Unit tests generation in Mapstruct

Pooja Venkatram

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Nov 12, 2016, 11:37:43 AM11/12/16

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Hi,

As I am using Mapstruct for my project, I feel the need for a Unit Test generation just like how Mapstruct has Mapping Code generation. We should have a way of generating a Unit test for the class that was just mapped by Mapstruct. We can just do Asserts on the source and target fields that we mapped. The user would obviously have to set the values for the objects, but apart from that he should be able to run the code as is.

Best

Pooja

Sjaak Derksen

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Nov 14, 2016, 3:44:34 PM11/14/16

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Hi Pooja,

You might want to try assertReflectionEquals from: http://www.unitils.org/tutorial-reflectionassert.html in combination with reverse mapping. So: prepare an object(graph). Map it with MapStruct. Do a reverse map with MapStruct and run assertReflectionEquals.

I use this roundtrip mapping all the time for mappings from JAXB to DTO and vice versa.

Best regards,

Sjaak

Pooja Venkatram

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Nov 21, 2016, 7:32:32 PM11/21/16

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Hi Sjaak,

Thank you so much for your response. I will take a look into this. the only problem with reverse mapping is that some of the objects are not reverse mapping compatible(like immutable fields). Do you deal with any such fields or are all your fields reverse mappable?

Best

Pooja

Sjaak Derksen

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Dec 5, 2016, 2:56:10 PM12/5/16

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Hi Pooja,

Sorry for my late response. For immutable fields I don't have a direct solution. You could however make the problem a bit smaller by setting them manual before you run reflectionAssertEquals and test those remaining ones with regular asserts on the target side.