<s>
Cucumber	B-Application
is	O
a	O
software	O
tool	O
that	O
supports	O
behavior-driven	O
development	O
(	O
BDD	O
)	O
.	O
</s>
<s>
Central	O
to	O
the	O
Cucumber	B-Application
BDD	O
approach	O
is	O
its	O
ordinary	O
language	O
parser	O
called	O
Gherkin	O
.	O
</s>
<s>
As	O
such	O
,	O
Cucumber	B-Application
allows	O
the	O
execution	O
of	O
feature	O
documentation	O
written	O
in	O
business-facing	O
text	O
.	O
</s>
<s>
Cucumber	B-Application
was	O
originally	O
written	O
in	O
the	O
Ruby	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
and	O
was	O
originally	O
used	O
exclusively	O
for	O
Ruby	B-Language
testing	O
as	O
a	O
complement	O
to	O
the	O
RSpec	B-Application
BDD	O
framework	B-Architecture
.	O
</s>
<s>
Cucumber	B-Application
now	O
supports	O
a	O
variety	O
of	O
different	O
programming	O
languages	O
through	O
various	O
implementations	O
,	O
including	O
Java	B-Language
and	O
JavaScript	B-Language
.	O
</s>
<s>
The	O
open	O
source	O
port	O
of	O
Cucumber	B-Application
in	O
.NET	B-Application
is	O
called	O
SpecFlow	B-Application
.	O
</s>
<s>
Gherkin	O
is	O
the	O
language	O
that	O
Cucumber	B-Application
uses	O
to	O
define	O
test	O
cases	O
.	O
</s>
<s>
In	O
addition	O
to	O
providing	O
a	O
script	O
for	O
automated	B-Application
testing	I-Application
,	O
Gherkin	O
's	O
natural	O
language	O
syntax	O
is	O
designed	O
to	O
provide	O
simple	O
documentation	O
of	O
the	O
code	O
under	O
test	O
.	O
</s>
<s>
Syntax	O
is	O
centered	O
around	O
a	O
line-oriented	B-Language
design	I-Language
,	O
similar	O
to	O
that	O
of	O
Python	B-Language
.	O
</s>
<s>
Cucumber	B-Application
comes	O
with	O
a	O
built-in	O
command	O
line	O
interface	O
that	O
covers	O
a	O
comprehensive	O
list	O
of	O
instructions	O
.	O
</s>
<s>
Like	O
most	O
command	O
line	O
tools	O
,	O
cucumber	B-Application
provides	O
the	O
--help	O
option	O
that	O
provides	O
a	O
summary	O
of	O
arguments	O
the	O
command	O
accepts	O
.	O
</s>
<s>
Cucumber	B-Application
command	O
line	O
can	O
be	O
used	O
to	O
quickly	O
run	O
defined	O
tests	O
.	O
</s>
<s>
Cucumber	B-Application
makes	O
it	O
easy	O
to	O
catch	O
bugs	O
in	O
the	O
code	O
with	O
the	O
--backtrace	O
option	O
.	O
</s>
