Awesome content, pretty straight forward. Some people are complaining about communication. Don't worry about accent/communication as long as your content is good.👍🏻
@@Javatechie Nice and presized content. I just wanted to know when you're getting user with address="Bangalore", then the user returned is having address as "USA". So, could you please help me understand that.
@@nikhiljhawar4612 That's a good question. If you see the service method , it has no business logic. as the repository method is mocked here, it really not checking bangalore . It will always give the usa user object, because the method is mocked. In real time, the service method will have business logic to check bangalore, this video helps to understand the concept. @10.34, he used a term "for testing purpose ". Hope this comment helps.
Very very helpful. You are a life saver. I was stuck on this issue for so long. And trying your method solved the issue within seconds. Thank you so much!!!
Before this video i watched many others related to Unit test, and the make it more difficult. After watching your video, i started to implement tests directly on my codes!!! thanks for making it simple to understand.
Hi Team , don't be confuse in repository.findUserByAddress() , if you observe when(dao.findUserByAddress(any)).thenReturn(Any user object) so irrespective of any address value i will get that user object which i mention in thenReturn , that's what mockito does for use
Thanks for covering Mockito. I believe this is Junit 4. Can you please cover more test cases with Junit 5 and with different situations including how to handle exceptions and all?
@@NeverQuitOk That's a constructive criticism. From the bottom of my heart, I'm wishing Java Techie(Basant) a great success. He's & will always be my fav tech TH-camr.
Very good tutorial..very simple..small request.. some words are difficult to undertstand while u explaining so that some points are missing...try to make it clear...rest is very best..U have done a simple and great job..
sir , Wanted to say , i watched your most of the video , and i cleared my interview for onsite , thanks to you by heart , really like your way of expressing the topics , thanks a lot sir , your videos helped me alot, feeling like you as god messenger to help me , you are from West bengal or south ?
You always make things easier for me to understand. If I may ask do you have full completed course and other full courses that are related to spring framework
Hi, thank you for the great video. One question - You did not add when(repo.delete).thenReturn(user). Is it not needed in delete case to make sure actual delete method is not called?
Nice Video & explanation! Why the GetUserByAddress method is returning 1 i(searching for Bangalore our mocked DB has USA) ? assertEquals should be (1,0) I am new to this Am I missing something Thanks in advance
@@Javatechie I did watch it more than once this a new concept to me & wasn't sure why you are returning 1 if you are searching for Banglore which doesn't exist in your DB returned data
on the 2nd test (starting 11:00), the dummy data address is "USA" and we are searching for "Bangalore", why it still come with 1 result? It should be 0 correct?
Persistent applications are especially important for which to write tests. You can have a functioning product which gives no errors, deploy said product, and then find out some time later that only half of your data persisted. Or even worse, that the DB overwrites itself each time the program is restarted.
Hello Sir, Thanks for the session. It really helped just had some doubts. For creating test cases for DAO layer do we mock the methods without hitting db or should perform the db operation and then test?
Good explanation. I have one query, you explained unit testing from service to repository flow. What about end to end unit testing with mockito i.e Controller->Service->Repository ?
Already I. Had one video to write test case for controller using mock MVC . It will be more difficult to show test case for all layer in single video.thats why I splited it as separate video.
No it's just to check whether my delete method is working or not in service. It won't call your repo it will simply bypass dao call that is what the purpose of mockito right
I'm fairly new to Java (and Spring). I see from the source code that 'UserRepository' is of type Interface. My understanding of @MockBean is that it instantiates an object of type 'UserRepository' within Spring's application container. But this is confusing to me, since I believe that Interfaces cannot be instantiated, only classes. So how does @MockBean instantiate an object of type 'UserRepository', which is an interface? Thanks for the great tutorial btw!
You wrote addrsss as "Bangalore". And in mock data there were no user with address Bangalore. Ideally it should fail because in asertEquals you wrote return value as 1.
@@kishanlal676 & @Aman Jain no this is what mockito does , why you are expecting failure here if you observe when(dao.findUserByAddress(any)).thenReturn(Any user object) so irrespective of any address value i will get that user object which i mention in thenReturn , what's confusing you here
How to test the Data Layer ? There we won't use mockito ,right? Since we want to test the Data layer with actual values retrieved, inserted, updated and deleted from Database?
Thank you sir. I have 1 question, when running 1st testcase, I understand what findAll() does, but when was those 2 entries inserted in mock repository?
Sir search is not working like you provide anything in adress it will give you same values you passes as parameters in return statement .thenReturn(Stream.of(new Post(values))); It must be like this if the address you provided matches then it will give values otherwise give empty as result but in both case it is giving exact same values
Sir do you have any video on spring security? Can you please tell me about this? I am a beginner and i recently made a REST-API of payment wallet app using spring boot with jpa and now after watching this video I'll add mokito in it as well, it will be wonderful if you give me some idea about spring security so that I can add this too in my project.
Thank you bro. It's really helpful and can you provide the depth knowledge for same like exception mocking part and if we have more parameters in method how we can handle.
@@Javatechie is there are any methods to clear cache of unit test?exception is no value at json path but it pass individually when I run whole class this exception occurs
Hello. Like you have getByAdress method, i have a getById function that has a Optional return type. So, while writing test cases for it, it gives a type mismatch error while writing the when/then clause. Any ideas?
Hi on line No 51 how you were able to do assertEquals on two objects. I had to override equals method and implement it to do equals as I was getting false because it was just comparing the reference value of those 2 objects. Please guide me on this. Thanks,
also it would be good to say that there is no any sense to test JPA methods which provided for us as an API for free, because its already have been tested. But custom methods with @Query definitely should be tested.
Sir First of all I would like to appreciate your work it's really helpfull for the beginers. I am having one doubt :- @Test public void getUserbyAddressTest() { String address = "Bangalore"; when(repository.findByAddress(address)) .thenReturn(Stream.of(new User(376, "Danile", 31, "USA")).collect(Collectors.toList())); assertEquals(1, service.getUserbyAddress(address).size()); } Here you are using address as Bagolore , But in the new User address as Danile , so since when we call service.getUserbyAddress(address).size() this you told that it won't touch db that's ok But that address is not matching naa so why it gives size as 1 , does this actually taking care of Banglore if yes please clarify it OR my thinking is wrong w.r.t to this topic Thank you SIR and Love u for your lectures
I commented on this please checkout once . when (repository.findByAddress(any)).then return(User object); So here it doesn't matter what address I gave , anything I can give it will return me the object which I mentioned in thenReturn method
Abhishek I would suggest you to first learn how we can connect database MySQL or mongo DB using spring boot . Here I used spring boot with mongo Database and all required datasource details configured in application.properties Here is the link to learn spring boot with mongodb th-cam.com/video/k5PeywcbVYc/w-d-xo.html
Class someClass { public void someMethod() { String str1 = someService.method(); String str2 = someService2.method2(str1); syso( Str2.length() ); } } How can i test this if my method is dependent on multiple service.. And should i use mock or injectMocks? Please help
you save my life, because of this i passed interview
I'm very happy for you guy
Wow 👌
You are still alive . After lots of lay offs 😮
Be positive buddy. Please don't repeat it again
what question they asked bro?
Awesome content, pretty straight forward. Some people are complaining about communication. Don't worry about accent/communication as long as your content is good.👍🏻
Thanks Sayari 😊
@@Javatechie Nice and presized content. I just wanted to know when you're getting user with address="Bangalore", then the user returned is having address as "USA". So, could you please help me understand that.
@@nikhiljhawar4612 That's a good question. If you see the service method , it has no business logic. as the repository method is mocked here, it really not checking bangalore . It will always give the usa user object, because the method is mocked. In real time, the service method will have business logic to check bangalore, this video helps to understand the concept. @10.34, he used a term "for testing purpose ". Hope this comment helps.
@@Javatechie Thankyou ,what i learn till now thats only from you.very helpfull for me ,
Very very helpful. You are a life saver. I was stuck on this issue for so long. And trying your method solved the issue within seconds. Thank you so much!!!
Before this video i watched many others related to Unit test, and the make it more difficult. After watching your video, i started to implement tests directly on my codes!!! thanks for making it simple to understand.
Thanks buddy 😊
very helpful. like how you showed what the mock object does using a print statement in service layer.
❤️ you brother. U have solution to each and every problem. May god bless you for the service you are doing towards the people
The only video where i learned this concept properly, amazing
Simple and Concise. 100% to the point content. Thank you so much for this educational content.
Best channel ever... Tomorrow I have interview..Revision of topics
The best best best channel 🙏❤really every video awesome, the way he is explaining very easy to understand 🙏🙏thank you so much!!!!!
Thanks Krish ☺️
Hi Team , don't be confuse in repository.findUserByAddress() , if you observe when(dao.findUserByAddress(any)).thenReturn(Any user object) so irrespective of any address value i will get that user object which i mention in thenReturn , that's what mockito does for use
In the code coverage it is not covering all the clasess what should I do please help me
Thanks for proper and complete video for API basic testing.
Thanks for covering Mockito. I believe this is Junit 4. Can you please cover more test cases with Junit 5 and with different situations including how to handle exceptions and all?
You just saved my all time n efforts to learn mockito.
Thanks
Very clear explanation of mockito and junit. Thank you very much.
When I am waching your vedios easy to understand sir 👍Thank you sir
Thank you so much. you made my UT very easy now. very simple and easy way to understand.
Hi, if you having this warning: "no test found with test runner junit 5", you need to import:
import org.junit.jupiter.api.Test;
insted of
import org.junit.Test;
Btw: Thanks Java Techie
Very Good Example !! Thanks for all efforts
Brilliant, precise and to the point video... Thank you Sir...
Sir, thanks for explanation in easy to understand language
point to point content, this really helpful for us.
This saved my time. Thanks a lot! Please work on your communication, You'll surely reach heights.
what a negative thinker you are. Useless guy thoo
@@NeverQuitOk That's a constructive criticism. From the bottom of my heart, I'm wishing Java Techie(Basant) a great success. He's & will always be my fav tech TH-camr.
Thank you for the videos. Very helpful. Keep doing the good work. :)
Very good tutorial..very simple..small request.. some words are difficult to undertstand while u explaining so that some points are missing...try to make it clear...rest is very best..U have done a simple and great job..
communication is good as easy to understand and content is also good thanks
Thanks buddy
sir , Wanted to say , i watched your most of the video , and i cleared my interview for onsite , thanks to you by heart , really like your way of expressing the topics , thanks a lot sir , your videos helped me alot, feeling like you as god messenger to help me , you are from West bengal or south ?
Hi Veena i am so glad to know your achievement Keep learning 😃
@@Javatechie yes sir , now also learning from your videos and implementing the thing in my new project , Thanks a lot sir
thank you so much SIR very nice and clear explanation!
Thank you very much for your videos. I found them very useful.
Great Job. easy to understand. I would appreciate if you elaborate more.
superb sir , good explanation.
So helpful. I suggest your video to many of my colleagues
Thanks buddy 😊
No non-sense guy with awesome content!!
Thanks buddy 😊
You always make things easier for me to understand. If I may ask do you have full completed course and other full courses that are related to spring framework
Thank you , If you checkout my playlist all the content you can get
Hi, thank you for the great video. One question - You did not add when(repo.delete).thenReturn(user). Is it not needed in delete case to make sure actual delete method is not called?
Superb explanation Sir. Many thanks 👍
Very helpful, Thank you for this useful content
Nice Video & explanation! Why the GetUserByAddress method is returning 1 i(searching for Bangalore our mocked DB has USA) ? assertEquals should be (1,0) I am new to this Am I missing something Thanks in advance
Request you to revise video once again .I could answer your question but u want you to understand it 🤫
@@Javatechie I did watch it more than once this a new concept to me & wasn't sure why you are returning 1 if you are searching for Banglore which doesn't exist in your DB returned data
I have learnt a lot from you. Awesome tutorials
on the 2nd test (starting 11:00), the dummy data address is "USA" and we are searching for "Bangalore", why it still come with 1 result? It should be 0 correct?
great video, concise and very helpful.
Awesome your effort please keep continue brother.
Hi, very nice your video. In the example you used a list in FindALL. How would you test if you were a PAGE type? I can't find an easy test example.
Not sure need to check
Persistent applications are especially important for which to write tests. You can have a functioning product which gives no errors, deploy said product, and then find out some time later that only half of your data persisted. Or even worse, that the DB overwrites itself each time the program is restarted.
Am not getting you . What you are trying to convey ?
Great job brother👍👍👍
Thanks Basant Bhai . You Rock.........................
Thanks for sharing the knowledge. Please share how to test put method also.
Hello Sir, Thanks for the session. It really helped just had some doubts.
For creating test cases for DAO layer do we mock the methods without hitting db or should perform the db operation and then test?
No you should mock all the db call
Good explanation. I have one query, you explained unit testing from service to repository flow. What about end to end unit testing with mockito i.e Controller->Service->Repository ?
Already I. Had one video to write test case for controller using mock MVC .
It will be more difficult to show test case for all layer in single video.thats why I splited it as separate video.
@@Javatechie ok thanks for the reply. is it possible to write unit tests from end to end using mockito ?
Yes for all layer we can write like controller,service and repository I already uploaded 3 videos using mockito please have a look
It's very clear.. thank you bro
Very well explained I have one doubt like if user id is checking whether he is existing or not then how this dummy data will works?
Nice and simple video
Your videos are super helpful. Why dont you cover these videos in Hindi? This way you will explain it better and would be easy to grasp.
It's about reachability. People not knowing Hindi will miss this valuable content
In this did the delete method why we are calling service.deleteuser directly ? I guess we have to use when(service.delete()).then kind of syntax?
Here we are mocking the repository layer not the service layer buddy .
@@Javatechie bro can u tell why we are deleting user which is not created in db?is it for verifying that whether repo is called or not?
No it's just to check whether my delete method is working or not in service. It won't call your repo it will simply bypass dao call that is what the purpose of mockito right
Thank you so much for the useful content
I'm fairly new to Java (and Spring). I see from the source code that 'UserRepository' is of type Interface. My understanding of @MockBean is that it instantiates an object of type 'UserRepository' within Spring's application container. But this is confusing to me, since I believe that Interfaces cannot be instantiated, only classes. So how does @MockBean instantiate an object of type 'UserRepository', which is an interface? Thanks for the great tutorial btw!
Thanks for nice explanation.
Thumbs up! before even seeing the video
You wrote addrsss as "Bangalore". And in mock data there were no user with address Bangalore. Ideally it should fail because in asertEquals you wrote return value as 1.
Hi satyajit , Mention duration please didn't remember the syntax
@@Javatechie 11:02 . Please check
same doubt
Yeah, I don't know how the test gets passed! It should return 0 as he didn't have any user with Bangalore as an address.
@@kishanlal676 & @Aman Jain no this is what mockito does , why you are expecting failure here if you observe when(dao.findUserByAddress(any)).thenReturn(Any user object) so irrespective of any address value i will get that user object which i mention in thenReturn , what's confusing you here
Thanks for sharing this info.
Should you only add tests for service layer? Or should you also add tests for "controller" and "data" layer also? Thanks
We should write for controller layer , please check my mockmvc tutorial
How to test the Data Layer ? There we won't use mockito ,right? Since we want to test the Data layer with actual values retrieved, inserted, updated and deleted from Database?
i like that way u teaching
Thank you sir. I have 1 question, when running 1st testcase, I understand what findAll() does, but when was those 2 entries inserted in mock repository?
It's not inserted to dB those are mock Data
Sir search is not working like you provide anything in adress it will give you same values you passes as parameters in return statement
.thenReturn(Stream.of(new Post(values)));
It must be like this if the address you provided matches then it will give values otherwise give empty as result but in both case it is giving exact same values
Sir do you have any video on spring security? Can you please tell me about this? I am a beginner and i recently made a REST-API of payment wallet app using spring boot with jpa and now after watching this video I'll add mokito in it as well, it will be wonderful if you give me some idea about spring security so that I can add this too in my project.
Please check out the below complete video on spring security
th-cam.com/video/5jDrBD4Y1MI/w-d-xo.html
@@Javatechie Thank you so much sir
insted of repository call if we need to call another service then also we need to use mock object??????
Yes
Any idea like how can we test update method by Mockito
Please checkout my reactive programming integration test and do follow same
good vidoe..very helpful
Thanks Sir! I also want to clarify test case for exception handling, So please upload a video for that as well...... Thank you so much sir.
can you tell me when to use wevmvc test or when this service test?
bhai bhala video heichi .......
Thank you bro. It's really helpful and can you provide the depth knowledge for same like exception mocking part and if we have more parameters in method how we can handle.
I will do that
Very nicley explained
Thanks
When I run whole test class some methods are failing, when I run single test in class then it is passing.why so
Check the exception it will give you hints otherwise if you are unable to find please share your GitHub link .I will check this out
@@Javatechie is there are any methods to clear cache of unit test?exception is no value at json path but it pass individually when I run whole class this exception occurs
You write test cases for one controller class.... If I want to write multiple control what I need to do...
Hello. Like you have getByAdress method, i have a getById function that has a Optional return type. So, while writing test cases for it, it gives a type mismatch error while writing the when/then clause. Any ideas?
Optional.get() will give you object please do try with this
clean explaination
Your videos r very useful sir....
Hi on line No 51 how you were able to do assertEquals on two objects. I had to override equals method and implement it to do equals as I was getting false because it was just comparing the reference value of those 2 objects.
Please guide me on this.
Thanks,
also it would be good to say that there is no any sense to test JPA methods which provided for us as an API for free, because its already have been tested. But custom methods with @Query definitely should be tested.
You have good concepts. Just work on communication. keep it up !
Hey thanks easy to understand, but this is only the service classes, how do we do for overall project? Ex controllers, repos etc !!
For controller you need to use mockMVC already I uploaded that video
th-cam.com/video/fN8VAdYfJB8/w-d-xo.html
@@Javatechie thank you 😀
its simple, straight and Good
Good explanation 👍
Sir First of all I would like to appreciate your work it's really helpfull for the beginers.
I am having one doubt :-
@Test
public void getUserbyAddressTest() {
String address = "Bangalore";
when(repository.findByAddress(address))
.thenReturn(Stream.of(new User(376, "Danile", 31, "USA")).collect(Collectors.toList()));
assertEquals(1, service.getUserbyAddress(address).size());
}
Here you are using address as Bagolore , But in the new User address as Danile , so since when we call service.getUserbyAddress(address).size() this you told that it won't touch db that's ok
But that address is not matching naa so why it gives size as 1 , does this actually taking care of Banglore
if yes please clarify it OR my thinking is wrong w.r.t to this topic
Thank you SIR and Love u for your lectures
I commented on this please checkout once .
when (repository.findByAddress(any)).then return(User object);
So here it doesn't matter what address I gave , anything I can give it will return me the object which I mentioned in thenReturn method
I have a question. If the save user test case does not save the data in database then why are we saving it?
While performing integration test we shouldn't persist data into actual DB .
That's why people used mockito to by pass the flow
Here in this case your mocking the repo class, but I cannot see where in your code you have created the DB connections ?
Abhishek I would suggest you to first learn how we can connect database MySQL or mongo DB using spring boot .
Here I used spring boot with mongo Database and all required datasource details configured in application.properties
Here is the link to learn spring boot with mongodb
th-cam.com/video/k5PeywcbVYc/w-d-xo.html
What is the basic format of writing JUnit test case for @requestmapping in spring boot application?
You need to use MockMvc
Please refer : th-cam.com/video/fN8VAdYfJB8/w-d-xo.html
nice detailing thanks... is there a way that we test from controller API invocation directly?
😊😊 Yes using mockMVC we can , already uploaded please have a look
Let say you have function that returns nothing but u want to mock a service call that is being down with that function how would I do that?
You need to go for PowerMockito
Can we write junit test cases for dto pojo and service layer separately ? But very useful video overall
Yes we can write separate test case for service , dao and controller
Thanks for this highly helpful video. How can we mock test IntegrationFlow in spring boot ? Any pointers to this is highly appreciated. Thanks!
Mockmvc will helps you for integration test
clean and well explained. Thanks man.
Kindly please let me know if you have any video with the same content but for TDD development
Hello Sir,
Do we need to create test cases for entities and Dao classes as well or just service is fine since it contains all the business logic?
Yes service is enough
when(repository.findall()).thenReturn()
How did the value get changed into a stream of objects? was it a shortcut?
It's inbuilt to mockito component, based on your when(argument return type) thenReturn() will always expect same return type
@@Javatechie Will that gets automatically populated with dummy data or you pasted that data over there?
You need to pass data to that mockito method
@@Javatechie Ok, Thanks
Can you send the link for the next mockito kit series I don't find it please
Class someClass {
public void someMethod()
{
String str1 = someService.method();
String str2 = someService2.method2(str1);
syso( Str2.length() );
}
}
How can i test this if my method is dependent on multiple service..
And should i use mock or injectMocks?
Please help
You should use either @MockBean or @InjectMock
@@Javatechie should i use two when().thenReturn for above 2 dependent service?
Yes
Thank you very much, sir. Great explanation. :)