Java Error: 'Throw new Exception not Supported' - java

I looked around and am a little confused if it is working or not. The result while debugging gives me the impression that it fails.
Statement 'throw new SessionTimeoutException("Session Timeout"); ' not supported
I am running a test case in Junit and have made many using exceptions previously already however they are implemented in the same manner as the method below at.
private void checkSessionTimeout(HtmlPage page) throws SessionTimeoutException {
I am new to Exceptions and do not understand why it only errors at runtime during the test.
My test runs and fails in the method inside the if statement
private void checkSessionTimeout(HtmlPage page) throws SessionTimeoutException {
HtmlDivision imgDivElement = page.getFirstByXPath("//div[#class='border']");
HtmlDivision errorDivElement = page.getFirstByXPath("//div[#class='error']");
String imgUrl = imgDivElement.getFirstElementChild().getAttribute("src");
String errorMessage = errorDivElement.getTextContent().trim();
if(page.getWebResponse().getContentAsString().contains(imgUrl) && page.getWebResponse().getContentAsString().contains(errorMessage)){
throw new SessionTimeoutException("Session Timeout");
}
}
At this line: throw new SessionTimeoutException("Session Timeout");
package com.cantShow;
import com.cantShow.htmlunit.html.HtmlPage;
import com.cantShow.TimeoutInformation;
import com.cantShow.AbstractScraperTest;
import com.cantShow.scrape.Scraper;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.cantShow.SessionTimeoutException;
public class ScraperTest extends ScraperTest<HtmlPage, SessionTimoutClassWithGettersSetters> {
#Override
protected Scraper<HtmlPage, SessionTimoutClassWithGettersSetters> getScraper() {
return new Scraper();
}
#Test
public void scrape() throws Exception {
SessionTimoutClassWithGettersSettersresult = testScraper("/scrape/timeout-session.html",
"https://cantShow.html");
details(result, "imgs/error.png","Your session has timed out. You will need to log back in to continue shopping.");
}
private static void details(SessionTimoutClassWithGettersS setterstimeoutInformation, String errorImgUrl, String errorMsg){
assertEquals(errorImgUrl, sessionTimoutClassWithGettersSetters.getErrorImageUrl());
assertEquals(errorMsg, sessionTimoutClassWithGettersSetters.getErrorMessage());
}
}
Stack Trace:
com.cantShow.Scraper.checkSessionTimeout(Scraper.java:28)
atcom.cantShow.Scraper.Scraper.scrape(Scraper.java:16)
at com.cantShow.Scraper.Scraper.scrape(Scraper.j va:12)
at com.cantShow.Scraper.ScrapeService.scrapeString(ScrapeService.java:406)
at com.cantShow.Scraper.AbstractScraperTest.testScraper(AbstractScraperTest.java:32)
at com.cantShow.Scraper.ScraperTest.scrape(ScraperTest.java:22)
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:497)
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.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:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
I have looked at other posts on Stack Overflow however could not find one like this for Java.


If you want to test that the Exception is thrown you have to catch it and verify that it is the right Exception.
#Test
public void scrape() throws Exception {
boolean exceptionHappend = false;
try {
SessionTimoutClassWithGettersSettersresult =
testScraper("/scrape/timeoutsession.html", "https://cantShow.html");
} catch (SessionTimeoutException e) {
exceptionHappend = true;
}
assertTrue(exceptionHappend);
details(result, "imgs/error.png","Your session has timed out. You will need to log back in to continue shopping.");
}

Related

java.lang.AssertionError: Content type not set - Spring Test and Mockito

my test return failed with error:
java.lang.AssertionError: Content type not set
I read that this error don't mean so much, because return the same if there is a NPE or don't match the handler ...
But i don't understand where is the error, seem to me all ok ...
My controller is already with #RestController
This is controller Method:
#RestController
#RequestMapping("/local")
public class ControllerTest{
.....
#RequestMapping(value = "/test", method = RequestMethod.GET)
#ResponseBody
public JsonResponse<TestResponseModel> test (
#RequestParam(value = "data1", required = true) String data1,
#RequestParam(value = "data2", required = true) String data2,
{
try {
TestRequestModel input= new TestRequestModel();
input.setData1(data1);
input.setData2(data2);
TestResponseModel entities = business.test(input);
return JsonResponse(entities);
} catch (TestException e) {
log.error("APPLICATION EXCEPTION", e);
throw e;
} catch (Exception e) {
log.error("UNHANDLED EXCEPTION", e);
throw new TestException(e);
}
}
}
and this is the test:
#Mock
private Business business;
#Mock
private TestResponseModel testResponseModel;
#Test
public void getTest() throws Exception {
when(business.test(isA(TestRequestModel.class))).thenReturn(testResponseModel);
mockMvc.perform(get("/local/test")
.requestAttr("data1", "data1_test")
.requestAttr("data2", "data2_test"))
.andDo(print())
.andExpect(status().isOk())
.andExpect(content().contentType("application/json"));
}
StackTrace:
at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:35)
at org.springframework.test.util.AssertionErrors.assertTrue(AssertionErrors.java:65)
at org.springframework.test.web.servlet.result.ContentResultMatchers$1.match(ContentResultMatchers.java:82)
at org.springframework.test.web.servlet.MockMvc.applyDefaultResultActions(MockMvc.java:191)
at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:163)
at com.test.controller.TestClassTest.GetTest(TestClassTest.java:79)
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.DefaultInternalRunner$1.run(DefaultInternalRunner.java:68)
at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:74)
at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:39)
at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:161)

I fixed changing in Test Unit .requestAttr() to .param()

Setting the property "java.io.tmpdir" causes test failure

I created a class to generate temporary files. After that I started to test the class and wrote 2 tests, see below. I excluded my generator class to be sure that none of my code causes interference.
public class TemporaryFileGeneratorTest {
private static final String SYSTEM_TEMP_DIR_PROP = "java.io.tmpdir";
private static final String DEFAULT_TEMP_DIR = System.getProperty(SYSTEM_TEMP_DIR_PROP);
#Before
public void setDefaultTempDir() {
System.setProperty(SYSTEM_TEMP_DIR_PROP, DEFAULT_TEMP_DIR);
}
#Test
public void testCreateTemporaryFile() throws IOException {
File file = File.createTempFile("temp-file", ".txt");
file.deleteOnExit();
}
#Test(expected = IOException.class)
public void testCreateTemporaryFileShouldThrowException() throws IOException {
System.setProperty(SYSTEM_TEMP_DIR_PROP, "not-existing");
File file = File.createTempFile("cannot-create-file", ".txt");
}
}
If I run the tests one-by-one, both of the tests will run successfully. But in the case of running the whole test file (by eclipse) the 'testCreateTemporaryFileShouldThrowException' will run in the first place - successfully, and 'testCreateTemporaryFile' will run secondly - with a failure.
The failure is caused by an IOException:
java.io.IOException: The system cannot find the path specified
at java.io.WinNTFileSystem.createFileExclusively(Native Method)
at java.io.File.createTempFile(File.java:2024)
at java.io.File.createTempFile(File.java:2070)
at mypackage.TemporaryFileGeneratorTest.testCreateTemporaryFile(TemporaryFileGeneratorTest.java:14)
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.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Anyone got an idea what is wrong? I set the system property "java.io.tmpdir" always before a test runs and this is the only change that the second test makes that needs to be reset.

Doing this way will work:
#Test
public void testCreateTemporaryFile() throws IOException {
File file = File.createTempFile("temp-file", ".txt", new File(System.getProperty(SYSTEM_TEMP_DIR_PROP)));
file.deleteOnExit();
}
#Test(expected = IOException.class)
public void testCreateTemporaryFileShouldThrowException() throws IOException {
System.setProperty(SYSTEM_TEMP_DIR_PROP, "not-existing");
File file = File.createTempFile("cannot-create-file", ".txt", new File(System.getProperty(SYSTEM_TEMP_DIR_PROP)));
}
It seems that you need to define the directory where Java will create your temp file. So, you need to set the third parameter of the method createTempFile which is the directory.
Not setting this parameter, Java gets lost, not finding the correct path. It might happen because you are changing an important system property.

Spring Data JPA findById() throwing ClassCastException

I have a method that is using findById() method of Spring Data JPA. However, this method is returning ClassCastException on line number 1 of the getSupportedKey() method where I am calling findById():
MySupportedKey cannot be cast to java.util.Optional
private MySupportedKey getSupportedKey(String tenant, String key) {
Optional<MySupportedKey> mySupportedKeyOptional = mySupportedKeyRepository.findById(new MySupportedKeyId(tenant, key));
MySupportedKey mySupportedKey= null;
if(mySupportedKeyOptional !=null) {
mySupportedKey= mySupportedKeyOptional.orElse(null);
}
return mySupportedKey;
}
I have been beating my head for a long time but I am not getting anything. Please help me in getting this resolved. I am using spring-data-jpa: 2.0.8.RELEASE.
Adding the Repository Source Code:
public interface MySupportedKeyRepository extends JpaRepository<MySupportedKey, MySupportedKeyId> {
List<MySupportedKey> findByIdTenant(#NotNull String tenant);
}
Adding the complete stack trace of error:
java.lang.ClassCastException: com.test.service.user.entity.MySupportedKey cannot be cast to java.util.Optional
at com.test.service.user.repository.MySupportedKeyRepository$MockitoMock$1304362870.findById(Unknown Source)
at com.test.service.user.repository.MySupportedKeyRepository$MockitoMock$1304362870.findById(Unknown Source)
at com.test.service.user.userpreferences.PreferencesServiceImpl.getSupportedKey(PreferencesServiceImpl.java:217)
at com.test.service.user.userpreferences.PreferencesServiceImpl.updateUserPreferences(PreferencesServiceImpl.java:167)
at com.test.service.user.userpreferences.PreferencesServiceImpl.lambda$2(PreferencesServiceImpl.java:92)
at java.util.ArrayList.forEach(Unknown Source)
at com.test.service.user.userpreferences.PreferencesServiceImpl.updateUserPreferences(PreferencesServiceImpl.java:92)
at com.test.service.user.preferences.PreferencesServiceImplTest.updateUserPreferences(PreferencesServiceImplTest.java:300)
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.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.mockito.internal.junit.JUnitRule$1.evaluateSafely(JUnitRule.java:52)
at org.mockito.internal.junit.JUnitRule$1.evaluate(JUnitRule.java:43)
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.RunPrepareTestInstanceCallbacks.evaluate(RunPrepareTestInstanceCallbacks.java:64)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.springframework.test.context.junit4.statements.SpringFailOnTimeout.evaluate(SpringFailOnTimeout.java:87)
at org.springframework.test.context.junit4.statements.ProfileValueChecker.evaluate(ProfileValueChecker.java:103)
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$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.springframework.test.context.junit4.statements.ProfileValueChecker.evaluate(ProfileValueChecker.java:103)
at org.springframework.test.context.junit4.rules.SpringClassRule$TestContextManagerCacheEvictor.evaluate(SpringClassRule.java:230)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
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: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)

You set up a Mockito mock for the repository and probably told it to return a MySupportedKey instance when findById gets called.
But since findById is supposed to return an Optional you now get the exception.
You can see that this is coming from Mockito in the very first two lines of the stack trace.
java.lang.ClassCastException: com.test.service.user.entity.MySupportedKey cannot be cast to java.util.Optional
at com.test.service.user.repository.MySupportedKeyRepository$MockitoMock$1304362870.findById(Unknown Source)

Modify the Optional handling in your below method to get the correct representation like below:
private MySupportedKey getSupportedKey(String tenant, String key) {
Optional<MySupportedKey> mySupportedKeyOptional = mySupportedKeyRepository.findById(new MySupportedKeyId(tenant, key));
MySupportedKey mySupportedKey= null;
if(mySupportedKeyOptional.isPresent()) {
mySupportedKey= mySupportedKeyOptional.get();
}
return mySupportedKey;
}

Cannot add comment, just wanted to elaborate on Jens answer since it took me a while to figure out how to fix this (being a newbie).
To fix the issue I changed my code from:
when(mongoRepository.findById(Mockito.anyString())).thenAnswer(new Answer<MongoObj>() {
#Override
public MongoObj answer(InvocationOnMock invocation) throws Throwable {
MongoObj repush = new MongoObj();
//Some other code
return repush;
}
});
To
when(mongoRepository.findById(Mockito.anyString())).thenAnswer(new Answer<Optional<MongoObj>>() {
#Override
public Optional<MongoObj> answer(InvocationOnMock invocation) throws Throwable {
MongoObj repush = new MongoObj();
//Some other code
return Optional.of(repush);
}
});
Hope this helps!

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.

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);

Categories