Android Espresso Test: java.lang.TypeNotPresentException: Type org/powermock/modules/junit4/PowerMockRunner not present

I'm trying to use Powermock to mock static methods on Android Espresso Tests Cases, but I'm receiving this error.

My tests are running fine with AndroidJUnit4.class Runner and I am able compile them with the PowerMockRunner, this error happens in runtime only. My app is a multidex one.

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(AndroidJUnit4.class)
@PrepareForTest(RestClientFactory.class)
public class IgorLoginGoogleDemaisTest extends ActivityInstrumentationTestCase2<MainCacs>
{
...
    @Test
    public void test1_ErroDeConexaoAoLogar() throws NoSuchFieldException, IllegalAccessException
    {
        ....
        PowerMockito.mockStatic(RestClientFactory.class);
        PowerMockito.when(RestClientFactory.makeClient(UsuarioServicesClient.class, Mockito.any(Context.class))).thenThrow(new IOException("Erro de rede"));
        ....
    }
}

This is the error I'm receiving (it's basically a kind of ClassNotFoundError for dynamic class loading):

java.lang.TypeNotPresentException: Type org/powermock/modules/junit4/PowerMockRunner not present
at java.lang.Class.getDeclaredAnnotation(Native Method)
at java.lang.Class.getAnnotation(Class.java:290)
at android.support.test.internal.runner.junit4.AndroidAnnotatedBuilder.runnerForClass(AndroidAnnotatedBuilder.java:42)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runner.Computer.getRunner(Computer.java:40)
at org.junit.runner.Computer$1.runnerForClass(Computer.java:31)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:101)
at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:87)
at org.junit.runners.Suite.<init>(Suite.java:81)
at org.junit.runner.Computer.getSuite(Computer.java:28)
at android.support.test.internal.runner.TestRequestBuilder.classes(TestRequestBuilder.java:791)
at android.support.test.internal.runner.TestRequestBuilder.build(TestRequestBuilder.java:754)
at android.support.test.runner.AndroidJUnitRunner.buildRequest(AndroidJUnitRunner.java:341)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:238)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)

Below are my dependencies for AndroidTest scope, into build.gradle

    androidTestCompile 'org.powermock:powermock-api-mockito:1.6.2'
    androidTestCompile 'org.powermock:powermock-module-junit4-rule-agent:1.6.2'
    androidTestCompile 'org.powermock:powermock-module-junit4-rule:1.6.2'
    androidTestCompile 'org.powermock:powermock-module-junit4:1.6.2'

    androidTestCompile 'junit:junit:4.12'
    androidTestCompile 'com.android.support.test:runner:0.4'
    // Set this dependency to use JUnit 4 rules
    androidTestCompile 'com.android.support.test:rules:0.4'
    // Set this dependency to build and run Espresso tests
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1'

    androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'

    androidTestCompile('com.android.support:multidex-instrumentation:1.0.1') {
        exclude group: 'com.android.support', module: 'multidex'
    }

I tried to put the class name into my multidex.keep file, but it didin't work

How cound I fix it?