Hi I''m trying to get some Moq mockery going in IronRuby but Moq expects Expression<Func<MyObject, TReturn>> in his methods. Is there a way to make a RubyProc/lambda return an expression or convert it to an expression? --- Met vriendelijke groeten - Best regards - Salutations Ivan Porto Carrero Author of IronRuby in Action (http://manning.com/carrero) Steve Martin <http://www.brainyquote.com/quotes/authors/s/steve_martin.html> - "I''ve got to keep breathing. It''ll be my worst business mistake if I don''t." -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/ironruby-core/attachments/20090503/72c37940/attachment.html>
It cannot be done. Even if you could get to the ExpressionTree of a Ruby lambda,
the ExpressionTree would be loosely-bound as Ruby uses duck-typing, whereas Moq
expects a strongly-typed ExpressionTree so that it can figure out the exact
method that you are trying to associate some expectation with.
FWIW, Mark had also been playing with mocking, and in our discussions, we said
that the easiest mocking approach would be to use Ruby features like
method_missing, monkey-patching, etc (like rspec does). Ie. something like this:
def mock(clrInterface):
class ClrMock < clrInterface
# monkey-patch all of ?clrInterface.methods" here, and redirect to the
mocking framework
end
return ClrMock.new
end
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Ivan Porto Carrero
Sent: Sunday, May 03, 2009 3:18 AM
To: ironruby-core
Subject: [Ironruby-core] Building expressions
Hi
I''m trying to get some Moq mockery going in IronRuby but Moq expects
Expression<Func<MyObject, TReturn>> in his methods.
Is there a way to make a RubyProc/lambda return an expression or convert it to
an expression?
---
Met vriendelijke groeten - Best regards - Salutations
Ivan Porto Carrero
Author of IronRuby in Action (http://manning.com/carrero)
Steve
Martin<http://www.brainyquote.com/quotes/authors/s/steve_martin.html> -
"I''ve got to keep breathing. It''ll be my worst business
mistake if I don''t."
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Ivan, You may want to try Jeremy Mcanally''s stump<http://github.com/jeremymcanally/stump/tree/master>mocking framework. I haven''t used it much, so I can''t give any additional info on it. It may not be what you are wanting, but if you just need mocks, it may be worth a shot. Ryan Riley ryan.riley at panesofglass.org http://panesofglass.org/ http://wizardsofsmart.net/ On Sun, May 3, 2009 at 4:37 PM, Shri Borde <Shri.Borde at microsoft.com> wrote:> It cannot be done. Even if you could get to the ExpressionTree of a Ruby > lambda, the ExpressionTree would be loosely-bound as Ruby uses duck-typing, > whereas Moq expects a strongly-typed ExpressionTree so that it can figure > out the exact method that you are trying to associate some expectation with. > > > > FWIW, Mark had also been playing with mocking, and in our discussions, we > said that the easiest mocking approach would be to use Ruby features like > method_missing, monkey-patching, etc (like rspec does). Ie. something like > this: > > > > def mock(clrInterface): > > class ClrMock < clrInterface > > # monkey-patch all of ?clrInterface.methods" here, and redirect to the > mocking framework > > end > > return ClrMock.new > > end > > > > *From:* ironruby-core-bounces at rubyforge.org [mailto: > ironruby-core-bounces at rubyforge.org] *On Behalf Of *Ivan Porto Carrero > *Sent:* Sunday, May 03, 2009 3:18 AM > *To:* ironruby-core > *Subject:* [Ironruby-core] Building expressions > > > > Hi > > I''m trying to get some Moq mockery going in IronRuby but Moq expects > Expression<Func<MyObject, TReturn>> in his methods. > Is there a way to make a RubyProc/lambda return an expression or convert it > to an expression? > > --- > Met vriendelijke groeten - Best regards - Salutations > Ivan Porto Carrero > Author of IronRuby in Action (http://manning.com/carrero) > > Steve Martin<http://www.brainyquote.com/quotes/authors/s/steve_martin.html> - "I''ve got to keep breathing. It''ll be my worst business mistake if I > don''t." > > _______________________________________________ > Ironruby-core mailing list > Ironruby-core at rubyforge.org > http://rubyforge.org/mailman/listinfo/ironruby-core > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/ironruby-core/attachments/20090505/841dea29/attachment.html>
Yes I have since changed my approach. I''ve also talked with Mark about approaching this. The approach I take now is to generate a proxy to the object/class/interface that will record method calls. After recording you can then run verifications on those method calls. The way I generate the proxy for an interface came out of my talk with Mark. http://github.com/casualjim/caricature/blob/922bdcd11d9b0a1aa5500c3fe430483863d9041e/lib/caricature/proxy.rb#L92 But the deeper implication is then that when a library uses Expression<Func<,>> as parameters you cannot use it from ironruby at all? Not even by building the expression tree yourself? (I forgot to hit send apparently :)) --- Met vriendelijke groeten - Best regards - Salutations Ivan Porto Carrero GSM: +32.486.787.582 Blog: http://flanders.co.nz Twitter: http://twitter.com/casualjim Author of IronRuby in Action (http://manning.com/carrero) Emo Philips <http://www.brainyquote.com/quotes/authors/e/emo_philips.html> - "I got some new underwear the other day. Well, new to me." On Sun, May 3, 2009 at 11:37 PM, Shri Borde <Shri.Borde at microsoft.com>wrote:> It cannot be done. Even if you could get to the ExpressionTree of a Ruby > lambda, the ExpressionTree would be loosely-bound as Ruby uses duck-typing, > whereas Moq expects a strongly-typed ExpressionTree so that it can figure > out the exact method that you are trying to associate some expectation with. > > > > FWIW, Mark had also been playing with mocking, and in our discussions, we > said that the easiest mocking approach would be to use Ruby features like > method_missing, monkey-patching, etc (like rspec does). Ie. something like > this: > > > > def mock(clrInterface): > > class ClrMock < clrInterface > > # monkey-patch all of ?clrInterface.methods" here, and redirect to the > mocking framework > > end > > return ClrMock.new > > end > > > > *From:* ironruby-core-bounces at rubyforge.org [mailto: > ironruby-core-bounces at rubyforge.org] *On Behalf Of *Ivan Porto Carrero > *Sent:* Sunday, May 03, 2009 3:18 AM > *To:* ironruby-core > *Subject:* [Ironruby-core] Building expressions > > > > Hi > > I''m trying to get some Moq mockery going in IronRuby but Moq expects > Expression<Func<MyObject, TReturn>> in his methods. > Is there a way to make a RubyProc/lambda return an expression or convert it > to an expression? > > --- > Met vriendelijke groeten - Best regards - Salutations > Ivan Porto Carrero > Author of IronRuby in Action (http://manning.com/carrero) > > Steve Martin<http://www.brainyquote.com/quotes/authors/s/steve_martin.html> - "I''ve got to keep breathing. It''ll be my worst business mistake if I > don''t." > > _______________________________________________ > Ironruby-core mailing list > Ironruby-core at rubyforge.org > http://rubyforge.org/mailman/listinfo/ironruby-core > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/ironruby-core/attachments/20090505/0661d2ec/attachment.html>
Of course you should be able to build the expression tree manually ? though even
here, you may have trouble under .NET 3.5 as a result of the duplicated
namespace. (That issue goes away with .NET 4.)
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Ivan Porto Carrero
Sent: Tuesday, May 05, 2009 7:46 AM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Building expressions
Yes
I have since changed my approach. I''ve also talked with Mark about
approaching this.
The approach I take now is to generate a proxy to the object/class/interface
that will record method calls.
After recording you can then run verifications on those method calls. The way I
generate the proxy for an interface came out of my talk with Mark.
http://github.com/casualjim/caricature/blob/922bdcd11d9b0a1aa5500c3fe430483863d9041e/lib/caricature/proxy.rb#L92
But the deeper implication is then that when a library uses
Expression<Func<,>> as parameters you cannot use it from ironruby at
all? Not even by building the expression tree yourself?
(I forgot to hit send apparently :))
---
Met vriendelijke groeten - Best regards - Salutations
Ivan Porto Carrero
GSM: +32.486.787.582
Blog: http://flanders.co.nz
Twitter: http://twitter.com/casualjim
Author of IronRuby in Action (http://manning.com/carrero)
Emo Philips<http://www.brainyquote.com/quotes/authors/e/emo_philips.html>
- "I got some new underwear the other day. Well, new to me."
On Sun, May 3, 2009 at 11:37 PM, Shri Borde <Shri.Borde at
microsoft.com<mailto:Shri.Borde at microsoft.com>> wrote:
It cannot be done. Even if you could get to the ExpressionTree of a Ruby lambda,
the ExpressionTree would be loosely-bound as Ruby uses duck-typing, whereas Moq
expects a strongly-typed ExpressionTree so that it can figure out the exact
method that you are trying to associate some expectation with.
FWIW, Mark had also been playing with mocking, and in our discussions, we said
that the easiest mocking approach would be to use Ruby features like
method_missing, monkey-patching, etc (like rspec does). Ie. something like this:
def mock(clrInterface):
class ClrMock < clrInterface
# monkey-patch all of ?clrInterface.methods" here, and redirect to the
mocking framework
end
return ClrMock.new
end
From: ironruby-core-bounces at rubyforge.org<mailto:ironruby-core-bounces at
rubyforge.org> [mailto:ironruby-core-bounces at
rubyforge.org<mailto:ironruby-core-bounces at rubyforge.org>] On Behalf Of
Ivan Porto Carrero
Sent: Sunday, May 03, 2009 3:18 AM
To: ironruby-core
Subject: [Ironruby-core] Building expressions
Hi
I''m trying to get some Moq mockery going in IronRuby but Moq expects
Expression<Func<MyObject, TReturn>> in his methods.
Is there a way to make a RubyProc/lambda return an expression or convert it to
an expression?
---
Met vriendelijke groeten - Best regards - Salutations
Ivan Porto Carrero
Author of IronRuby in Action (http://manning.com/carrero)
Steve
Martin<http://www.brainyquote.com/quotes/authors/s/steve_martin.html> -
"I''ve got to keep breathing. It''ll be my worst business
mistake if I don''t."
_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org<mailto:Ironruby-core at rubyforge.org>
http://rubyforge.org/mailman/listinfo/ironruby-core
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