Changing values of objects passed to mocks
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Todd
Jun 30, 2010, 9:47:57 PM6/30/10
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Hi all,
I've been using Mockito for a while and I love it, it makes my
testing much cleaner and easier. I've found one mock I can't seem to
figure out. Our service tier calls our data access tier. Our access
tier assigns Id's to objects when they're saved. I need to hook into
a callback so that I can modify arguments that are passed to my mock
at runtime. I found this, but it doesn't quite do what I want.
http://mockito.googlecode.com/svn/tags/latest/javadoc/org/mockito/Mockito.html#11
Basically, here's the flow I need.
public void save(Entity e)
mock save with given argument to set the ID into the argument e
use that argument (e.getId()) in assertions in my other tests
The issue is that save(Entity e) changes the state of e, which the
caller then uses. In my case, the caller is the service tier I'm unit
testing. his is very common with data access frameworks. What's the
best was to do this?
I've been using Mockito for a while and I love it, it makes my
testing much cleaner and easier. I've found one mock I can't seem to
figure out. Our service tier calls our data access tier. Our access
tier assigns Id's to objects when they're saved. I need to hook into
a callback so that I can modify arguments that are passed to my mock
at runtime. I found this, but it doesn't quite do what I want.
http://mockito.googlecode.com/svn/tags/latest/javadoc/org/mockito/Mockito.html#11
Basically, here's the flow I need.
public void save(Entity e)
mock save with given argument to set the ID into the argument e
use that argument (e.getId()) in assertions in my other tests
The issue is that save(Entity e) changes the state of e, which the
caller then uses. In my case, the caller is the service tier I'm unit
testing. his is very common with data access frameworks. What's the
best was to do this?
szczepiq
Jul 1, 2010, 4:04:33 AM7/1/10
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Hey,
How about this:
doAnswer(new AssignID(10)).when(daoMock).save(any());
Implement AssignID class to do whatever you like with the arguments passed to the mock. Then you can play with 'extract method' to make it a bit cleaner:
assignID(10).when(daoMock).save(any());
Cheers,
Szczepan
How about this:
doAnswer(new AssignID(10)).when(daoMock).save(any());
Implement AssignID class to do whatever you like with the arguments passed to the mock. Then you can play with 'extract method' to make it a bit cleaner:
assignID(10).when(daoMock).save(any());
Cheers,
Szczepan
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Todd Nine
Jul 1, 2010, 3:58:44 PM7/1/10
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Thanks for that Szczepan. Dumb question, but do I simply create my own
static method to create the "extract method", or is there some mockito
magic I can utilize?
static method to create the "extract method", or is there some mockito
magic I can utilize?
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todd
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szczepiq
Jul 2, 2010, 7:46:45 AM7/2/10
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Your own method. No Mockito magic this time :)
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