Text Field Validations

Need to validate text fields against
1. Null
2. Not Null.
3. whether it allows any Special Characters.
4. whether it allows numeric contents.
5. Maximum length of the field etc.

1) From the requirements find out what the behaviour of the text field in
question should be. Things you need to know are :
what should happen if field left blank
what special characters are allowed
is it an alpha, nemeric or alphanumeric field etc.etc.

2) Write manual tests for doing what you want. This will create a structure
to form the basis of your WR tests.

3) now create your WR scripts. I suggest that you use data driven tests and
use Excel spreadsheets for your inputs instead of having user input.
For example the following structure will test whether the text field will
accept special characters :

open the data table
for each value in the data table
get value
insert value into text field
attempt to use the value inserted
if result is as expected
report pass
else
report fail
next value in data table

in this case the data table will contain all the special charcaters