Advanced Swift 2 Application Development (Video 30)

This video tutorial covers the process of creating and running unit tests using assertions in Xcode. It explains how to handle both synchronous and asynchronous tasks within tests and introduces the concept of code coverage reports to evaluate test coverage. The video also briefly touches on creating UI tests using Xcode's recording feature.

What is the primary purpose of using assertions in unit tests?

• To validate the correctness of the code

• To compile the code

• To increase code execution speed

• To generate code documentation

What is the naming convention for unit test methods?

• Start with 'test' in lowercase

• End with 'test' in lowercase

• Start with 'Test' in uppercase

• End with 'Test' in uppercase

Which assertion method checks if a value is not null?

• XCTAssertNil

• XCTAssertNotNil

• XCTAssertEqual

• XCTAssertTrue

Why might you need to create expectations in unit tests?

• To simplify test code

• To increase test coverage

• To manage asynchronous operations

• To handle synchronous tasks

What is the purpose of setting a timeout for expectations in tests?

• To ensure the test runs indefinitely

• To prevent the test from starting

• To increase the test's priority

• To limit the test execution time

What do code coverage reports help you understand?

• The readability of the code

• The number of bugs in the code

• The amount of code covered by tests

• The speed of code execution

How can you improve code coverage for untestable parts of your code?

• By breaking them into smaller, testable methods

• By ignoring them

• By increasing the timeout for tests

• By writing more complex tests