Fixtures may compare expected values provided in cells to actual values provided by the system under test.

CellMatching
actual type	actual value	expected value		matches
string	aaa	aaa		True		a string is equal to expected
string	aaa	bbb		False		a string is not equal to expected
int	5	5		True		a number is equal to expected
int	5	6		False		a number is not equal to expected
int	5	xxx		Exception		a number doesn't match an invalid value

Special symbols and keywords can be used in the expected value cells.

Numbers can use comparison operators.

CellMatching
actual type	actual value	expected value		matches
int	5	>4		True
int	5	>5		False
int	5	>=4		True
int	5	>=5		True
int	5	>=6		False
decimal	4.999999999999999999999	<5		True		comparisons work for decimals
decimal	5	<5		False
double	.9999999999E-18	<=1E-18		True		and for doubles
double	1E-18	<=1E-18		True
double	1.0000000000001E-18	<=1E-18		False
int	5			Exception		comparison fails with an invalid value
string	5	>4		False		comparison operators are only for numbers
byte	5	>4		True		here's the other valid types for comparisons
sbyte	5	>4		True
float	5.0	>4.0		True
uint	5	>4		True
long	5	>4		True
ulong	5	>4		True
short	5	>4		True
ushort	5	>4		True

Numeric comparisons can be combined with symbol recall.

CellMatching
actual type	actual value	expected value		matches	expected cell
int	3	><<four		False	<span class="fit_grey">3 </span>&gt;&lt;&lt;four<span class="fit_grey"> 4</span>		symbol values can be recalled for comparison
int	3	< <<four		True	<span class="fit_grey">3 </span>&lt; &lt;&lt;four<span class="fit_grey"> 4</span>		use whitespace to disambiguate 'less than' and 'recall'
int	3	'<<four'		False	&lt;&lt;four<span class="fit_grey"> 4</span>		this is recall, not a comparison

When a cell match fails, the Cell Differences are displayed.