Ignoring not void method inside testing method in Mockito
In class Account I have a method public Account reserveA() which I want to test, inside reserveA is called a method public Bank DAO.createB(). Is there a way to call reserveA() in test method but ignore call DAO.createB()? Non of these methods are void.
I tried:
doNothing().when(Account).reserveA(param1, param2);
but it's not the proper way.
java junit mockito
edited Nov 22 '18 at 20:31
wojteo
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
add a comment |
In class Account I have a method public Account reserveA() which I want to test, inside reserveA is called a method public Bank DAO.createB(). Is there a way to call reserveA() in test method but ignore call DAO.createB()? Non of these methods are void.
I tried:
doNothing().when(Account).reserveA(param1, param2);
but it's not the proper way.
java junit mockito
edited Nov 22 '18 at 20:31
wojteo
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
In test method, comment the line where thecreateB()function is executed
– javimovi
Nov 22 '18 at 14:09
1
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
@javimovicreateBis not even called in test method. JustreserveAis called and inside thiscreateBis called.
– Michu93
Nov 22 '18 at 14:12
add a comment |
In class Account I have a method public Account reserveA() which I want to test, inside reserveA is called a method public Bank DAO.createB(). Is there a way to call reserveA() in test method but ignore call DAO.createB()? Non of these methods are void.
I tried:
doNothing().when(Account).reserveA(param1, param2);
but it's not the proper way.
java junit mockito
edited Nov 22 '18 at 20:31
wojteo
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
In class Account I have a method public Account reserveA() which I want to test, inside reserveA is called a method public Bank DAO.createB(). Is there a way to call reserveA() in test method but ignore call DAO.createB()? Non of these methods are void.
I tried:
doNothing().when(Account).reserveA(param1, param2);
but it's not the proper way.
java junit mockito
java junit mockito
edited Nov 22 '18 at 20:31
wojteo
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
edited Nov 22 '18 at 20:31
wojteo
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
edited Nov 22 '18 at 20:31
wojteo
3301522
edited Nov 22 '18 at 20:31
wojteo
3301522
edited Nov 22 '18 at 20:31
wojteo
3301522
3301522
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
asked Nov 22 '18 at 14:03
Michu93Michu93
836728
836728
In test method, comment the line where thecreateB()function is executed
– javimovi
Nov 22 '18 at 14:09
1
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
@javimovicreateBis not even called in test method. JustreserveAis called and inside thiscreateBis called.
– Michu93
Nov 22 '18 at 14:12
add a comment |
In test method, comment the line where thecreateB()function is executed
– javimovi
Nov 22 '18 at 14:09
1
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
@javimovicreateBis not even called in test method. JustreserveAis called and inside thiscreateBis called.
– Michu93
Nov 22 '18 at 14:12
In test method, comment the line where the
createB() function is executed– javimovi
Nov 22 '18 at 14:09
In test method, comment the line where the
createB() function is executed– javimovi
Nov 22 '18 at 14:09
1
1
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
@javimovi
createB is not even called in test method. Just reserveA is called and inside this createB is called.– Michu93
Nov 22 '18 at 14:12
@javimovi
createB is not even called in test method. Just reserveA is called and inside this createB is called.– Michu93
Nov 22 '18 at 14:12
add a comment |
1 Answer
1
active
oldest
votes
doNothing() is reserved only for void methods.
If your method returns something, then you are required to do as well (or throw exception).
Depending on complexity of your Account.reserveString(), you may need to mock some more than just this one method call if result is used somewhere else.
Trying to use doNothing() on non-void method results in error:
org.mockito.exceptions.base.MockitoException:
Only void methods can doNothing()!
Example of correct use of doNothing():
doNothing().
doThrow(new RuntimeException())
.when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called
Consider such classes:
@Component
public class BankDao {
public BankDao() {}
public void createVoid() {
System.out.println("sth - 1");
}
public String createString(){
return "sth - 2";
}
}
@Service
public class Account {
@Autowired
private final BankDao DAO;
public Account(BankDao dao) {
this.DAO = dao;
}
public void reserveVoid() {
System.out.println("before");
DAO.createVoid();
System.out.println("after");
}
public void reserveString() {
System.out.println(DAO.createString());
}
}
For which Test class is made:
@RunWith(MockitoJUnitRunner.class)
public class AccountTest {
@Mock
private BankDao bankDao;
@InjectMocks
private Account account;
@Test
public void reserveVoid_mockBankDaoAndDontUseRealMethod() {
doNothing().when(bankDao).createVoid();
account.reserveVoid();
}
@Test
public void reserveString_mockBankDaoAndDontUseRealMethod() {
when(bankDao.createString()).thenReturn("nothing");
account.reserveString();
}
}
Running such a test will produce:
nothing
before
after
If you change @Mock to @Spy and remove lines with doNothing() and when(), then you'll be calling original methods. Result would be:
sth - 2
before
sth - 1
after
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
doNothing() is reserved only for void methods.
If your method returns something, then you are required to do as well (or throw exception).
Depending on complexity of your Account.reserveString(), you may need to mock some more than just this one method call if result is used somewhere else.
Trying to use doNothing() on non-void method results in error:
org.mockito.exceptions.base.MockitoException:
Only void methods can doNothing()!
Example of correct use of doNothing():
doNothing().
doThrow(new RuntimeException())
.when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called
Consider such classes:
@Component
public class BankDao {
public BankDao() {}
public void createVoid() {
System.out.println("sth - 1");
}
public String createString(){
return "sth - 2";
}
}
@Service
public class Account {
@Autowired
private final BankDao DAO;
public Account(BankDao dao) {
this.DAO = dao;
}
public void reserveVoid() {
System.out.println("before");
DAO.createVoid();
System.out.println("after");
}
public void reserveString() {
System.out.println(DAO.createString());
}
}
For which Test class is made:
@RunWith(MockitoJUnitRunner.class)
public class AccountTest {
@Mock
private BankDao bankDao;
@InjectMocks
private Account account;
@Test
public void reserveVoid_mockBankDaoAndDontUseRealMethod() {
doNothing().when(bankDao).createVoid();
account.reserveVoid();
}
@Test
public void reserveString_mockBankDaoAndDontUseRealMethod() {
when(bankDao.createString()).thenReturn("nothing");
account.reserveString();
}
}
Running such a test will produce:
nothing
before
after
If you change @Mock to @Spy and remove lines with doNothing() and when(), then you'll be calling original methods. Result would be:
sth - 2
before
sth - 1
after
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
add a comment |
doNothing() is reserved only for void methods.
If your method returns something, then you are required to do as well (or throw exception).
Depending on complexity of your Account.reserveString(), you may need to mock some more than just this one method call if result is used somewhere else.
Trying to use doNothing() on non-void method results in error:
org.mockito.exceptions.base.MockitoException:
Only void methods can doNothing()!
Example of correct use of doNothing():
doNothing().
doThrow(new RuntimeException())
.when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called
Consider such classes:
@Component
public class BankDao {
public BankDao() {}
public void createVoid() {
System.out.println("sth - 1");
}
public String createString(){
return "sth - 2";
}
}
@Service
public class Account {
@Autowired
private final BankDao DAO;
public Account(BankDao dao) {
this.DAO = dao;
}
public void reserveVoid() {
System.out.println("before");
DAO.createVoid();
System.out.println("after");
}
public void reserveString() {
System.out.println(DAO.createString());
}
}
For which Test class is made:
@RunWith(MockitoJUnitRunner.class)
public class AccountTest {
@Mock
private BankDao bankDao;
@InjectMocks
private Account account;
@Test
public void reserveVoid_mockBankDaoAndDontUseRealMethod() {
doNothing().when(bankDao).createVoid();
account.reserveVoid();
}
@Test
public void reserveString_mockBankDaoAndDontUseRealMethod() {
when(bankDao.createString()).thenReturn("nothing");
account.reserveString();
}
}
Running such a test will produce:
nothing
before
after
If you change @Mock to @Spy and remove lines with doNothing() and when(), then you'll be calling original methods. Result would be:
sth - 2
before
sth - 1
after
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
add a comment |
doNothing() is reserved only for void methods.
If your method returns something, then you are required to do as well (or throw exception).
Depending on complexity of your Account.reserveString(), you may need to mock some more than just this one method call if result is used somewhere else.
Trying to use doNothing() on non-void method results in error:
org.mockito.exceptions.base.MockitoException:
Only void methods can doNothing()!
Example of correct use of doNothing():
doNothing().
doThrow(new RuntimeException())
.when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called
Consider such classes:
@Component
public class BankDao {
public BankDao() {}
public void createVoid() {
System.out.println("sth - 1");
}
public String createString(){
return "sth - 2";
}
}
@Service
public class Account {
@Autowired
private final BankDao DAO;
public Account(BankDao dao) {
this.DAO = dao;
}
public void reserveVoid() {
System.out.println("before");
DAO.createVoid();
System.out.println("after");
}
public void reserveString() {
System.out.println(DAO.createString());
}
}
For which Test class is made:
@RunWith(MockitoJUnitRunner.class)
public class AccountTest {
@Mock
private BankDao bankDao;
@InjectMocks
private Account account;
@Test
public void reserveVoid_mockBankDaoAndDontUseRealMethod() {
doNothing().when(bankDao).createVoid();
account.reserveVoid();
}
@Test
public void reserveString_mockBankDaoAndDontUseRealMethod() {
when(bankDao.createString()).thenReturn("nothing");
account.reserveString();
}
}
Running such a test will produce:
nothing
before
after
If you change @Mock to @Spy and remove lines with doNothing() and when(), then you'll be calling original methods. Result would be:
sth - 2
before
sth - 1
after
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
doNothing() is reserved only for void methods.
If your method returns something, then you are required to do as well (or throw exception).
Depending on complexity of your Account.reserveString(), you may need to mock some more than just this one method call if result is used somewhere else.
Trying to use doNothing() on non-void method results in error:
org.mockito.exceptions.base.MockitoException:
Only void methods can doNothing()!
Example of correct use of doNothing():
doNothing().
doThrow(new RuntimeException())
.when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called
Consider such classes:
@Component
public class BankDao {
public BankDao() {}
public void createVoid() {
System.out.println("sth - 1");
}
public String createString(){
return "sth - 2";
}
}
@Service
public class Account {
@Autowired
private final BankDao DAO;
public Account(BankDao dao) {
this.DAO = dao;
}
public void reserveVoid() {
System.out.println("before");
DAO.createVoid();
System.out.println("after");
}
public void reserveString() {
System.out.println(DAO.createString());
}
}
For which Test class is made:
@RunWith(MockitoJUnitRunner.class)
public class AccountTest {
@Mock
private BankDao bankDao;
@InjectMocks
private Account account;
@Test
public void reserveVoid_mockBankDaoAndDontUseRealMethod() {
doNothing().when(bankDao).createVoid();
account.reserveVoid();
}
@Test
public void reserveString_mockBankDaoAndDontUseRealMethod() {
when(bankDao.createString()).thenReturn("nothing");
account.reserveString();
}
}
Running such a test will produce:
nothing
before
after
If you change @Mock to @Spy and remove lines with doNothing() and when(), then you'll be calling original methods. Result would be:
sth - 2
before
sth - 1
after
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
edited Nov 22 '18 at 20:12
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
answered Nov 22 '18 at 20:07
wojteowojteo
3301522
3301522
add a comment |
add a comment |
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In test method, comment the line where the
createB()function is executed– javimovi
Nov 22 '18 at 14:09
1
It seems you're asking how to use Mockito. Have you read its documentation? It's quite easy and pleasant to read. And you'll learn a lot of stuff. static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/…. If you actually want an answer, then post code.
– JB Nizet
Nov 22 '18 at 14:12
@javimovi
createBis not even called in test method. JustreserveAis called and inside thiscreateBis called.– Michu93
Nov 22 '18 at 14:12