I need to integrate DbUnit with TestNG.
1) Is it possible to use DbUnit with TestNG as DbUnit is basically an extension of JUnit.
2) If yes how?
Finally i found out a way to use DbUnit with TestNG!
Using Instance of IDatabaseTester works,
but another work around would be :
To extend AbstractDatabaseTester and implement getConnection and override necessary functions.
But one important thing is to call onSetup() and onTeardown() before and after testing.
Hope this helps...
Not sure what you are trying to do exactly, but perhaps Unitils would be helpful. It is like a dbunit extension but not limited to that, and supports integration with TestNg (by extending UnitilsTestNG class for your testcase).
Here is simple class that performs the required function.
public class SampleDBUnitTest {
IDatabaseTester databaseTester;
IDataSet dataSet;
#BeforeMethod
public void setUp() throws Exception {
// These could come as parematers from TestNG
final String driverClass = "org.postgresql.Driver";
final String databaseUrl = "jdbc:postgresql://localhost:5432/database";
final String username = "username";
final String password = "password";
dataSet = new FlatXmlDataSet(Thread.currentThread().getContextClassLoader().getResourceAsStream("dataset.xml"));
databaseTester = new JdbcDatabaseTester(driverClass, databaseUrl, username, password);
databaseTester.setSetUpOperation(DatabaseOperation.CLEAN_INSERT);
databaseTester.setDataSet(dataSet);
databaseTester.setTearDownOperation(DatabaseOperation.NONE);
databaseTester.setDataSet(dataSet);
databaseTester.onSetup();
}
#AfterMethod
public void tearDown() throws Exception {
databaseTester.onTearDown();
}
#Test
public void t() throws Exception {
// Testing, testing
}
}
Related
I am new to Mockito and Powermockito. I have a class to test which interacts with the database in order find and also delete data from the database through different public methods. The application is typical Java EE application and the The class under test belongs to Service package in Businesslogic. The method which I want to test looks like below :
public List<QuestionDtoWrapper> searchInQuestions(final Integer ID, final Integer catID,
final String searchString, final String language) {
final List<QuestionDtoWrapper> result = new ArrayList<>();
//In line below I get null pointer exception although I have stubbed this method
final List<QuestionDtoInt> questions = facade.findQuestionsByCatTemplate(ID, catID,
searchString, language);
for (final QuestionDtoInt question : questions) {
result.add(new QuestionDtoWrapper(question));
}
Collections.sort(result, new QuestionComparator(new Locale("de")));
return result;
}
This is how I tried to test the method in my Junit Test:
#RunWith(MockitoJUnitRunner.class)
#PrepareForTest(QuesService.class)
public class QuesServiceTest {
#Mock
QuesFacade mockFbFacade;
#Mock
List<QuesDtoInt> questions;
#Spy
QuesService myService = new QuesService();
#Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
}
#Test
public void testSearchInQuestions() throws ParseException {
PowerMockito.doReturn(questions).when(mockFbFacade).findQuestionsByCatTemplate(anyInt(), anyInt(), anyString(), anyString());
List<QuestionDtoWrapper> res = null ;
res = myService.searchInQuestions(anyInt(), anyInt(), anyString(), anyString());
assertNotNull(res);
}
I am getting Null pointer exception in Line where the method calls another method. See my comment in source code. Could someone please let me know:
1) Am I using mockito for the correct subject ? Should I use real Test data ? But what about the database connections n all ? I tried that approach and ended up using Mockito only.
2) Why am I getting Null pointer exception although I have stubbed that method with Powermockito ?
3) please provide your valuable suggestions to test the given method correctly.
Note:- I am not allowed to do any refactoring in the code.
I have written this test class to check a service. This is in folder test/java/example/demp/Test.java
#RunWith(MockitoJUnitRunner.class)
#TestPropertySource("classpath:conn.properties")
public class DisplayServiceTest {
#Value("${id}")
private String value;
#Mock
private DisplayRepository DisplayReps;
#InjectMocks
private DisplayService DisplayService;
#Test
public void whenFindAll_thenReturnProductList() {
Menu m = new Menu()
m.setId(value); //when I print value its showing 0
List<Display> expectedDisplay = Arrays.asList(m);
doReturn(expectedDisplay).when(DisplayReps).findAll();
List<Display> actualDisplay = DisplayService.findAll();
assertThat(actualDisplay).isEqualTo(expectedDisplay);
}
My properties file
This is in folder test/resources/conn.properties
id=2
What is the right way to set properties from custom properties file? Cause its not loading values ?
Mockito is a mocking framework, so in general you can't load properties file with Mockito.
Now you've used #TestPropertySource which is a part of Spring Testing and it indeed allows loading properties file (that have nothing to do with mockito though). However using it requires running with SpringRunner and in general its good for integration tests, not for unit tests (Spring Runner among primarily loads Spring's application context).
So if you don't want to use spring here, you should do it "manually". There are many different ways to load Properties file from class path (with getClass().getResourceAsStream() to get the input stream pointing on the resource file and the read it into Properties by using Properties#load(InputStream) for example.
You can also use other thirdparties (not mockito), like apache commons io to read the stream with IOUtils class
If you want to integrate with JUnit 4.x you can even create a rule, described here
#TestPropertySource is a spring annotation, so you need to use the SpringRunner.
You can initialize Mockito using MockitoAnnotations.initMocks(this);, check the example below.
#RunWith(SpringRunner.class)
#TestPropertySource("classpath:conn.properties")
public class DisplayServiceTest {
#Value("${id}")
private String value;
// ...
#Before
public void setup() {
MockitoAnnotations.initMocks(this);
}
// ...
}
You could use just Mockito and JUnit 4. At the #Before method, call MockitoAnnotations.initMocks and load the properties file:
public class DisplayServiceTest {
private String value;
#Mock
private DisplayRepository displayReps;
#InjectMocks
private DisplayService displayService;
#Before
public void setUp() {
MockitoAnnotations.initMocks(this);
Properties prop = loadPropertiesFromFile("conn.properties");
this.value = prop.getProperty("id");
}
private Properties loadPropertiesFromFile(String fileName) {
Properties prop = new Properties();
try {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
InputStream stream = loader.getResourceAsStream(fileName);
prop.load(stream);
stream.close();
} catch (Exception e) {
String msg = String.format("Failed to load file '%s' - %s - %s", fileName, e.getClass().getName(),
e.getMessage());
Assert.fail(msg);
}
return prop;
}
#Test
public void whenFindAll_thenReturnProductList() {
System.out.println("value: " + this.value);
Menu m = new Menu();
m.setId(this.value); // when I print value its showing 0
List<Display> expectedDisplay = Arrays.asList(m);
Mockito.doReturn(expectedDisplay).when(this.displayReps).findAll();
List<Display> actualDisplay = this.displayService.findAll();
Assert.assertEquals(expectedDisplay, actualDisplay);
}
}
I am trying to write integration test case for one of my rest application which uses mongodb internally to persist the data
#DataMongoTest
#SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
public class MainControllerTest {
#LocalServerPort
private int port = 8080;
/* some test cases*/
}
but I am getting below error
java.lang.IllegalStateException: Configuration error: found multiple declarations of #BootstrapWith for test class [com.sample.core.controller.MainControllerTest]: [#org.springframework.test.context.BootstrapWith(value=class org.springframework.boot.test.autoconfigure.data.mongo.DataMongoTestContextBootstrapper), #org.springframework.test.context.BootstrapWith(value=class org.springframework.boot.test.context.SpringBootTestContextBootstrapper)]
looks like these two are mutually exclusive, so how to do the integration testing .
Use #AutoConfigureDataMongo with #SpringBootTest and this will resolve this ambiguity issue. #SpringBootTest and #DataMongoTest cannot be used together.
Answering to a very old post hoping it may help others.
#AutoConfigureDataMongo will connect to real database. In order to still use the embedded mongo, one can initiate the embedded mongoDb manually.
#SpringBootTest(classes = SubscriptionEventApplication.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class SubscriptionEventApiIntegrationTest {
#BeforeAll
static void setup() throws Exception {
startEmbeddedMongoDbManually();
}
private static void startEmbeddedMongoDbManually() throws IOException {
final String connectionString = "mongodb://%s:%d";
final String ip = "localhost";
final int port = 27017;
ImmutableMongodConfig mongodConfig = MongodConfig
.builder()
.version(Version.V3_5_5)
.net(new Net(ip, port, Network.localhostIsIPv6()))
.build();
MongodStarter starter = MongodStarter.getDefaultInstance();
mongodExecutable = starter.prepare(mongodConfig);
mongodExecutable.start();
mongoTemplate = new MongoTemplate(MongoClients.create(String.format(connectionString, ip, port)), "test");
}
#AfterAll
static void clean() {
mongodExecutable.stop();
}
#Test
public void test() {
.....
}
}
Purushothaman suggested starting embedded MongoDB server manually. I am suggesting to start it automatically using #DataMongoTest, but creating WebTestClient manually instead.
Kotlin code below, translates to Java trivially:
#DataMongoTest
// #ContextConfiguration may not be needed for your case.
#ContextConfiguration(
classes = [
Application::class,
MainController::class,
// Add more needed classes for your tests here.
// ...
]
)
#TestPropertySource(properties = ["spring.mongodb.embedded.version=4.0.12"])
class MainControllerTest(
#Autowired
private val mainController: MainController,
// Add more beans needed for your tests here.
// ...
) {
// Creating a WebTestClient is easy and
// can be done in different ways.
// Here is one of the possible ways.
private val webTestClient: WebTestClient =
WebTestClient.bindToController(mainController).build()
#Test
fun someTest() {
// ...
}
}
Hi i am trying to mock dao layer
my application has some class hire achy like this Application->parser->dao(interface)->dao implementation class
my problem is when i am mocking dao interface or daoimp class using mockito
in my test case they are not working simply test case going to db how to do make our test case to use these mocked objects
#RunWith(MockitoJUnitRunner.class)
public class CsvDataLoadServiceImplTest {
#Mock private MeteringDataDao meteringDataDao;
List<Object> persistedList;
Object meteringData;
List<Object> s=new ArrayList<Object>();
#SuppressWarnings({ "rawtypes", "unchecked" })
#Before public void setup(){
Mockito.doAnswer(new Answer<List<Object>>() {
#Override
public List<Object> answer(InvocationOnMock invocation) throws Throwable {
Object[] args = invocation.getArguments();
System.out.println("persist all");
if(persistedList == null){
persistedList = (List)args[0];
}
else
persistedList.addAll((List)args[0]);
return null;
}}).when(meteringDataDao).persistAll(anyList());
Mockito.doAnswer(new Answer<Object>() {
#Override
public Object answer(InvocationOnMock invocation) {
Object[] args = invocation.getArguments();
if(meteringData == null)
meteringData = (List)args[0];
return true;
}}).when(meteringDataDao).persist(anyObject());
}
#After public void tearDown(){
persistedList = null;
meteringData = null;
}
#Test
public void testDataAccuricy(){
CsvDataLoadService csvDataLoadService =new CsvDataLoadServiceImpl();
csvDataLoadService.loadRackspaceCsvData();
}
}
CsvDataLoadService csvDataLoadService = new CsvDataLoadServiceImpl();
You're constructing an instance of the service, but this instance doesn't use the DAO you mocked. It uses another one. You need something like
CsvDataLoadService csvDataLoadService =
new CsvDataLoadServiceImpl(meteringDataDao);
Your question is a little badly phrased, so sorry if I appear to have misunderstood you.
#JBNizet answer is correct, you're not using the mocked object, but rather than changing the code for a test you should simply change the test. This is always a best practice when writing your tests.
You haven't assigned the mocked object to the service, so I'm assuming that the MeteringDataDao object is actually instantiated inside the class you're attempting to test?
If so, then you will need something more powerful than Mockito (Unless you want to reproduce the capabilities of a more powerful already existing library). I would suggest PowerMockito, which I have used in the past for something exactly like this.
A good example of using powermockito to mock the constructor of a class can be seen in a few answers on SO already, so I'll just link to them rather than try and re-explain their already clear answers:
Powermock constructor mocking has no effect on the instantiated object
mockito mock a constructor with parameter
I have a method as follows
private void validate(String schemaName){
....
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);**strong text**
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Schema schema = factory.newSchema(schemaFile);
....
}
This method get called from another method which I need to test(Using easymock and powermock). I'm struggling to mock following line
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Can someone give me a clue on this?
Current Status
Following is the mock statement
expectNew(StreamSource.class, anyObject(InputStream.class)).andReturn(mockedobject);
Powermock.replay(mockedobject, StreamSrouce.class);
This throws the following exception.
org.powermock.reflect.exceptions.TooManyConstructorsFoundException: Several matching constructors found, please specify the argument parameter types so that PowerMock can determine which method you're referring to.
Matching constructors in class javax.xml.transform.stream.StreamSource were:
I think you can do it using powermock in the following way (I'm just following the tutorial here):
Let's say you're class looks like this:
public class MyClass {
private void validate(String schemaName) {
....
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);**strong text**
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Schema schema = factory.newSchema(schemaFile);
....
}
}
You should create a test class like this:
#RunWith(PowerMockRunner.class)
#PrepareForTest(MyClass.class)
public class MyClassTest {
private MyClass testedClass = new MyClass();
private ClassLoader mockedClassLoader = createMock(ClassLoader.class);
private InputStream mockedInputStream = createMock(InputStream.class);
#Before
public void setUp() {
PowerMock.createPartialMock(MyClass.class, "getClass");
expect(testedClass.getClass()).andReturn(mockedClassLoader);
expected(mockedClassLoader.getResourceAsStream(***You string***)).andReturn(mockedInputStream);
replayAll(); // Not sure if that's the name of the method - you need to call replay on all mocks
}
#Test
public void testValidate() {
// Run your test logic here
}
}
Please excuse me if some of the easymock methods I used are named a bit differently. But this is the basic idea.
I think you need one or a combination of the following. Use Powermock constructor mocking for the new StreamSource as documented here: Powermock MockConstructor. You will probably also need to use a mock for SchemaFactory which mean you will need to mock the static factory method call via Powermock: MockStatic