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Wolfram Language
Mockingbird
Tutorials
WritingMockTestsWithMockingbird
Guides
Mockingbird
Symbols
MockDefinitionGroup
MockDefinition
MockEvaluate
MockEvaluateReap
MockPropertyValuePatternTest
MockPropertyValueQ
MockSow
Wolfram`Mockingbird`
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Examples
(
6
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Basic Examples
(
2
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]
Evaluate an expression using a mocked version of the function
f
:
I
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2
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:
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[
f
[
x
_
]
:
=
E
x
p
a
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d
[
(
x
/
2
)
^
3
]
]
,
f
[
a
+
b
]
O
u
t
[
2
]
=
3
a
8
+
3
2
a
b
8
+
3
a
2
b
8
+
3
b
8
Outside of the mock evaluation,
f
is unmodified:
I
n
[
3
]
:
=
f
[
a
+
b
]
O
u
t
[
3
]
=
f
[
a
+
b
]
I
n
[
4
]
:
=
D
o
w
n
V
a
l
u
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s
[
f
]
O
u
t
[
4
]
=
{
}
—
—
—
Use
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f
i
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G
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to specify multiple, potentially interconnected definitions:
I
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[
1
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:
=
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[
{
f
[
x
_
]
:
=
g
[
x
^
2
]
,
g
[
y
_
]
:
=
y
*
2
}
]
,
f
[
4
2
]
O
u
t
[
1
]
=
3
5
2
8
S
c
o
p
e
(
1
)
O
p
t
i
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n
s
(
1
)
A
p
p
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i
c
a
t
i
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n
s
(
1
)
P
r
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p
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r
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s
&
R
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a
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s
(
1
)
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