src/test/kotlin/net/pterodactylus/sone/test/TestUtils.kt

   1 package net.pterodactylus.sone.test
   2
   3 import org.junit.rules.*
   4 import java.lang.reflect.*
   5
   6 private val modifiers = Field::class.java.getDeclaredField("modifiers").apply {
   7         isAccessible = true
   8 }
   9
  10 fun setField(instance: Any, name: String, value: Any?) {
  11         generateSequence<Class<*>>(instance.javaClass) { it.superclass }
  12                         .flatMap { it.declaredFields.asSequence() }
  13                         .filter { it.name == name }
  14                         .toList()
  15                         .forEach { field ->
  16                                 field.isAccessible = true
  17                                 modifiers.setInt(field, field.modifiers and Modifier.FINAL.inv())
  18                                 field.set(instance, value)
  19                         }
  20 }
  21
  22 inline fun <reified T : Throwable> ExpectedException.expect() = expect(T::class.java)