Merge pull request #4329 from adriaanm/followup-4235

Simpler & Scala.js-friendly `ClassTag.unapply`

1 files changed, 29 insertions, 0 deletions

diff --git a/test/junit/scala/reflect/ClassTag.scala b/test/junit/scala/reflect/ClassTag.scala
new file mode 100644
index 0000000000..90cc981fc1
--- /dev/null
+++ b/test/junit/scala/reflect/ClassTag.scala
@@ -0,0 +1,29 @@
+package scala.reflect
+
+import org.junit.Test
+import org.junit.Assert._
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+import scala.tools.testing.AssertUtil._
+
+class Misc
+
+@RunWith(classOf[JUnit4])
+class ClassTagTest {
+  def checkNotString[A: ClassTag](a: Any)  = a match { case x: String  => false case x: A => true case _ => false }
+  def checkNotInt[A: ClassTag](a: Any)  = a match { case x: Int  => false case x: A => true case _ => false }
+  def checkNotLong[A: ClassTag](a: Any) = a match { case x: Long => false case x: A => true case _ => false }
+
+  @Test def checkMisc    = assertTrue(checkNotString[Misc](new Misc))
+  @Test def checkString  = assertTrue(checkNotInt[String] ("woele"))
+  @Test def checkByte    = assertTrue(checkNotInt[Byte]   (0.toByte))
+  @Test def checkShort   = assertTrue(checkNotInt[Short]  (0.toShort))
+  @Test def checkChar    = assertTrue(checkNotInt[Char]   (0.toChar))
+  @Test def checkInt     = assertTrue(checkNotLong[Int]   (0.toInt))
+  @Test def checkLong    = assertTrue(checkNotInt[Long]   (0.toLong))
+  @Test def checkFloat   = assertTrue(checkNotInt[Float]  (0.toFloat))
+  @Test def checkDouble  = assertTrue(checkNotInt[Double] (0.toDouble))
+  @Test def checkBoolean = assertTrue(checkNotInt[Boolean](false))
+  @Test def checkUnit    = assertTrue(checkNotInt[Unit]   ({}))
+}
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