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cpp-libs
Actor Framework
Commits
a50d4e81
Commit
a50d4e81
authored
Dec 15, 2022
by
Dominik Charousset
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Improve coverage of from_generator tests
parent
900049d2
Changes
1
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1 changed file
with
44 additions
and
3 deletions
+44
-3
libcaf_core/test/flow/generation.cpp
libcaf_core/test/flow/generation.cpp
+44
-3
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libcaf_core/test/flow/generation.cpp
View file @
a50d4e81
...
...
@@ -331,7 +331,8 @@ SCENARIO("asynchronous buffers can generate flow items") {
namespace
{
class
custom_generator
{
// Generates 7 integers and then calls on_complete.
class
i7_generator
{
public:
using
output_type
=
int
;
...
...
@@ -351,14 +352,36 @@ private:
int
value_
=
1
;
};
// Generates 3 integers and then calls on_error.
class
broken_generator
{
public:
using
output_type
=
int
;
template
<
class
Step
,
class
...
Steps
>
void
pull
(
size_t
n
,
Step
&
step
,
Steps
&
...
steps
)
{
for
(
size_t
i
=
0
;
i
<
n
;
++
i
)
{
if
(
value_
>
3
)
{
auto
err
=
make_error
(
sec
::
runtime_error
,
"something went wrong"
);
step
.
on_error
(
err
,
steps
...);
return
;
}
else
if
(
!
step
.
on_next
(
value_
++
,
steps
...))
{
return
;
}
}
}
private:
int
value_
=
1
;
};
}
// namespace
SCENARIO
(
"users can provide custom generators"
)
{
GIVEN
(
"a
lifted
implementation of the generator concept"
)
{
GIVEN
(
"a
n
implementation of the generator concept"
)
{
WHEN
(
"subscribing to its output"
)
{
THEN
(
"the observer receives the generated values"
)
{
auto
snk
=
flow
::
make_passive_observer
<
int
>
();
auto
f
=
custom
_generator
{};
auto
f
=
i7
_generator
{};
ctx
->
make_observable
().
from_generator
(
f
).
subscribe
(
snk
->
as_observer
());
CHECK_EQ
(
snk
->
state
,
flow
::
observer_state
::
subscribed
);
CHECK
(
snk
->
buf
.
empty
());
...
...
@@ -373,6 +396,24 @@ SCENARIO("users can provide custom generators") {
}
}
}
GIVEN
(
"an implementation of the generator concept that calls on_error"
)
{
WHEN
(
"subscribing to its output"
)
{
THEN
(
"the observer receives the generated values followed by an error"
)
{
auto
snk
=
flow
::
make_passive_observer
<
int
>
();
auto
f
=
broken_generator
{};
ctx
->
make_observable
().
from_generator
(
f
).
subscribe
(
snk
->
as_observer
());
CHECK_EQ
(
snk
->
state
,
flow
::
observer_state
::
subscribed
);
CHECK
(
snk
->
buf
.
empty
());
CHECK
(
snk
->
subscribed
());
snk
->
request
(
27
);
ctx
->
run
();
CHECK_EQ
(
snk
->
buf
,
ivec
({
1
,
2
,
3
}));
if
(
CHECK
(
snk
->
aborted
()))
{
CHECK_EQ
(
snk
->
err
,
caf
::
sec
::
runtime_error
);
}
}
}
}
}
END_FIXTURE_SCOPE
()
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