Possible to generate truth.dev Subjects for my domain model automaticly? - unit-testing

Question

I'm a bit fan of Google's Truth.dev library. I have a large domain model in Java, and want to add several little custom assertions for them in my own Subject files. It's a bit of pain though to create the boiler plate for the Subjects every time though, and there are lot's obvious / straight forward assertions that I'd like to have by default.
Something similar to AssertJ's generator project.
For example, given the following simple model (mine is much more complicated):
#lombok.Value
public class Car {
String name;
Make make;
int colourId;
public enum Make {PLASTIC, METAL}
}
I would like to be able to do the following without coding anything myself:
assertThat(car).hasMakeEqualTo(PLASTIC);
assertThat(car).hasColourId().isAtLeast(5);
assertThat(car).hasName().ignoringTrailingWhiteSpace().equalTo("sally");
or
assertThat(person).hasAddress().hasStreet().ignoringCase().endsWith('Rd')

Answer 1

Upon my discovery of the lovely Google Truth, I was an instant convert from AssertJ. However I didn't like the boiler plate required to the get the full potential out of it. I also had just found AssertJ's code generator. So I made one for Google Truth.
You can find out everything about it on it's GitHub page.
Assertion failures for the assertions in the stated question with Truth look like:
assertThat(car).hasName().ignoringTrailingWhiteSpace().equalTo("sally");
value of: car.getName().
expected: sally
but was : yuYU3KZU3c
car was : Car(name=yuYU3KZU3c, make=METAL, colourId=420434249)
assertThat(car).hasMakeEqualTo(PLASTIC);
expected Make to be equal to: PLASTIC
but was : Car(name=7lvPSNeMJj, make=PLASTIC, colourId=1732244871)
assertThat(car).hasColourId().isAtLeast(8);
value of : car.getColourId()
expected to be at least: 8
but was : 5
car was : Car(name=oYZIeRofZn, make=PLASTIC, colourId=5)
To achieve the above, you simply add it to your build.
<plugin>
<groupId>io.stubbs.truth</groupId>
<artifactId>truth-generator-maven-plugin</artifactId>
<configuration>
<classes>
<param>io.stubbs.truth.generator.example.Car</param>
</classes>
</configuration>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
It is very powerful and flexible. Very keen to get feedback and implement more ideas.