Equivalence Partitioning
1. register with a valid емейлом-prucsveta@gmail.com
2. register with a valid phone number- + 380976044892
3. register with a non-valid емейлом-prucsveta.com
4. register with a non-valid phone number- + 3809760448924

Equivalence Partitioning
1. enter a number less than 18 in the Input field (16)
2. enter in the Input field a number from 18 to 99 ( 72)
3. enter in the Input field a number greater than 99 (102)

Boundary values
To register on the site, the password must be at least 6 and not more than 15.
1. enter a password with less than 6 characters.
2. Enter a password with more than 15 characters.
3. Enter a password with 6 characters.
4. Enter the password with the number of characters 15.

Boundary values
1. Enter Input 17 in the field.
2. Enter Input 18 in the field.
3. Enter Input 99 in the field.
4. Enter Input 100 in the field.

Research testing
1. enter a space in the Name field.
2. enter a valid Name-Svetlana in the field.
3. Enter Cyrillic letters in the phone number field.
4. enter in the field a valid phone number- + 380976044894.