1 files changed, 45 insertions, 0 deletions
diff --git a/sbt-bridge/src/test/scala/xsbt/ExtractAPISpecification.scala b/sbt-bridge/src/test/scala/xsbt/ExtractAPISpecification.scala
new file mode 100644
index 000000000..f5af67e45
--- /dev/null
+++ b/sbt-bridge/src/test/scala/xsbt/ExtractAPISpecification.scala
@@ -0,0 +1,45 @@
+/** Adapted from https://github.com/sbt/sbt/blob/0.13/compile/interface/src/test/scala/xsbt/ExtractAPISpecification.scala */
+package xsbt
+
+import org.junit.runner.RunWith
+import xsbti.api.ClassLike
+import xsbti.api.Def
+import xsbt.api.ShowAPI
+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.extractApiFromSrc(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)
+    fooMethodApi1 == fooMethodApi2
+    // Fails because xsbt.api is compiled with Scala 2.10
+    // SameAPI.apply(fooMethodApi1, fooMethodApi2)
+  }
+}