How to write testcase for Email id ?

How to write testcase for Email id ?

EMAIL ADDRESS TEST CASE

So u want 2 enter a email id , let us take the requirements as following

REQUIREMENTS :

• consider a text box.
• It shud accept only 10 characters - 20 characters
• " " " @, _ , . symbols
• " " " small alphabets
• Email Id should be like the same Format: Local-Part@Domail Name

All our test conditions we can divided into two parts,

Positive conditions:

1) Email should be contain the Local-Part.
Eg. rohan@yahoo.com
2) Email should conatain a Domain Name.
Eg. rohan@yahoo.com
3) "@" symbol should be there in between Local Part and Domain Name.
Eg. rohan@yahoo.com
4) Minimum 1 dot should be there.
Eg. rohan@yahoo.com
5) Maximum 2 dots can be there.
Eg. rohan@yahoo.co.in
6) "underscores" (_) pecial character can be allowed.
Eg. rohan_roy@yahoo.com

Negative Conditions:

1) Local Part should not conatin any character or Numeric numbers.
Eg. $$**%%@yahoo.com
2) Domain name not valid.
Eg. rohan@gfdgfgfsdg.gfddsg
3) "@" not used in between Local Part and Domain Name.
Eg. rohan&yahoo.com
4) Maximum "dots" (.) exceeded in the domain name - 3 dots.
Eg. rohan@yahoo.co.in.in
5) Domain Name contais special characters.
Eg. rohan@***$$$.com