$1.$A program converts student marks that are input as marks out of $100$ to letter grades following the rules

below.

A mark of at least $90$ earns A$+$

A mark of at least $80$ earns A

A mark of at least $70$ earns B

A mark of at least $60$ earns C

A mark of at least $50$ earns D

A mark below $50$ means F $($Failure$)$

If a student is excused from submitting $40\%$ or more of the gradable work for acceptable reasons

such as protracted illness, a mark of I $($Incomplete$)$ is given. Then the student can make

arrangements to submit missing work to complete the course after the end of term.

Note: Numeric marks are recorded accurate to one decimal point $(0\mathrm{.}1)$ and should be rounded up

to the nearest whole number $(0\mathrm{.}5+->1)$ by the grading program.

The objective of testing is to ensure that students are assigned the correct letter grade, given their

numeric mark.

a$.$ Draw the diagram to show equivalence partitions and boundary values that ensure all input

values are tested $(0\mathrm{.}5$ pts$)$

Hint: ignore the incomplete situation

b$.(0\mathrm{.}5$ pts$)$ How many test cases do you think are required for complete coverage?

And why? $($How many tests do you think are needed for each partition$)$

c$.(0\mathrm{.}5$ pts$)$ Describe a test case where the expected result is a pass.

Title: Student gets an A

Setup: $($preconditions$)$

Action or input:

Expected result:

d$.(0\mathrm{.}5$ pts$)$ Describe a test case where the expected result not a pass

Hint: there are two possible non$-$pass situations. List them here to help form your title.

$1\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_2\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Title:

Setup:

Action or input:

Expected result:

Question $2$

When asked for an insurance quotation, an auto insurance company looks up the base rate of insuring a specific

make, model and year of car. It then multiplies the base rate by percentages according to the business rules

below to calculate the quote for a customer:

$$ Drivers over $55$ years of age with good driving records pay the $90\%$ of the base rate.

$$ Drivers who are male and under $25$ years of age pay $150\%$ of the base rate.

$$ Anyone who uses the car for business pays a premium of $120\%$ of what they would pay for personal

use only.

Example: the base rate for a $2005$ Honda Civic might be $$500\mathrm{.}00.$ A retired senior with a good

driving record would pay $$450\mathrm{.}00$ for coverage for insurance to drive $2005$ Honda Civic. However,

if that senior has a business as a messenger for which he uses the car, his rate becomes $$540\mathrm{.}00.$

a$.(1$ pts$)$ Draw a decision table to calculate the quotation for a client

Hint: start by deciding:

What are the conditions that determine outcomes?

What are the possible outcomes?

Draw your table here:

b$.$ Use the decision table above to help design test cases for the test objective:

Every driver who requests a quotation is told the correct rate.

Notes:

$$Criteria for success$$ refers to deciding whether application passes the test, not whether the

driver gets insurance.

Test Case $1(1$ pts$)$ Test Case $2(1$ pts$)$

Identifier$/$title

Criteria for success:

Details:

Preconditions

Operation$/$Action performed

Postconditions