DataBrokerTestModule: use AbstractDataBrokerTest without inheritance 45/43645/3
authorMichael Vorburger <vorburger@redhat.com>
Wed, 10 Aug 2016 15:22:30 +0000 (17:22 +0200)
committerMichael Vorburger <vorburger@redhat.com>
Tue, 16 Aug 2016 20:14:24 +0000 (20:14 +0000)
commite0819c56a40458d9eac0ebbbe1d2049f795cfe95
treebf177fa7e4c1e39f4522046c67013f20e454c751
parent7afabf1610a04034a1c4e3da2e0af28f6644c518
DataBrokerTestModule: use AbstractDataBrokerTest without inheritance

While starting to write JUnit tests (for functional components) with the
AbstractDataBrokerTest, I found myself not liking its design which
forces one to use a class SomeTest extends AbstractDataBrokerTest...

Modern JUnit tests should be written by composition, not enforced
inheritance.  Thus this new DataBrokerTestModule allows one to obtain a
DataBroker suitable for Tests from anywhere.

The *(Test)Module naming convention is obviously inspired by a DI point
of view (think Spring Framework's @Configuration classes, or Google
Guice or Dagger (yay!) *Module classes - which is exactly what this
really is - a particular way to obtain an instance of an
implementationof some service (here a DataBroker) in a certain
environment (here for tests).

The internal implementation of DataBrokerTestModule could be changed
later; I guess ideally what's in AbstractDataBrokerTest could go into
DataBrokerTestModule and AbstractDataBrokerTest could use it, but for
now I'm too lazy to change that, as this does the trick nicely.  Later
implementation changes would be transparent to users of
DataBrokerTestModule.

Change-Id: I9641f527bbc0cb92732f2e513cdd64cc6a837200
Signed-off-by: Michael Vorburger <vorburger@redhat.com>
opendaylight/md-sal/sal-binding-broker/pom.xml
opendaylight/md-sal/sal-binding-broker/src/test/java/org/opendaylight/controller/md/sal/binding/test/DataBrokerTestModule.java [new file with mode: 0644]
opendaylight/md-sal/sal-binding-broker/src/test/java/org/opendaylight/controller/md/sal/binding/test/tests/AbstractDataBrokerTestTest.java [new file with mode: 0644]
opendaylight/md-sal/sal-binding-broker/src/test/java/org/opendaylight/controller/md/sal/binding/test/tests/DataBrokerTestModuleTest.java [new file with mode: 0644]

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