Test Case For Factorial

Test Case For Factorial: n! means n(n-1)(n-2)……3,2,1 First Check the given integer is positive If the given integer is negative,n! is not defined If the given number is a fraction,n! is not defined check the given number is 0,n! is 1hope I’ll get an idea…if any wrong with this….correct me.

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n! :n(n-1)(n-2)…..3,2,1.First TC: Check the given integer is positive If the given number is negative, ExpectedResult: n! is not defined If the given integer is a fraction. n! is not defined TC: check the given number is 0 (0!=1) ER: 1 is displayed Hope I’ll get an idea…correct if it’s wrong

Factorials are represented by n!

Examples:

3! = 1 * 2 * 3 = 6
4! = 1 * 2 * 3 * 4 = 24
5! = 1 * 2 * 3 * 4 * 5 = 120

A factorial program is easy to test because you are simply testing the input value for an integer variable related to a single text box and then verifying its output value.  Here are the test cases:

Test Case For Factorial

Determine the maximum integer value that the computer can calculate its factorial.  This value becomes the upper boundary.

Positive Test Cases

• Submit integer value at lower boundary [ 0 ]
• Submit integer value at lower boundary +1 [ 1 ]
• Submit integer value at the upper boundary -1
• Submit integer value at the upper boundary

Negative Test Cases

• Submit integer value at upper boundary +1
• Submit integer value with leading 0
• Submit integer value with leading plus sign [+]
• Submit integer value with the leading minus sign [-]
• Submit integer value with leading space
• Submit number with a decimal point
• Submit number with the letter ‘e’ in it
• Submit alpha character(s)
• Submit special character(s) [ex: !@#$^]
• Submit with only space
• Submit with nothing entered

Factorial of a given number should not be negative numbers, decimal point numbers, alpha characters, special characters, and if it is a function, it takes only one parameter.