On 2/13/2017 7:16 PM, VikramSrinivasan Venkatakrishnan wrote:
I can see in the dependency injection video , you say the object
cannot be mocked since it's created with that class as it
I assume you meant it's created "within" that class..
beats the point of unit testing.
Correct.
Now lets say,
Person class is changed to support dependency injection (no spring
framework)
Dependency injection can happen in many different ways indeed
-via constructor
-via setter method
-via passing the dependency as a method argument
-Spring @Autowired
-CDI @Inject
Person.java
public class Person(){
Address address
public void Person (Address address){
this.address = address;
}
Yes, this is via constructor method
public String getPersonAddressInfo(){
return address.getInfo();
}
}
I am assuming this should work, meaning we should be able to Mock the
Address obejct ?
Correct.
But lets say the Person object is created in a Request Handler class.
While testing RequestHandler we wont be able to mock the objects right
? I hope you got my question. How do we handle this ?
You do mocking only during testing. The code below is in non-testing
(production)
environment and has nothing to do with testing. (In fact, even if you
do not
have any dependency injection scheme mentioned above, you can still inject
dependency to the target class.) I will demonstrate this during our
March 1st
codecamp if you want.
-S
RequestHandler.java
public void process (Person person){
Address address = new Address;
person = new Person (address);
person.getPersonAddressInfo();
}
Thanks,
Vikram
On Mon, Feb 13, 2017 at 6:58 PM, VikramSrinivasan Venkatakrishnan
<[email protected] <mailto:[email protected]>> wrote:
Please assist with my below question.
Let's say we are refactoring the Person class.
Before Person class:
Person.java has a method ,
public String getPersonAddressInfo(){
Address address = new Address ();
return address.getInfo();
}
After refactor Person class:
@Autowired
Address address;
public String getPersonAddressInfo(){
return address.getInfo();
}
Now , if we write a junit as below, mocking the address object,
@Mock
Address address;
@Inject Mock
Person person;
@setup{ required code}
@Test public void
should_return_adress_info_as_something(){
Mockito.when(address.getInfo()),thenReturn("Westbrough,MA");
assertThat(person.getPersonAddressInfo,
equalTo("Westborough,MA"));
}
The method should_return_adress_info_as_something works only for
the After class and not Before class. Why is this the case ? Is it
because we are creating a new object in the Before Person Class ?
Now, in the After class example that was given, let's say my prod
app is not on spring framework , how would i get an instance of my
address object ?
Kindly assist.
Thanks,
Vikram
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