I currently get extremely long lines when a

dataClass1 shouldBe dataClass2

test fails. Is there any way it could be pretty printed so that I needn't spend minutes manually formatting it every time to see the diff? I think I saw Gradle pretty print a

List

or something I had once. Sorry if this is unrelated to Kotest. I'm unsure whether this is issue is from Kotest, Gradle, JUnit, etc.

I believe this is related to https://github.com/kotest/kotest/issues/826

I tried it out. It works if the same data class is being compared (e.g.,

MyClass shouldBe MyClass

). It doesn't work for collections of data classes (e.g.,

listOf(MyClass1, MyClass2) shouldBe listOf(MyClass1, MyClass2)

. It doesn't work for different data classes (e.g.,

MyClass1

shouldBe

MyClass2

). Obviously, comparing different data classes would always fail the test. However, I believe this is still an issue because Kotest still allows it to compile, and the reader of the test report doesn't know it's a different data class until it's been somewhat formatted.

We can inprove the error if the classes are not equal