Springboot test fails to run

Question

I'm trying to run an integration test using kotest and running in to the below error. The tests run fine if I only run a single test but it fails when I try to run all tests in the class.

Failed to find merged annotation for @org.springframework.test.context.BootstrapWith(org.springframework.boot.test.context.SpringBootTestContextBootstrapper.class)
java.lang.IllegalStateException: Failed to find merged annotation for @org.springframework.test.context.BootstrapWith(org.springframework.boot.test.context.SpringBootTestContextBootstrapper.class)

HelloTest.kt

@SpringBootTest(classes = [DemoApplication::class])
class HelloTest: FunSpec() {

    override fun extensions() = listOf(SpringExtension)

    init{
        test("should..."){
            ...
        }
        
        test("should..."){
            ...
        }
    }

}