Term
| Define a defect or bug in terms of software testing |
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Definition
| A flaw in a component which can cause the component or system to fail to perform its required function |
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Term
| What does testing show and what does it not show? |
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Definition
| Testing shows the presence of bugs, but not the absence of bugs. Testing cannot prove correctness of a program. |
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Term
| Is exhaustive testing ever feasible? |
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Definition
| Very rarely. Only when the input parameters are limited. Usually cannot do it because it would take longer to compute then the life of the system. |
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Term
| What can be used to focus testing efforts? |
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Definition
| risk analysis and prioritisation |
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Term
| When should testing activities ideally start |
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Definition
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Term
| What are the 7 principles of testing? |
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Definition
testing shows the presence of defects
exhaustive testing is impossible
test early, test often
defects are liable to cluster in components
dynamic testing finds fewer defects
testing is context dependent
the absence of errors is a fallacy |
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Term
| What should you do when monitoring the testing process? |
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Definition
measure and analyse rest results
monitor and document test coverage
provide information on the process
initiate corrective actions |
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Term
| Explain the positive effect of degrees of independence when testing |
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Definition
| mindset of testing is different when testing and developing; creator of some code has an affinity to the code which makes it harder for them to find fault |
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Term
| what is verification during testing? |
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Definition
| are we building the product right? |
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Term
| what is validation during testing? |
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Definition
| are we building the right product? |
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Term
| how does testing in the waterfall model inhibit the development process? |
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Definition
| the testing only happens at the end, which means that fixing bugs takes a lot longer than doing iterative testing |
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Term
| what are the four test levels of the V model? |
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Definition
component/unit testing
integration testing
system testing
acceptance testing |
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Term
| what is test driven development? |
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Definition
start with an empty program and build unit tests - all tests should fail.
create the program that makes all the tests pass.
functionality created one piece at a time |
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Term
| name the two types of testing |
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Definition
black box testing
white box testing |
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Term
| what is black box testing? |
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Definition
views the program as a unit of what it does, not how
apply inputs to program and expects outputs |
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Term
| what is white box testing? |
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Definition
views the program structure, not just outputs
design tests based on the internal code structure |
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Term
| what is input domain modelling? |
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Definition
| construction of an abstract view of the input space for the unit under test |
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Term
| what is equivalence partitioning? |
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Definition
| choosing one input from each possible logical partitions from the input domain |
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Term
| what is boundary value analysis? |
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Definition
| takes an input domain that has equivalence partitioning applied to it and suggests that tests on the boundaries of each partition should be tested, as the errors are most likely to be there |
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Term
| name the combination strategies used in conjunction with input domain modelling? |
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Definition
each choice coverage
pair wise coverage
base choice coverage
decision tables |
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Term
| what is each-choice coverage? |
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Definition
ensure that for each parameter each type of value is used in at least one test case
e.g. (-5, -5), (0,0), (5,5) is valid for a two integer partitions with positive, zero and negative value types |
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Term
| what is pair-wise coverage? |
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Definition
| a value from each block for each parameter must be combined with a value from every block for each other parameter |
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Term
| what is base-choice coverage? |
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Definition
| a variation of each-choice coverage where you employ domain specific knowledge to identify an important base block |
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Term
| What is node coverage in white box testing? |
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Definition
| A test set is produced in union of the nodes visited contains every node of the graph that is possible to reach. |
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Term
| What is edge coverage in white box testing? |
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Definition
| A test set where every path of length zero or one is visited (by including length zero also get node coverage) |
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Term
| What is prime path coverage in white box testing? |
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Definition
| A test set where which includes all simple paths which do not appear as a proper subpath of any other simple paths |
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Term
| How can you find a prime path? |
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Definition
Start with paths of length 0, then length 1, etc.
This generates all simple paths. Non-prime paths (i.e. one with subpaths of other paths) can be removed. |
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Term
| What is the syntax for a path that cannot be further extended because it has reached the final node? |
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Definition
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Term
| What is the syntax for a path which cannot be extended because it is a cycle? |
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Definition
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Term
| What does the method which gets executed before each JUnit test look like? |
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Definition
@Before
public void setUp() throws Exception { |
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Term
| What does the method which gets executed after each JUnit test look like? |
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Definition
@After
public void tearDown() throws Exception { |
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Term
| What does a normal test look like? |
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Definition
@Test
public void test1() {
f1 = new Fraction(10,10);
assertEquals("Expect num=1", 1, f1.getNumerator());
} |
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Term
| What does a test which SHOULD throw an exception look like? |
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Definition
@Test (expected = ArithmeticException.class)
public void test5() {
f1 = new Fraction(-3,0);
} |
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Term
| What has happened if a JUnit test passes? |
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Definition
| The test has executed without fail() or assertEquals() (and its equivalents) being called and without any exceptions being thrown |
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Term
What is the name of the JUnit method which checks for something to be true and fails the test if its is not?
What parameters does it take? |
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Definition
| assertEquals(message, expected value, actual value) |
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Term
| What precedes every test method? |
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Definition
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Term
| What precedes the setUp method? |
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Definition
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