Application of equivalence class partition method of "Software testing"

• Example--editbox
  • Allow 1 to 6 English characters or numbers, press OK to end
  • Valid equivalence classes and invalid equivalence classes

Valid equivalence classes	Invalid equivalence class
E1: Length: 1 to 6	T1: Length: 0,7
E2: Character: a-z,a-z,0-9	T2: Characters: English, characters other than numbers, control characters, punctuation

• • Test Case:

Number	Test Cases	Expected output
1 (E1,E2)	A	Valid input
2 (E1,E2)	Z	Valid input
3 (E1,E2)	A	Valid input
4 (E1,E2)	Z	Valid input
5 (E1,E2)	0	Valid input
6 (E1,E2)	9	Valid input
7 (E1,E2)	Aaaaaa	Valid input
8 (E1,E2)	Aaaaaa	Valid input
9 (E1,E2)	000000	Valid input
Ten (E1,e2)	Aa0aa0	Valid input
One (E1,T2)	Space	Invalid input
(E1,T2)	Ff	Invalid input
(E1,T2)	,	Invalid input
(E1,T2)	Space (6)	Invalid input
(E1,T2)	FF (6)	Invalid input
(E1,T2)	,,,,,,	Invalid input
(E2,T1)	Null	Invalid input
(E2,T1)	Aaaaaaa	Invalid input
(E2,T1)	Aaaaaaa	Invalid input
(E2,T1)	0000000	Invalid input

• Example--nextdata
  • The Nextdata function contains three variables: Month,day,year, the output of the function is the day after the input date.
  • The input variable month,day,year is required to be an integer value, and the following conditions are met:
    • 1≤month≤12
    • 1≤day≤31
    • 1812≤year≤2012
  • Equivalence class Partitioning:

Valid equivalence classes	Invalid equivalence class
M1:1≤month≤12	m2:month<1
	M3:month>12
D1:1≤day≤31	d2:day<1
	D3:day>31
y1:1812≤year≤2012	y2:year<1812
	y3:year>2012

• • Test Case:

Number	Year	Month	Day	Expected output
1	1812	1	1	1812/1/2
2	1812	1	31	1812/2/1
3	1812	2	29	1812/3/1
4	1812	2	30	Date is illegal
5	1813	2	28	1813/3/1
6	1813	2	29	Date is illegal
7	1813	12	31	1814/1/1
8	2012	12	31	2013/1/1
9	1811	6	15	Year input is not in the legal range
10	2013	6	15	Year input is not in the legal range
11	1912	0	15	Month input is not in the legal range
12	1912	13	15	Month input is not in the legal range
13	1912	6	0	Day input is not in the legal range
14	1912	6	32	Day input is not in the legal range
15	1811	0	15	Year,month input is not in the legal range
16	1811	6	0	Year,day input is not in the legal range
17	1912	0	0	Month,day input is not in the legal range
18	1811	0	0	Year,month,day input is not in the legal range

Application of equivalence class partition method of "Software testing"