[hibernate-dev] [OGM] Embedded MongoDB for tests
Hi all, I just came across across "EmbedMongo" [1] which provides a way to run MongoDB embedded within an application. This is e.g. convenient for tests as it doesn't require a separately installed MongoDB instance. I've tried it out with a single test and it worked as expected. Unfortunately MongoDB (the server) can't be retrieved as Maven dependency, EmbedMongo thus retrieves the distribution via HTTP and stores it in ~/.embedmongo/. This only happens once during the first usage. What do you think, would that be helpful to be used for the OGM MongoDB tests (it might well be that this or similar options have been discussed before and I just missed that)? --Gunnar [1] https://github.com/flapdoodle-oss/embedmongo.flapdoodle.de ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
Re: [hibernate-dev] [OGM] Embedded MongoDB for tests
On 27 Jan 2013, at 2:20 PM, Gunnar Morling wrote: > I just came across across "EmbedMongo" [1] which provides a way to run > MongoDB embedded within an application. This is e.g. convenient for tests > as it doesn't require a separately installed MongoDB instance. Interesting. I think that could be a nice solution. > I've tried it out with a single test and it worked as expected. > Unfortunately MongoDB (the server) can't be retrieved as Maven dependency, > EmbedMongo thus retrieves the distribution via HTTP and stores it in > ~/.embedmongo/. This only happens once during the first usage. Sounds reasonable. > What do you think, would that be helpful to be used for the OGM MongoDB > tests (it might well be that this or similar options have been discussed > before and I just missed that)? I like the idea. AFAIK it has not been discussed so far. --Hardy ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
Re: [hibernate-dev] [OGM] Embedded MongoDB for tests
I heard good praises about this project, so it might be good, but I'd be concerned that we're not testing the real thing. This could be great to mock the db for some operations, but could it replace all of them while providing us with the same level of confidence ? What will the gap be in release times to adapt to mock newer features? Considering that installing a MongoDB installation takes seconds, I don't see a big win in using it, while there is a potential list of trouble. Considering H2 has some options to have it mimick Oracle and MySQL, would you use it to test the ORM dialect for these databases? I don't think I'd trust that. This project might be great for simpler cases but I think that replacing the "real thing" in our case will provide for lower quality releases; maybe we could have the best of two worlds by using profiles and providing this as a fallback when MongoDB is not installed, in which case on CI I would want to verify tests on both. Sanne On 27 June 2013 15:24, Hardy Ferentschik wrote: > > On 27 Jan 2013, at 2:20 PM, Gunnar Morling wrote: > >> I just came across across "EmbedMongo" [1] which provides a way to run >> MongoDB embedded within an application. This is e.g. convenient for tests >> as it doesn't require a separately installed MongoDB instance. > > Interesting. I think that could be a nice solution. > >> I've tried it out with a single test and it worked as expected. >> Unfortunately MongoDB (the server) can't be retrieved as Maven dependency, >> EmbedMongo thus retrieves the distribution via HTTP and stores it in >> ~/.embedmongo/. This only happens once during the first usage. > > Sounds reasonable. > >> What do you think, would that be helpful to be used for the OGM MongoDB >> tests (it might well be that this or similar options have been discussed >> before and I just missed that)? > > I like the idea. AFAIK it has not been discussed so far. > > --Hardy > ___ > hibernate-dev mailing list > hibernate-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
Re: [hibernate-dev] [OGM] Embedded MongoDB for tests
On 27 Jan 2013, at 3:23 PM, Sanne Grinovero wrote: > I heard good praises about this project, so it might be good, but I'd > be concerned that we're not testing the real thing. I thought it is running the real thing. It is not mocking mongo, it is just a wrapper to download/install/start/stop a mongo instance. > Considering that installing a MongoDB installation takes seconds, I > don't see a big win in using it, while there is a potential list of > trouble. It is about automation. I guess you might be able to script the mongo install as well w/o EmbedMongo. Really it is not much different to automatically downloading your AS instance for unit testing. --Hardy ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
[hibernate-dev] IRC Developer Meeting - 6/27
Today was mostly discussion about the Maven and Gradle plugin development [11:04] Meeting ended Thu Jun 27 16:00:00 2013 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) [11:04] Minutes: http://transcripts.jboss.org/meeting/irc.freenode.org/hibernate-dev/2013/hibernate-dev.2013-06-27-15.08.html [11:04] Minutes (text): http://transcripts.jboss.org/meeting/irc.freenode.org/hibernate-dev/2013/hibernate-dev.2013-06-27-15.08.txt [11:04] Log: http://transcripts.jboss.org/meeting/irc.freenode.org/hibernate-dev/2013/hibernate-dev.2013-06-27-15.08.log.html ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
Re: [hibernate-dev] [OGM] Embedded MongoDB for tests
2013/6/27 Sanne Grinovero > I heard good praises about this project, so it might be good, but I'd > be concerned that we're not testing the real thing. > > This could be great to mock the db for some operations, but could it > replace all of them while providing us with the same level of > confidence ? > > What will the gap be in release times to adapt to mock newer features? > AFAICS there is no mocking involved, this is the actual MongoDB. It get's the distribution from mongodb.org, unpacks and starts it. I think the term "embedded" is a bit misleading, because really it starts a separate process for mongod. The client then opens a TCP connection to the DB just as if it was installed, so I don't think there is really any difference. Considering that installing a MongoDB installation takes seconds, I > don't see a big win in using it, while there is a potential list of > trouble. > I think the win is increased ease of use, in particular for new developers. E.g. I first wasn't aware that the mongo module isn't built by default when doing "mvn install" on the root level unlike ehcache etc. (I know, I should have read the readme ;)). It also makes it very easy to test against different Mongo versions if required, also updating to a new version is just a matter of changing the test configuration. > Considering H2 has some options to have it mimick Oracle and MySQL, > would you use it to test the ORM dialect for these databases? I don't > think I'd trust that. > I think a more suitable comparison would be if there was an embedded version of Oracle or MySQL, which I personally definitely would consider for tests (when I installed Oracle last time on Ubuntu it really was a pain, maybe it's easier nowadays). > This project might be great for simpler cases but I think that > replacing the "real thing" in our case will provide for lower quality > releases; maybe we could have the best of two worlds by using profiles > and providing this as a fallback when MongoDB is not installed, in > which case on CI I would want to verify tests on both. > This might be an interesting option, too. That said, I noticed one downside. EmbedMongo stores the distribution file locally after it has downloaded it once, but it unpacks this archive each time when starting the DB. That's not so bad when doing it once for the entire test suite, but it is more significant when doing it for single tests e.g. run from within the IDE. Sanne > --Gunnar > > > On 27 June 2013 15:24, Hardy Ferentschik wrote: > > > > On 27 Jan 2013, at 2:20 PM, Gunnar Morling wrote: > > > >> I just came across across "EmbedMongo" [1] which provides a way to run > >> MongoDB embedded within an application. This is e.g. convenient for > tests > >> as it doesn't require a separately installed MongoDB instance. > > > > Interesting. I think that could be a nice solution. > > > >> I've tried it out with a single test and it worked as expected. > >> Unfortunately MongoDB (the server) can't be retrieved as Maven > dependency, > >> EmbedMongo thus retrieves the distribution via HTTP and stores it in > >> ~/.embedmongo/. This only happens once during the first usage. > > > > Sounds reasonable. > > > >> What do you think, would that be helpful to be used for the OGM MongoDB > >> tests (it might well be that this or similar options have been discussed > >> before and I just missed that)? > > > > I like the idea. AFAIK it has not been discussed so far. > > > > --Hardy > > ___ > > hibernate-dev mailing list > > hibernate-dev@lists.jboss.org > > https://lists.jboss.org/mailman/listinfo/hibernate-dev > ___ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
