add more tests

Author: liufengyun

tests/run/i4984d.scala

@@ -0,0 +1,35 @@
+object Array2 {
+  def unapplySeq(x: Array[Int]): Data1 = new Data1
+
+  class Data1 {
+    def isEmpty: Boolean = false
+    def get: Data2 = new Data2
+  }
+
+  class Data2 {
+    def apply(i: Int): Int = 3
+    def drop(n: Int): scala.Seq[Int] = Seq(2, 5)
+    def toSeq: scala.Seq[Int] = Seq(6, 7)
+    def lengthCompare(len: Int): Int = 0
+  }
+}
+
+object Test {
+  def test1(xs: Array[Int]): Int = xs match {
+    case Array2(x, y) => x + y
+  }
+
+  def test2(xs: Array[Int]): Seq[Int] = xs match {
+    case Array2(x, y, xs:_*) => xs
+  }
+
+  def test3(xs: Array[Int]): Seq[Int] = xs match {
+    case Array2(xs:_*) => xs
+  }
+
+  def main(args: Array[String]): Unit = {
+    test1(Array(3, 5))
+    test2(Array(3, 5))
+    test3(Array(3, 5))
+  }
+}