package xsbt

import org.junit.runner.RunWith
import xsbti.api.ClassLike
import xsbti.api.Def
import xsbt.api.SameAPI
import org.specs2.mutable.Specification
import org.specs2.runner.JUnitRunner

@RunWith(classOf[JUnitRunner])
class ExtractAPISpecification extends Specification {

	"Existential types in method signatures" should {
		"have stable names" in { stableExistentialNames }
	}

	def stableExistentialNames: Boolean = {
		def compileAndGetFooMethodApi(src: String): Def = {
			val compilerForTesting = new ScalaCompilerForUnitTesting
			val sourceApi = compilerForTesting.compileSrc(src)
			val FooApi = sourceApi.definitions().find(_.name() == "Foo").get.asInstanceOf[ClassLike]
			val fooMethodApi = FooApi.structure().declared().find(_.name == "foo").get
			fooMethodApi.asInstanceOf[Def]
		}
		val src1 = """
				|class Box[T]
				|class Foo {
				|	def foo: Box[_] = null
				|
				}""".stripMargin
		val fooMethodApi1 = compileAndGetFooMethodApi(src1)
		val src2 = """
				|class Box[T]
				|class Foo {
			    |   def bar: Box[_] = null
				|	def foo: Box[_] = null
				|
				}""".stripMargin
		val fooMethodApi2 = compileAndGetFooMethodApi(src2)
		SameAPI.apply(fooMethodApi1, fooMethodApi2)
	}
}