Amazon Interview Question Quality Assurance Engineers
Team: Amazon Wireless
Country: India
Interview Type: Written Test
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
int checkmail(char a[],int n);
void main()
{
char a[20];
int n,result;
clrscr();
cout<<"Enter an email id:";
cin.getline(a,20);
n=strlen(a);
result=checkmail(a,n);
if(result==0)
cout<<"It is an invalid e-mail id";
else
cout<<"It is a valid e-mail id";
getch();
}
int checkmail(char a[],int n)
{
int ka=0;
for(int i=0;i<n;i++)
{
if(isalpha(a[i]))
continue;
if((a[i]=='@') && (i!=0) && isalpha(a[i+1]))
{
ka=i;
if(a[n-3]=='.' && a[n-2]=='c' && a[n-1]=='o' && a[n]=='m')
return 1;
}
if((a[i]=='@') && i==0)
return 0;
}
if(i==n && ka==0)
return 0;
}
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
int checkmail(char a[],int n);
void main()
{
char a[20];
int n,result;
clrscr();
cout<<"Enter an email id:";
cin.getline(a,20);
n=strlen(a);
result=checkmail(a,n);
if(result==0)
cout<<"It is an invalid e-mail id";
else
cout<<"It is a valid e-mail id";
getch();
}
int checkmail(char a[],int n)
{
int ka=0;
for(int i=0;i<n;i++)
{
if(isalpha(a[i]))
continue;
if((a[i]=='@') && (i!=0) && isalpha(a[i+1]))
{
ka=i;
if(a[n-3]=='.' && a[n-2]=='c' && a[n-1]=='o' && a[n]=='m')
return 1;
}
if((a[i]=='@') && i==0)
return 0;
}
if(i==n && ka==0)
return 0;
}
Scanner scanner = new Scanner(System.in);
String line = scanner.nextLine();
Pattern pattern = Pattern.compile("[A-Z0-9._]+@[A-Z0-9.-]+\\.[A-Z]{2,4}");
Matcher matcher = pattern.matcher(line.toUpperCase());
if(matcher.matches()){
System.out.println("E-mail validated!");
}
else{
System.out.println("Invalid email!!");
}
we have to give test data not code
1. Valid Test data
email@domain.com
"email"@domain.com
email@subdomain.domain.com
email1-email2@domain.com
email1.email2@domain.com
email@121.121.121.121
email@[121.121.121.121]
123451331@domain.com
2.Invalid Test Data
email //no @
email@domain@domain.com //more than 1 @not allowed
email"xyz"zmn@domain.com //double quotes in mid of local part of an email not allowed
email.@domain.com //trailing dot in local part not allowed
.email@domain.com
email@domain..com //double dot not allowed
email@1234.1223.1233.13233 //invalid ip adress
email.domain.com //@ missing
email@domain //no top level domain
we have to give test data not code
1. Valid Test data
email@domain.com
"email"@domain.com
email@subdomain.domain.com
email1-email2@domain.com
email1.email2@domain.com
email@121.121.121.121
email@[121.121.121.121]
123451331@domain.com
2.Invalid Test Data
email //no @
email@domain@domain.com //more than 1 @not allowed
email"xyz"zmn@domain.com //double quotes in mid of local part of an email not allowed
email.@domain.com //trailing dot in local part not allowed
.email@domain.com
email@domain..com //double dot not allowed
email@1234.1223.1233.13233 //invalid ip adress
email.domain.com //@ missing
email@domain //no top level domain
we have to give test data not code 1. Valid Test data email@domain.com "email"@domain.com email@subdomain.domain.com email1-email2@domain.com email1.email2@domain.com email@121.121.121.121 email@[121.121.121.121] 123451331@domain.com 2.Invalid Test Data email //no @ email@domain@domain.com //more than 1 @not allowed email"xyz"zmn@domain.com //double quotes in mid of local part of an email not allowed email.@domain.com //trailing dot in local part not allowed .email@domain.com email@domain..com //double dot not allowed email@1234.1223.1233.13233 //invalid ip adress email.domain.com //@ missing email@domain //no top level domain
import re
import random
import string
def testEmail():
# some useful constraints on valid email addresses:
# name@provider.domain or name1st.name2nd@subdomain.domain
# name, name1st, name2nd may contain letters, numbers, and {-,_,+}
# provider and (sub)domain names contain only letters and
# their lengths are restricted to 20 letters
# len(email) <= 254, regex, char and lengths distributions can be adjusted to make data look more natural
email = '[\w|\-|\+]+(?:\.(?:[\w|\-|\+]+))?@\w+(?:\.\w{1,20}){1,10}'
rx = re.compile(email)
# i) create some invalid entries
print('Test for invalid entries: ')
for _ in list(range(10)):
length = random.SystemRandom().randint(1,254)
email = ''.join(random.SystemRandom().choice(string.printable) for _ in range(length))
# invalidate if by chance correct
if email.endswith(r'@\w+(?:\.\w{1,20}){1,10}'):
email = email.replace('@', '')
if rx.match(email) is not None:
print('\tfalse positive: ', email)
else:
print('\ttrue negative: ', email)
# ii) create valid entries
print('Test for valid entries: ')
for _ in list(range(10)):
min_len = 5 # @t.tk
max_len = 254
state = 0
email = ''
while (state != 3):
if state == 0: # choose 1st usr name
l1 = random.SystemRandom().randint(1, max_len-min_len)
email = ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits + '-_+') for _ in range(l1))
# prefix 2 ?
l2 = 0
if random.SystemRandom().randint(1, 100) % 2 == 0:
l2 = random.SystemRandom().randint(1, max_len-min_len-l1)
email += '.'
email += ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits + '-_+') for _ in range(l2))
state = 1
if state == 1: # add provider
l3 = min(20, int(random.SystemRandom().weibullvariate(5, 1))+2)
email += '@' + ''.join(random.SystemRandom().choice(string.ascii_letters) for _ in range(l3))
state = 2
if state == 2 and len(email) < max_len: # add domain and optional subdomains
l4 = min(10, int(random.SystemRandom().weibullvariate(5, 1))+2)
email += '.' + ''.join(random.SystemRandom().choice(string.ascii_letters) for _ in range(l4))
if random.SystemRandom().randint(1, 100) % 2 == 0: # exit state 2 with prob. 0.5
state = 3
if len(email) > max_len:
state = 0 # repeat
# test whether email really matches
if rx.match(email.lower()) is not None:
print('\ttrue positive: ', email)
else:
print('\tfalse negative: ', email)
if __name__ == '__main__':
testEmail()
import re
import random
import string
def testEmail():
# some useful constraints on valid email addresses:
# name@provider.domain or name1st.name2nd@subdomain.domain
# name, name1st, name2nd may contain letters, numbers, and {-,_,+}
# provider and (sub)domain names contain only letters and
# their lengths are restricted to 20 letters
# len(email) <= 254, regex, char, and lengths distribution can be adjusted to make data more natural
email = '[\w|\-|\+]+(?:\.(?:[\w|\-|\+]+))?@\w+(?:\.\w{1,20}){1,10}'
rx = re.compile(email)
# i) create some invalid entries
print('Test for invalid entries: ')
for _ in list(range(10)):
length = random.SystemRandom().randint(1,254)
email = ''.join(random.SystemRandom().choice(string.printable) for _ in range(length))
# invalidate if by chance correct
if email.endswith(r'@\w+(?:\.\w{1,20}){1,10}'):
email = email.replace('@', '')
if rx.match(email) is not None:
print('\tfalse positive: ', email)
else:
print('\ttrue negative: ', email)
# ii) create valid entries
print('Test for valid entries: ')
for _ in list(range(10)):
min_len = 5 # @t.tk
max_len = 254
state = 0
email = ''
while (state != 3):
if state == 0: # choose 1st usr name
l1 = random.SystemRandom().randint(1, max_len-min_len)
email = ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits + '-_+') for _ in range(l1))
# prefix 2 ?
l2 = 0
if random.SystemRandom().randint(1, 100) % 2 == 0:
l2 = random.SystemRandom().randint(1, max_len-min_len-l1)
email += '.'
email += ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits + '-_+') for _ in range(l2))
state = 1
if state == 1: # add provider
l3 = min(20, int(random.SystemRandom().weibullvariate(5, 1))+2)
email += '@' + ''.join(random.SystemRandom().choice(string.ascii_letters) for _ in range(l3))
state = 2
if state == 2 and len(email) < max_len: # add domain and optional subdomains
l4 = min(10, int(random.SystemRandom().weibullvariate(5, 1))+2)
email += '.' + ''.join(random.SystemRandom().choice(string.ascii_letters) for _ in range(l4))
if random.SystemRandom().randint(1, 100) % 2 == 0: # exit state 2 with prob. 0.5
state = 3
if len(email) > max_len:
state = 0 # repeat
# test whether email really matches
if rx.match(email.lower()) is not None:
print('\ttrue positive: ', email)
else:
print('\tfalse negative: ', email)
if __name__ == '__main__':
testEmail()
Test data to check email id field( textbox)
1.Enter a blank data- empty text field
2.Valid data format of an email id. abc@mail.com, abc@mail.in(spaces,alphabets,numbers, special symbols etc)
3.Invalid format of an email id. @$#@mail.in , "hello"$gmail.com
4.One or more values in same field.
For all conditions ,check proper error messages are generated.
public class TestEmailFormat {
private static final Pattern emailPattern = Pattern.compile("[\\w\\.]+@[\\w\\.]+.com");
public void main(String[] args) {
if(args.length == 0) {
System.out.println("Please provide one or more strings to validate");
return;
}
for(String input:args) {
if(emailPattern.matches(input)) {
System.out.println(input + "has valid email syntax");
} else {
System.out.println(input + "is not a valid email address");
}
}
}
}
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
int checkmail(char a[],int n);
void main()
{
char a[20];
int n,result;
clrscr();
cout<<"Enter an email id:";
cin.getline(a,20);
n=strlen(a);
result=checkmail(a,n);
if(result==0)
cout<<"It is an invalid e-mail id";
else
cout<<"It is a valid e-mail id";
getch();
}
int checkmail(char a[],int n)
{
int ka=0;
for(int i=0;i<n;i++)
{
if(isalpha(a[i]))
continue;
if((a[i]=='@') && (i!=0) && isalpha(a[i+1]))
{
ka=i;
if(a[n-3]=='.' && a[n-2]=='c' && a[n-1]=='o' && a[n]=='m')
return 1;
}
if((a[i]=='@') && i==0)
return 0;
}
if(i==n && ka==0)
return 0;
}
we have to give test data not code
- Anonymus July 28, 20151. Valid Test data
email@domain.com
"email"@domain.com
email@subdomain.domain.com
email1-email2@domain.com
email1.email2@domain.com
email@121.121.121.121
email@[121.121.121.121]
123451331@domain.com
2.Invalid Test Data
email //no @
email@domain@domain.com //more than 1 @not allowed
email"xyz"zmn@domain.com //double quotes in mid of local part of an email not allowed
email.@domain.com //trailing dot in local part not allowed
.email@domain.com
email@domain..com //double dot not allowed
email@1234.1223.1233.13233 //invalid ip adress
email.domain.com //@ missing
email@domain //no top level domain