ISE · Introduction to Software Engineering

Chapter 09 · Software Testing and Quality Assurance

10 questions

Open the slides
The answers are not shown on this page. Use the questions to revise, then check yourself with the self-check quiz at the end of the slide deck.

  1. Question 1

    A developer writes <code>if (now > start)</code> instead of <code>if (now > start - 24h)</code>. What is that wrong line?

    • An error
    • A fault
    • A failure
    • A validation issue

  2. Question 2

    The team demonstrates the CLI to the club leader to check that it really solves the club's problem. This activity is…

    • Verification
    • Static analysis
    • Validation
    • Regression testing

  3. Question 3

    A test runs <code>RegistrationService</code> together with <code>CsvRegistrationRepository</code> writing a real temporary file. Which level is it?

    • Unit
    • Integration
    • System
    • Acceptance

  4. Question 4

    Capacity is 30 and k is the number of seats already taken. Which set gives one representative for each valid partition, "seat free" and "full"?

    • k = 5 and k = 40
    • k = 5 and k = 10
    • k = 28 and k = 29
    • k = 40 and k = 50

  5. Question 5

    Cancellation is allowed up to and including 24 h before the start S. Which values does 2-value boundary value analysis test for this rule (1-minute resolution)?

    • S − 48 h and S
    • S − 24 h and S − 24 h + 1 min
    • S − 25 h and S − 23 h
    • Only S − 24 h

  6. Question 6

    For <code>admit(taken, capacity, waitlistOn)</code> with two <code>if</code> decisions, the tests (10, 30, false) and (30, 30, true) are run. What is the branch coverage?

    • 25 %
    • 50 %
    • 75 %
    • 100 %

  7. Question 7

    Why does the test call <code>ASSERT_TRUE(reg.has_value())</code> before <code>EXPECT_EQ(reg->status, …)</code>?

    • ASSERT is faster than EXPECT
    • To stop the test before dereferencing an empty optional
    • EXPECT_EQ cannot compare enums
    • ASSERT_TRUE also checks the status

  8. Question 8

    Why does <code>RegistrationService</code> receive a <code>Clock</code> instead of calling <code>system_clock::now()</code>?

    • It makes the program run faster
    • Tests can set the time exactly, so time rules are deterministic
    • GoogleTest cannot link against <chrono>
    • The C++ standard forbids calling now() in a class

  9. Question 9

    A bug is in state Fixed. The tester re-runs the test and it still fails. Which state comes next?

    • Closed
    • Rejected
    • Verified
    • Reopened

  10. Question 10

    The team found 12 defects before release and the client found 3 afterwards. What share of defects escaped?

    • 3 %
    • 20 %
    • 25 %
    • 80 %