POC POC Testing & Quality Assurance 2 — Questions and Answers
Question 1: In pytest, what built-in fixture provides a temporary directory for test files?
- tmp_path (Correct answer)
- tmpdir
- temp_dir
- test_dir
Correct answer: tmp_path
The `tmp_path` fixture in pytest provides a `pathlib.Path` temporary directory unique to each test invocation.
Question 2: Which method in unittest asserts that a specific exception is raised?
- assertRaises() (Correct answer)
- expectException()
- assertThrows()
- checkError()
Correct answer: assertRaises()
`assertRaises(ExceptionType)` is used as a context manager or callable to verify that the specified exception is raised.
Question 3: What is mocking in Python unit testing?
- Replacing real objects with simulated ones to isolate units under test (Correct answer)
- Creating test data files
- Running tests in parallel threads
- Generating HTML test reports
Correct answer: Replacing real objects with simulated ones to isolate units under test
Mocking replaces real dependencies with controlled substitutes so tests verify only the unit being tested.
Question 4: What does the `@pytest.fixture` decorator do?
- Defines a reusable setup function injected into test parameters (Correct answer)
- Marks a test as expected to fail
- Sets the test execution order
- Configures a test timeout value
Correct answer: Defines a reusable setup function injected into test parameters
The `@pytest.fixture` decorator defines a function that provides a fixed baseline or shared resource, injected by name into test function parameters.
Question 5: In unittest, what method is called after each test method to clean up resources?
- tearDown() (Correct answer)
- cleanup()
- reset()
- afterTest()
Correct answer: tearDown()
`tearDown()` is called after each test method to perform cleanup, even if the test raised an exception.
Question 6: What is code coverage in software testing?
- The percentage of source code lines executed during test runs (Correct answer)
- The number of test cases written
- The complexity score of test scenarios
- The volume of test documentation
Correct answer: The percentage of source code lines executed during test runs
Code coverage measures what percentage of source code is actually executed when the full test suite runs.
POC POC Testing & Quality Assurance 2
In pytest, what built-in fixture provides a temporary directory for test files?