As has been discussed in this link - https://groups.google.com/group/powermock/browse_thread/thread/25ba2b85d9e576f4, I tried to use PowerMock with Robolectric to mock a static method. But it's throwing some hard-to-understand exceptions.
Below is my test class:
package net.therap.passreset.service;
import android.content.Context;
import com.xtremelabs.robolectric.Robolectric;
import net.therap.passreset.util.ConnectivityStatus;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.rule.PowerMockRule;
import roboguice.RoboGuice;
import roboguice.activity.RoboActivity;
import roboguice.test.RobolectricRoboTestRunner;
import static org.easymock.EasyMock.expect;
import static org.powermock.api.easymock.PowerMock.mockStatic;
/**
* #author sharafat
*/
#RunWith(RobolectricRoboTestRunner.class)
#PrepareForTest(ConnectivityStatus.class)
public class TherapWebServiceClientTest {
#Rule
public PowerMockRule rule = new PowerMockRule();
private Context context = new RoboActivity();
private TherapWebServiceClient therapWebServiceClient;
#Before
public void setUp() throws Exception {
RoboGuice.setBaseApplicationInjector(Robolectric.application, RoboGuice.DEFAULT_STAGE);
therapWebServiceClient = RoboGuice.getInjector(context).getInstance(TherapWebServiceClient.class);
mockStatic(ConnectivityStatus.class);
}
#After
public void tearDown() throws Exception {
RoboGuice.util.reset();
}
#Test
public void testLogin_success() {
Robolectric.setDefaultHttpResponse(200, "");
expect(ConnectivityStatus.isInternetConnected(context)).andReturn(true);
therapWebServiceClient.login("", "", "");
}
}
Running the test yields the following exception:
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field roboguice.activity.RoboActivity.__shadow__
---- Debugging information ----
field : __shadow__
class : roboguice.activity.RoboActivity
required-type : roboguice.activity.RoboActivity
converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/fNext/fNext/fTarget/context/__shadow__
line number : 16
class[1] : net.therap.passreset.service.TherapWebServiceClientTest
class[2] : org.junit.internal.runners.statements.InvokeMethod
class[3] : org.junit.internal.runners.statements.RunBefores
class[4] : org.junit.internal.runners.statements.RunAfters
class[5] : org.powermock.modules.junit4.rule.PowerMockStatement
class[6] : org.powermock.modules.junit4.rule.PowerMockStatement$1
version : null
-------------------------------
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:453)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:294)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1052)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1036)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:912)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:903)
at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:54)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:89)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:78)
at org.powermock.modules.junit4.rule.PowerMockStatement.evaluate(PowerMockRule.java:49)
at com.xtremelabs.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:292)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:76)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Process finished with exit code 255
If I remove the context field from the class and replace it with new RoboActivity() elsewhere in the code, then the following exception is thrown:
java.lang.NullPointerException
at roboguice.RoboGuice.setBaseApplicationInjector(RoboGuice.java:116)
at net.therap.passreset.service.TherapWebServiceClientTest.setUp(TherapWebServiceClientTest.java:33)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.powermock.modules.junit4.rule.PowerMockStatement$1.run(PowerMockRule.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.powermock.reflect.internal.WhiteboxImpl.performMethodInvocation(WhiteboxImpl.java:2014)
at org.powermock.reflect.internal.WhiteboxImpl.doInvokeMethod(WhiteboxImpl.java:885)
at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:713)
at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:401)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:98)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:78)
at org.powermock.modules.junit4.rule.PowerMockStatement.evaluate(PowerMockRule.java:49)
at com.xtremelabs.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:292)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:76)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Process finished with exit code 255
The above exception seems to indicate that Robolectric is unable to create an application context. Any idea on how I can make both work together?
I found a way to use PowerMock in conjunction with Robolectric.
In addition to the standard PowerMock jars, the PowerMock Junit Rule is also needed. It is described here how to grab it. I used the xstream classloading version, because the objenesis one is very buggy. This is working with PowerMock 1.5.5 and Robolectric 2.3, i cannot speak about the older versions. Also please note that the Java agent should not be included, because from my experience it causes problems.
So if you are using maven, these dependencies should be declared:
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4-rule</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-classloading-xstream</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
Then you have to setup your test class like this:
#RunWith(RobolectricTestRunner.class)
#PowerMockIgnore({ "org.mockito.*", "org.robolectric.*", "android.*" })
#PrepareForTest(Static.class)
public class MyTest {
#Rule
public PowerMockRule rule = new PowerMockRule();
private MyActivity activity;
#Before
public void setup() {
activity = Robolectric.buildActivity(MyActivity.class).create().get();
}
#Test
public void test() throws Exception {
PowerMockito.mockStatic(Static.class);
Mockito.when(Static.getCurrentTime()).thenReturn(1);
Assert.assertEquals(1, activity.getId());
}
}
Update your PowerMock to above version 1.4.9. I think i'm using 1.5.1 and i'm not seeing the same error. i have:
#RunWith(RobolectricTestRunner.class)
#PrepareForTest(MyStaticClass.class)
and they don't conflict.
see: https://github.com/jayway/powermock/wiki/PowerMockAgent
Related
I am getting "java.lang.RuntimeException: Stub!" when running the roboelectric tests.I have proper eclipse ordering and also set the runner properly.
Here's the stack trace.
java.lang.RuntimeException: java.lang.RuntimeException: Stub!
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:240)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:177)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.RuntimeException: Stub!
at android.net.Uri.parse(Uri.java:53)
at org.robolectric.shadows.ShadowMediaStore.reset(ShadowMediaStore.java:27)
at org.robolectric.Robolectric.reset(Robolectric.java:1351)
at org.robolectric.internal.ParallelUniverse.resetStaticState(ParallelUniverse.java:47)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:226)
... 16 more
here is my test
package com.example.sample.test;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import com.example.sample.MainActivity;
import com.example.sample.R;
#RunWith(RobolectricTestRunner.class)
public class MyActivityTest {
private MainActivity activity;
#Test
public void shouldHaveHappySmiles() throws Exception {
String hello = new MainActivity().getResources().getString(R.string.hello_world);
assertThat(hello, equalTo("Hello world!"));
activity = Robolectric.buildActivity(MainActivity.class)
.create().get();
}
}
I wrote this testcase just to hang around with Roboelectric.
You shouldn't do :
new MainActivity().getResources().getString(R.string.hello_world);
This is probably where the Stub! exception comes from, although it's not clear in the stack trace.
Instead, create your activity with Robolectric, then get the value of the hello string, then assert:
activity = Robolectric.buildActivity(MainActivity.class).create().start().resume().visible().get();
String hello = Robolectric.shadowOf(activity).getResources().getString(R.string.hello_world);
assertThat(hello, equalTo("Hello world!"));
You can also use ShadowApplication#getResources().
I am getting the following exception while trying to run tests with robolectric on eclipse. Stumped what is causing this issue. Anyone faced the same?
My test class has only the following. I am just starting on it.
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
#RunWith(RobolectricTestRunner.class)
public class ABCMainActivityTest {
#Test
public void shouldFail() {
assertTrue(true);
}
}
Getting the following exception when i execute with the argument -noverify
java.lang.IllegalArgumentException: Test class can only have one constructor
at org.junit.runners.model.TestClass.<init>(TestClass.java:37)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:55)
at org.robolectric.RobolectricTestRunner$HelperTestRunner.<init>(RobolectricTestRunner.java:643)
at org.robolectric.RobolectricTestRunner.getHelperTestRunner(RobolectricTestRunner.java:261)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:194)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:175)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
else if i am not passing any arguments i am getting a
java.lang.VerifyError: Expecting a stackmap frame at branch target 46
I recently started to work on the Robolectric unit testing framework for my android apps. I am using Android Studio IDE for this all.
I have made MainActivity.java where there is button R.id.clickButton, I am able to run that app in my phone/emulator and working fine.
I have made MainActivityTest.java where I am trying to see is button not null like below
private MainActivity activity;
#Before
public void setup() {
activity = Robolectric.buildActivity(MainActivity.class).get();
}
#Test
public void shouldFail() {
assertTrue(true);
}
#Test
public void shouldNotBeNull() {
assertThat(activity).isNotNull();
Button button = (Button) activity.findViewById(R.id.clickButton);
assertThat(button).isNotNull();
}
When I execute the test using command line then build failed at Button button = (Button) activity.findViewById(R.id.clickButton); with an error trace. I could not find why it so. Guys look this and hoping you will reply me soon.
StackTrace
java.lang.NullPointerException
at android.content.ContextWrapper.getApplicationInfo(ContextWrapper.java:132)
at android.view.ViewGroup.initViewGroup(ViewGroup.java:447)
at android.view.ViewGroup.__constructor__(ViewGroup.java:417)
at android.view.ViewGroup.<init>(ViewGroup.java:416)
at android.widget.FrameLayout.<init>(FrameLayout.java:93)
at org.robolectric.tester.android.view.RoboWindow$2.<init>(RoboWindow.java:231)
at org.robolectric.tester.android.view.RoboWindow.createDecorView(RoboWindow.java:231)
at org.robolectric.tester.android.view.RoboWindow.access$000(RoboWindow.java:30)
at org.robolectric.tester.android.view.RoboWindow$1.run(RoboWindow.java:222)
at org.robolectric.shadows.ShadowLooper.runPaused(ShadowLooper.java:256)
at org.robolectric.tester.android.view.RoboWindow.getDecorView(RoboWindow.java:220)
at org.robolectric.tester.android.view.RoboWindow.findViewById(RoboWindow.java:292)
at org.robolectric.shadows.ShadowActivity.findViewById(ShadowActivity.java:312)
at android.app.Activity.findViewById(Activity.java)
at com.example.robolectrichelloworld.MainActivityTest.shouldNotBeNull(MainActivityTest.java:41)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:241)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:177)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:86)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:49)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:69)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:50)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:103)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:355)
at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Try to insert the call to create() after Robolectric.buildActivity(...):
#Before
public void setup() {
activity = Robolectric.buildActivity(MainActivity.class).create().get();
}
I solved the problem by simply extend the class by Activity. My activity was extending ActionBarActivity that was creating the issue.
I am new to android development. Learning best testing practices. I downloaded Robolectric 2.2. I wrote a simple test for the Spinner example that ships with android. I get an exception. I followed the steps on robolectric to set it up in eclipse. Thanks for your help.
Test code:
package com.example;
import com.android.example.spinner.R;
import com.android.example.spinner.SpinnerActivity;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Spinner;
import junit.framework.Assert;
#RunWith(RobolectricTestRunner.class)
public class SpinnerActivityTest {
private static final String tag = "SpinnerActivityTest";
#Test
public void spinnerShouldHaveOnClickListener() throws Exception {
SpinnerActivity spinnerActivity = new SpinnerActivity();
Spinner spinner = (Spinner)spinnerActivity.findViewById(R.id.Spinner01);
OnItemClickListener onItemClickListener = spinner.getOnItemClickListener();
Assert.assertTrue(onItemClickListener != null);
}
}
Exception:
java.lang.IncompatibleClassChangeError: class org.objectweb.asm.tree.ClassNode has interface org.objectweb.asm.ClassVisitor as super class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.robolectric.RobolectricTestRunner.createRobolectricClassLoader(RobolectricTestRunner.java:144)
at org.robolectric.RobolectricTestRunner.createSdkEnvironment(RobolectricTestRunner.java:116)
at org.robolectric.RobolectricTestRunner$3.create(RobolectricTestRunner.java:279)
at org.robolectric.EnvHolder.getSdkEnvironment(EnvHolder.java:21)
at org.robolectric.RobolectricTestRunner.getEnvironment(RobolectricTestRunner.java:277)
at org.robolectric.RobolectricTestRunner.access$100(RobolectricTestRunner.java:57)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:188)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:175)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Since Robolectric 2 you have to start your activity with Robolectric.buildActivity():
Activity activity = Robolectric.buildActivity( SpinnerActivity.class ).attach().create().start().resume().visible().get();
For more info see here: http://robolectric.org/activity-lifecycle.html
When trying to run a JUnit test on an Android Library project with Robolectric i get the following error:
java.lang.RuntimeException: java.lang.InstantiationException
at com.xtremelabs.robolectric.ApplicationResolver.newApplicationInstance(ApplicationResolver.java:56)
at com.xtremelabs.robolectric.ApplicationResolver.resolveApplication(ApplicationResolver.java:36)
at com.xtremelabs.robolectric.RobolectricTestRunner.createApplication(RobolectricTestRunner.java:246)
at com.xtremelabs.robolectric.RobolectricTestRunner.setupApplicationState(RobolectricTestRunner.java:233)
at com.xtremelabs.robolectric.RobolectricTestRunner.internalBeforeTest(RobolectricTestRunner.java:177)
at com.xtremelabs.robolectric.RobolectricTestRunner.methodBlock(RobolectricTestRunner.java:157)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.InstantiationException
at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at com.xtremelabs.robolectric.ApplicationResolver.newApplicationInstance(ApplicationResolver.java:54)
... 20 more
My first idea was that i made a mistake within the test, so i simplified the test run as much as possible:
import static org.junit.Assert.*;
import org.junit.Test;
import org.junit.runner.RunWith;
import com.xtremelabs.robolectric.RobolectricTestRunner;
#RunWith(RobolectricTestRunner.class)
public class CommonDataTest {
#Test
public void test(){
assertTrue(true);
}
}
but i still get the same error. I set up the Project as described here: http://robolectric.org/eclipse-quick-start/
The strange thing is that it worked with other Android Library Projects without any problems.
Any help would be appreciated! Thank you in advance!
it seemed that Robolectric was unable to create the Application from my library so i replaced the TestRunner:
import org.junit.runners.model.InitializationError;
import android.app.Application;
import com.xtremelabs.robolectric.RobolectricTestRunner;
public class MyTestRunner extends RobolectricTestRunner {
public MyTestRunner(Class<?> testClass)
throws InitializationError {
super(testClass);
}
#Override protected Application createApplication() {
return new Application() {
};
}
}
and used it instead of the RobolectricTestRunner:
#RunWith(MyTestRunner.class)
The tests are running properly now.