Testing Plan Design

Design and implement a test suite for existing software--Calculator in order to find any potential bug by using White and Black box Testing technique.

Test Report

CSCE -361 - Blackbox Testing

Name as it appears on Canvas: Xinyi Zhu
GitLab User ID: 1584

Calculator.calculate() to compute answer

1. Start up a. The function takes two arguments, an integer, type (which may be interpreted as a character) and a character array, token, which must have a \0 character after the last printable character. b. The function returns a string; however, it also has side-effects. It will update the stack backing the postfix calculator, and it may output to stdout.
2. Action on input a. The expected input to the calculator is a valid (well-formed) postfix expression containing integers, real numbers, and the mathematical operators +, -, *, /, =, separated by whitespace. b. Integers and real numbers are limited to 20 characters; entry of numbers exceeding this size results in an error message. c. Entry of any character other than 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, ., +, -, *, /, =, c, q results in an error message. d. The size of the stack is limited to 100 elements. Attempts to exceed the maximum stack size results in the display of an error message.

Calculator.calculate() Test Requirement

1. If type is the declared constant NUMBER then token will be treated as the textual representation of an integer or fixed-point real number. token will be parsed to determine the number’s value, and this number will be pushed onto the stack. The function will return null.

2. If type is the declared constant OPERAND_TOO_LONG then the function will return the first 20 characters of tokenfollowed by “… is too long”.

3. If type is the character = then the function will return a tab character followed by a textual representation of the value at the top of the stack; the stack will remain unchanged.

4. If type is the character +, -, *, or / then the function will pop a value off the stack

   1. If the value is 0.0 and type is / then the function will return “zero divisor popped”.
   2. Otherwise, the function will pop a second value off the stack and apply the appropriate arithmetic operation. The second value popped off the stack will be treated as the first operand, and the first value popped off the stack will be treated as the second operand. The result of the operation will pushed onto the stack. The function will return null.

5. If type is the character c then the function will pop the top value off the stack and return null.

6. If type is any other value then the function will return “unknown command” followed by type (interpreted as a character).

7. If the function attempts to pop a value off the stack when there are no values on the stack, the function will output “error: stack empty”, place the value 0 on the stack, and return the tab character followed by 0.0.

8. The stack is limited to 100 values. If the function attempts to push a value onto a full stack then the function will output “error: stack full” and return null.

Test 1

Equivalence partitions: Integer, Double and Char (not acceptable)

PURPOSE

Test invocation of Calculator.calculate(), If type is the declared constant NUMBER then token will be treated as the textual representation of an integer or fixed-point real number. token will be parsed to determine the number’s value, and this number will be pushed onto the stack

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
Calculator.NUMBER, 4	null
Calculator.NUMBER, 12.23	null
Calculator.NUMBER, not a number	NumberFormatException

TESTING REQUIREMENTS COVERED

1

Test 2

Equivalence partitions: None

PURPOSE

Test invocation of Calculator.calculate(), If type is the declared constant OPERAND_TOO_LONG then the function will return the first 20 characters of token followed by “… is too long”.

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
Calculator.OPERAND_TOO_LONG, a random 20+ long number	the random 20+ long number... is too long

TESTING REQUIREMENTS COVERED

1,2

Test 3

Equivalence partitions: Integer, Double, Char (not acceptable)

PURPOSE

Test invocation of Calculator.calculate(),if type is the character = then the function will return a tab character followed by a textual representation of the value at the top of the stack; the stack will remain unchanged.

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
2 ,=	2
21.35 ,=	21.35
not a number ,=	NumberFormatException

TESTING REQUIREMENTS COVERED

1,3

Test 4

Equivalence partitions: Integer, Double and Char(not acceptable),

Equivalence partitions: Divide non-zero number, Divide by Zero

PURPOSE

Test invocation of Calculator.calculate(), test If type is the character +, -, *, or / then the function will pop a value off the stack

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
+, 8 2	10
-, 8 2	6
+, 8 2	10
*, 8 2	16
/, 8 2	4
/, 2 0	zero divisor popped
+, 82.45 22.03	104.48
-, 82.45 22.03	60.42
*, 82.45 22.03	1816.3735
/, 82.45 22.03	3.742623694961416
/, 923.76 0	zero divisor popped

TESTING REQUIREMENTS COVERED

1, 4

Test 5

Equivalence partitions: None

PURPOSE

Test invocation of Calculator.calculate(), test If type is the character c then the function will pop the top value off the stack and return null.

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
c, random number array	null

TESTING REQUIREMENTS COVERED

5

Test 6

Equivalence partitions: None

PURPOSE

Test invocation of Calculator.calculate(), test If type is any other value then the function will return “unknown command” followed by type

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
x, empty char array	unknown command x

TESTING REQUIREMENTS COVERED

6

Test 7

Equivalence partitions: None

PURPOSE

Test invocation of Calculator.calculate(), test stack is empty then the program prints an error message.

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
=, empty char array	error: stack empty

TESTING REQUIREMENTS COVERED

7

Test 8

Equivalence partitions: Integer,Double, Char(not acceptable)

PURPOSE

Test invocation of Calculator.calculate(),and operation of Calculator.calculate()on an integer or double in the unexpected range.

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
100+ integer	error: stack full
100+ double	error: stack full
100+ char	NumberFormatException

TESTING REQUIREMENTS COVERED

1, 8

CSCE -361 - Whitebox Testing

Name as it appears on Canvas: __Xinyi Zhu
GitLab User ID: 1584

WhiteBox Test Requirement

100% statement coverage on this calculator class

Test 9

PURPOSE

Test invocation of the calculate class, test whether the loop terminates when the user types "q"

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
q	The program terminates

Test 10

PURPOSE

Test invocation of the calculate class, test getToken function can correctly notice the whitespace, tab, and line change

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
23\t89\t+\t=\tq	The program correctly accept the inputs
23\n89\n+\n=\nq23\n89\n+\n=\nq	The program correctly accept the inputs
23 89 + = q	The program correctly accept the inputs

Test 11

PURPOSE

Test invocation of the calculate class, getToken function can correctly notice the token is too long for integer and double number

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
8753984759834743789724 2 * = \n q	8753984759834743789... is too long
1.12875398475983474324 2 * = \n q	1.12875398475983474... is too long

Test 12

PURPOSE

Test invocation of the calculate class, test getToken function can correctly parsing a 20+ long number which end with ., and test getToken function can correctly parsing a incorrect that a double number has two .

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
1128753984759847430322. 2 * = q	None
1.243.3 2 + = \n q	None

Test 13

PURPOSE

Test invocation of the main class, test if the main function correctly executes when called

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
None	None

Test 14

PURPOSE

Test invocation of the calculate class, test if getToken function can correctly parse an incorrect string that contains integers or double and characters

SETUP

None needed

INPUTS and EXPECTED OUTPUTS

input	expected output
123c4567890 2 + = q	None
12.3c4567890 2 + = q	None