<s>
Negative	B-General_Concept
testing	I-General_Concept
is	O
a	O
method	O
of	O
testing	O
an	O
application	B-Application
or	O
system	O
that	O
ensures	O
that	O
the	O
plot	O
of	O
the	O
application	B-Application
is	O
according	O
to	O
the	O
requirements	O
and	O
can	O
handle	O
the	O
unwanted	O
input	O
and	O
user	O
behavior	O
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
is	O
also	O
known	O
as	O
failure	O
testing	O
or	O
error	O
path	O
testing	O
.	O
</s>
<s>
When	O
performing	O
negative	B-General_Concept
testing	I-General_Concept
exceptions	O
are	O
expected	O
.	O
</s>
<s>
This	O
shows	O
that	O
the	O
application	B-Application
is	O
able	O
to	O
handle	O
improper	O
user	O
behavior	O
.	O
</s>
<s>
The	O
purpose	O
of	O
negative	B-General_Concept
testing	I-General_Concept
is	O
to	O
prevent	O
the	O
application	B-Application
from	O
crashing	O
and	O
it	O
also	O
helps	O
improve	O
the	O
quality	O
of	O
an	O
application	B-Application
by	O
detecting	O
defects	O
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
helps	O
you	O
to	O
improve	O
the	O
testing	O
coverage	O
of	O
the	O
application	B-Application
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
makes	O
the	O
application	B-Application
more	O
stable	O
and	O
reliable	O
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
together	O
with	O
positive	O
testing	O
allows	O
users	O
to	O
test	O
the	O
application	B-Application
with	O
any	O
valid	O
(	O
or	O
invalid	O
)	O
input	B-General_Concept
data	I-General_Concept
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
is	O
done	O
to	O
check	O
that	O
the	O
product	O
deals	O
properly	O
with	O
the	O
circumstance	O
for	O
which	O
it	O
is	O
not	O
programmed	O
.	O
</s>
<s>
Both	O
positive	O
and	O
negative	B-General_Concept
testing	I-General_Concept
play	O
an	O
important	O
role	O
.	O
</s>
<s>
Positive	O
testing	O
ensures	O
that	O
the	O
application	B-Application
does	O
what	O
it	O
is	O
implied	O
for	O
and	O
performs	O
each	O
function	O
as	O
expected	O
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
is	O
opposite	O
of	O
positive	O
testing	O
.	O
</s>
<s>
Negative	B-General_Concept
testing	I-General_Concept
discovers	O
diverse	O
approaches	O
to	O
make	O
the	O
application	B-General_Concept
crash	I-General_Concept
and	O
handle	O
the	O
crash	B-General_Concept
effortlessly	O
.	O
</s>
<s>
In	O
this	O
parameter	O
,	O
test	O
scenarios	O
are	O
designed	O
in	O
such	O
a	O
way	O
that	O
it	O
covers	O
the	O
boundary	O
values	O
and	O
validates	O
how	O
the	O
application	B-Application
behaves	O
on	O
these	O
boundary	O
values	O
.	O
</s>
<s>
If	O
there	O
is	O
an	O
application	B-Application
that	O
accepts	O
Ids	O
ranging	O
from	O
0	O
–	O
255	O
.	O
</s>
<s>
Any	O
inputs	O
going	O
below	O
0	O
or	O
above	O
255	O
will	O
be	O
considered	O
invalid	O
and	O
will	O
constitute	O
negative	B-General_Concept
testing	I-General_Concept
.	O
</s>
<s>
The	O
input	B-General_Concept
data	I-General_Concept
may	O
be	O
divided	O
into	O
many	O
partitions	O
.	O
</s>
<s>
While	O
partitions	O
with	O
invalid	O
values	O
are	O
used	O
for	O
negative	B-General_Concept
testing	I-General_Concept
.	O
</s>
<s>
If	O
we	O
need	O
to	O
test	O
positive	O
numeric	O
values	O
,	O
then	O
the	O
first	O
partition	O
(	O
from	O
minus	O
ten	O
to	O
zero	O
)	O
is	O
used	O
in	O
negative	B-General_Concept
testing	I-General_Concept
.	O
</s>
