errors in functions, specifically focusing on the divide function. It explains how to raise a ValueError when a divisor is zero and how to implement a test to check for this error using 'self.assertRaises'. The tutorial also discusses alternative methods for error testing, such as using a lambda function, and concludes with a recommendation to use context managers for clarity.

What error is raised when the divisor is zero in the divide function?

• KeyError

• IndexError

• ValueError

• TypeError

Which method is used to check if an error is raised in a test?

• self.assertFalse

• self.assertRaises

• self.assertTrue

• self.assertEqual

In the context of error testing, what does the 'self.assertRaises' method do?

• It verifies if a function raises a specific error.

• It compares two values for equality.

• It checks if a function returns a specific value.

• It ensures a function executes without any errors.

What is a key advantage of using a context manager for error testing?

• It provides detailed error messages.

• It automatically fixes errors in the code.

• It simplifies the syntax and makes the code more readable.

• It allows testing without writing any code.

Why might using a callable be considered slightly worse for error testing in most cases?

• It is less intuitive when functions take arguments.

• It cannot handle multiple error types.

• It requires more lines of code.

• It does not work with functions that return values.