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Jmock2 Object creation
by ravisankarvivek
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Hi, I am new to JMock2 and I am trying to create a Mock object. My code goes like this. I have a class X which implements a method fun(); The class is perfectly implemented, no issues on that. My test case framework: [code] public class XTest { @Test public void testFun(){ Mockery context = new JUnit4Mockery(); X t = context.mock(X.class) } } [/code] This gives an error msg which says X is not an interface!! --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email |
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Re: Jmock2 Object creation
by Nat Pryce
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It sounds like X is not an interface.
You can either 1) Extract an interface from the class and mock that. 2) Use the jmock-legacy extension that adds support for testing legacy code by letting you mock classes. --Nat 2008/7/1 Vivek <vivmbbs@...>: > > Hi, > > I am new to JMock2 and I am trying to create a Mock object. My code goes like > this. I have a class X which implements a method fun(); The class is perfectly > implemented, no issues on that. > > My test case framework: > [code] > public class XTest { > > @Test > public void testFun(){ > Mockery context = new JUnit4Mockery(); > X t = context.mock(X.class) > > } > > } > [/code] > > This gives an error msg which says X is not an interface!! > > > --------------------------------------------------------------------- > To unsubscribe from this list, please visit: > > http://xircles.codehaus.org/manage_email > > > --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email |
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Re: Jmock2 Object creation
by ravisankarvivek
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So is it like, I can mock only an interface ? Can't I mock a class ?
-Vivek On Tue, Jul 1, 2008 at 2:59 PM, Nat Pryce <nat.pryce@...> wrote: It sounds like X is not an interface. |
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Re: Jmock2 Object creation
by Nat Pryce
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Read the second option below.
--Nat 2008/7/1 Vivek R <vivmbbs@...>: > So is it like, I can mock only an interface ? Can't I mock a class ? > > -Vivek > > On Tue, Jul 1, 2008 at 2:59 PM, Nat Pryce <nat.pryce@...> wrote: >> >> It sounds like X is not an interface. >> >> You can either >> >> 1) Extract an interface from the class and mock that. >> >> 2) Use the jmock-legacy extension that adds support for testing legacy >> code by letting you mock classes. >> >> --Nat >> >> 2008/7/1 Vivek <vivmbbs@...>: >> > >> > Hi, >> > >> > I am new to JMock2 and I am trying to create a Mock object. My code goes >> > like >> > this. I have a class X which implements a method fun(); The class is >> > perfectly >> > implemented, no issues on that. >> > >> > My test case framework: >> > [code] >> > public class XTest { >> > >> > @Test >> > public void testFun(){ >> > Mockery context = new JUnit4Mockery(); >> > X t = context.mock(X.class) >> > >> > } >> > >> > } >> > [/code] >> > >> > This gives an error msg which says X is not an interface!! >> > >> > >> > --------------------------------------------------------------------- >> > To unsubscribe from this list, please visit: >> > >> > http://xircles.codehaus.org/manage_email >> > >> > >> > >> >> --------------------------------------------------------------------- >> To unsubscribe from this list, please visit: >> >> http://xircles.codehaus.org/manage_email >> >> > > --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email |
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Re: Jmock2 Object creation
by ravisankarvivek
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I have mocked the class. Thanks Nat. :).
Have one more query. I have a function which returns a particular value if u call it say 'x' times. Once you call the function (x + 1)th time, it throws an Exception. This function f() is present in a class X; I have created a mock object for class X; context.checking( new Expectations() { exactly(x).of(..........) will (returnValue(new Y())); }); How do I write the expectation for the (x+1)th time ? Thanks Vivek On Tue, Jul 1, 2008 at 9:22 PM, Nat Pryce <nat.pryce@...> wrote: Read the second option below. |
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Re: Jmock2 Object creation
by Nat Pryce
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2008/7/2 Vivek R <vivmbbs@...>:
> I have a function which returns a particular value if u call it say 'x' > times. Once you call the function (x + 1)th time, it throws an Exception. > This function f() is present in a class X; > > I have created a mock object for class X; > > context.checking( new Expectations() { > exactly(x).of(..........) will (returnValue(new Y())); > }); > > How do I write the expectation for the (x+1)th time ? Just add another expectation after the first. The first expectation will match until it has been called x times. After that, the next will match. If you write it as an "allowing" or "atLeast(1).of" statement, then every call afterwards will throw an exception. For example: context.checking( new Expectations() {{ exactly(x).of(m).foo(); will (returnValue(new Thing())); atLeast(1).of(m).foo(); will (throwException(new BlahDeBlahException()); }}); More information is here: http://www.jmock.org/dispatch.html --Nat --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email |
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Re: Jmock2 Object creation
by ravisankarvivek
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Am sorry, I think I dint frame the question properly. Let me make it clear & precise :)
Class X{ Y service; public void setServ(Y serv){ service = serv; } public void f() throws AppException { for( int i = 0; i < 3;i++ ){ // do something service.get(); } } }; In my testFile: I mock the class Y and create a mock object named mock_service; I then say X xx; xx.setServ(mock_service); context.checking( new Expectations() {{ exactly(3).of(mock_service).get(); will(.... ); }}); xx.f(); It says AssertionError: Expected AppException. How do I resolve this ? On Wed, Jul 2, 2008 at 8:19 PM, Nat Pryce <nat.pryce@...> wrote: 2008/7/2 Vivek R <vivmbbs@...>: |
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Re: Jmock2 Object creation
by Nat Pryce
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JMock doesn't expect exceptions. Have you set the expected parameter
of the @Test annotation? --Nat 2008/7/2 Vivek R <vivmbbs@...>: > Am sorry, I think I dint frame the question properly. Let me make it clear & > precise :) > > Class X{ > Y service; > public void setServ(Y serv){ > service = serv; > } > public void f() throws AppException { > > for( int i = 0; i < 3;i++ ){ > // do something > service.get(); > } > > } > }; > > In my testFile: > > I mock the class Y and create a mock object named mock_service; > I then say X xx; xx.setServ(mock_service); > > context.checking( new Expectations() {{ > exactly(3).of(mock_service).get(); will(.... ); > > }}); > > xx.f(); > > It says AssertionError: Expected AppException. How do I resolve this ? > On Wed, Jul 2, 2008 at 8:19 PM, Nat Pryce <nat.pryce@...> wrote: >> >> 2008/7/2 Vivek R <vivmbbs@...>: >> > I have a function which returns a particular value if u call it say 'x' >> > times. Once you call the function (x + 1)th time, it throws an >> > Exception. >> > This function f() is present in a class X; >> > >> > I have created a mock object for class X; >> > >> > context.checking( new Expectations() { >> > exactly(x).of(..........) will (returnValue(new Y())); >> > }); >> > >> > How do I write the expectation for the (x+1)th time ? >> >> Just add another expectation after the first. The first expectation >> will match until it has been called x times. After that, the next >> will match. If you write it as an "allowing" or "atLeast(1).of" >> statement, then every call afterwards will throw an exception. >> >> For example: >> >> context.checking( new Expectations() {{ >> exactly(x).of(m).foo(); will (returnValue(new Thing())); >> atLeast(1).of(m).foo(); will (throwException(new >> BlahDeBlahException()); >> }}); >> >> More information is here: http://www.jmock.org/dispatch.html >> >> --Nat >> >> --------------------------------------------------------------------- >> To unsubscribe from this list, please visit: >> >> http://xircles.codehaus.org/manage_email >> >> > > --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email |
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Re: Jmock2 Object creation
by ravisankarvivek
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Oh..Yeah... Got it! Thanks a lot :)
- Vivek On Wed, Jul 2, 2008 at 10:17 PM, Nat Pryce <nat.pryce@...> wrote: JMock doesn't expect exceptions. Have you set the expected parameter |
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