Robolectric ShadowAssetManager nullpointer exception - java

this is the error i get:
java.lang.NullPointerException
at org.robolectric.shadows.ShadowAssetManager.open(ShadowAssetManager.java:161)
at android.content.res.AssetManager.open(AssetManager.java)
at dagrada.marco.shariki.MatrixFileReader.getMatrix(MatrixFileReader.java:69)
at dagrada.marco.shariki.GameStatusHandler.loadLevel(GameStatusHandler.java:51)
at dagrada.marco.shariki.GameStatusHandler.loadGame(GameStatusHandler.java:38)
at test.GameStatusHandlerTest.testLoadGame(GameStatusHandlerTest.java:55)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:236)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:158)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
And this is the code producing it:
#RunWith(RobolectricTestRunner.class)
public class GameStatusHandlerTest {
#Mock
GraphicsRenderer renderer;
private GameStatusHandler handler;
private ArrayList<String> list = new ArrayList<>();
Context context;
#Before
public void setUp(){
context = Robolectric.application.getApplicationContext();
handler = new GameStatusHandler(context, renderer);
list.add(0, "level0.txt");
}
#Test
public void testLoadGame(){
try {
handler.loadGame(list);
} catch (Exception e) {
e.printStackTrace();
}
assertTrue(handler.getCurrentLevel() == 0);
}
Through the stactrace it's clear that the code which causes this error is a call to this method, which is a static method in the MatrixFileReader class.
public static int[][] getMatrix(Context context, String name) throws Exception {
int[][] marbles = getMatrix(context.getAssets().open(name));
return marbles;
}
}
Since the stacktrace doesn't go deeper, i guess that the problem is in the context.getAssets.open() method, but i can't figure out the reason, since the pure code is running perfectly onto both the emulator and a real device.
I am probably missing something in the test, which i am trying to run as a junit test.


As mentioned above, use RobolectricGradleTestRunner instead of RobolectricTestRunner.
Then make sure that the file you are reading is present in the assets folder of the source code: src/main/assets.
If you don't want to put it in your test folder, then you will have to specify the test asset folder as one of the asset source in your gradle build like this:
sourceSets.main {
assets.srcDirs = ['src/main/assets', 'src/test/assets']
}
Also your mock GraphicsRenderer won't be initialized with the Mock annotation as you are not using the MockitoJUnitRunner class. You have to initialize it like this in setUp().
renderer = Mockito.mock(GraphicsRenderer.class);


Please specify android manifest via #Config annotation to your test

Related

Exception while running in Junit

I am trying to do unit test for JSONException. Below it's the code:
public void testException(JSONObject jsonObj){
try{
String test = jsonObj.getString("test");
}catch(JSONException e){
}
}
But in the Unit tests when I give the below it throws a different exception:
#Test (expected=JSONException.class){
mymockClass.testException(jsonObj);
}
java.lang.AssertionError: Expected exception: org.codehaus.jettison.json.JSONException
at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:32)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.DefaultInternalRunner$1.run(DefaultInternalRunner.java:79)
at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:85)
at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:39)
at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:163)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)

Its because test expects that exception will be actually thrown out of test method, but you are catching it - thats why you have "expected exception has not been thrown" exception. Remove try-catch block and add throws to method signature.
public void testException(JSONObject jsonObj) throws JSONException{
String test = jsonObj.getString("test");
}

How to test awt.* with SpringBoot?

I have a class which produces screenshot:
#Component
public class ImagesHandlerImpl implements ImagesHandler {
....
public boolean doScreen() throws IOException, AWTException {
final Rectangle rectangle = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
...
}
}
My app created with spring boot, and I need test it. But I get java.awt.HeadlessException
My test:
#RunWith(SpringRunner.class)
#SpringBootTest(classes = ImagesHandlerImpl.class)
#ContextConfiguration(classes = App.class)
public class ImagesHandlerImplTest {
...
#Test
public void whenDoScreenThenFilenameLikeTemplate() throws IOException, AWTException {
imagesHandler.doScreen();
final String name = dir.listFiles()[0].getName();
assertThat("SCREEN_0", is(name));
}
}
I try to prevent HeadlessException:
#SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplicationBuilder builder = new SpringApplicationBuilder(App.class);
builder.headless(false).run(args);
}
}
I use spring-boot version 1.5.6.RELEASE.
But it didn't help. I get log:
java.awt.HeadlessException at
sun.awt.HeadlessToolkit.getScreenSize(HeadlessToolkit.java:284) at
org.robinhood.image.ImagesHandlerImpl.doScreen(ImagesHandlerImpl.java:42)
at
org.robinhood.image.ImagesHandlerImplTest.whenDoScreenThenCreatePrintScreen(ImagesHandlerImplTest.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at
org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at
org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at
org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at
org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at
org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Help me. How to fix this issue?
Thank You!

The spring test runner does not invoke the main method of App class.
And it will turn on Headless mode by default.
You can specify JVM argument -Djava.awt.headless=false for executing the test case.
Another solution is setting the property during bean initialization.
#Component
public class ImagesHandlerImpl implements ImagesHandler, InitializingBean {
#Override
public void afterPropertiesSet() throws Exception {
System.setProperty("java.awt.headless", "false");
}
public boolean doScreen() throws Exception {
//...
}
}

Add
// overcome #SpringBootTest setup
System.setProperty("java.awt.headless", "false")
before the doScreen() method invocation.

Java with mockito fails

I have following method in my service to mock AWS sqs
#Override
public Message recieveMessage(String queueUrl) {
Objects.requireNonNull(queueUrl);
ReceiveMessageRequest request = new ReceiveMessageRequest().withQueueUrl(queueUrl).withMaxNumberOfMessages(1);
ReceiveMessageResult receiveMessageResult = this.sqsClient.receiveMessage(request);
// As per the spec, we need to return only one message.
return receiveMessageResult.getMessages().get(0);
}
#Override
public int getMessageCount(String queueUrl) {
GetQueueAttributesResult queueAttributes = sqsClient.getQueueAttributes(queueUrl, Arrays.asList("ApproximateNumberOfMessages"));
return Integer.valueOf(queueAttributes.getAttributes().get("ApproximateNumberOfMessages"));
}
and following are my test cases for these methods using mockito are failing with NPE.
#Test
public void testRecieveMessage() {
Message message = new Message();
message.setBody("Message Body");
List<Message> messages = new ArrayList<>();
messages.add(message);
ReceiveMessageResult result = new ReceiveMessageResult();
result.setMessages(messages);
when(mock(ReceiveMessageResult.class).getMessages()).thenReturn(messages);
when(mock(List.class).get(0)).thenReturn(message);
when(this.amazonSQSClient.receiveMessage(mock(ReceiveMessageRequest.class))).thenReturn(result);
this.amazonQueueService.recieveMessage(anyString());
verify(this.amazonSQSClient, times(1)).receiveMessage(mock(ReceiveMessageRequest.class));
//Assert.assertNotNull(msg);
}
java.lang.NullPointerException
at com.example.queue.service.impl.AmazonSQSService.recieveMessage(AmazonSQSService.java:46)
at com.example.AmazonSQSServiceTest.testRecieveMessage(AmazonSQSServiceTest.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
#Test
public void testMessageCount() {
GetQueueAttributesResult result = new GetQueueAttributesResult();
result.addAttributesEntry("ApproximateNumberOfMessages", "10");
List<String> attrs = Arrays.asList("ApproximateNumberOfMessages");
when(this.amazonSQSClient.getQueueAttributes(anyString(), eq(attrs))).thenReturn(result);
this.amazonQueueService.getMessageCount(anyString());
}
org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Invalid use of argument matchers!
2 matchers expected, 1 recorded:
-> at com.example.AmazonSQSServiceTest.testMessageCount(AmazonSQSServiceTest.java:96)
This exception may occur if matchers are combined with raw values:
//incorrect:
someMethod(anyObject(), "raw String");
When using matchers, all arguments have to be provided by matchers.
For example:
//correct:
someMethod(anyObject(), eq("String by matcher"));
For more info see javadoc for Matchers class.
at com.example.queue.service.impl.AmazonSQSService.getMessageCount(AmazonSQSService.java:58)
at com.example.AmazonSQSServiceTest.testMessageCount(AmazonSQSServiceTest.java:96)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Am I missing something?

Here is what your code does:
ReceiveMessageRequest request = new ReceiveMessageRequest().withQueueUrl(queueUrl).withMaxNumberOfMessages(1);
ReceiveMessageResult receiveMessageResult = this.sqsClient.receiveMessage(request);
So it creates a new request, and passes ths new request to sqsClient.receiveMessage().
Here's how you test that:
when(this.amazonSQSClient.receiveMessage(mock(ReceiveMessageRequest.class))).thenReturn(result);
So your test tells th mock client to return result when receiveMessage() is called with a mock ReceiveMessageRequest.
So that can't work. The mock ReceiveMessageRequest is not equal to the new request used in the code. You need to do something like
when(this.amazonSQSClient.receiveMessage(any(ReceiveMessageRequest.class))).thenReturn(result);
So that, whetever the request passed to receiveMessage, the mock client returns the result.
Regarding your second question:
this.amazonQueueService.getMessageCount(anyString());
doesn't make sense. You need to call your method with a real, given string.

Unable to find a MessageBodyReader of content-type application/json and type int

I got a main project, that I have to test now...
I made a second project for that, in that project, I pasted the interfaces and entities from the main project, and now I made a simple jUnit test case...
Looks like this:
public class TestLogin {
String path = "http://localhost:8080/rest/dss"; //thats the right path...
ResteasyClient client = new ResteasyClientBuilder().build();
ResteasyWebTarget rtarget = client.target(path);
DssRest rest = rtarget.proxy(DssRest.class);
#Test
public void test() {
assert(rest.login(null, "Test", "Test") != -1);
}
}
DssRest, interface
#POST
#Produces(MediaType.APPLICATION_JSON)
#Path("/login/{userName}/{password}")
int login(#Context HttpServletRequest req, #PathParam("userName") String userName,
#PathParam("password") String password);
from there I go to the DssBean, where the function is that I wanna test
#Override
public int login(HttpServletRequest req, String userName, String password) {
ResteasyClient client = new ResteasyClientBuilder().build();
ResteasyWebTarget rtarget = client.target(".../rest/mw"); //real path
MWRest rest = rtarget.proxy(MWRest.class);
int userId = rest.login(userName, password);
...
return userId; //it always is > -1
}
From there, I call the MWRest, an interface of my second project...and that project has the same function, which returns an INT, 12 for exemple...
now....to test that, made a junit test suite
#RunWith(Suite.class)
#SuiteClasses({TestLogin.class})
public class AllTests {
}
Before I run it, I made sure, the 2 projects I need to test are running...
Then I run the suite, as jUnit test, and on the JUnit console, there is this error, which I simply cannot figure out.
I hope you can help....thx
javax.ws.rs.client.ResponseProcessingException: javax.ws.rs.ProcessingException: Unable to find a MessageBodyReader of content-type application/json and type int
at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:140)
at org.jboss.resteasy.client.jaxrs.internal.proxy.extractors.BodyEntityExtractor.extractEntity(BodyEntityExtractor.java:58)
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker.invoke(ClientInvoker.java:104)
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy.invoke(ClientProxy.java:62)
at com.sun.proxy.$Proxy24.login(Unknown Source)
at test.dss.TestLogin.test(TestLogin.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: javax.ws.rs.ProcessingException: Unable to find a MessageBodyReader of content-type application/json and type int
at org.jboss.resteasy.core.interception.ClientReaderInterceptorContext.throwReaderNotFound(ClientReaderInterceptorContext.java:39)
at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.getReader(AbstractReaderInterceptorContext.java:73)
at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.proceed(AbstractReaderInterceptorContext.java:50)
at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.aroundReadFrom(GZIPDecodingInterceptor.java:59)
at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.proceed(AbstractReaderInterceptorContext.java:53)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readFrom(ClientResponse.java:248)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readEntity(ClientResponse.java:181)
at org.jboss.resteasy.specimpl.BuiltResponse.readEntity(BuiltResponse.java:211)
at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:104)
... 36 more

Mockito not working on update/create in RESTcontroller

I'm trying to write some tests using Mockito and I managed to write them for findAll and delete operations but for the create and update, they won't work.
#RunWith(MockitoJUnitRunner.class)
public class RentedControllerTest {
#Mock
private RentedService rentalService;
#Mock
private MovieService movieService;
#Mock
private ClientService clientService;
#InjectMocks
private RentedController rentalController;
#InjectMocks
private MovieController movieController;
#InjectMocks
private ClientController clientController;
#Before
public void setUp() throws Exception {
initMocks(this);
}
#Test
public void getMovies() throws Exception {
List<Movie> movies = new ArrayList<>();
movies.add(mock(Movie.class));
// System.out.println(movies.toString());
when(movieService.findAll()).thenReturn(movies);
//// System.out.println(movieService.findAll().toString());
MoviesDto response = movieController.getMovies();
assertEquals("should be 1 movie", 1, response.getMovies().size());
}
#Test
public void updateMovie() throws Exception {
Movie movie = new Movie(2,"Lotr",0, "dir2", 2003);
MovieDto movieDto = mock(MovieDto.class);
System.out.println(movie.toString());
when(movieService.updateMovie(anyInt(), anyString(), anyInt(), anyString(), anyInt())).thenReturn(movie);
// Movie m = new Movie();
// m = movieService.updateMovie(2,"Lotrrrrr",0, "dir2", 2003);
// System.out.println(m.toString());
Map<String, MovieDto> map = movieController.updateMovie(2, movieDto);
System.out.println(map.toString());
assertEquals("Title should be Lots", "Lotr", map.get("movie").getName());
}
#Test
public void createMovie() throws Exception {
Movie movie = new Movie(2,"Lotr",0, "dir2", 2003);
MovieDto movieDto = mock(MovieDto.class);
when(movieService.createMovie(anyInt(), anyString(), anyInt(), anyString(), anyInt())).thenReturn(movie);
Map<String, MovieDto> map = movieController.createMovie(movieDto);
assertEquals("Title should be Lotr", "Lotr", map.get("movie").getName());
}
#Test
public void deleteMovie() throws Exception {
ResponseEntity response = movieController.deleteMovie(1);
assertEquals("Http status should be OK", HttpStatus.OK, response.getStatusCode());
}
}
So the line "when(movieService.update....) work's just fine. I tested it with the write lines as you can see in the code and it works. The problem is here
Map<String, MovieDto> map = movieController.updateMovie(2, movieDto);
I gives me NullPointerException inside that method. The method looks like this:
#RequestMapping(value = "/movies/{movieId}", method = RequestMethod.PUT, consumes = CatalogMediaType.API_JSON)
public Map<String, MovieDto> updateMovie(#PathVariable final Integer movieId,
#RequestBody final MovieDto movieDto) {
log.trace("updateMovie: movieId={} movieDto={}", movieId, movieDto);
Movie movie = movieService.updateMovie(movieId, movieDto.getMovie().getName(), movieDto.getMovie().getNumberofrentals(), movieDto.getMovie().getDirector(), movieDto.getMovie().getYear());
Map<String, MovieDto> movieDtoMap = new HashMap<>();
movieDtoMap.put("movie", new MovieDto(movie));
log.trace("updateMovie: movieDtoMap={}", movieDtoMap);
return movieDtoMap;
}
The application itself works perfectly, the problem arises only when runing the mockito tests.
java.lang.NullPointerException
at ro.ubb.stcatalog.web.controller.MovieController.updateMovie(MovieController.java:41)
at ro.ubb.stcatalog.web.controller.RentedControllerTest.updateMovie(RentedControllerTest.java:82)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
2016-05-26T23:51:52,845 TRACE [main]: MovieController - createMovie: moviesDto=Mock for MovieDto, hashCode: 825249556
java.lang.NullPointerException
at ro.ubb.stcatalog.web.controller.MovieController.createMovie(MovieController.java:54)
at ro.ubb.stcatalog.web.controller.RentedControllerTest.createMovie(RentedControllerTest.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
I don't really understand what the problem is if the findAll and delete work just fine... Any ideas?

I believe the mocking of MovieDto class is causing the NPE, as your controller is expecting a few params to be present in the DTO, which are not being set by the mock(), such as movieDto.getMovie().getName().
Create a MovieDto object from scratch with all the required params, or set the params post mocking, and you should be fine.
The following should work.
#Test
public void updateMovie() throws Exception {
Movie movie = new Movie(2,"Lotr",0, "dir2", 2003);
MovieDto movieDto = mock(MovieDto.class);
// Added the following line
movieDto.setMovie(movie);
System.out.println(movie.toString());
when(movieService.updateMovie(anyInt(), anyString(), anyInt(), anyString(), anyInt())).thenReturn(movie);
Map<String, MovieDto> map = movieController.updateMovie(2, movieDto);
System.out.println(map.toString());
assertEquals("Title should be Lots", "Lotr", map.get("movie").getName());
}

Looks like some dependency for the MovieController isn't getting set.
java.lang.NullPointerException
at ro.ubb.stcatalog.web.controller.MovieController.createMovie(MovieController.java:54)

You need to populate movieDto first. When you are doing get in the actual code its like you are doing get on a null which gives a NullPointer. And also Both values should be same. In when condition you are telling movieId as anyInt() and in the actual method call you are giving it as 2. That won't work. Both should be same as below.
when(movieService.updateMovie(**2**, anyString(), anyInt(), anyString(), anyInt())).thenReturn(movie);
Map<String, MovieDto> map = movieController.updateMovie(**2**, movieDto);

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