kotlin-testrunner

Classes and methods are final by default in kotlin. This makes mocking impossible. This leaves you with the possibilies of

either open everything you need in code just for your tests
introduce interfaces for every kotlin class you want to mock
use Powermock and prepare all your kotlin classes for the test with annoations.

This library removes final modifiers of classes and methods during the test in runtime.

Remarks

Since Mockito 2.0 this can be achieved by mockito itself, and you don't need this runner
This can not be combined with Robolectric for now but feel free to build a RobolectricTestrunner version based on this

Gradle

...
dependencies {
...
	testCompile 'de.jodamob.kotlin:kotlin-runner-junit4:0.3.1'
}

Usage

for Java:

@RunWith(KotlinTestRunner.class)
public class MyJavaTestclass {
   @Test 
   public void test() {
   ...
   }
}

for Kotlin:

@RunWith(KotlinTestRunner::class)
class MyKotlinTestclass {
   @Test 
   fun test() {
   ...
   }
}

By default this will change all the classes in the same package as your test. We cant do this for all the classes as we don't know your environment and dependencies. But you can configure this via annotations similar to Powermock:

@OpenedClasses("FinalClassSample::class")

@OpenedClasses("FinalClassSample::class", "FinalClass2Sample::class")

or simply tell us the package, and we will mock all those (incl subpackages)

@OpenedPackages("com.mypackage")

Full example:

@RunWith(KotlinTestRunner::class)
@OpenedPackages("com.mypackage")
class MyKotlinTestclass {
   @Test 
   fun test() {
   ...
   }
}

Spock

Thanks to Paweł Urban we also support Spock.

Simply use the SpotlinTestRunner:

@RunWith(SpotlinTestRunner::class)
class MyKotlinTestclass {
   @Test 
   fun test() {
   ...
   }
}

and import the spock runner instead the junit4 one:

	compile 'de.jodamob.kotlin:kotlin-runner-spock:0.3.1'

License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

dpreussler/kotlin-testrunner