<s>
SUnit	B-Library
is	O
a	O
unit	O
testing	O
framework	O
for	O
the	O
programming	O
language	O
Smalltalk	B-Application
.	O
</s>
<s>
It	O
is	O
the	O
original	O
source	O
of	O
the	O
xUnit	B-Library
design	O
,	O
originally	O
written	O
by	O
one	O
of	O
the	O
creators	O
of	O
Extreme	O
Programming	O
,	O
Kent	O
Beck	O
.	O
</s>
<s>
SUnit	B-Library
allows	O
writing	O
tests	O
and	O
checking	O
results	O
in	O
Smalltalk	B-Application
.	O
</s>
<s>
SUnit	B-Library
was	O
originally	O
described	O
by	O
Beck	O
in	O
""	O
(	O
1989	O
)	O
,	O
then	O
published	O
as	O
chapter	O
30	O
"	O
Simple	O
Smalltalk	B-Application
Testing	O
"	O
,	O
in	O
the	O
book	O
Kent	O
Beck	O
's	O
Guide	O
to	O
Better	O
Smalltalk	B-Application
by	O
Kent	O
Beck	O
,	O
Donald	O
G	O
.	O
Firesmith	O
(	O
Editor	O
)	O
(	O
Publisher	O
:	O
Cambridge	O
University	O
Press	O
,	O
Pub	O
.	O
</s>
